Virus:Worm/Autorun.cbm.4
Date discovered:21/08/2008
Type:Worm
In the wild:Yes
Reported Infections:Low
Distribution Potential:Low to medium
Damage Potential:Medium
Static file:Yes
File size:233.472 Bytes
MD5 checksum:0658e57e4190ff5db50A3507b3ec2887
VDF version:7.00.06.50
IVDF version:7.00.06.51 - Thursday, August 21, 2008

 General Method of propagation:
   • Mapped network drives


Aliases:
   •  Mcafee: W32/Autorun.worm.bm
   •  Kaspersky: Worm.Win32.AutoRun.cbm
   •  F-Secure: Worm.Win32.AutoRun.cbm
   •  Eset: Win32/AutoRun.PD
   •  Bitdefender: Trojan.Downloader.VB.AXY


Platforms / OS:
   • Windows 95
   • Windows 98
   • Windows 98 SE
   • Windows NT
   • Windows ME
   • Windows 2000
   • Windows XP
   • Windows 2003


Side effects:
   • Downloads a file
   • Drops files
   • Records keystrokes
   • Registry modification
   • Steals information
   • Third party control

 Files It copies itself to the following locations:
   • %WINDIR%\userinit.exe
   • %SYSDIR%\system.exe
   • %drive%\Secret.exe



The following files are created:

– Non malicious file:
   • %SYSDIR%\MSWINSCK.OCX

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

– %WINDIR%\kdcoms.dll This file contains collected keystrokes.



It tries to download a file:

– The location is the following:
   • http://fil**********pera.com/hav_online/files/task.rar

 Registry The following registry key is continuously in an infinite loop added in order to run the process after reboot.

–  [HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon]
   • Userinit="%WINDIR%\userinit.exe"

 Backdoor Contact server:
The following:
   • scs**********h.cx:8800


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

Description inserted by Ana Maria Niculescu on Wednesday, February 25, 2009
Description updated by Andrei Gherman on Monday, March 2, 2009

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