Threat Description



Aliases: IstanbulCCC, Tubo, ystanbul
Category: Malware
Type: Virus
Platform: W32


This is a typical stealth boot sector virus, which beeps and displays this text after every 15 infected floppies:

ystanbulCCC was here! He he  

Otherwise the virus just spreads.

IstanbulCCC was reported to be in the wild in the UK in April 1996.


Automatic action

Once detected, the F-Secure security product will automatically disinfect the suspect file by either deleting it or renaming it.


Detailed instructions for F-Secure security products are available in the documentation found in the Downloads section of our Home - Global site.

You may also refer to the Knowledge Base on the F-Secure Community site for further assistance.

Technical Details:Peter Szor, F-Secure, 1996


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