Trojan.Webloin

Risk Level 1: Very Low

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Discovered:: May 19, 2005
Updated:: February 13, 2007 12:39:03 PM
Also Known As:: Backdoor.Win32.PcClient.aj [Ka, BackDoor-CKB [McAfee]
Type:: Trojan Horse
Systems Affected:: Windows 2000, Windows NT, Windows Server 2003, Windows XP

Trojan.Webloin is a Trojan horse that periodically downloads a .dll file from predetermined URLs. The Trojan executes the .dll file and deletes it. The Trojan is configurable and the URLs and file names may vary. The Trojan will only run successfully on computers running Windows NT/2000/XP/2003.

Antivirus Protection Dates

Initial Rapid Release version May 19, 2005
Latest Rapid Release version September 28, 2010 revision 054
Initial Daily Certified version May 19, 2005
Latest Daily Certified version September 28, 2010 revision 036
Initial Weekly Certified release date May 24, 2005

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: Low

Writeup By: Masaki Suenaga

Technical Details

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Internet Security Threat Report, Volume 16