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Virus:Worm/Autorun.rwi.9
Date discovered:17/08/2009
Type:Worm
In the wild:Yes
Reported Infections:Low
Distribution Potential:Low
Damage Potential:Low
Static file:Yes
File size:24.576 Bytes
MD5 checksum:c909fae95d78fce66d934f28d16d67e1
IVDF version:7.01.05.121 - Monday, August 17, 2009

 General Method of propagation:
Autorun feature


Aliases:
   •  Mcafee: W32/Autorun.worm.h virus
   •  Sophos: W32/AutoRun-AQT
   •  Panda: W32/AutoRun.DJ.worm
   •  Eset: probably
   •  Bitdefender: Worm.Generic.34147


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


Side effects:
   • Drops malicious files
   • Registry modification

 Files The following files are created:

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

%TEMPDIR%\~DF5605.tmp

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

  [HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Run]
   • "Sysanalysing"="%SYSDIR%\myrvc.exe %"



The following registry key is changed:

[HKCU\Software\Microsoft\Internet Explorer\Main]
   New value:
   • "FormSuggest PW Ask"="yes"
   • "FormSuggest Passwords"="yes"
   • "Use FormSuggest"="yes"

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


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 Monday, December 14, 2009
Description updated by Petre Galan on Monday, December 14, 2009

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