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  3. W32.Pholdicon


Risk Level 2: Low

September 18, 2013
August 7, 2014 3:20:25 PM
Also Known As:
W32/SillyFDC-LP [Sophos]
Infection Length:
Systems Affected:
Windows 2000, Windows 7, Windows 95, Windows 98, Windows Me, Windows NT, Windows Server 2003, Windows Server 2008, Windows Vista, Windows XP
W32.Pholdicon is a worm that downloads potentially malicious files and spreads through network shares and removable media.

Antivirus Protection Dates

  • Initial Rapid Release version September 18, 2013 revision 008
  • Latest Rapid Release version July 15, 2014 revision 036
  • Initial Daily Certified version September 18, 2013 revision 018
  • Latest Daily Certified version July 16, 2014 revision 003
  • Initial Weekly Certified release date September 25, 2013
Click here for a more detailed description of Rapid Release and Daily Certified virus definitions.

Threat Assessment


  • Wild Level: Low
  • Number of Infections: 0 - 49
  • Number of Sites: 0 - 2
  • Geographical Distribution: Low
  • Threat Containment: Easy
  • Removal: Easy


  • Damage Level: Medium
  • Payload: Downloads potentially malicious files.


  • Distribution Level: Medium
  • Target of Infection: Spreads through removable media and network shares.
Note: On May 14, 2015, modifications will be made to the threat write-ups to streamline the content. The Threat Assessment section will no longer be published as this section is no longer relevant to today's threat landscape. The Risk Level will continue to be the main threat risk assessment indicator.
Writeup By: Takayoshi Nakayama, Roberto Sponchioni

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