Attackers Are Taking Advantage of the Open-Source Service Interactsh for Malicious Purposes
Summary: Unit 42 observed attackers abusing Interactsh, an open-source out-of-band interaction tool released April 16, 2021, to validate exploit success, with the first abuse attempts seen April 18, 2021. Across March 7 to September 7, Unit 42 recorded roughly 32,200 Interactsh hits via PAN-DB URL filtering, with activity rising in June and DNS queries concentrated in the United Kingdom, Ecuador, and the U.S.
What you should know: Each unique Interactsh URL functions as a command-and-control endpoint, and because the traffic rides on a legitimate open-source service, defenders cannot simply block it by service, IP, or server. Three IPs with heavy Interactsh activity were flagged as malware or phishing, and the scanning volume suggests exploit attempts are being tested at scale before follow-on attacks.
Read the original at Unit 42 Palo Alto Networks ↗
- Topics
- Zero-Days & Exploits
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