Virus:TR/Renos.28160
Date discovered:18/01/2007
Type:Trojan
In the wild:No
Reported Infections:Low
Distribution Potential:Low
Damage Potential:Low to medium
Static file:Yes
File size:28.160 Bytes
MD5 checksum:1ac77505fc560F58c1fb5f944a4c3336
VDF version:6.37.00.171
IVDF version:6.37.00.187 - Thursday, January 18, 2007

 General Method of propagation:
   • No own spreading routine


Aliases:
   •  Mcafee: Downloader-AFH
   •  Kaspersky: not-virus:Hoax.Win32.Renos.gs
   •  F-Secure: not-virus:Hoax.Win32.Renos.gs
   •  Sophos: Troj/Spywad-AO
   •  Eset: Win32/Adware.SpySheriff


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


Side effects:
   • Downloads files
   • Downloads malicious files
   • Registry modification

 Files It tries to download some files:

– The location is the following:
   • http://www.SpyMarshal.com/**********
It is saved on the local hard drive under: %PROGRAM FILES%\SpyMarshal.exe

– The location is the following:
   • http://www.SpyMarshal.com/**********
It is saved on the local hard drive under: %PROGRAM FILES%\SpyMarshal.lic

– The location is the following:
   • http://www.SpyMarshal.com/**********
It is saved on the local hard drive under: %PROGRAM FILES%\SpyMarshal0.dll Further investigation pointed out that this file is malware, too. Detected as: PHISH/FraudTool.SpySheriff.A.6


– The location is the following:
   • http://www.SpyMarshal.com/**********
It is saved on the local hard drive under: %PROGRAM FILES%\SpyMarshal0.sm

– The location is the following:
   • http://www.SpyMarshal.com/**********
It is saved on the local hard drive under: %PROGRAM FILES%\SpyMarshal1.dll Further investigation pointed out that this file is malware, too. Detected as: TR/Zlob.127488


– The location is the following:
   • http://www.SpyMarshal.com/**********
It is saved on the local hard drive under: %PROGRAM FILES%\SpyMarshal1.sm

– The location is the following:
   • http://www.SpyMarshal.com/**********
It is saved on the local hard drive under: %PROGRAM FILES%\SpyMarshal2.dll Further investigation pointed out that this file is malware, too. Detected as: PHISH/FraudTool.SpySheriff.A.5


– The location is the following:
   • http://www.SpyMarshal.com/**********
It is saved on the local hard drive under: %PROGRAM FILES%\SpyMarshal3.dll Further investigation pointed out that this file is malware, too. Detected as: PHISH/FraudTool.SpySheriff.A.7


– The location is the following:
   • http://www.SpyMarshal.com/**********
It is saved on the local hard drive under: %PROGRAM FILES%\Uninstall.exe

 Registry The following registry keys are added in order to run the processes after reboot:

– [HKCU\Software\Microsoft\Windows\CurrentVersion\Run]
   • Windows update loader = %WINDIR%\xpupdate.exe
   • SpyMarshal = %PROGRAM FILES%\SpyMarshal\SpyMarshal.exe



The following registry keys are changed:

– [HKCU\Software\Microsoft\Windows\CurrentVersion\Policies\
   ActiveDesktop]
   New value:
   • NoChangingWallpaper = dword:00000000
   • NoComponents = dword:00000000
   • NoAddingComponents = dword:00000000
   • NoDeletingComponents = dword:00000000
   • NoEditingComponents = dword:00000000
   • "NoHTMLWallPaper"=dword:00000000

– [HKCU\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer]
   New value:
   • NoActiveDesktop = dword:00000000
   • ClassicShell = dword:00000000
   • ForceActiveDesktopOn = dword:00000001

– [HKCU\Software\Microsoft\Windows\CurrentVersion\Policies\System]
   New value:
   • Wallpaper = %WINDIR%\desktop.html

– [HKCU\Software\Microsoft\Internet Explorer\Desktop\General]
   New value:
   • WallpaperFileTime = %hex values%
   • WallpaperLocalFileTime = %hex values%
   • ComponentsPositioned = dword:00000002

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

Description inserted by Andrei Gherman on Tuesday, March 20, 2007
Description updated by Andrei Gherman on Tuesday, March 20, 2007

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