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TraceBack.2930

There are harmless memory resident parasitic viruses. They write themselves to the end of COM and EXE files. Being executed they search for the files and infect them. Then they hook INT 20h, 21h, 1Ch and infect the files that are loaded into the memory. When creating their TSR copy the viruses leave in the memory its TSR code as well as the code of the host file. In some cases these viruses manifest themselves by a video effect, the virus drops the letters on the screen.
The feature of that virus is the fact, that the infected file contains the name of the file that has infected the system memory, i.e. the name of its “father”.

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This entry was posted on Sunday, March 30th, 2008 at 11:50 pm and is filed under Virus Threats.