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Details
DST Family
These are harmless memory resident parasitic viruses. They hook INT 21h and write themselves to the end of COM files that are executed. They do not manifest themselves in any way.
"DST.231,242" store the original INT 21h address to the address of INT 4Bh, and use INT 4Bh call while infecting the files.
"DST.330,347,396" have a bug and may halt the system while installing memory resident. These viruses contain the text:
DST |
