Mnemonix family
Description Mnemonix family
It is a harmless nonmemory resident parasitic encrypted virus. It searches for .COM files and writes itself to the end of the file. It contains the texts:
[C6H12O6]
Blood Sugar by MnemoniX
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Patras.2346
Description Patras.2346
This is a dangerous memory resident multipartite virus. While executing an infected EXE file the virus writes itself to the MBR of the hard drive and then returns the control to the host file.
While loading from infected disk the virus hooks INT 8, waits for DOS loading procedure, allocates the DOS memory, copies itself to there, and hooks INT 21h. Then it writes itself to the end of EXE files that are executed. While infecting a file the virus also deletes the CHKLIST.MS file, if it exists.
After 60th infection the virus hooks INT 10h (Video) and manifests itself with sound and video effects: it displays the messages and launch "hearts" (03 ASCII) jumping on the screen. The messages are:
A lovely heart fell from the sky !!!
KARNAVALI OF PATRAS !!!
*** PATRAS H/Y ***
Patsy.571
Description Patsy.571
This is a benign memory resident parasitic virus. It hooks INT 10h, 21h and writes itself to the end of COM files that are executed. On March, 6th and September, 8th the virus displays the messages:
RIP Patsy Cline 8th September 1932 - 6th March 1963
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