Virus:TR/Agent.vgo
Date discovered:18/07/2008
Type:Trojan
In the wild:Yes
Reported Infections:Low
Distribution Potential:Low
Damage Potential:Low to medium
Static file:Yes
File size:11.264 Bytes
MD5 checksum:b36823d24bc23529f2775b718fe28dd6
IVDF version:7.00.05.138 - Friday, July 18, 2008

 General Method of propagation:
   • No own spreading routine


Aliases:
   •  Symantec: Trojan.Adclicker
   •  Kaspersky: Trojan.Win32.Agent.vgo
   •  F-Secure: Trojan.Win32.Agent.vgo
   •  Panda: Trj/downloader.MDW
   •  Grisoft: VB.EEJ
   •  Eset: Win32/VB.NJY trojan
   •  Bitdefender: Trojan.TaskDisabler


Platforms / OS:
   • Windows 95
   • Windows 98
   • Windows 98 SE
   • Windows NT
   • Windows ME
   • Windows 2000
   • Windows XP
   • Windows 2003


Side effects:
   • Registry modification

 Registry  The following registry keys including all values and subkeys are removed:
   • [HKLM\SYSTEM\ControlSet001\Control\SafeBoot]
   • [HKCU\AppEvents\Schemes\Apps\Explorer\Navigating]



The following registry keys are added:

– [HKCU\Software\Microsoft\Windows\CurrentVersion\Policies\System]
   • DisableTaskMgr=dword:00000001

– [HKCU\Software\Microsoft\Windows\CurrentVersion\Run]
   • msctrl.exe="%PROGRAM FILES%\Microsoft Security Adviser\msctrl.exe"
   • msavsc.exe="%PROGRAM FILES%\Microsoft Security Adviser\msavsc.exe"
   • msscan.exe="%PROGRAM FILES%\Microsoft Security Adviser\msscan.exe"
   • msiemon.exe="%PROGRAM FILES%\Microsoft Security Adviser\msiemon.exe"
   • msfw.exe="%PROGRAM FILES%\Microsoft Security Adviser\msfw.exe"

 File details Programming language:
 The malware program was written in Visual Basic.


Runtime packer:
In order to aggravate detection and reduce size of the file it is packed with the following runtime packer:
   • UPX

Description inserted by Thomas Wegele on Tuesday, September 2, 2008
Description updated by Thomas Wegele on Tuesday, September 2, 2008

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