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Category: Malware

Type: Trojan-Dropper

Aliases: Trojan-Dropper:OSX/Revir.B, Trojan-Dropper:OSX/Revir.B


Trojan-Dropper:OSX/Revir.B drops and executes a backdoor program detected as Backdoor:OSX/Imuler.A, while camouflaging its activity by opening a JPG file to distract the user.


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Technical Details

Trojan-Dropper:OSX/Revir.B drops a JPG file in the /tmp folder, then opens it to distract the user from noticing any other ongoing activity.

Screenshot of a JPG file dropped by Trojan-Dropper:OSX/Revir.B.

Note that the JPG file in the screenshot above uses the name 'trojan.jpg'. The JPG file will actually use the same name as the trojan-dropper's binary file.


In the background, the malware will drop and execute a backdoor program (detected as Backdoor:OSX/Imuler.A):

  • /tmp/host