WORM_OTORUN.PD

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.

It deletes the initially executed copy of itself.

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%\Documents and Settings\All Users\Local Settings\Temp\{random}.exe

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

It adds the following processes:

• svchost.exe

It creates the following folders:

• %System Root%\Documents and Settings\All Users\Local Settings
• %System Root%\Documents and Settings\All Users\Local Settings\Temp

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

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\policies\
Explorer\Run
{random} = "%System Root%\Documents and Settings\All Users\Local Settings\Temp\{random}.exe"

Other Details

This worm deletes the initially executed copy of itself