
There are instances where more than one malware infecting at a same time because of many vulnerabilities and many ways that different malware can attack on a PC. It leads to severe situations and that will crash the PC entirely. There is one particular exploit that brings all the malware and trojans at a time HTML_SHELLCOD.SM that exploits CVE- 2010 3962 and because of which following trojans and malware attack the PC:
TROJ_LAMECHI.D,
JS_EXPLOIT.ADA,
...