Jolter.2197
Description Jolter.2197
It is not a dangerous memory resident encrypted parasitic stealth virus. It hooks INT 1Ch, 21h and writes itself to the end of COM and EXE files that are executed or closed. On opening an infected file the virus disinfects it, and infects again on closing. On the file creating the virus stores its name, and infects the file on closing. While executing several compressing utilities the virus disables its infection/disinfection routines.
Depending on its internal counter the virus manifests itself with a video effect. The virus contains the internal text strings:
ARJBSACHKDIEICELHAPKLPKZRAR
COMMAND.COM
COMMAND
EXECOM
*.COM *.EXE IBM
JOLTER 4.0
Check other viruses! Be aware! Use Antiviral Software
Pan family
Description Pan family
These are not dangerous nonmemory resident encrypted parasitic viruses. They search for .COM files, then write themselves to the end of the file. The "Pan.1000" virus leaves a memory resident program that hooks INT 8 and plays a tune.
Pande.1520
Description Pande.1520
It is a dangerous memory resident parasitic stealth virus. It writes itself to the end of COM and EXE files that are accessed. While installing memory resident the virus scans DOS kernel, patches it, hooks INT 21h and leaves its copy in UMB memory, if it is available. If several anti-viruses (F-PROT, TBAV) or utilities (ARJ, RAR, LHA, PKZIP, CHKDISK) are run, the virus disables its stealth routines. The virus has a bug and may halt the system.
The virus contains the text strings:
pandemonium by retch
17/04/96
F-TBARRALHPKCH
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