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  3. SymbOS.Merogo


Risk Level 1: Very Low

March 25, 2010
April 2, 2010 4:39:56 AM
Infection Length:
Systems Affected:
Symbian OS
SymbOS.Merogo is a worm that runs on Symbian Series 60 3rd Edition mobile devices. It steals information and spreads by sending SMS messages that contain a link to a copy of itself.

Antivirus Protection Dates

  • Initial Rapid Release version March 26, 2010 revision 001
  • Latest Rapid Release version February 19, 2013 revision 016
  • Initial Daily Certified version March 26, 2010 revision 019
  • Latest Daily Certified version March 26, 2010 revision 019
  • Initial Weekly Certified release date March 31, 2010
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: Low
  • Releases Confidential Info: Steals information from the mobile device.


  • Distribution Level: Low
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: Kaoru Hayashi and Yana Liu

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