However, intended targets will see a replica of the real Notepad++ website hosted at notepadxtremecom: Fingerprinting for VM detectionĪ second level of filtering happens when the user clicks on the download link where JavaScript code performs a system fingerprint. This is likely an IP check that discards VPNs and other non genuine IP addresses and instead shows a decoy site: The image below is a collage of malicious ads we observed recently, all run by the same threat actor but via different ad accounts, likely compromised.Ī first level of filtering happens when the user clicks on one of these ads. The threat actor is running a campaign targeting Notepad++, a popular text editor for Windows as well as similar software programs such as PDF converters. It is unique in its way to fingerprint users and distribute time sensitive payloads. In this blog post, we look at a malvertising campaign that seems to have flown under the radar entirely for at least several months. We believe this evolution will have a real world impact among corporate users getting compromised via malicious ads eventually leading to the deployment of malware and ransomware. Several of the threat actors we are tracking have improved their techniques to evade detection throughout the delivery chain. In recent weeks, we have noted an increase in malvertising campaigns via Google searches.
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