WORM_SILLY.AT

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:

• \incoming\{malware file name}
• \edonkey2000 downloads\{malware file name}
• %systemdrive%\documents and settings\my documents\morpheus shared\downloads\{malware file name}
• %User Profile%\my music\{malware file name}
• \{malware file name}
• %System Root%\my doswnloads\{malware file name}

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

Other System Modifications

This worm adds the following registry keys:

HKEY_CURRENT_USER\Software\eMule

HKEY_CURRENT_USER\Software\Kazaa\
LocalContent

HKEY_CURRENT_USER\Software\iMesh\
iMesh5\Transfer

HKEY_CURRENT_USER\Software\Shareaza\
Shareaza\Downloads

It modifies the following registry entries:

HKEY_CURRENT_USER\Software\Microsoft\
Internet Explorer\Main
Start Page = "http://www.{BLOCKED}irefox.dl.am"

(Note: The default value data of the said registry entry is http://www.microsoft.com/isapi/redir.dll?prd=ie&pver=6&ar=msnhome.)

This report is generated via an automated analysis system.