Virus:TR/BHO.QW
Date discovered:18/11/2008
Type:Trojan
In the wild:Yes
Reported Infections:Low
Distribution Potential:Low
Damage Potential:Low
Static file:No
File size:~ 178.176 Bytes
IVDF version:7.01.00.99 - Tuesday, November 18, 2008

 General Method of propagation:
   • No own spreading routine


Aliases:
   •  Kaspersky: Trojan-Clicker.Win32.Agent.fcz
   •  F-Secure: Trojan-Clicker.Win32.Agent.fcz


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 are added in order to run the processes after reboot:

– [HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Run]
   • "leedkennddulqs"="%SYSDIR%\regsvr32.exe /s \"%malware execution directory%\%malware dll%\""

– [HKCR\CLSID\{8A59D4D5-295D-9AF5-C3FA-7CF5E368BC8F}\InProcServer32]
   • "ThreadingModel"="Apartment"
   • @="%malware execution directory%\%malware dll%"



It registers a browser helper object (BHO) by adding the following key:

– [HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\
   Browser Helper Objects\{8A59D4D5-295D-9AF5-C3FA-7CF5E368BC8F}]
   • "NoExplorer"=dword:00000001



The following registry key is added:

– [HKCR\CLSID\{8A59D4D5-295D-9AF5-C3FA-7CF5E368BC8F}]
   • @="addestination browser enhancer"

 File details Programming language:
 The malware program was written in MS Visual C++.

Description inserted by Thomas Wegele on Wednesday, November 19, 2008
Description updated by Thomas Wegele on Wednesday, November 19, 2008

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