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Black Monday


Black Monday



The name of this virus is derived from a text string found inside it:

Black Monday 2/3/90 KV KL MAL

It is rarely possible to restore infected .EXE files, as the virus may overwrite some bytes at the end of the file.


A 781 byte, possibly older variant, which is only able to infect COM files.

Disinfection & Removal

Automatic Disinfection

Allow F-Secure Anti-Virus to disinfect the relevant files.

For more general information on disinfection, please see Removal Instructions.

Submit a sample

Wondering if a file or URL is malicious? Submit a sample to our Lab for analysis via the Sample Analysis System (SAS)

Give And Get Advice

Give advice. Get advice. Share the knowledge on our free discussion forum.