Z-90

Classification

Malware

Virus

W32

Z-90

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

Based on the settings of your F-Secure security product, it will either move the file to the quarantine where it cannot spread or cause harm, or remove it.

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Technical Details

N/A

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