A dropper is a program (malware component) that has been designed to "install" some sort of malware (virus, backdoor, etc) to a target system. The malware code can be contained within the dropper (single-stage) in such a way as to avoid detection by virus scanners or the dropper may download the malware to the target machine once activated (two stage).
There are two major types of droppers, those that do not require user interaction which perform through the exploitation of a system by some vulnerability and those that require user interaction by convincing the user that it is some legitimate or benign program. A dropper which installs a malware program to memory only is sometimes called an injector.
WIPO ASSIGNS PATENT TO YONWOO FOR "LIQUID DROPPER ALLOWING QUANTITATIVE WITHDRAWAL, AND A COSMETIC CONTAINER EQUIPPED WITH THE SAME" (SOUTH KOREAN INVENTOR)
Apr 28, 2011; GENEVA, April 28 -- Publication No. WO/2011/049267 was published on April 28. Title of the invention: "LIQUID dropper...
Transparent Dropper Tube is designed for eye applications.(Neopac Introduces the Transparent Dropper Tube for Eye Applications)
May 23, 2012; Featuring transparent body that lets manufacturers and consumers check purity of contents, dropper tube satisfies legal...