Dexter EXPOSED: dexter Files, a $1500 Pop-Up, and a Broken BTC Math

You open Documents the way you did yesterday. The first photo should still be 1.jpg. The vacation shot should still be vacation.jpg. The invoice should still be invoice-2026.pdf. The tax sheet should still be taxes.xlsx. Instead every familiar name has extra letters stuck on the end, with no new dot to mark the change. 1.jpg is now 1.jpgdexter. vacation.jpg is now vacation.jpgdexter.

Then a window you did not open covers the listing. It is not a text file in the folder. It is not a README you can save and close. The first line says Welcom To : DEXTER. Under that sits a personal identification ID field that is blank.

That is the trap, not a glitch.

This page is for the hour those names appear. It is not a miracle key. It is a map of the trap, so the pop-up does not become your incident plan.

Overview

Dexter ransomware locks the files first. Then it keeps the old name and the old type, and appends the letters dexter with no extra dot. Then it opens a pop-up and talks like a recovery desk. The window is the storefront. It sells “special decryption software.” It prints $1500 as the price. It also prints 0.0030 BTC as the amount. Those two figures do not match at normal Bitcoin rates. That mismatch is the hook. It is not a discount. It is broken checkout math printed on the glass.

If you are staring at a pile of names like 1.jpgdexter and a window that greets you with Welcom To : DEXTER, you are in a ransom incident, not a broken disk and not a browser pop-up that only wants a phone call. The folder is the evidence. The window is a checkout. Stay with the folder, not with the script.

The first tell is the rename. In the published sample, 1.jpg becomes 1.jpgdexter. The same append hits the rest of a normal Documents listing. vacation.jpg becomes vacation.jpgdexter. invoice-2026.pdf becomes invoice-2026.pdfdexter. taxes.xlsx becomes taxes.xlsxdexter. family.mp4 becomes family.mp4dexter. You can still read what the file used to be. You cannot open it. Windows may now call the type a JPGDEXTER File, a PDFDEXTER File, or whatever mash it builds from the old type plus those extra letters. An app cannot talk locked bytes back into a JPEG.

The second tell is the note, and the note is a window. After the files are locked, Dexter displays a pop-up. There is no published text file sitting next to the photos. There is no HOW_TO, no README, no HTML page in the folder that does the talking. The first English you can still read after the photos break is a window that wants a payment. The window is meant to be obeyed. It is not meant to be trusted.

The body of that sample is a shop with two price tags. It says all of your files have been encrypted. It says the computer was infected with a virus. It says you will not be able to decrypt them without their help. Then it asks what you can do to get the files back, and answers itself: buy their special decryption software. The printed price for that software is $1500. Payment, it says, can be made in Bitcoin. A few lines later the same window prints the amount as 0.0030 BTC. Those are the published numbers. Use those numbers. Do not invent a third rate to make them agree.

The window then points at two Bitcoin addresses and one inbox. The printed wallets are 1JueMKAQuWjwuKNEzTuyMfXAZdj5HyVqjx and 14mWyhrBGNtN2SB5c7qaEooo64yquSscEY. The printed mail is Descrypter.pay@onemail.com. The personal identification ID field in that published sample is blank. This page will not invent an ID to fill it. A blank ID is not a missing ticket you should complete. It is part of how this sample actually looks.

That is the whole costume. A locked folder of names with dexter stuck on the end. A pop-up, not a note file. A greeting that misspells Welcome. A blank ID. A $1500 sticker next to a 0.0030 BTC amount that does not match it. Two wallets. One inbox. There is no public free decryptor known for this strain. There is no reason to pay $1500. There is no reason to send coin to those wallets. There is no reason to mail that inbox because a window told you to.

The dexter stamp is the first warning

Most lockers pick an extra ending with a fresh dot, so the change looks like a new file type. Dexter is messier on purpose. It appends the letters dexter to the filename you already had. That is why 1.jpg becomes 1.jpgdexter, not a tidy 1.jpg.dexter. The old type is still in the name. The extra letters are glued to it. You do not have to decode anything. You can still see the photo, the invoice year, the word taxes, the family clip. The familiar words are still in the folder. The files are not familiar anymore.

Do not treat that readable name as a fix. Do not trim dexter off the end and expect Photos or Excel to open the file. Do not run a bulk “extension fixer” you found in an ad. The name is a label. The lock is in the content. Editing the label can make a later trusted tool have a harder time matching the file to what it was. Leave the locked copies as they are until you have a clean machine and a plan that does not start in a pop-up.

The extra letters also do advertising. Anyone who sees vacation.jpgdexter can pretend they already have your case. A later fake helper will quote the mash back to you as if that were expertise. The stamp is public. It is sitting in the folder. Quoting it proves nothing except that they can read a listing.

