W32.Korgo.B

Risk Level 2: Low

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Discovered: May 24, 2004
Updated: February 13, 2007 12:23:37 PM
Also Known As: Worm.W32.Padobot [Kaspersky], W32/Korgo.worm.b [McAfee], WORM_KORGO.B [Trend], W32/Korgo-B [Sophos], Win32.Korgo.B [Computer Associ
Type: Worm
Systems Affected: Windows 2000, Windows XP



W32.Korgo.B is a worm that propagates by exploiting the LSASS vulnerability on TCP port 445 (as described in Microsoft Security Bulletin MS04-011). The worm also listens on TCP ports 113, 2041, and 3067, and allows unauthorized access to the infected computer.

W32.Korgo.B is compressed with UPX compressor.

Protection

  • Initial Rapid Release version May 24, 2004
  • Latest Rapid Release version July 19, 2008 revision 019
  • Initial Daily Certified version May 24, 2004
  • Latest Daily Certified version January 20, 2009 revision 048
  • Initial Weekly Certified release date May 26, 2004

Click here 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: Easy

Damage

  • Damage Level: Medium

Distribution

  • Distribution Level: Medium

Writeup By: Takayoshi Nakayama
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