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SymbOS.Skulls

Risk Level 1: Very Low

Discovered:
November 19, 2004
Updated:
February 13, 2007 12:30:08 PM
Also Known As:
Skulls [F-Secure], SymbOS/Skulls [McAfee], SYMBOS_SKULLS.A [Trend Micro]
Type:
Trojan Horse
Systems Affected:
EPOC

SymbOS.Skulls is a Trojan horse that replaces the system files on the device, causing application icons to be replaced with a skull icon. By default, the Trojan has the file name "Extended Theme.sis."

Antivirus Protection Dates

  • Initial Rapid Release version November 20, 2004
  • Latest Rapid Release version September 28, 2010 revision 054
  • Initial Daily Certified version November 20, 2004
  • Latest Daily Certified version September 28, 2010 revision 036
  • Initial Weekly Certified release date November 23, 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: 0 - 49
  • Number of Sites: 0 - 2
  • Geographical Distribution: Low
  • Threat Containment: Easy
  • Removal: Easy

Damage

  • Damage Level: Low

Distribution

  • Distribution Level: Low
Writeup By: Eric Chien

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