Qtiny Virus

Virus Name: Qtiny Aliases: Qtiny.162 V Status: New Discovery: July, 1996 Symptoms: .COM file growth; file date/time changes Origin: Unknown Eff Length: 162 Bytes Type Code: PRaCK - Parasitic Resident .COM Infector Detection Method: ChAV, ViruScan, NAV, NAVDX, AVTK 7.68+, Innoc, NShld, NAV/N, AVTK/N 7.68+ Removal Instructions: Delete infected files General Comments: The Qtiny virus was received in July, 1996. Its origin or point of isolation is unknown. Qtiny is a memory resident infector of .COM files, including COMMAND.COM. When a program infected with the Qtiny virus is executed, this virus will install itself memory resident in allocated system memory at 0060. Interrupt 21 will be hooked by the virus in memory. Once the Qtiny virus is memory resident, it will infect .COM files, including COMMAND.COM, when they are executed. Infected files will have a file length increase of 162 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 have been updated to the current system date and time when infection occurred. No text strings are visible within the viral code.