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Date discovered:27/11/2008
In the wild:Yes
Reported Infections:Low
Distribution Potential:Low
Damage Potential:Low
Static file:Yes
IVDF version:

 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\
   • "csrcs"="%SYSDIR%\csrcs.exe"

The following registry keys are changed:

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

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

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

Description inserted by Petre Galan on Friday, July 3, 2009
Description updated by Andrei Ivanes on Monday, August 17, 2009

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