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Virus:TR/Ircbrute.A.175
Date discovered:10/03/2010
Type:Trojan
In the wild:Yes
Reported Infections:Low to medium
Distribution Potential:Low
Damage Potential:Medium
Static file:Yes
File size:118.784 Bytes
MD5 checksum:038254c3df0a864d10eecba3477003f0
IVDF version:7.10.05.35 - Wednesday, March 10, 2010

 General Aliases:
   •  Sophos: Troj/Agent-NAG
   •  Panda: Bck/IRCBot.CWM
   •  Eset: Win32/Boberog.AK
   •  Bitdefender: IRC-Worm.Generic.10552


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


Side effects:
   • Drops malicious files
   • Lowers security settings
   • Registry modification
   • Third party control

 Files It copies itself to the following location:
   • %WINDIR%\msnmgr.exe



The following file is created:

– C:\a.txt



It tries to executes the following file:

– Filename:
   • "%WINDIR%\msnmgr.exe"

 Registry It creates the following entry in order to bypass the Windows XP firewall:

– [HKLM\SYSTEM\CurrentControlSet\Services\SharedAccess\Parameters\
   FirewallPolicy\StandardProfile\AuthorizedApplications\List]
   • "%executed file%"="%executed file%:*:Enabled:Userinit"



The following registry key is changed:

– [HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon]
   New value:
   • "Userinit"="%SYSDIR%\userinit.exe,%WINDIR%\msnmgr.exe"

 IRC To deliver system information and to provide remote control it connects to the following IRC Server:

Server: b.msn**********.org
Port: 1234
Channel: #bb#
Nickname: n[USA|XP]%number%

 File details Programming language:
The malware program was written in Visual Basic.

Описание добавил Petre Galan в(о) пятница, 28 мая 2010 г.
Описание обновил Petre Galan в(о) пятница, 28 мая 2010 г.

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