VBS_MAGRE.A

This Worm arrives via removable drives. It 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 via removable drives.

It 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:

• %User Profile%\ntuser.vbe
• {Removable drive letter}:\ntuser.vbe

(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.)

Autostart Technique

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

HKEY_CURRENT_USER\Software\Microsoft\
Windows\CurrentVersion\Policies\
Explorer\Run
ntuser = wscript.exe //B "%User Profile%\ntuser.vbe"

HKEY_CURRENT_USER\Software\Microsoft\
Windows\CurrentVersion\Run
ntuser = wscript.exe //B "%User Profile%\ntuser.vbe"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Policies\
Explorer\Run
ntuser = wscript.exe //B "%User Profile%\ntuser.vbe"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Run
ntuser = wscript.exe //B "%User Profile%\ntuser.vbe"

Other System Modifications

This Worm adds the following registry entries:

HKEY_LOCAL_MACHINE\SOFTWARE\ntuser
(Default) = false - {mm/dd/yyyy}

Other Details

This Worm connects to the following possibly malicious URL:

• http://{BLOCKED}-lc5.{BLOCKED}game.com:10284/is-ready