The pop-up is the storefront, not a help file

Plenty of lockers drop a text file next to the damaged photos. This one does the talking in a window. That matters because there is no second document in the folder that you can copy, print, or hand to a responder as a neat flyer. The screen is the flyer. The files are the proof. If you close the window and look for a README, you can miss the note entirely, then go hunting for a file that was never part of this sample.

A window feels like the machine itself is talking. It feels like a license prompt, a recovery wizard, a Windows notice you are supposed to finish before you can do anything else. That is how a locked photo folder starts to feel like a checkout. Stay with the folder. The overlay is intimidation. It is not a help desk, and it is not a door back into the files.

Keep a photo of the overlay from a phone if you can do it without typing into the window. The wording is evidence. The typos are evidence too. The screen greets you with Welcom To : DEXTER. A later stranger who “already has your ticket” should be able to quote that exact line, including the missing e, if they actually saw the overlay. Most of them will clean the spelling. That cleanup is a tell.

Welcom To : DEXTER is a greeting, not a case number

The first line of the sample is not a diagnosis. It is a headline. Welcom To : DEXTER does the same job a fake breaking-news banner does on a supplement page. It names the brand in capital letters so the rest of the flyer feels like the only adult in the room. You are supposed to stop thinking and start obeying. The missing letter in Welcome is not a joke you should ignore. It is how this window actually reads.

The shout is also a brand. Later search ads will quote DEXTER. Later “helpers” will paste Welcom so they sound close to your glass. Anyone can copy a headline. Copying Welcom To : DEXTER does not mean they can reverse 1.jpgdexter. It means they read the same window you did, or they read a screenshot of it.

Do not tidy the greeting when you write the incident down. Do not correct Welcom to Welcome in the report so it looks more professional. Copy the line the way you would copy a serial off a stolen laptop. That string is how a responder matches this locker. It is not a coupon you redeem by mailing Descrypter.pay@onemail.com.

$1500 and 0.0030 BTC are the same ask with broken math

The window prints two figures as if they were one product. The price for the software is $1500. The payment information amount is 0.0030 BTC. Those are the published numbers. At normal Bitcoin rates, those two figures do not match. A person who tries to “do the conversion” in the same hour the photos broke is supposed to feel stupid, then pick whichever number is easier to send. That confusion is the pitch. It is not a rounding error you should fix for them.

Do not invent a local-currency value for 0.0030 BTC to finish their sentence. Do not decide $1500 is “the real price” because it looks like a product sticker. Do not decide 0.0030 BTC is “the real price” because it looks cheaper. The window listed both. Both are ransom figures. Paying either one is still a payment to the people who locked family.mp4dexter. The CISA StopRansomware Guide is blunt about this kind of squeeze. Paying does not ensure the files come back, does not ensure the systems are clean, and does not ensure anyone on the other side keeps a promise.

The mismatch also does later work. A fake helper can quote $1500 and sound like they saw your window. A different fake helper can quote 0.0030 BTC and sound like they saw a more “accurate” copy. Both quotes come from the same flyer. Reciting one of the numbers is not expertise. It is reading. Do not let anyone “reconcile” the two figures for a fee. Do not send a test amount “in between” to see which checkout they honor.

Two wallets are still one checkout

The published window prints two Bitcoin addresses. One line labels a Bitcoin Address as 1JueMKAQuWjwuKNEzTuyMfXAZdj5HyVqjx. Another line says Send Bitcoin To : 14mWyhrBGNtN2SB5c7qaEooo64yquSscEY. Two strings do not make a safer payment. Two strings make a person pause, pick one, and feel like they completed a form. Completing that form is the product.

Keep both strings as identifiers. Do not treat them as a help desk. Do not type either one into an exchange “just to see the fee.” Do not photograph them into a group chat. Do not paste them into a second site that offers to “check if the wallet is real.” Anyone can send you digits. Digits do not open 1.jpgdexter.

A later message that “corrects” the window and names only one of those addresses is still the same shop, or a copycat standing in the same doorway. A later message that adds a third wallet because “the published ones are burned” is a second sales pitch. This page reprints the two published addresses so you can recognize them in a report. It does not reprint them so you can finish a transfer.

The blank ID is not a ticket you should fill

Under the greeting, the window prints Your personal identification ID : and then a blank. In the published sample that field is not a code, not a hex string, and not a victim number. It is empty. This page will not invent an ID to make the screenshot look complete. A missing ID is not a puzzle. It is how that sample actually shipped.

Do not invent a number because other ransomware families print one. Do not type a hostname, a Windows username, or a random string into that field “so they can find your key.” Do not mail Descrypter.pay@onemail.com to ask what your ID was supposed to be. Filling a blank they left empty is how a locked folder becomes a conversation. The blank is theirs. Leave it blank in the report too, and say so.

