Behaviour Virus

Virus Name: Behaviour Aliases: Behaviour.304 V Status: New Discovery: May, 1996 Symptoms: .COM file growth; characters from memory displayed on system monitor Origin: Unknown Eff Length: 304 Bytes Type Code: PNC - Parasitic Non-Resident .COM Infector Detection Method: F-Prot, AVTK, IBMAV, ViruScan, NAV, NAVDX, PCScan, NProt, AVTK/N, IBMAV/N, LProt, NShld, NAV/N Removal Instructions: Delete infected files General Comments: The Behaviour virus was received in May, 1996. Its origin or point of isolation is unknown. Behaviour is a non-resident, direct action infector of .COM files, but not COMMAND.COM. When a program infected with the Behaviour virus is executed, this virus will infect up to ten .COM files located in the current directory. Infected .COM files will have a file length increase of 304 bytes with the virus being located at the end of the file. The program's date and time in the DOS disk directory listing will not be altered. The following text strings are visible within the viral code: "*.COM" "The Herb VirusCriminal Behaviour" The text string "BC" can be found starting in the fourth byte of all infected files. This virus will sometimes display characters from memory on the system monitor when an infected program is executed.