W32.Randex.R

Risk Level 1: Very Low

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Discovered:: October 24, 2003
Updated:: February 13, 2007 12:12:38 PM
Also Known As:: W32/Sdbot.worm.gen [McAfee], Backdoor.SdBot.gen [Kaspersky]
Type:: Worm
Systems Affected:: Windows 2000, Windows 95, Windows 98, Windows Me, Windows NT, Windows Server 2003, Windows XP

W32.Randex.R is a network-aware worm that spreads itself through shared network drives as the file, Service.exe.

The worm receives instructions from an IRC channel on a specific IRC server. One such command triggers the aforementioned spreading.

W32.Randex.R may open ports 20, 113, 445, 1024, 55808. It also opens randomly selected ports.

Antivirus Protection Dates

Initial Rapid Release version October 27, 2003
Latest Rapid Release version September 28, 2010 revision 054
Initial Daily Certified version October 27, 2003
Latest Daily Certified version September 28, 2010 revision 036
Initial Weekly Certified release date October 29, 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: Tony Lee

Technical Details

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Internet Security Threat Report, Volume 16