Virus Database

Trojan-Downloader.Win32.ConHook.b

Description Trojan-Downloader.Win32.ConHook.b
This program downloads other Trojan programs via the Internet, and installs them on the victim machine. The program file is 17408 bytes in size. It is not packed in any way, and all strings are encoded. The file itself is called req.dll. This file is registered in the system registry as a Browserall

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BAT.PG94

Description BAT.PG94

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 no such directory on the current drive. The virus also uses the FIND utility, and fails to infect the files if there is no such utility in PATH.
The virus contains the text:
Ha ha ha! Cybrphuc '94

BAT.PolyBat

Description BAT.PolyBat

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 one batch file that is found.
The virus uses polymorphic BAT engine similar to the "Batalia6" virus - it compresses itself with PKZIP and password, and adds to its entry code "junk" strings.
The virus displays the text:
(: PolyBat Morpher :)

While infecting a file the virus uses external DOS command and utilities: PKZIP, PKUNZIP, ATTRIB, FIND, and fails to infect the files if there are no such programs in PATH.

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