This virus copies itself with name VIRUS.BAT in root directories of B: and C: drives and inserts several instructions in AUTOEXEC.BAT file. Modified AUTOEXEC.BAT will execute VIRUS.BAT file before execution of other programs. ... [More]

BAT.Looper ---------- This is a dangerous script virus. It is written in BATCH for DOS. It is about 65 bytes in size.When launched, it looks for files as .ba? in the current directory, for files as .b?t in the parent directory, and for files ?*.*at ... [More]

This virus uses a way similar to BAT.Zeke.324, but compresses infected EXE files with PKZIP and password "zeke". ... [More]

This is a relatively harmless memory resident polymorphic parasitic virus. It stores inside itself a COM dropper. After starting from a COM file, the virus keeps in memory its TRS copy and hooks INT 21h. The new handler INT 21h writes into BAT files... [More]

This virus is named after the WINSTART.BAT file where the body of the virus is placed. That BAT file contains four text lines followed by binary data:@ECHOOFF :s%r# COPY %0.BAT C:\Q.COM>NUL C:\Q [ binary data ]On execution of that file the virus co... [More]

This is a harmless batch virus just 602 bytes of length. It uses "worm" technology to spread: on floppy disks the virus replaces the AUTOEXEC.BAT file and is automatically executed when the system is loaded from such disk, on hard drive the virus r... [More]

This is a not dangerous nonmemory resident polymorphic BAT virus. It writes itself to the end of the files. When executed it searches for .BAT files in current, parent, current C: drive and root C: directories, then in all PATH directories and infect... [More]

This is a relatively harmless parasitic script virus. The virus itself is a script program in BATCH for DOS language. It is about 3 Kb in size. The virus searches for .BAT files in the current and system directories, and writes itself to the end of ... [More]

Bat.Naive.4894 is a not dangerous memory resident parasitic virus. It hooks INT 21h and writes itself at the beginning of .BAT-files. The infected file looks as follow (the strings between '[' and ']' are comments):@rem NAIVE @if exist naive.* go... [More]

It is a harmless nonmemory resident parasitic BAT virus. It searches for BAT files, then writes itself to the beginning of the file. While infecting a file the virus creates temporary #PG94.~ file in \DOS directory, and fails to infect, if there's ... [More]