Copycats love a blank. They will sell you an ID. They will say the decryptor will not run until you have one. They will generate a pretty string and ask you to paste it back. That is still the same market. The published sample did not hand out an ID as a quote. Do not finish it for them.

Descrypter.pay@onemail.com is checkout, not support

The printed contact is Descrypter.pay@onemail.com. That is the aisle. A private inbox puts you in a room they own, on an account they can delete, with a thread they can screenshot and reuse. Email would feel like a ticket. This email is not a ticket. It is how a locked photo becomes a negotiation.

The handle is branding, the same way dexter on the filename is branding. Descrypter. Pay. One mail. The window even tells you to google how to buy Bitcoin, as if the remaining work were homework. That line is there so you leave the folder and enter their market. Do not open a fresh mail account because the window said to. Do not send a test file to prove you are a real victim. Do not paste a folder listing into a new message. Do not argue about $1500 versus 0.0030 BTC as if a discount were available.

Writing that inbox is the product. A reply does not start a warranty. It starts a conversation you cannot enforce. The $1500 line is how they make that first message feel like a finished purchase. The 0.0030 BTC line is how they make a smaller send feel like a workaround. Either send still funds the next copy of the same locker.

If You Send : 900 Bitcoin is still not a contract

The same window prints a third figure. After the two wallet lines, it says If You Send : 900 Bitcoin We will send you the decryption key. That line is on the glass. It is not a secret second deal. It is more broken math sitting next to $1500 and 0.0030 BTC. Do not invent a story that makes 900 Bitcoin fit. Do not treat it as the “real” price the other two numbers were hiding. Quote it as printed. Then ignore it as a payment instruction.

Three numbers on one flyer is not a menu. It is noise. Noise is useful to a crew that wants you to pick something, anything, so the transfer starts. A person who would never send $1500 might send 0.0030 BTC because it looks small. A person who is already panicking might read 900 Bitcoin and decide the smaller figures are a bargain. All of those readings are the trap working. None of them open taxes.xlsxdexter.

This is not every older locker that also used the word dexter

Years ago, other lockers used a dexter-style ending as one brand among many. Public decryptor pages for those older families still list that word next to other old endings. That history is real. It is also a different storefront. This page is about the pop-up that greets you with Welcom To : DEXTER, appends dexter onto 1.jpg with no extra dot, prints $1500 next to 0.0030 BTC, names those two wallets, and points at Descrypter.pay@onemail.com.

Do not assume an old key works because the word matches. Do not download a mystery decryptor from a search ad because the page title contains Dexter. A tool that was built for a different locker, in a different year, with a different note, is not a reason to feed it invoice-2026.pdfdexter. If a trusted project later publishes a decryptor that actually names this pop-up, that project will not need you to mail the inbox or send $1500 first.

How The Ransomware Works

The shop is simple once you stop reading it as a rescue. Lock the files. Glue dexter onto the old names. Open a window instead of dropping a text file. Misspell Welcome. Leave the ID blank. Print $1500. Print 0.0030 BTC. Print two wallets. Print 900 Bitcoin as if that were a third lane. Point at Descrypter.pay@onemail.com. Tell the scared person to google Bitcoin. Then wait for someone else to “fix” the math.

1. The lock keeps the old name so you recognize the loss

Dexter encrypts the files it wants as leverage, then appends dexter. That is why 1.jpg is still readable as 1.jpgdexter. The operators want you to inventory the damage in seconds. They want you to see the vacation photo, the invoice, the tax sheet, and the family video in one glance. A coded filename can confuse you. A readable filename makes you feel the theft.

If only one folder looks wrong, do not assume the rest of the disk is safe. Ransomware walks trees. It hits Documents, Desktop, Pictures, Downloads, and any drive letter it can reach, including a USB stick you forgot was plugged in. Unplug extra disks. Do not plug in a copy “just to check.” Checking is how the extra copy gets the same dexter stamp.

Double-clicking a renamed file does not bring the photo back. The thumbnail may already look broken. Excel may ask for a workbook that is still sitting in the same folder, only the bytes inside are no longer a workbook. That broken open is the first proof. The second proof is the extra letters. Together they are enough. You do not need to mail Descrypter.pay@onemail.com to confirm what you are looking at.

2. The extra letters stick to the old type

Because there is no fresh dot, Windows can treat the whole tail as a new type. 1.jpgdexter can show up as a JPGDEXTER File. invoice-2026.pdfdexter can show up as a PDFDEXTER File. That mash is a tell. It is also a trap for the first click. Windows may offer to pick an app. There is no player for that ending. Decline the picker. Do not install a “dexter opener” from a search ad.

