Hundreds of regional and national news websites in the United States are delivering malware as a result of a supply chain attack involving one of their service providers.
Cybersecurity company Proofpoint reported on Wednesday that a threat actor it tracks as TA569 appears to be behind the attack. The hackers have targeted an unnamed media company that serves many news outlets in the US.
More than 250 news sites are impacted, including in Boston, New York, Chicago, Washington DC, Miami, Palm Beach and Cincinnati. The actual number of victims could be higher.
“TA569 historically removed and reinstated these malicious JS injects on a rotating basis. Therefore the presence of the payload and malicious content can vary from hour to hour and shouldn’t be considered a false positive,” Proofpoint explained in a Twitter thread.
SocGholish, also known as FakeUpdates because it’s often delivered as fake browser updates, has been around since at least 2017.
Web security firm Sucuri reported in August that it had seen 25,000 sites infected with the malware since the beginning of January and 61,000 infected sites in 2021.
In a previous report, Proofpoint said it had seen SocGholish being leveraged for ransomware distribution.