W32.HLLW.GOP@mm

Risk Level 2: Low

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Discovered:: December 13, 2001
Updated:: February 13, 2007 11:37:55 AM
Also Known As:: W32/GOP@MM [McAfee], W32/Gop-A [Sophos], W32/Gop-C [Sophos], Troj/Gop [Sophos], WORM_GOP.A [Trend], WORM_GOP.B [Trend], WORM_GOP.E [Trend], Win32.PSW.Gop.196.2 [CA], Win32.PSW.Gop.196.3 [CA], I-Worm.GOPworm.153 [KAV], I-Worm.GOPworm.153.b [KAV], I-Worm.GOPworm.1963 [KAV], I-Worm.GOPworm.196 [KAV], Trojan.PSW.GOPtrojan.196 [KAV]
Type:: Worm
Systems Affected:: Windows 2000, Windows 95, Windows 98, Windows Me, Windows NT, Windows XP
CVE References:: CVE-2001-0154

W32.HLLW.GOP@mm is a mass-mailing worm that copies itself to the hard drive as C:\Windows\System\Kernelsys32.exe. It also searches the network drives and copies itself to \Recycled\Notdelw.i.n.v.e.r.y.i.f.y.exe on any mapped drive on which it can find an operating system. Then, W32.HLLW.GOP@mm sets that particular file to run at startup by modifying the Win.ini file.

Antivirus Protection Dates

Initial Rapid Release version December 15, 2001
Latest Rapid Release version July 31, 2011 revision 017
Initial Daily Certified version December 15, 2001
Latest Daily Certified version August 1, 2011 revision 005
Initial Weekly Certified release date December 19, 2001

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: 3 - 9
Geographical Distribution: Medium
Threat Containment: Moderate
Removal: Moderate

Damage

Damage Level: Low

Distribution

Distribution Level: High

Writeup By: Douglas Knowles

Technical Details

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Internet Security Threat Report, Volume 16