People sometimes think the disk died. The disk is usually fine. The contents were rewritten so only the attackers’ key can turn them back. Everyday programs fail in a boring way. The photo app shows a broken thumbnail. Accounting software asks for a file that is still listed, only the name is longer. That boring failure is the lock working. It is not a reason to run a repair wizard on the same machine.

3. A window opens instead of a note file

After the rename, the locker does not need a text file to get the first click. It puts the pitch on the glass. That is why a panicked first hour can look like “there is no ransom note.” There is a note. It is the pop-up. Closing it does not cancel the lock. Minimizing it does not make vacation.jpgdexter open. The files stay locked whether the window is in front or not.

Because the note is a window, evidence is easier to lose. A text file stays in the folder when you reboot. A window can vanish, then come back, then vanish again. Photograph it. Write the lines down on paper. Do not type into it. Do not press a button that looks like Next, Buy, or Decrypt. The window is not a wizard. It is a storefront painted on top of the listing.

4. The window sells special decryption software

The published wording is a product pitch. It says all of your files have been encrypted. It says the computer was infected with a virus. It says you will not decrypt them without their help. Then it asks what you can do to get the files back, and answers: you can buy their special decryption software, and that software will recover the data and remove the ransomware. That is a shop. It is not an antivirus. It is not a recovery vendor. It is the same people who locked the folder, selling you a key they claim to hold.

Naming the lock a virus is costume. Naming the fix software is costume. Plenty of real tools remove malware. None of those tools are this window. A later site that sells “Dexter decryption software” for $1500, or for 0.0030 BTC, is standing in the same aisle. The original flyer already named the product. You do not need a second vendor to repeat it.

5. $1500 is printed as if it were a shelf price

Plenty of lockers hide the figure until you write. This one prints $1500 up front. That is not kindness. A printed price removes the last excuse for delay. You do not have to “ask what it costs.” You already know. The remaining step, in their script, is the transfer. The window has already done the quoting.

A round $1500 also travels well. It is easy to repeat in a family group. It is easy to treat like a repair bill. It is easy to round into “maybe we can just get this over with.” It is still a payment to the people who locked family.mp4dexter. It still funds the next copy of the same locker. It still does not produce a warranty. Do not pay $1500. Do not pay a “deposit” against that figure. Do not pay a friend to pay it for you.

6. 0.0030 BTC is printed as if it were the same shelf

A few lines later the same window prints Amount: 0.0030 BTC. That is the second tag. At normal Bitcoin rates it does not match $1500. The flyer does not explain the gap. It does not need to. A person who sees both numbers will try to reconcile them, and that effort is time spent inside the shop. The published numbers are $1500 and 0.0030 BTC. Leave them unmatched. Do not “help” the crew by sending whichever one your exchange will process faster.

Small coin amounts also travel well. 0.0030 BTC looks like a parking ticket next to a tax folder. It looks like something a careful person might send “just this once.” Cheap is a tactic. It is not a discount from a vendor who will still be there on Monday. Do not convert 0.0030 BTC in your head into a local currency and decide it is not that much. The number is theirs. The files are already locked. Another afternoon of panic will not change the bytes in vacation.jpgdexter.

7. Two addresses are printed so you have somewhere to send

The window names 1JueMKAQuWjwuKNEzTuyMfXAZdj5HyVqjx as a Bitcoin Address. It names 14mWyhrBGNtN2SB5c7qaEooo64yquSscEY as the Send Bitcoin To line. Then it adds If You Send : 900 Bitcoin We will send you the decryption key. That is a checkout with extra arrows. Extra arrows are not a safety feature. They are how a confused person still completes a transfer.

Do not send coin to either wallet. Do not send 900 Bitcoin. Do not send a test satoshi to see if the address is active. A test payment is still a payment. It still tells them this victim pays. Copy the two published strings into an incident record. Then leave them alone. They are identifiers for a responder. They are not payment instructions you should carry out.

8. The inbox is there for when the math confuses you

After the wallets, the window says to contact them by email at Descrypter.pay@onemail.com. That line exists for the hour you notice $1500 and 0.0030 BTC do not match. You are supposed to write and ask which figure is real. Asking is checkout. The crew can then name a third figure, a deadline, or a test file. None of those extras were required for the lock. They are required for the sale.

The window also tells you purchasing Bitcoin varies by country, and that you are best advised to do a quick google search yourself. It claims many customers have reported sites to be fast and reliable. It does not need to finish that sentence with a brand you can trust. The job of that paragraph is to move you off the folder and into an exchange. Do not let a ransom window become your buying guide. Do not write the inbox to ask which exchange they prefer.

