Evolution of Chrome Malware

ChromeLoader proves to be an extremely prevalent and persistent malware. It initially drops as an .iso and can be used to leak users’ browser credentials, harvest recent online activity and hijack the browser searches to display ads. The VMware Carbon Black Managed Detection and Response (MDR) team observed the first Windows variants of ChromeLoader in the wild in January 2022 and the macOS version in March 2022.

There are some variants known to ChromeLoader, including ChromeBack and Choziosi Loader. Unit 42 researchers have found evidence of The Real First Windows Variant using the AHK(AutoHotKey) tool to compile a malicious executable and drop version 1.0 of the malware.

Although this sort of malware is created with an intent to feed adware to the user, ChromeLoader also increases the attack surface of an infected system. This can eventually lead to much more devastating attacks such as ransomware.


Evolution of Chrome Malware
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