Trojan:W32/Yakes variants attempt to connect to and download files from remote servers.
Once detected, the F-Secure security product will automatically disinfect the suspect file by either deleting it or renaming it.
The technical details below describe both the .B and .N variants of this family.
On execution, the trojan creates the following temporary file
The TMP file is a text file containing a 32 hexadecimal string in UUID/GUID format. This string is the same as the parameter fed to the websites the trojan connects to.
When active, Yakes attempts to connect to and download files from two Russian forums.
As part of its activity, the trojan sets the following registry launchpoint:
- HKCU\Software\Microsoft\Windows\CurrentVersion\Run PID = [Path of the malware sample]