Sophos

Troj/Agent-GYS

Category
Type
What to do
Prevalence low high

Summary

 
Affected operating systems Windows
Characteristics
  • Drops more malware
  • Installs itself in the registry
Included in our products from July 2008 (4.31)
Protection available since 8 May 2008 18:29:57 (GMT)
Last updated 19 May 2008 11:20:51 (GMT)
Detected by All Sophos products

Action

More Information

When run Troj/Agent-GYS drops three files in the Temp folder. These are detected as Troj/Agent-GXV, Troj/Agent-GXV and Mal/Behav-119. It also overwrites <System>\Drivers\Beep.sys. This file is detected as Troj/Agent-GXV.

Troj/Agent-GYS creates registry entries under the registry location:

HKCR\CLSID\{E25C29AB-12B9-4523-A53C-324B5FBA648C}

Troj/Agent-GYS also creates the following registry entries:

HKLM\Software\Microsoft\Windows\CurrentVersion\Explorer\Desktop
sysfile
<Infected filename>

HKCU\Software\Microsoft\Windows\CurrentVersion\Run
Shell
Rundll32.exe "<System>\shell32.dll",Control_RunDLL <infected file>

HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\ShellExecuteHooks
{E25C29AB-12B9-4523-A53C-324B5FBA648C}
""

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