WORM_VB.FND

 Analysis by: Cris Nowell Pantanilla

 PLATFORM:

Windows 98, ME, NT, 2000, XP, Server 2003

 OVERALL RISK RATING:
 DAMAGE POTENTIAL:
 DISTRIBUTION POTENTIAL:
 REPORTED INFECTION:

  • Threat Type: Worm

  • Destructiveness: No

  • Encrypted:

  • In the wild: Yes

  OVERVIEW

This worm arrives as an attachment to email messages spammed by other malware/grayware or malicious users.

It drops copies of itself in all removable and physical drives found in the system.

  TECHNICAL DETAILS

File Size:

Varies

File Type:

EXE

Memory Resident:

Yes

Arrival Details

This worm arrives as an attachment to email messages spammed by other malware/grayware or malicious users.

Installation

This worm drops the following copies of itself into the affected system:

  • %WINDOWS%\Fonts\{random}.com
  • {Drive Letter}\WINDOWS.EXE
  • {Drive Letter}\Explorer.exe

Autostart Technique

This worm adds the following registry entries to enable its automatic execution at every system startup:

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Run
TempCom = %WINDOWS%\FONTS\{random}.com

Propagation

This worm drops copies of itself in all removable and physical drives found in the system.

It searches the network for the following shared networks onto which it attempts to drop copies of itself: