1. Symantec/
  2. Security Response/
  3. W32.HLLW.Niklas


Risk Level 1: Very Low

August 5, 2003
February 13, 2007 12:04:42 PM
Also Known As:
Worm.P2P.Niklas [KAV], W32/MScr.worm!p2p [McAfee]
Systems Affected:

W32.HLLW.Niklas is a worm that attempts to spread across file-sharing networks, such as KaZaA, Morpheus, and eDonkey2000. The worm prepends itself to executables it locates in certain folders. It will attempt to terminate the processes of various programs, including antivirus and firewall software.

W32.HLLW.Niklas is a Delphi application, packed with UPX 1.08, Yoda's Crypter 1.2.

Antivirus Protection Dates

  • Initial Rapid Release version August 6, 2003
  • Latest Rapid Release version August 8, 2016 revision 023
  • Initial Daily Certified version August 6, 2003
  • Latest Daily Certified version August 9, 2016 revision 001
  • Initial Weekly Certified release date August 6, 2003
Click here for a more detailed description of Rapid Release and Daily Certified virus definitions.
Writeup By: Sergei Shevchenko

Search Threats

Search by name
Example: W32.Beagle.AG@mm
STAR Antimalware Protection Technologies
2016 Internet Security Threat Report, Volume 21
  • Twitter
  • Facebook
  • LinkedIn
  • Google+
  • YouTube