9. A second shop offers the same miracle

After a ransomware incident, search results fill up with companies that say they can decrypt Dexter or “all jpgdexter files.” Some of those shops are ordinary overpriced consultants. Plenty are a second scam. They will quote Welcom To : DEXTER so they sound close to the case. They will mention $1500. They will mention 0.0030 BTC. They will mention Descrypter.pay@onemail.com as if they already called the original crew. They will ask for a sample file, a remote-access session, or a deposit.

A demo that “unlocks one file” is not proof they can unlock the vacation photo. Anyone can open one junk file they control. Anyone can send you a wallet string that makes an exchange window appear. An exchange window is not Photos opening vacation.jpg again. If a later message skips the original inbox and asks for coin over ordinary mail, that is still the same market, or a copycat standing in the same doorway.

A real public decryptor, when one exists, shows up on an official project page that already existed before your incident. It does not need a $1500 send. It does not need 0.0030 BTC. It does not need those two wallets. It does not need Descrypter.pay@onemail.com. If the pitch is “we can decrypt, pay us first,” you are still in the market the ransomware created. There is no public free decryptor known for this strain. Until a trusted project publishes one, treat any site that says “we already have the Dexter key” as a second sales pitch.

What To Do If Your Files End With dexter

The first useful hour is quiet. You are not looking for a miracle key. You are stopping the spread, keeping evidence, and moving the incident onto official rails. The house steps below cover the generic work. After that block, stay with the Dexter details the generic page cannot name for you.

• STEP 1: Use Rkill to terminate suspicious programs.
• STEP 2: Use Malwarebytes to remove for Ransomware and Unwanted Programs
• STEP 3: Use HitmanPro to remove Trojans and other Malware
• STEP 4: Use AdwCleaner to remove Malicious Browser Extensions and Adware
• STEP 5: Perform a final check with ESET Online Scanner
• STEP 6: Restore the files encrypted by ransomware

STEP 1: Use Rkill to terminate suspicious programs.

In this first step, we will download and run Rkill to terminate suspicious programs that may be running on your computer.

RKill is a program that was developed at BleepingComputer.com that attempts to terminate known malware processes so that your normal security software can then run and clean your computer of infections. When RKill runs it will kill malware processes and then removes incorrect executable associations and fixes policies that stop us from using certain tools.

1. Download Rkill.

   You can download RKill to your computer from the below link. When at the download page, click on the Download Now button labeled iExplore.exe. We are downloading a renamed version of Rkill (iExplore.exe) because some malware will not allow processes to run unless they have a certain filename.

   

   RKILL DOWNLOAD LINK
   (The above link will open a new page from where you can download Rkill)

2. Run RKill.

   After downloading, double-click the iExplore.exe icon to kill malicious processes. In most cases, downloaded files are saved to the Downloads folder.
   The program may take some time to search for and end various malware programs.

   

   When it is finished, the black window will close automatically and a log file will open. Do not restart your computer. Proceed to the next step in this guide.

STEP 2: Use Malwarebytes to remove Ransomware and Unwanted Programs

In this second step, we will install Malwarebytes to scan and remove any infections, adware, or potentially unwanted programs that may be present on your computer.

Malwarebytes is one of the most popular and trusted anti-malware tools for Windows — and it’s completely free for removing infections. It catches threats that many antivirus programs miss, including adware, browser hijackers, and trojans. Follow the steps below to scan and clean your PC in just a few minutes.

1. Download Malwarebytes

   Click the button below to download the latest version of Malwarebytes for Windows from the official source. The free version is all you need — it will scan your computer and remove adware, browser hijackers, and other malicious software at no cost.

   

   DOWNLOAD MALWAREBYTES FOR WINDOWS (FREE)
   
   (The link opens in a new page where your download will start)

2. Install Malwarebytes

   When the download finishes, open your Downloads folder and double-click the MBSetup file. If Windows shows a User Account Control pop-up, click “Yes” to allow the installation.

   

3. Follow the On-Screen Prompts to Install Malwarebytes

   The setup wizard will walk you through a few quick screens:

   • Choose where you’re installing the program — “Personal Computer” or “Work Computer” — then click Next.

     

   • Malwarebytes will now install on your device. This usually takes under a minute.

     

   • When installation is complete, the “Welcome to Malwarebytes” screen will open automatically.

     

   • On the final screen, click Open Malwarebytes to launch the program.

     

4. Enable “Scan for Rootkits”

   Before scanning, turn on rootkit detection so Malwarebytes can find even the most hidden threats. Click the Settings gear icon on the left side of the screen.

   

   In the settings menu, find “Scan for rootkits” and click the toggle so it turns blue.

   

   Done? Click “Dashboard” in the left pane to return to the main screen.

5. Start the Scan

   Click the blue Scan button. Malwarebytes will automatically update its virus database and start checking your computer for malware.

