VBS/SSIWG is a family of mass mailing worms generated with a virus construction kit.
Once detected, the F-Secure security product will automatically disinfect the suspect file by either deleting it or renaming it.
When VBS/SSIWG.A@mm is executed, it copies itself to the Windows System directory as "Y072QWV.VBS". This file is also set to be executed in each system startup via following registry key:
Next the worm copies itself to the root of each network drive, and sends itself to all recipients in all address books using Outlook. Messages that VBS/SSIWG.A sends have the following characterstics:
Subject: I'am missing U Body: Could u remember me ? Attachment: Y072QWV.VBS
Note: The name of the attachment can be other that "Y072QWV.VBS".The worm uses a counter in the registry, so the mass mailing will happen only every 20th run.
Technical Details: Sami Rautiainen, F-Secure; August 2001