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After carrying out the above payload, the virus hangs the operating system, requiring users to perform a Hard boot by forcibly shutting the machine down by cutting the power, then turning the machine back on. Afterwards, the PC is completely unusable, as all .bat, .com, .exe, .ht, .hta, .pif and .scr files have been hooked to the virus itself ...
The virus writes its own code into the host program. When the program runs, the written virus program is executed first, causing infection and damage. A worm does not need a host program, as it is an independent program or code chunk. Therefore, it is not restricted by the host program, but can run independently and actively carry out attacks ...
For example, code in the virus suppresses the printing of console messages if, say, the virus is not able to infect a file on a read-only device such as a floppy disk. One of the clues that a computer is infected is the mis-capitalization of the well-known message " Bad command or file name " as "Bad Command or file name".
A computer virus [1] is a type of malware that, when executed, replicates itself by modifying other computer programs and inserting its own code into those programs. [ 2 ] [ 3 ] If this replication succeeds, the affected areas are then said to be "infected" with a computer virus, a metaphor derived from biological viruses .
He defines a "virus" as "a program that can 'infect' other programs by modifying them to include a possibly evolved copy of itself." Cohen demonstrates a virus-like program on a VAX11/750 system at Lehigh University. The program could install itself in, or infect, other system objects. [16] [failed verification]
Blaster (also known as Lovsan, Lovesan, or MSBlast) was a computer worm that spread on computers running operating systems Windows XP and Windows 2000 during August 2003. [1] ...