It is not a dangerous memory resident parasitic virus. It hooks INT 1Ch, 21h and writes itself to the end of COM and EXE files that are executed. The MCB header of block of the system memory that is occupied by the virus contains the string "Tamanna". Depending on the current date the virus displays the message:
Wishall
Facts need no recognition
RM - A silent friend
DHAKA
Press T to reconcile with my Wish
OK carry on >>
and waits for 'T' key.
If some another virus infects the file that is already infected by "Tamanna" virus, while executing that file "Tamanna" displays the message:
File has been modified.
Rebuilding...
Standby while rebooting