   

6. Wait for the Scan to Finish

   The scan checks your entire system for browser hijackers and other malicious programs, so it can take several minutes. Feel free to do something else — just check back occasionally to see the progress.

   

7. Quarantine the Detected Threats

   When the scan is done, you’ll see a list of everything Malwarebytes found — malware, adware, and potentially unwanted programs. Click the “Quarantine” button to remove all of them at once.

   

   Malwarebytes will now remove the malicious files and registry entries and move them safely into quarantine.

   

8. Restart Your Computer

   Some threats can only be fully removed after a reboot. If Malwarebytes asks you to restart, click Yes. Once you’re logged back in, your PC is clean and you can continue with the next steps in this guide.

   

STEP 3: Use HitmanPro to remove Rootkits and other Malware

In this third step, while the computer is in normal back, we will download and run a scan with HitmanPro to remove Trojans, rootkits, and other malicious programs.

HitmanPro is a second-opinion scanner — it’s designed to catch what your main antivirus might have missed. Instead of relying on a single detection engine, it checks the behavior of files in the locations where malware usually hides. Anything suspicious gets sent to the cloud, where it’s analyzed by two of the best antivirus engines available: Bitdefender and Kaspersky.

Good news: scanning is completely free, with no limits. You only need a license when it’s time to remove what was found — and even then, you can activate a free one-time 30-day trial to clean your PC at no cost. (A full license is $24.95 per year for 1 PC.)

1. Download HitmanPro

   Click the button below to download HitmanPro. Remember — the scan is free, so you have nothing to lose by checking your PC.

   DOWNLOAD HITMANPRO (FREE SCAN)
   (The link opens in a new page where your download will start)

2. Install HitmanPro

   When the download finishes, open your Downloads folder and double-click the file: “hitmanpro.exe” on 32-bit Windows, or “hitmanpro_x64.exe” on 64-bit Windows.

   

   If a User Account Control pop-up asks whether HitmanPro can make changes to your device, click “Yes” to continue.

   

3. Follow the On-Screen Prompts

   On the HitmanPro start screen, click “Next” to begin the system scan. No lengthy setup required — it goes straight to work.

   

   

4. Wait for the Scan to Finish

   HitmanPro will now check your computer for malicious programs. This usually takes just a few minutes thanks to its cloud-based scanning.
   

5. Review the Results and Click “Next”

   When the scan is done, HitmanPro will show you everything it found. Click “Next” to remove the detected threats.

   

6. Click “Activate Free License”

   To remove the malicious files, click the “Activate free license” button. This starts your free 30-day trial — no payment details needed — and unlocks the full cleanup.
   

   When the removal is complete, HitmanPro will show a summary of everything it cleaned. Click Next, then click Reboot if prompted. If there’s no reboot prompt, just click Close — your PC is clean.

STEP 4: Use AdwCleaner to remove Malicious Browser Extensions and Adware

In this next step, we will use AdwCleaner to remove malicious browser policies and unwanted browser extensions from your computer.

AdwCleaner is a free on-demand scanner that specializes in adware, browser hijackers, and unwanted toolbars — the exact threats that mainstream antivirus programs often miss. It also includes tools that repair the damage malware leaves behind, like hijacked browser settings and malicious policies. It’s a quick scan that’s well worth running.

1. Download AdwCleaner

   Click the button below to download AdwCleaner — it’s free, portable, and requires no installation.

   

   DOWNLOAD ADWCLEANER (FREE)
   (The link opens in a new page where your download will start)

2. Run AdwCleaner

   Open your Downloads folder and double-click the file named “adwcleaner_x.x.x.exe“. There’s no installation — the program starts right away.
   

   If Windows asks whether you want to allow AdwCleaner to run, click “Yes“. When the license agreement appears, click I agree to continue.

   

3. Enable “Reset Chrome policies”

   This setting removes malicious browser policies — a trick malware uses to lock your browser settings so you can’t change them back. Click “Settings” on the left side of the window, then turn on “Reset Chrome policies“.

   

4. Start the Scan

   Click “Dashboard” on the left side of the window, then click the “Scan” button.

   

5. Wait for the Scan to Finish

   AdwCleaner will now check your computer for adware and other malware. This usually takes only a few minutes — it’s one of the fastest scanners around.

   

6. Quarantine the Detected Threats

   When the scan finishes, AdwCleaner will list everything it found. Click the “Quarantine” button to remove all the malicious items at once.

   

7. Click “Continue” to Finish the Cleanup

   Save any open work first — AdwCleaner needs to close your open programs before it can clean. When you’re ready, click the “Continue” button.
   

   AdwCleaner will now delete all detected malware from your computer. If it asks you to restart your PC, allow it — your computer will be clean when you log back in.

