I-Worm.Doggy
Description I-Worm.Doggy
Doggy is a worm virus spreading via the Internet as an attachment to infected emails. The virus is written in Visual Basic Script (VBS).
The 'Doggy' virus creates its copy with the file 'virus.vbs' in the root directory on the C: drive.
To send out messages the virus uses MS Outlook and sends messages to all addresses found in a victim machine's Outlook address book. The messages sent by this worm have subject and body text in Chinese and contain the attachment file:
virus.vbs
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Cls.853
Description Cls.853
This virus is memory-resident and not dangerous. It by standard way infects COM-, EXE- and OVL-files when they are loaded into the memory. Approximately once an hour the virus clears the screen. It hooks INT 8, 13h, 21h. The virus produces an error that appears when a write-protected disk is accessed in the 13h interrupts level.
CMOS.a
Description CMOS.a
It is a dangerous memory resident stealth boot virus. It corrupts the CMOS memory. On loading from infected disk the virus copies itself to the address 9F80:0000, hooks INT 13h and writes itself to the MBR of the hard drive and the boot sectors of the floppy disks. The original MBR is saved to the second sector on the hard drive, the boot sector of floppy disk to the last sector of root directory on the disk.
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