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  3. W32.Netsky.K@mm

W32.Netsky.K@mm

Risk Level 2: Low

Discovered:
March 8, 2004
Updated:
February 13, 2007 12:18:36 PM
Also Known As:
W32/Netsky-J [Sophos], Win32.Netsky.J [Computer Assoc, W32/Netsky.j@MM [McAfee], WORM_NETSKY.J [Trend], I-Worm.NetSky.j [Kaspersky]
Type:
Worm
Systems Affected:
Windows 2000, Windows 98, Windows Me, Windows NT, Windows Server 2003, Windows XP

W32.Netsky.K@mm is a mass-mailing worm that uses its own SMTP engine to send itself to the email addresses it finds when scanning hard drives and mapped drives.

The "sender" of the email is spoofed, and its subject, message body, and attachment vary. The attachment has a .pif extension.

This threat is compressed with tElock.


Notes:
  • Symantec Consumer products that support the Worm Blocking functionality automatically detect this threat as it attempts to spread.
  • The worm has an MD5 hash value of 0xE26BC65552359A226CE6589E60C22151.





The worm attempts to disinfect the systems that the following worms may have compromised. The deletion of the additional registry keys may result in other worms being de-activated.
  • W32.Beagle.A@mm through W32.Beagle.K@mm
  • W32.Mydoom.A@mm
  • W32.Mydoom.B@mm
  • W32.Netsky@mm
  • W32.Netsky.B@mm
  • W32.Cone@mm
  • W32.Cone.B@mm
  • W32.Welchia.B.Worm through W32.Welchia.D.Worm
  • W32.Pinfi
  • W32.HLLW.Deadhat.B
  • W32.Mimail.T@mm


Antivirus Protection Dates

  • Initial Rapid Release version March 8, 2004
  • Latest Rapid Release version June 24, 2014 revision 006
  • Initial Daily Certified version March 8, 2004
  • Latest Daily Certified version December 28, 2012 revision 003
  • Initial Weekly Certified release date March 8, 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: More than 1000
  • Number of Sites: More than 10
  • Geographical Distribution: Medium
  • Threat Containment: Easy
  • Removal: Moderate

Damage

  • Damage Level: Low

Distribution

  • Distribution Level: High
Writeup By: Yana Liu

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