STEP 5: Perform a final check with ESET Online Scanner

This final step involves installing and running a scan with ESET Online Scanner to check for any additional malicious programs that may be installed on the computer..

ESET Online Scanner is a free second-opinion scanner that performs a deep, full-system check for viruses, trojans, rootkits, and other malware. We use it as the final step because it’s thorough — if anything slipped past the previous scans, ESET will find it. A clean result here means your computer is malware-free.

1. Download ESET Online Scanner

   Click the button below to download ESET Online Scanner.

   

   DOWNLOAD ESET ONLINE SCANNER (FREE)
   (The link opens in a new page where your download will start)

2. Run the Installer

   When the download finishes, open your Downloads folder and double-click “esetonlinescanner.exe“.
   

3. Install ESET Online Scanner

   On the start screen, select your language from the drop-down menu and click Get started.

   

   On the Terms of use screen, click Accept.
   

   Choose your preferences for the Customer Experience Improvement Program and the Detection feedback system (either choice is fine), then click Continue.
   

4. Start a Full Scan

   Click Full Scan — this checks your entire computer, not just the common hiding spots.

   

   Select Enable for Detection of Potentially Unwanted Applications — this lets ESET catch adware and bundled junk programs, not just viruses. Then click Start scan.

   

5. Wait for the Scan to Finish

   ESET will now check every file on your computer. Because it’s a full scan, this can take a while — often an hour or more, depending on how much data you have. Leave it running in the background and check on it from time to time.

   

6. Review the Results

   When the scan completes, the Found and resolved detections screen appears. Any threats found were automatically cleaned and quarantined — there’s nothing extra you need to do. Click View detailed results if you want to see exactly what was removed.
   

   If ESET found nothing — congratulations, your computer has passed the final check and is malware-free.

STEP 6: Restore the files encrypted by ransomware

Unfortunately, in most cases, it’s not possible to recover the files encrypted by this ransomware virus because the private key which is needed to unlock the encrypted files is only available through the attackers. However, below we’ve listed three options you can use to try and recover your files.

Option 1: Search a decryption tool for this ransomware

The cybersecurity community is constantly working to create ransomware decryption tools, so you can try to search these sites for updates:

• https://id-ransomware.malwarehunterteam.com/
• https://decrypter.emsisoft.com/
• https://noransom.kaspersky.com/
• https://www.avast.com/ransomware-decryption-tools

Option 2: Use EaseUS Data Recovery Wizard Free to recover the encrypted files

EaseUS Data Recovery Wizard Free can restore files and repair corrupted files with simple clicks. Its powerful scanning algorithms can identify and retrieve huge file type library, including all of the popular video files, audio files, photos, and document formats.
While the free version only allows you to recover 2 GB of data, this can be helpful to see if the recovery is possible and restore back the most important files from your computer.

1. Download EaseUS Data Recovery Wizard Free.

   You can download EaseUS Data Recovery Wizard Free by clicking the link below.

   

   EASEUS DATA RECOVERY WIZARD FREE DOWNLOAD LINK
   (The above link will open a new page from where you can download EaseUS Data Recovery Wizard)

2. Double-click on the EaseUS Data Recovery Wizard Free setup file.

   When EaseUS Data Recovery Wizard Free has finished downloading, double-click on the setup file to install EaseUS Data Recovery Wizard on your computer. In most cases, downloaded files are saved to the Downloads folder.

   

   You may be presented with a User Account Control pop-up asking if you want to allow EaseUS to make changes to your device. If this happens, you should click “Yes” to continue with the EaseUS Data Recovery Wizard Free installation.

3. Follow the on-screen prompts to install EaseUS Data Recovery Wizard.

   When the EaseUS Data Recovery Wizard installation begins, click on the “Install Now” as seen in the image below.
   

   When your EaseUS Data Recovery Wizard installation completes, click the “Start Now” button to start the program.
   

4. Select a location to start recovering the encrypted files.

   Choose the drive or folder where you are the encrypted files that you want to recover and click “Scan“.
   

5. Wait for the EaseUS Data Recovery Wizard scan to complete.

   EaseUS Data Recovery Wizard will now scan your computer files that can be restored. This process can take a few minutes, so we suggest you do something else and periodically check on the status of the scan to see when it is finished.
   

6. Find the files you want to recover.

   When the EaseUS Data Recovery Wizard scan is finished scanning it will show a screen that displays the files that can be recovered. This tool can recover a lot of data, use the “Filter” button to quickly filter specific file types and find the files that you want to recover.
   

   Click the “Preview” button or double-click on a file for a full preview.
   

7. Select your files and click “Recover”.

   Finally, select the the files you want to recover and click “Recover“.
   
   Choose a safe location to save all the files.
   
