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Virus:Worm/Pinit.vv
Date discovered:04/01/2011
Type:Worm
In the wild:Yes
Reported Infections:Low to medium
Distribution Potential:Low
Damage Potential:Low to medium
Static file:Yes
File size:192.000 Bytes
MD5 checksum:7ebeebe7fd388057629d5230d8a55841
VDF version:7.10.07.145
IVDF version:7.11.01.20 - Tuesday, January 4, 2011

 General Aliases:
   •  Bitdefender: Win32.Worm.Pinit.C
   •  Panda: W32/Pinit.N.worm
   •  Eset: Win32/Pinit.AF


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


Side effects:
   • Drops malicious files
   • Registry modification

 Files It copies itself to the following location:
   • %SYSDIR%\cooper.mine



It deletes the following files:
   • %SYSDIR%\user32.dll
   • %SYSDIR%\uuuuuuuuuuu



The following files are created:

%SYSDIR%\wefyy.4f
%SYSDIR%\weftj.ruy
%SYSDIR%\dllcache\user32.dll Further investigation pointed out that this file is malware, too. Detected as: TR/Patched.Gen2

%SYSDIR%\uuuuuuuuuuu Further investigation pointed out that this file is malware, too. Detected as: TR/Patched.Gen2

%SYSDIR%\nmklo.dll Further investigation pointed out that this file is malware, too. Detected as: Worm/Pinit.vs

%SYSDIR%\ff4h.gy



It tries to execute the following file:

Filename:
   • "%SYSDIR%\Wbem\wmic.exe" path win32_terminalservicesetting where (__Class!="") call setallowtsconnections 1

 Registry The following registry keys are added:

[HKLM\SOFTWARE\3]
   • "31897356954C2CD3D41B221E3F24F99BBA"=dword:0x01f0f602
   • "31AC70412E939D72A9234CDEBB1AF5867B"="nqrckqqlqdrqrirprhqoqrqdopoinfnhmjmqrjrjlmmdmqrpmeqhmnng"
   • "31C2E1E4D78E6A11B88DFA803456A1FFA5"=dword:0x00000000

[HKLM\SOFTWARE\1]
   • "31897356954C2CD3D41B221E3F24F99BBA"=dword:0x01f0f602
   • "31AC70412E939D72A9234CDEBB1AF5867B"="efipdhioiijnjpjcjmidigiggmgfgkgkhkhfcojedpfheieefofriljoer"
   • "31C2E1E4D78E6A11B88DFA803456A1FFA5"=dword:0x00000000

[HKLM\SOFTWARE\9]
   • "31897356954C2CD3D41B221E3F24F99BBA"=dword:0x01f0f602
   • "31AC70412E939D72A9234CDEBB1AF5867B"="kgomncpjpnogoconproiodorqjqoqhqfrprgmlmlocqmrnrlpgonkopdpdpo"
   • "31C2E1E4D78E6A11B88DFA803456A1FFA5"=dword:0x00000000

[HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion]
   • "MID"="93644C1DEE384D7294CD0E0F4F4CE1D584782BEA39B3417DA3289D763EC5703C"

[HKLM\SYSTEM\CurrentControlSet\Control\Terminal Server\
   Licensing Core]
   • "EnableConcurrentSessions"=dword:0x00000001

[HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Windows]
   • "Appiuut_Dlls"="nmklo"



The following registry key is changed:

[HKLM\SYSTEM\CurrentControlSet\Control\Terminal Server]
   New value:
   • "fDenyTSConnections"=dword:0x00000000

 Miscellaneous Accesses internet resources:
   • http://gesecha.com/game/account1484/gate/**********
   • http://gesecha.com/game/account1484/gate/**********
   • http://fetepe.com/game/account1484/gate/**********
   • http://utege.com/game/account1484/gate/**********

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


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

Description inserted by Petre Galan on Thursday, February 10, 2011
Description updated by Petre Galan on Thursday, February 10, 2011

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