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  3. W32.Sobig.D@mm

W32.Sobig.D@mm

Risk Level 2: Low

Discovered:
June 18, 2003
Updated:
February 13, 2007 12:02:43 PM
Also Known As:
I-Worm.Sobig.gen [KAV], W32/Sobig.d@MM [McAfee], Win32.Sobig.D [CA], WORM_SOBIG.D [Trend], W32/Sobig-D [Sophos]
Type:
Worm
Systems Affected:
Windows 2000, Windows 95, Windows 98, Windows Me, Windows NT, Windows XP


W32.Sobig.D@mm is a mass-mailing worm that sends itself to all the email addresses it finds in the files with the following extensions:
  • .wab
  • .dbx
  • .htm
  • .html
  • .eml
  • .txt

The email falsely purports that admin@support.com sent it.

Email routine details

The email message has the following characteristics:

From:
admin@support.com (NOTE: W32.Sobig.D@mm spoofs this field. It could be any address.)

Subject:
The subject line will be one of the following:
  • Re: Documents
  • Re: App. 00347545-002
  • Re: Movies
  • Application Ref: 456003
  • Re: Your Application (Ref: 003844)
  • Re: Screensaver
  • Re: Accepted
  • Your Application

Message Body: See the attached file for details

Attachment:
The attachment name will be one of the following:
  • Document.pif
  • app003475.pif
  • movies.pif
  • ref_456.pif
  • Application844.pif
  • Screensaver.scr
  • Accepted.pif
  • Applications.pif
  • Application.pif

NOTE:
The worm de-activates on July 2, 2003, and therefore, the last day on which the worm spreads is July 1, 2003.

Antivirus Protection Dates

  • Initial Rapid Release version June 18, 2003
  • Latest Rapid Release version June 16, 2010 revision 040
  • Initial Daily Certified version June 18, 2003
  • Latest Daily Certified version June 17, 2010 revision 003
  • Initial Weekly Certified release date June 18, 2003
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: Low

Distribution

  • Distribution Level: High
Writeup By: Sergei Shevchenko

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