Virus-101 Virus

 Virus Name:  Virus-101 
 V Status:    Research 
 Discovered:  January, 1990 
 Symptoms:    TSR; BSC; .COM growth (floppy only) 
 Origin:      District of Columbia, United States 
 Eff Length:  2,560 Bytes 
 Type Code:   PRAFK - Parasitic Resident Infector 
 Detection Method:  ViruScan, F-Prot, NAV, AVTK, Sweep, ChAV, 
                    IBMAV, NAVDX, VAlert, PCScan, 
                    NShld, LProt, Sweep/N, Innoc, AVTK/N, NAV/N, IBMAV/N 
 Removal Instructions:  Delete infected files 
 General Comments: 
       The Virus-101 is the "big brother" of Virus-90, also written by 
       Patrick Toulme as an "educational tool" in January 1990. This virus 
       is memory resident, and employs an encryption scheme to avoid 
       detection on files.  It infects COMMAND.COM, and all other 
       executable file types.  Once it has infected all the files on a 
       diskette, it will infect the diskette's boot sector.  It only 
       infects floppy diskettes in its current version. 
       The following description was submitted by Patrick Toulme for 
       inclusion in this listing in November 1990: 
       "Virus-101 is a sophisticated, continually encrypting, research 
       virus written by Patrick Toulme, author of Virus-90.  Virus-101 
       infects both COM and EXE files and will evade most anti-virus 
       software and will continually encrypt itself to prevent 
       non-algorithmic search scans.  This virus is not available to the 
       general public and is presently used by government agencies and 
       corporate security departments to test anti-virus software and 
       hardware devices." 
       See:   Virus-90 

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