SymbOS.Blankfont.A

Risk Level 1: Very Low

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Discovered:: August 10, 2005
Updated:: February 13, 2007 12:43:13 PM
Also Known As:: Blankfont.A [F-Secure]
Type:: Trojan Horse
Systems Affected:: EPOC

SymbOS.Blankfont.A is a Trojan horse that drops a corrupt GDR font file onto the compromised device. The Trojan runs on the Symbian OS, which is the operating system for Nokia Series 60 cellular telephones.

It is reported that the trojan arrives as the file Rally_2.sis

Antivirus Protection Dates

Initial Rapid Release version August 10, 2005
Latest Rapid Release version August 20, 2008 revision 017
Initial Daily Certified version August 10, 2005
Latest Daily Certified version August 20, 2008 revision 016
Initial Weekly Certified release date August 10, 2005

Click 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: Kaoru Hayashi

Technical Details

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Internet Security Threat Report, Volume 16