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And the impact of such changes on a browser is significant. As Microsoft explained: “Cybercriminals abusing affiliate programs is nothing new – browser modifiers are some of the oldest types of threats.
“However, the fact that this campaign uses a piece of malware that affects multiple browsers is an indication of how this type of threat continues to become increasingly sophisticated.
“In addition, the malware maintains persistence and filters website credentials, exposing affected devices to additional risk.”
Windows 10 makers said that between May and September they detected 159 unique domains used to distribute hundreds of thousands of malware samples as part of the Adrozek campaign.
Some of these domains were active for only one day, while others were active for more than 120 days.
Many of these domains hosted tens of thousands of URLs, with one of them hosting nearly 250,000, underscoring the massive infrastructure used in this latest malware campaign.
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