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Virus:TR/EyeStye.H.89
Date discovered:20/02/2011
Type:Trojan
In the wild:No
Reported Infections:Low
Distribution Potential:Low
Damage Potential:Medium
Static file:Yes
File size:554.496 Bytes
MD5 checksum:3500BFB90DB9D500B9E73929E0EBDE27
VDF version:7.10.08.242
IVDF version:7.11.03.165 - Sunday, February 20, 2011

 General Method of propagation:
   • No own spreading routine


Aliases:
   •  Kaspersky: Trojan-Dropper.Win32.VB.auvk
   •  F-Secure: Trojan-Dropper.Win32.VB.auvk
   •  Sophos: Troj/Agent-QGF
   •  Avast: Win32:VB-RGW
   •  Microsoft: Trojan:Win32/EyeStye.H
   •  VirusBuster: Trojan.DR.VB!Ee3cCUKhFxY
   •  Eset: Win32/Spy.SpyEye.CA
   •  DrWeb: Trojan.DownLoader2.10808
   •  Norman: W32/VBTroj.CZGP


Platforms / OS:
   • Windows XP
   • Windows 2003
   • Windows Vista
   • Windows Server 2008
   • Windows 7


Side effects:
   • Drops malicious files
   • Lowers security settings
   • Records keystrokes
   • Registry modification
   • Steals information

 Files It copies itself to the following location:
   • C:\winevt\winevt.exe



It deletes the initially executed copy of itself.



The following files are created:

– Non malicious file:
   • C:\winevt\config.bin

%TEMPDIR%\%random character string% .txt Further investigation pointed out that this file is malware, too.

 Registry The following registry key is added in order to run the process after reboot:

– [HKCU\SOFTWARE\MICROSOFT\WINDOWS\CURRENTVERSION\RUN]
   • "winevt.exe"="C:\winevt\winevt.exe"



The following registry keys are changed:

Lower security settings from Internet Explorer:

– [HKCU\Software\Microsoft\Windows\CurrentVersion\Internet Settings]
   New value:
   • "GlobalUserOffline"=dword:00000000
   • "EnableHttp1_1"=dword:00000001
   • "ProxyHttp1.1"=dword:00000001
   • "WarnOnPost"=hex:00,00,00,00
   • "WarnOnPostRedirect"=dword:00000000
   • "WarnOnIntranet"=dword:00000000
   • "MigrateProxy"=dword:00000001
   • "ProxyEnable"=dword:00000000
   • "ProxyServer"=-
   • "ProxyOverride"=-
   • "AutoConfigURL"=-

– [HKCU\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\
   Zones\0]
   New value:
   • "1409"=dword:00000003
   • "1609"=dword:00000000
   • "1406"=dword:00000000

– [HKCU\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\
   Zones\1]
   New value:
   • "1409"=dword:00000003
   • "1609"=dword:00000000
   • "1406"=dword:00000000

– [HKCU\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\
   Zones\2]
   New value:
   • "1409"=dword:00000003
   • "1609"=dword:00000000
   • "1406"=dword:00000000

– [HKCU\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\
   Zones\3]
   New value:
   • "1409"=dword:00000003
   • "1609"=dword:00000000
   • "1406"=dword:00000000

– [HKCU\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\
   Zones\4]
   New value:
   • "1409"=dword:00000003
   • "1609"=dword:00000000
   • "1406"=dword:00000000

– [HKCU\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\
   Lockdown_Zones\1]
   New value:
   • "1406"=dword:00000000

– [HKCU\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\
   Lockdown_Zones\2]
   New value:
   • "1406"=dword:00000000

– [HKCU\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\
   Lockdown_Zones\3]
   New value:
   • "1406"=dword:00000000

– [HKCU\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\
   Lockdown_Zones\4]
   New value:
   • "1406"=dword:00000000

– [HKCU\Software\Microsoft\Internet Explorer\PhishingFilter]
   New value:
   • "EnabledV8"=dword:00000000
   • "ShownServiceDownBalloon"=dword:00000000

– [HKCU\Software\Microsoft\Internet Explorer\Recovery]
   New value:
   • "ClearBrowsingHistoryOnExit"=dword:00000000

– [HKEY_CURRENT_CONFIG\Software\Microsoft\windows\CurrentVersion\
   Internet Settings]
   New value:
   • "ProxyEnable"=dword:00000000

 Injection – It injects itself as a remote thread into processes.

It is injected into all processes.


 Miscellaneous Internet connection:

It queries with the name:
   • microsoft.com
Accesses internet resources:
   • http://www.microsoft.com

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


Compilation date:
Date: 18/02/2011
Time: 15:34:53

Description inserted by Alexander Bauer on Wednesday, February 23, 2011
Description updated by Alexander Bauer on Wednesday, February 23, 2011

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