‘Fully Undetected’ SysJoker Backdoor Malware Targets Windows, Linux & macOS

[Popeye]

Has anyone seen this:

https://threatpost.com/undetected-sysjoker-backdoor-malwarewindows-linux-macos/177532/

Are we covered using Malwarebytes Premium on the Mac?

[alvarnell]

Four scanners on VirusTotal currently detect it: 

https://www.virustotal.com/gui/file/1a9a5c797777f37463b44de2b49a7f95abca786db3977dcdac0f79da739c08ac

Note that the Malwarebytes scanner listed is the Windows version.

 

Also the Intezer analysis lists these Mac files associated with it:

Quote

 

Mac

Files and directories created on the machine:

/Library/MacOsServices

/Library/MacOsServices/updateMacOs

/Library/SystemNetwork

/Library/LaunchAgents/com.apple.update.plist

Persistence:

Creates persistence via LaunchAgent under the path /Library/LaunchAgents/com.apple.update.plist. 

Content:

<?xml version=”1.0″ encoding=”UTF-8″?>

<!DOCTYPE plist PUBLIC “-//Apple//DTD PLIST 1.0//EN” “http://www.apple.com/DTDs/PropertyList-1.0.dtd”>

<plist version=”1.0″>

<dict>

        <key>Label</key>

        <string>com.apple.update</string>

    <key>LimitLoadToSessionType</key>

    <string>Aqua</string>

        <key>ProgramArguments</key>

        <array>

                <string>/Library/MacOsServices/updateMacOs</string>

        </array>

        <key>KeepAlive</key>

    <dict>

       <key>SuccessfulExit</key>

       <true/>

    </dict>

        <key>RunAtLoad</key>

        <true/>

</dict>

</plist>

 

so it shouldn't be long before MWB staff is able to update the detection database.

[treed]

Yup, this should be covered. I do have a suspicion that there is an error with the file paths mentioned in the Intezer report, but it shouldn't matter... the malware should be detected, whether or not I'm right.

[Popeye]

33 minutes ago, treed said:

Yup, this should be covered. I do have a suspicion that there is an error with the file paths mentioned in the Intezer report, but it shouldn't matter... the malware should be detected, whether or not I'm right.

Thank you Thomas. 😉