W32.Randex.AMA

Risk Level 1: Very Low

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Discovered:: February 10, 2004
Updated:: February 13, 2007 12:23:13 PM
Also Known As:: W32/Sdbot.worm.gen.r [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.AMA is a network-aware worm that attempts to copy itself to computers that have weak administrator passwords. The worm receives instructions from an IRC channel on a predetermined IRC server.

Note: Virus definitions dated prior to May 27, 2004 may detect this threat as W32.Randex.Gen.

Antivirus Protection Dates

Initial Rapid Release version May 27, 2004
Latest Rapid Release version March 3, 2008 revision 035
Initial Daily Certified version May 27, 2004
Latest Daily Certified version March 3, 2008 revision 037
Initial Weekly Certified release date June 2, 2004

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

Threat Assessment

Wild

Wild Level: Low
Number of Infections: 50 - 999
Number of Sites: More than 10
Geographical Distribution: Low
Threat Containment: Easy
Removal: Moderate

Damage

Damage Level: Medium

Distribution

Distribution Level: Medium

Writeup By: John Park

Technical Details

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Internet Security Threat Report, Volume 16