W32.HLLW.Ajja

Risk Level 1: Very Low

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Discovered:: March 5, 2003
Updated:: February 13, 2007 11:43:47 AM
Type:: Worm
Systems Affected:: Windows 2000, Windows 95, Windows 98, Windows Me, Windows NT, Windows XP

The W32.HLLW.Ajja worm attempts to spread across the KaZaA, Grokster, and Edonkey2000 file-sharing networks. This worm also attempts to delete program files belonging to several antivirus programs.

As part of the execution of W32.HLLW.Ajja, a fake "Install" message will prompt you to "Clik!! in Next to Install."

W32.HLLW.Ajja is written in Microsoft Visual Basic, version 6.

NOTE: Virus definitions dated prior to March 5, 2003 may detect this threat as Bloodhound.W32.5.

Antivirus Protection Dates

Initial Rapid Release version March 5, 2003
Latest Rapid Release version September 28, 2010 revision 054
Initial Daily Certified version March 5, 2003
Latest Daily Certified version September 28, 2010 revision 036
Initial Weekly Certified release date March 5, 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: Kaoru Hayashi

Technical Details

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Internet Security Threat Report, Volume 16