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Virus:TR/Rimecud.A.1859
Date discovered:06/12/2010
Type:Trojan
In the wild:Yes
Reported Infections:Low to medium
Distribution Potential:Low
Damage Potential:Low to medium
Static file:Yes
File size:90.112 Bytes
MD5 checksum:5d1ac261c4312106ce27fede4af939de
VDF version:7.10.06.204
IVDF version:7.10.14.192 - Monday, December 6, 2010

 General Aliases:
   •  Kaspersky: Trojan.Win32.Pincav.anjh
   •  Sophos: Mal/Palevo-A
   •  Bitdefender: Trojan.Generic.KDV.81884
   •  Panda: W32/P2Pworm.PK
   •  GData: Trojan.Generic.KDV.81884


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


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

 Files It copies itself to the following location:
   • %HOME%\Application Data\ltzqai.exe



The following files are created:

– %recycle bin%\%CLSID%\Desktop.ini
– %recycle bin%\%CLSID%\ju7bd.exe
– %recycle bin%\%CLSID%\psyjo3.exe
– %recycle bin%\%CLSID%\games.exe
– %recycle bin%\%CLSID%\system.exe
– %recycle bin%\%CLSID%\jwjqa.exe
– %recycle bin%\%CLSID%\lsvb.exe
– %recycle bin%\%CLSID%\jwkd.exe
– %recycle bin%\%CLSID%\dfe.exe
– %recycle bin%\%CLSID%\lsq.exe
– %recycle bin%\%CLSID%\jikd.exe



It tries to download some files:

– The location is the following:
   • http://two.natnatraoi.com/**********
It is saved on the local hard drive under: %TEMPDIR%\128840.exe

– The location is the following:
   • http://two.natnatraoi.com/**********
It is saved on the local hard drive under: %TEMPDIR%\83169.exe

– The location is the following:
   • http://two.natnatraoi.com/**********
It is saved on the local hard drive under: %TEMPDIR%\755.exe

– The location is the following:
   • http://two.natnatraoi.com/**********
It is saved on the local hard drive under: %TEMPDIR%\207124.exe

– The location is the following:
   • http://two.natnatraoi.com/**********
It is saved on the local hard drive under: %TEMPDIR%\9661586.exe

– The location is the following:
   • http://two.natnatraoi.com/**********
It is saved on the local hard drive under: %TEMPDIR%\6890.exe

– The location is the following:
   • http://two.natnatraoi.com/**********
It is saved on the local hard drive under: %TEMPDIR%\9726578.exe

– The location is the following:
   • http://two.natnatraoi.com/**********
It is saved on the local hard drive under: %TEMPDIR%\36021.exe

– The location is the following:
   • http://two.natnatraoi.com/**********
It is saved on the local hard drive under: %TEMPDIR%\546679.exe

– The location is the following:
   • http://two.natnatraoi.com/**********
It is saved on the local hard drive under: %TEMPDIR%\021.exe



It tries to execute the following files:

– Filename:
   • %TEMPDIR%\36021.exe


– Filename:
   • %TEMPDIR%\6890.exe


– Filename:
   • %TEMPDIR%\128840.exe


– Filename:
   • %TEMPDIR%\755.exe


– Filename:
   • %TEMPDIR%\021.exe


– Filename:
   • %TEMPDIR%\546679.exe


– Filename:
   • %TEMPDIR%\207124.exe


– Filename:
   • %TEMPDIR%\9726578.exe


– Filename:
   • %TEMPDIR%\9661586.exe


– Filename:
   • %TEMPDIR%\83169.exe

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

– [HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon]
   • "Taskman"="%HOME%\Application Data\ltzqai.exe"

– [HKCU\Software\Microsoft\Windows\CurrentVersion\Run]
   • "Fgfk"="%recycle bin%\%CLSID%\lsq.exe"
   • "Fnfx"="%recycle bin%\%CLSID%\dfe.exe"
   • "Fvbk"="%recycle bin%\%CLSID%\lsvb.exe"
   • "Teswf"="%recycle bin%\%CLSID%\system.exe"
   • "games"="%recycle bin%\%CLSID%\games.exe"
   • "jaqq"="%recycle bin%\%CLSID%\jwkd.exe"
   • "jkqq"="%recycle bin%\%CLSID%\jikd.exe"
   • "ju7bd"="%recycle bin%\%CLSID%\ju7bd.exe"
   • "psysjo3"="%recycle bin%\%CLSID%\psyjo3.exe"
   • "sdjwe"="%recycle bin%\%CLSID%\jwjqa.exe"

– [HKCU\Software\Microsoft\Windows NT\CurrentVersion\Winlogon]
   • "Shell"="%recycle bin%\%CLSID%\dfe.exe,%recycle bin%\%CLSID%\jwjqa.exe,%recycle bin%\S-1-5-21-0243556031-888888379-781863308-1457\system.exe,%recycle bin%\S-1-5-21-0243556031-888888379-781863308-1455\psyjo3.exe,%recycle bin%\S-1-5-21-0243556031-888888379-781863308-8333\lsvb.exe,%recycle bin%\S-1-5-21-0243556031-888888379-781863308-9043\jwkd.exe,%recycle bin%\S-1-5-21-0243556031-888888379-781863308-1451\games.exe,%recycle bin%\S-1-5-21-0243556031-888888379-781863308-2734\ju7bd.exe,%HOME%\Application Data\ltzqai.exe,%recycle bin%\S-1-5-21-0243556031-888888379-781863308-9143\jikd.exe,explorer.exe,%recycle bin%\S-1-5-21-0243556031-888888379-781863308-8763\lsq.exe"

 Backdoor Contact server:
All of the following:
   • play.myg**********.com:9955 (UDP)
   • tf130.tef**********.com:8800 (TCP)
   • tf98.tef**********.com:8800 (TCP)
   • mix.tef**********.com:8800 (TCP)
   • tf122.tef**********.com:8800 (TCP)
   • tf50.tef**********.com:8800 (TCP)
   • mails.joo**********.com:8800 (TCP)
   • peas.com**********.org:8800 (TCP)
   • tf18.tef**********.com:8800 (TCP)
   • 209.90.13**********.220:8800 (TCP)
   • 66.7.22**********.28:8800 (TCP)


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

    Process name:
   • explorer.exe


 Miscellaneous Accesses internet resources:
   • http://b.suhi4hr.net/**********


Mutex:
It creates the following Mutexes:
   • fwghw
   • psyjo
   • games
   • f7bd
   • mdge
   • sewwwefwef
   • omdgv
   • dwcfewf
   • nbev+32
   • fewhx
   • fedfw

 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 Wednesday, April 20, 2011
Description updated by Petre Galan on Wednesday, April 20, 2011

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