Threat Database Trojans Trojan:JS/Medfos.B


By Sumo3000 in Trojans

Threat Scorecard

Ranking: 8,081
Threat Level: 90 % (High)
Infected Computers: 1,123
First Seen: October 8, 2012
Last Seen: September 17, 2023
OS(es) Affected: Windows

Trojan:JS/Medfos.B is a JavaScript Trojan that takes over the affected web browser and reroutes search results in Google, Bing, Yahoo, and AOL to doubtful websites. Trojan:JS/Medfos.B is installed as a browser extension for Google Chrome on the corrupted PC; however, if you delete the extension, Trojan:JS/Medfos.B won't be eliminated from the targeted computer. Trojan:JS/Medfos.B is able to regain control of the web browser while it still exists on the machine. Trojan:JS/Medfos.B is downloaded on the victimized PC by another Trojan as a file called 'chromeupdate.crx', which will pose as a genuine extension for Google Chrome. While being installed, Trojan:JS/Medfos.B obtains control over the targeted web browser and reroutes search results in search engines to a website that encompasses and distributes other malware threats. Sometimes, Trojan:JS/Medfos.B shows an advertisement page, which strives to earn money for scammers.

File System Details

Trojan:JS/Medfos.B may create the following file(s):
# File Name Detections
1. chromeupdate.crx


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