Virus Database

Fyodor.145

Description Fyodor.145

It is a very dangerous nonmemory resident overwriting virus. It searches for .COM files, then overwrites them, displays the message "Bad command or file name" and returns to DOS. The only interesting feature of this virus: it has PKZip file format, i.e. the header of file has the same ID-stamp and fields that PKZip archives have. The virus also contains the text strings:
*.com
fyodor

Check other viruses! Be aware! Use Antiviral Software

Konkoor.1746

Description Konkoor.1746

This is a dangerous memory resident parasitic virus. While executing an infected program, this virus searches for the DOS address in the INT 21h handler, then searches for COM files, and hits them. Then the virus hooks INT 21h, and intercepts the FindFirst function (AH=4Eh). During calls to that function, the virus searches and infects COM files and also upon the execution of an infected program. While infecting, the virus writes itself to the beginning of the files, and encrypts the host file. On the 100th infection, or depending on the system date, it erases CMOS and hard drive sectors, and displays the following messages:
Warning !!! KONKOOR Must be destroyed !
Sig: -= The Real Computer Scientists =-
and
KONKOOR V1.50 -- Date: 26 September 1993
While installing, it also displays the message:
Bad command or file name

Konkoor.1844

Description Konkoor.1844

This is a dangerous memory resident parasitic virus. While executing an infected program, this virus searches for the DOS address in the INT 21h handler, then searches for COM files, and hits them. Then the virus hooks INT 21h, and intercepts the FindFirst function (AH=4Eh). During calls to that function, the virus searches and infects COM files and also upon the execution of an infected program. While infecting, the virus writes itself to the beginning of the files, and encrypts the host file. On the 100th infection, or depending on the system date, it erases CMOS and hard drive sectors, and displays the following messages:
Warning !!! KONKOOR Must be destroyed !
Sig: -= The Real Computer Scientists =-
and
KONKOOR V1.50 -- Date: 26 September 1993
While installing, it also displays the message:
Bad command or file name

Home