TR/AgentMB.PEHAB9080094.1 - Trojan

See also

Summary

Full description

Statistics

Virus:	TR/AgentMB.PEHAB9080094.1
Date discovered:	27/11/2008
Type:	Worm
In the wild:	Yes
Reported Infections:	Low
Distribution Potential:	Low
Damage Potential:	Low
Static file:	Yes
IVDF version:	7.01.00.149 - Thu, 27 Nov 2008 16:58 (GMT+1)

General Aliases:
   • Symantec: W32.Harakit
   • Mcafee: W32/Autorun.worm.cj
   • Panda: W32/Autoit.BT
   • Grisoft: Worm/Autoit.GTF
   • Eset: Win32/Autoit.FO
   • Bitdefender: Trojan.AgentMB.PEHAB9080094

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

Side effects:
   • Drops files
   • Registry modification

Files It copies itself to the following location:
   • %WINDIR%\system32 \csrcs.exe

It deletes the initially executed copy of itself.

The following file is created:

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

– %TEMPDIR%\suicide.bat Furthermore it gets executed after it was fully created. This batch file is used to delete a file.

It tries to executes the following file:

– Filename:
   • %TEMPDIR%\suicide.bat
This batch file is used to delete a file.

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

– [HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon]
   • "Shell"="Explorer.exe csrcs.exe"

The values of the following registry key are removed:

– [HKCU\Software\Microsoft\windows\CurrentVersion\Internet Settings]
   • "ProxyServer"
   • "ProxyOverride"
   • "AutoConfigURL"

The following registry keys are added:

– [HKLM\SOFTWARE\Microsoft\DRM\amty]
   • "ilop"="1"
   • "exp1"="408406541BC5BBE4DC197A2A0C46B9AFF2F90D96B151D7C7BCBD177741EE95F062E634D70EB70FB65FC8FBF0EC312619"
   • "dreg"="408406541BC5BBE4DC197A2A0C46B9ACF2F90D96B151D7C7BCBD177641EE95F562E634D70EB70FB65FC8FBF0EC31276D8626D05B1ED70CC881A48DA07A7E649B"
   • "fix"=""
   • "fix1"="1"
   • "regexp"="-0.215134707364621"

– [HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\policies\Explorer\
   Run]
   • "csrcs"="%SYSDIR%\csrcs.exe"

The following registry keys are changed:

– [HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced]
   New value:
   • "SuperHidden"=dword:00000000
     "Hidden"=dword:00000001
     "ShowSuperHidden"=dword:00000001

– [HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Advanced\
   Folder\Hidden\SHOWALL]
   New value:
   • "CheckedValue"=dword:00000001

Miscellaneous Anti debugging
If it was successful it displays the following and terminates immediately:

See a brief description here.

Description inserted by Petre Galan on Fri, 03 Jul 2009 11:36 (GMT+1)
Description updated by Andrei Ivanes on Mon, 17 Aug 2009 15:40 (GMT+1)

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