Need help? Ask the community or hire an expert.
Go to Avira Answers
Virus:Worm/Pinit.st
Date discovered:20/10/2010
Type:Worm
In the wild:Yes
Reported Infections:Low to medium
Distribution Potential:Low
Damage Potential:Low to medium
Static file:Yes
File size:181.760 Bytes
MD5 checksum:46593f2c93d587b96b7a6e8781863c37
VDF version:7.10.05.219
IVDF version:7.10.13.04 - Wednesday, October 20, 2010

 General Aliases:
   •  Bitdefender: Trojan.Generic.4681692
   •  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%\iiiiii



The following files are created:

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

%SYSDIR%\h7t.wt
%SYSDIR%\hgtd.ruy
%SYSDIR%\iiiiii 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.MT

%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:0x03f940aa
   • "31AC70412E939D72A9234CDEBB1AF5867B"="nqrckqqlqdrqrirprhqoqrqdopoinfnhmjmqrjrjlmmdmqrpmeqhmnng"
   • "31C2E1E4D78E6A11B88DFA803456A1FFA5"=dword:0x00000000

[HKLM\SOFTWARE\1]
   • "31897356954C2CD3D41B221E3F24F99BBA"=dword:0x03f940aa
   • "31AC70412E939D72A9234CDEBB1AF5867B"="efipdhioiijnjpjcjmidigiggmgfgkgkhkhfcojedpemjgfcinfdff"
   • "31C2E1E4D78E6A11B88DFA803456A1FFA5"=dword:0x00000000

[HKLM\SOFTWARE\9]
   • "31897356954C2CD3D41B221E3F24F99BBA"=dword:0x03f940aa
   • "31AC70412E939D72A9234CDEBB1AF5867B"="kgomncpjpnogoconproiodorqjqoqhqfrprgmlmlocrhrlqnogkrpcpipp"
   • "31C2E1E4D78E6A11B88DFA803456A1FFA5"=dword:0x00000000

[HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion]
   • "MID"="C18D2372BDD8422193A1ACDA78EF9E845DBD238D298C4700913F31FE089A4647"

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

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



The following registry key is changed:

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

 Miscellaneous Accesses internet resources:
   • http://silajopa.com/tpsa/gate/**********
   • http://silajopa.com/tpsa/gate/**********
   • http://perejopa.com/tpsa/gate/**********
   • http://nedojopa.com/tpsa/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

Back . . . .