Full description

Virus:	Worm/Bezopi.RN
Date discovered:	10/11/2009
Type:	Worm
In the wild:	Yes
Reported Infections:	Low
Distribution Potential:	Low to medium
Damage Potential:	Low to medium
Static file:	Yes
File size:	37.376 Bytes
MD5 checksum:	64b159674e75c81c2cdeee7e3c986ade
IVDF version:	7.01.06.216 - Tuesday, November 10, 2009

General Method of propagation:
   • Autorun feature

Aliases:
   • Sophos: Mal/EncPk-ND
   • Panda: W32/Bezopi.B
   • Eset: Win32/AutoRun.FakeAlert.AF
   • Bitdefender: Trojan.Generic.2658105

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

Side effects:
   • Downloads a malicious file
   • Drops malicious files
   • Registry modification

Files It copies itself to the following locations:
   • %PROGRAM FILES%\Microsoft Common\svchost.exe
   • %drive%\autorun.exe

The following file is created:

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

It tries to download a file:

– The location is the following:
   • http://dia2.cn/123/**********?v=1&rs=55274-640-0436465-23659544453496&n=1&uid=1
At the time of writing this file was not online for further investigation.

Registry The following registry key is added:

– [HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion\
Image File Execution Options\explorer.exe]
• "Debugger"="%PROGRAM FILES%\Microsoft Common\svchost.exe"

Injection – It injects itself as a thread into a process.

Process name:
• explorer.exe

File details 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 5 Mart 2010 Cuma
Description updated by Petre Galan on 5 Mart 2010 Cuma

Geri . . . .

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