W32.HLLW.Raleka

Risk Level 2: Low

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Discovered:: August 26, 2003
Updated:: February 13, 2007 12:06:26 PM
Also Known As:: W32/Raleka.worm [McAfee], Raleka [F-Secure], Worm.Win32.Raleka [KAV], WORM_RALEKA [Trend], Win32.Raleka [CA], W32/Raleka [Sophos]
Type:: Worm
Systems Affected:: Windows 2000, Windows XP

W32.HLLW.Raleka is a worm that, like W32.Blaster.Worm, exploits the Microsoft DCOM RPC vulnerability, as described in Microsoft Security Bulletin MS03-026.

When W32.HLLW.Raleka is executed, it attempts to download files from a predefined location and connect to an IRC server.

The worm is 14 Kb in size and is packed using the run-time compression utility, UPX. When unpacked, the size of the worm is approximately 100 Kb.

Antivirus Protection Dates

Initial Rapid Release version August 27, 2003
Latest Rapid Release version September 28, 2010 revision 054
Initial Daily Certified version August 27, 2003
Latest Daily Certified version September 28, 2010 revision 036
Initial Weekly Certified release date August 27, 2003

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

Threat Assessment

Wild

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

Damage

Damage Level: Low

Distribution

Distribution Level: Medium

Writeup By: Neal Hindocha

Technical Details

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Internet Security Threat Report, Volume 16