TMC_Level-69

Risk Level 1: Very Low

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Updated:: February 13, 2007 11:47:33 AM
Also Known As:: TMC-Level69, TMC_6x9, Tmc.5440, TMC.A, TMC, Level-69, TMC.5454
Type:: Virus

The TMC_Level.69 virus infects in the following ways. It first copies itself into memory. During this process, the virus inserts/removes several JUMP instructions and moves parts of the code around, which enables it to present itself in different forms. The virus then changes the address of INT 21 inside the Interrupt Vector Table. This enables the virus to become active whenever a program issues an INT 21 function call. It does not display any message that would allow the user to notice a viral infection. It does not have any known payloads either.

Antivirus Protection Dates

Initial Rapid Release version December 18, 2000
Latest Rapid Release version October 29, 2009 revision 053
Initial Daily Certified version December 18, 2000
Latest Daily Certified version October 30, 2009 revision 002
Initial Weekly Certified release date pending

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

Technical Details

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Internet Security Threat Report, Volume 16