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Video Reviews - Security and Privacy
Avira vs a D+2 Ransomware file
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<blockquote data-quote="Der.Reisende" data-source="post: 747532" data-attributes="member: 32430"><p>No idea whether another ransomware uses the .KRAB (GandCrab v4) extension, but this one is blocked easily. Maybe later versions will bypass TCPM BB / HIPS. Did not find encrypted files, neither in user folder nor over the system (I have seen RW targeting files in system folders before attacking personal files).</p><p>[ATTACH]192007[/ATTACH]</p><p></p><p>Taken from the hash at the end of the article, file to be found on AnyRun.</p><p></p><p><a href="https://www.bleepingcomputer.com/news/security/gandcrab-v4-released-with-the-new-krab-extension-for-encrypted-files/" target="_blank">GandCrab V4 Released With the New .KRAB Extension for Encrypted Files</a></p><p></p><p>Note I have used custom settings, product version is 12.3.26562.901.</p><p>File system shield was turned off, to prevent the file being detected by signatures.</p><p></p><p>[SPOILER="Custom settings"]</p><p>Realtime protection mode: Expert mode (Prompt upon detecting suspect actions)</p><p>File system protection level: High (monitor all file operations)</p><p>Action on threat detection: Choose action manually</p><p>Download Protection: Security prompt on dangerous files only</p><p>[/SPOILER]</p><p></p><p>No AV is perfect.</p><p>All I want to say, it's a matter of personal preference. Q360 did not shine in the HUB lately (especially not against fileless malware, stealing precious information instead of encrypting them), and missed a RW, too, which encrypted some files until the user clicked the option to block the RW.</p><p></p><p>Another one:</p><p>[SPOILER="Click Me!"]</p><p>[ATTACH]192007[/ATTACH][ATTACH]192008[/ATTACH][ATTACH]192009[/ATTACH][ATTACH]192010[/ATTACH][ATTACH]192011[/ATTACH][ATTACH]192012[/ATTACH]</p><p>Triggers UAC, is active in memory for about 5 seconds, calls out. No files encrypted.</p><p></p><p></p><p>EDIT: The malware triggered both SmartScreen as well as UAC, both have been confirmed.</p><p>The URL was not intercepted by Google Webfilter or Avira Browser extension by the time of download.</p><p>No idea on F-Secure, the webfilter option in FreeDome has been shut down by the time of testing to not interfere with malware.</p><p>[/SPOILER]</p></blockquote><p></p>
[QUOTE="Der.Reisende, post: 747532, member: 32430"] No idea whether another ransomware uses the .KRAB (GandCrab v4) extension, but this one is blocked easily. Maybe later versions will bypass TCPM BB / HIPS. Did not find encrypted files, neither in user folder nor over the system (I have seen RW targeting files in system folders before attacking personal files). [ATTACH]192007[/ATTACH] Taken from the hash at the end of the article, file to be found on AnyRun. [URL='https://www.bleepingcomputer.com/news/security/gandcrab-v4-released-with-the-new-krab-extension-for-encrypted-files/']GandCrab V4 Released With the New .KRAB Extension for Encrypted Files[/URL] Note I have used custom settings, product version is 12.3.26562.901. File system shield was turned off, to prevent the file being detected by signatures. [SPOILER="Custom settings"] Realtime protection mode: Expert mode (Prompt upon detecting suspect actions) File system protection level: High (monitor all file operations) Action on threat detection: Choose action manually Download Protection: Security prompt on dangerous files only [/SPOILER] No AV is perfect. All I want to say, it's a matter of personal preference. Q360 did not shine in the HUB lately (especially not against fileless malware, stealing precious information instead of encrypting them), and missed a RW, too, which encrypted some files until the user clicked the option to block the RW. Another one: [SPOILER="Click Me!"] [ATTACH]192007[/ATTACH][ATTACH]192008[/ATTACH][ATTACH]192009[/ATTACH][ATTACH]192010[/ATTACH][ATTACH]192011[/ATTACH][ATTACH]192012[/ATTACH] Triggers UAC, is active in memory for about 5 seconds, calls out. No files encrypted. EDIT: The malware triggered both SmartScreen as well as UAC, both have been confirmed. The URL was not intercepted by Google Webfilter or Avira Browser extension by the time of download. No idea on F-Secure, the webfilter option in FreeDome has been shut down by the time of testing to not interfere with malware. [/SPOILER] [/QUOTE]
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