Quiet Virus

Virus Name: Quiet Aliases: V Status: Rare Discovery: January, 1992 Symptoms: .COM file growth; TSR Origin: Kansas, United States Eff Length: 2,048 - 2,063 Bytes Type Code: PRsC - Parasitic Resident .COM Infector Detection Method: ViruScan, F-Prot, Sweep, IBMAV, NAVDX, AVTK, NAV, VAlert, PCScan, ChAV, NShld, LProt, Sweep/N, Innoc, NProt, AVTK/N, NAV/N, IBMAV/N Removal Instructions: Delete infected files General Comments: The Quiet virus was discovered in the State of Kansas in the United States in January, 1992. Quiet is a memory resident infector of .COM programs, but not COMMAND.COM. It's point of discovery was in a computer repair facility, so it is believed to be in the public domain. When the first Quiet infected program is executed, the Quiet virus will install itself memory resident as a low system memory TSR of 2,304 bytes. The virus will have hooked interrupts 16, 21, and 64. Once the Quiet virus is memory resident, it will infect .COM programs other than COMMAND.COM when they are executed. Quiet infected programs will have a file length increase of 2,048 to 2,063 bytes with the virus being located at the end of the infected program. The file's date and time in the DOS disk directory listing will not have been altered. The following text strings can be found in the last 2K of Quiet infected programs: "DNAMMOC" "COM COM" "t=1024 /write=off /win /quiet" It is unknown what the Quiet virus does besides replicate.