W32.Randex.C

Risk Level 1: Very Low

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Discovered:: June 18, 2003
Updated:: February 13, 2007 12:02:44 PM
Type:: Worm
Systems Affected:: Windows 2000, Windows NT, Windows XP

W32.Randex.C is a network-aware worm that will copy itself as the following files:

\Admin$\system32\msmonk32.exe
\c$\winnt\system32\msmonk32.exe

The worm receives instructions from an IRC channel on a specific IRC server. One such command will trigger the aforementioned spreading.
W32.Randex.C may open ports 20, 113, 445, 1024, 55808. It also opens randomly chosen ports.

Antivirus Protection Dates

Initial Rapid Release version June 19, 2003
Latest Rapid Release version September 28, 2010 revision 054
Initial Daily Certified version June 19, 2003
Latest Daily Certified version September 28, 2010 revision 036
Initial Weekly Certified release date June 25, 2003

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: Moderate

Damage

Damage Level: Medium

Distribution

Distribution Level: Medium

Writeup By: Douglas Knowles

Technical Details

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Internet Security Threat Report, Volume 16