W32.Yaha.Z@mm

Risk Level 2: Low

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Discovered:: July 5, 2003
Updated:: February 13, 2007 12:03:29 PM
Also Known As:: I-Worm.Lentin.c [KAV], W32/Yaha.d@mm [McAfee], W32/Lentin.B@mm [Frisk], Win32/Yaha.B@mm [GeCAD]
Type:: Worm
Systems Affected:: Windows 2000, Windows 95, Windows 98, Windows Me, Windows NT, Windows XP

W32.Yaha.Z@mm is a variant of W32.Yaha.C@mm. It has been repacked to make it difficult for antivirus software to detect.

NOTE: Definitions dated prior to July 10, 2003 may detect this threat as W32.Yaha.V@mm.

Antivirus Protection Dates

Initial Rapid Release version July 5, 2003
Latest Rapid Release version July 5, 2003
Initial Daily Certified version July 5, 2003
Latest Daily Certified version July 5, 2003
Initial Weekly Certified release date July 9, 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: Low

Distribution

Distribution Level: High

Writeup By: Robert X Wang

Technical Details

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Internet Security Threat Report, Volume 16