Google Ad For GIMP.org Served Info-Stealing Malware Via Lookalike

joshuark shares a report from BleepingComputer, written by Ax Sharma: Searching for 'GIMP' on Google as recently as last week would show visitors an ad for 'GIMP.org,' the official website of the well known graphics editor, GNU Image Manipulation Program. This ad would appear to be legitimate as it'd state 'GIMP.org' as the destination domain. But clicking on it drove visitors to a lookalike phishing website that provided them with a 700 MB executable disguised as GIMP which, in reality, was malware. Reddit user ZachIngram04 earlier shared the development stating that the ad previously took users to a Dropbox URL to serve malware, but was soon "replaced with an even more malicious one" which employed a fake replica website 'gilimp.org' to serve malware. BleepingCompuer observed another domain 'gimp.monster' related to this campaign. To pass off the trojanized executable as GIMP in a believable manner to the user, the threat actor artificially inflated the malware, that is otherwise under 5 MB in size, to 700 MB by a simple technique known as binary padding. It still isn't clear if this instance was a slip up caused by a potential bug in Google Ad Manager that allowed malvertising.

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