WORM_OTORUN.ND

This worm arrives on a system as a file dropped by other malware or as a file downloaded unknowingly by users when visiting malicious sites.

Arrival Details

This worm arrives on a system as a file dropped by other malware or as a file downloaded unknowingly by users when visiting malicious sites.

Installation

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

• %System Root%\1.exe

(Note: %System Root% is the root folder, which is usually C:\. It is also where the operating system is located.)

Other System Modifications

This worm modifies the following file(s):

• %System%\drivers\etc\hosts

(Note: %System% is the Windows system folder, which is usually C:\Windows\System32.)

It deletes the following files:

• System32\DRIVERS\pcidump.sys
• %System%\drivers\puid.sys

(Note: %System% is the Windows system folder, which is usually C:\Windows\System32.)

Dropping Routine

This worm drops the following files:

• %System%\killkb.dll
• %System%\drivers\pcidump.sys
• %System%\867.dll
• %User Temp%\57578.txt
• %System Root%\autorun.inf
• %System%\drivers\ressdt.sys

(Note: %System% is the Windows system folder, which is usually C:\Windows\System32.. %User Temp% is the current user's Temp folder, which is usually C:\Documents and Settings\{user name}\Local Settings\Temp on Windows 2000, XP, and Server 2003, or C:\Users\{user name}\AppData\Local\Temp on Windows Vista and 7.. %System Root% is the root folder, which is usually C:\. It is also where the operating system is located.)

This report is generated via an automated analysis system.