22 What is a dropper? (Computer virus)
Description
This article is from the Computer Viruses FAQ, by Nick FitzGerald n.fitzgerald@csc.canterbury.ac.nz with numerous contributions by others.
22 What is a dropper? (Computer virus)
A DROPPER is a program that has been designed or modified to "install" a
virus onto the target system. The virus code is usually contained in a
dropper in such a way that it won't be detected by virus scanners that
normally detect that virus (i.e., the dropper program is not *infected*
with the virus). While quite uncommon, a few droppers have been
discovered. A dropper is effectively a Trojan Horse (see B3) whose
payload is installing a virus infection. A dropper which installs a
virus only in memory (without infecting anything on the disk) is
sometimes called an "injector".
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