Email-Worm.Win32.Bagle.ef
Description Email-Worm.Win32.Bagle.ef
This Bagle variant is unable to replicate independently. However, all other functionality indicated that this worm is a member of the Bagle family. It was mass mailed using spamming technologies. The worm arrives as an attachment to infected messages. The attachment is a ZIP file approximately 5KBall
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Oropax
Description Oropax
This is not a dangerous memory resident parasitic virus. It hooks INT 8, 20h, 12h, 27h. The virus writes itself to the end of .COM files. Being executed it searches for the files, then stays memory resident and infects the files that are accessed. The virus manifests itself by playing a tune.
Orphan.174
Description Orphan.174
It is a very dangerous memory resident multipartite virus. When an infected file is executed, the virus inserts its code into the MBR of the hard drive - the virus copies its code into free space in the MBR and patches the code of bootstrap loader to get control. Such way of infection is correct only for standard bootstrap routine, in case of specific code the virus will corrupt the MBR and the system will halt on next rebooting.
On loading from infected MBR the virus copies itself into Interrupt Vectors Table, hooks INT 13h and overwrites EXE files on floppy disks (when files are copied on floppy disk).
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