   The free version only allow you to recover 2 GB of data, however, this will allow you to recover the most important files and see if EaseUS Data Recovery Wizard can correctly recover them.
   

Option 3: Try to restore your files with ShadowExplorer

This ransomware will attempt to delete all shadow copies when you first start any executable on your computer after becoming infected. Thankfully, the infection is not always able to remove the shadow copies, so you should continue to try restoring your files using this method.

1. Download ShadowExplorer.

   You can download ShadowExplorer from the below link.

   SHADOW EXPLORER DOWNLOAD LINK
   (This link will open a new web page from where you can download “ShadowExplorer”)

2. Install ShadowExplorer.

   Double-click on the ShadowExplorer-x.x-setup file to start the installation process, then follow the on-screen promts to install this program.
   

3. Select snapshot date.

   Open ShadowExplorer and then from the top bar select the drive where the files that you want to save are located, then select from the snapshot available one previous to this infection.

   

4. Export the files that you want to recover.

   Once you have found a copy of the original file or folder, right-click on it and the select “Export”. A window will prompt you where you want to save the file or folder.
   

Do not pay $1500. Do not send 0.0030 BTC. Do not send 900 Bitcoin. Do not send coin to 1JueMKAQuWjwuKNEzTuyMfXAZdj5HyVqjx or to 14mWyhrBGNtN2SB5c7qaEooo64yquSscEY. Do not mail Descrypter.pay@onemail.com. Do not invent a personal identification ID to fill the blank. Do not type those wallets into an exchange, a “wallet checker,” or a form a stranger sends back. If you already sent a message before you found this page, stop there. Do not pay a deposit to “hold the original $1500” for anyone who quotes the pop-up.

Keep every stamped name exactly as it is. Do not bulk-rename 1.jpgdexter back to 1.jpg, or vacation.jpgdexter back to vacation.jpg, or invoice-2026.pdfdexter back to a normal PDF, or taxes.xlsxdexter back to a spreadsheet, or family.mp4dexter back to a video. Stripping the extra letters is not a repair. It can make a later trusted tool worse, not better. The original name is already sitting in front of dexter. You do not need to edit it to know what you lost.

Keep a photo of the pop-up with the locked files. There is no published text note to archive, so the window itself is the flyer. Copy the contact marks as identifiers: Welcom To : DEXTER, the blank personal identification ID, the $1500 price, the 0.0030 BTC amount, the 900 Bitcoin line, 1JueMKAQuWjwuKNEzTuyMfXAZdj5HyVqjx, 14mWyhrBGNtN2SB5c7qaEooo64yquSscEY, and Descrypter.pay@onemail.com. Those artifacts are evidence. They are not instructions you should carry out.

Do not pay $1500. Do not send coin to those wallets. Do not ask a friend to write the inbox “just to see.” A printed $1500 is still a ransom. A printed 0.0030 BTC is still a ransom. A calm address is still the people who locked the files. If a later message quotes the pop-up and offers “the real price” that makes the two figures match, that is still the same shop. If a later message skips the original inbox and asks for $1500 over a different address, that is still the same shop, or a copycat standing in the same doorway.

If someone claims they can already decrypt Dexter files for a fee because they can recite $1500 and 0.0030 BTC, they are selling a report, not a key. If they mention Descrypter.pay@onemail.com as proof they “already called the crew,” they read the same window you did. If they fill in a personal ID the published sample left blank, they are inventing a ticket. Do not answer. Do not complete their checkout. Do not help them fix the math.

If Windows still offers to pick an app for the mashed type, decline it. There is no player for jpgdexter. Report the incident through the CISA ransomware reporting page and the FBI IC3 desk if those desks match where you live.

The Bottom Line

Dexter ransomware is a locker with a glued-on filename and a pop-up that cannot do math. It keeps the old name and appends dexter with no extra dot. 1.jpg becomes 1.jpgdexter. The note is a window, not a text file. It greets you with Welcom To : DEXTER. The personal identification ID in the published sample is blank. The window sells special decryption software for $1500, then prints 0.0030 BTC as the amount. Those two figures do not match at normal Bitcoin rates. It also prints a 900 Bitcoin line. The wallets are 1JueMKAQuWjwuKNEzTuyMfXAZdj5HyVqjx and 14mWyhrBGNtN2SB5c7qaEooo64yquSscEY. The inbox is Descrypter.pay@onemail.com. There is no public free decryptor known for this strain.

Do not pay $1500. Do not send coin to those wallets. Do not mail that inbox. Do not invent an ID. Do not rename the pile in bulk. If you take one sentence with you, take this. A folder of names ending in dexter, plus a pop-up that prints $1500 next to 0.0030 BTC, is ransomware on the first sighting. Treat it that way before anyone offers to make the numbers agree.