Full description

Virus:	Worm/Taterf.B.45
Date discovered:	06/08/2009
Type:	Worm
In the wild:	Yes
Reported Infections:	Low to medium
Distribution Potential:	Low to medium
Damage Potential:	Low to medium
Static file:	Yes
File size:	88.064 Bytes
MD5 checksum:	1746bd3f544d3a2fcbb3e61f2f65bd55
IVDF version:	7.01.05.81 - Thursday, August 6, 2009

General Method of propagation:
   • Autorun feature

Aliases:
   • Panda: W32/Lineage.LIC
   • Eset: Win32/PSW.OnLineGames.NWF
   • Bitdefender: Trojan.PWS.OnlineGames.KDEV

Platforms / OS:
   • Windows 2000
   • Windows XP
   • Windows 2003

Side effects:
   • Downloads a malicious file
   • Drops malicious files
   • Lowers security settings
   • Registry modification

Files It copies itself to the following locations:
   • %TEMPDIR%\4tddfwq0.dll
   • %drive%\06.exe
   • %TEMPDIR%\xvassdf.exe

It deletes the initially executed copy of itself.

The following file is created:

– %drive%\autorun.inf This is a non malicious text file with the following content:
   • %code that runs malware%

It tries to download a file:

– The location is the following:
   • http://www.google2fv.com/1rb/**********

It tries to executes the following file:

– Filename:
   • "%PROGRAM FILES%\Internet Explorer\iexplore.exe"

Registry One of the following values is added in order to run the process after reboot:

– [HKCU\Software\Microsoft\Windows\CurrentVersion\Run]
   • "54dfsger" = "%TEMPDIR%\xvassdf.exe"

The following registry keys are changed:

Various Explorer settings:

– [HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced]
   New value:
   • "Hidden"=dword:0x00000002
   • "ShowSuperHidden"=dword:0x00000000

– [HKCU\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer]
   New value:
   • "NoDriveTypeAutoRun"=dword:0x00000091

– [HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Advanced\
   Folder\Hidden\SHOWALL]
   New value:
   • "CheckedValue"=dword:0x00000000

Injection – It injects the following file into a process: %TEMPDIR%\4tddfwq0.dll

    Process name:
   • explorer.exe

– It injects itself as a remote thread into a process.

    Process name:
   • iexplore.exe

File details Runtime packer:
In order to aggravate detection and reduce size of the file it is packed with a runtime packer.

설명 삽입자 Petre Galan 2010년 4월 8일 목요일
설명 업데이트 Petre Galan 2010년 4월 8일 목요일

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