Z-90

Threat description

Details

Category: Malware
Type: Virus
Platform: W32

Summary

Z-90 activates in July and December if an infected file is executed and the time is exactly 09:03. At this time the virus encrypts the DOS boot sector of drive C:, making the PC unbootable (encryption is done by XORing with 16-bit hex value 0903). After this it displays this message:

VIRUS Z-90. JUNIO 95. M         EXICOSE MURIO TU DISCO         DUROTU LO PUEDES RE         VIVIRHAS BAILADO ALGUNA VEZ CON TU NOVIA A LE TENUE LUZ DE LA 		  

Z-90 was found in the wild in Brazil in April 1996.



Removal

Automatic action

Depending on the settings of your F-Secure security product, it will either automatically delete, quarantine or rename the suspect file, or ask you for a desired action.

More scanning & removal options

More information on the scanning and removal options available in your F-Secure product can be found in the Help Center.

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

Contact Support

F-Secure customers can request support online via the Request support or the Chat forms on our Home - Global site.







Description Details: Peter Szor, F-Secure, 1996


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