W32.Nimos.Worm

Risk Level 1: Very Low

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Discovered:: March 18, 2004
Updated:: February 13, 2007 12:19:37 PM
Also Known As:: W32/Nomis.worm [Mcafee]
Type:: Worm
Systems Affected:: Windows 2000, Windows 95, Windows 98, Windows Me, Windows NT, Windows XP

W32.Nimos.Worm is a network-aware worm that captures keystrokes and passwords, and then sends them to the attacker.

This worm is written in Microsoft Visual Basic and is packed with PEBundle and ExeStealth.

Antivirus Protection Dates

Initial Rapid Release version March 18, 2004
Latest Rapid Release version March 1, 2011 revision 037
Initial Daily Certified version March 18, 2004
Latest Daily Certified version March 2, 2011 revision 002
Initial Weekly Certified release date March 18, 2004

Click for a more detailed description of Rapid Release and Daily Certified virus definitions.

Threat Assessment

Wild

Wild Level: Low
Number of Infections: 0 - 49
Number of Sites: 0 - 2
Geographical Distribution: Low
Threat Containment: Easy
Removal: Easy

Damage

Damage Level: Low

Distribution

Distribution Level: Low

Writeup By: Kaoru Hayashi

Technical Details

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Internet Security Threat Report, Volume 16