Virus Database


RedHack.1405

Description RedHack.1405

It is a dangerous memory resident encrypted parasitic virus. It hooks INT 21h and writes itself to the beginning of COM-files that are executed, opened, or accessed with FindFirst/Next ASCII DOS-functions. The virus scans the files that are executed for the string "Marek Sell", and reboots the computer if that string is found.
While installing the virus also hooks INT 8 (timer) to prevent debugging, and in some cases reboots computer. The virus contains the text:
(c) Red Hacker, Zielona Góra

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FrodoSoft Family

Description FrodoSoft Family

These are harmless not memory resident parasitic viruses. "Frodo.563,6433,656" are encrypted ones. They search for COM-files and write themselves to their ends. The viruses contain the internal text string: "(c) Frodo Soft".
"FrodoSoft.590" contains the internal text string: "(c) fotos rofd". In some cases it alters file attributes, sometimes it returns to DOS without execution of host program.
"FrodoSoft.633,656" delete MKS*.EXE files.

Frogalley.1500

Description Frogalley.1500

It is a memory resident very dangerous virus which hits .COM-files of current directory. It checks the write-protection by reading/writing through INT 13h. On 5th of every month it sets INT 9 and after 55th pressing on keyboard deletes files and types: "(V) AIDS R.2A - Welcome to Frog's Alley !, (c) STPII Laboratory - Jan 1990". It also hooks INT 9, 20h, 21h, 2Fh.

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