Forums
New posts
Search forums
News
Security News
Technology News
Giveaways
Giveaways, Promotions and Contests
Discounts & Deals
Reviews
Users Reviews
Video Reviews
Support
Windows Malware Removal Help & Support
Inactive Support Threads
Mac Malware Removal Help & Support
Mobile Malware Removal Help & Support
Blog
Log in
Register
What's new
Search
Search titles only
By:
Search titles only
By:
Reply to thread
Menu
Install the app
Install
JavaScript is disabled. For a better experience, please enable JavaScript in your browser before proceeding.
You are using an out of date browser. It may not display this or other websites correctly.
You should upgrade or use an
alternative browser
.
Forums
Security
Malware Analysis
Steamunlocked malware?
Message
<blockquote data-quote="SkeletalDemise" data-source="post: 1055580" data-attributes="member: 103400"><p>Kaspersky added signatures for NvStTest.exe</p><p>[URL unfurl="true"]https://opentip.kaspersky.com/552F9C111BDF18479B2195933649B8DBF80D65113B6D8743ECC9562A4E065A77/results?tab=upload[/URL]</p><p></p><p>As for why it's so hard to detect:</p><p>• the installer is signed</p><p>• the payload is encoded and encrypted</p><p>• it uses a legitimate NVIDIA program to load the malware (although it appears to be modified)</p><p>• it installs a legitimate music player and runs it (Nulloy.exe is not malicious, it's the same exe from the release on GitHub)</p><p></p><p>I found the same version of NvStTest.exe online and it's signed by NVIDIA.</p><p>You can look at the differences.</p><p>Legitimate exe:</p><p>[URL unfurl="true"]https://www.virustotal.com/gui/file/d799c32ddea3e0fa8219563d0b662cfe759231cfb90b23e60bf75a53f1391cd1/detection[/URL]</p><p>Modified exe dropped and used by the malware:</p><p>[URL unfurl="true"]https://www.virustotal.com/gui/file/552f9c111bdf18479b2195933649b8dbf80d65113b6d8743ecc9562a4e065a77/detection[/URL]</p></blockquote><p></p>
[QUOTE="SkeletalDemise, post: 1055580, member: 103400"] Kaspersky added signatures for NvStTest.exe [URL unfurl="true"]https://opentip.kaspersky.com/552F9C111BDF18479B2195933649B8DBF80D65113B6D8743ECC9562A4E065A77/results?tab=upload[/URL] As for why it's so hard to detect: • the installer is signed • the payload is encoded and encrypted • it uses a legitimate NVIDIA program to load the malware (although it appears to be modified) • it installs a legitimate music player and runs it (Nulloy.exe is not malicious, it's the same exe from the release on GitHub) I found the same version of NvStTest.exe online and it's signed by NVIDIA. You can look at the differences. Legitimate exe: [URL unfurl="true"]https://www.virustotal.com/gui/file/d799c32ddea3e0fa8219563d0b662cfe759231cfb90b23e60bf75a53f1391cd1/detection[/URL] Modified exe dropped and used by the malware: [URL unfurl="true"]https://www.virustotal.com/gui/file/552f9c111bdf18479b2195933649b8dbf80d65113b6d8743ecc9562a4e065a77/detection[/URL] [/QUOTE]
Insert quotes…
Verification
Post reply
Top
