This virus is polymorphic full-stealth infected of COM and EXE files and floppy disk bootsectors.
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 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.
Although the decryptor is polymorphic, the encryption used is simple xor with a variable key. Filesize increase is constant (4616 bytes).
Floppy boot sectors are infected whenever floppies accessed. Virus writes it's own code to the end of the floppy disk, original bootsector is relocated to the end of the root directory.
Cri-Cri infects files between approximately the sizes of 10000 and 60000 bytes.
The virus allocates 10kb of RAM while resident.
Cri-Cri activates on the 4th of June displaying this text in green color to the middle of the screen:
Cri-Cri ViRuS by Griyo96 ...tried, tested, not approved
Cri-Cri is written by the Spanish 29A virus group.
This virus was found in November 1996 on S3-Trio64 Chinese Windows 3.1 setup disks.