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Setiri is a trojan publicly presented by SensePost in 2002 and described in the provided content as the first publicized trojan to implement command-and-control communication through a web browser. The malware is characterized as a "talk-back trojan" that connects back to arbitrary web servers on the Internet, using web traffic for controller communication. The content associates Setiri with early advocacy for website white-listing as a defensive control, specifically to restrict users to approved sites and thereby reduce the ability of such trojans to communicate externally. High-confidence behavior directly mentioned in the content is limited to browser-based C2 / web-based callback communication. The provided material does not specify infection vectors, targeted operating systems, targeted industries, associated threat actors beyond its presentation by SensePost, or concrete indicators of compromise.
Mallory pivots from this family to the IOCs, detections, and named campaigns that touch your stack, and pages you when something new lands.
2 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A trojan that pioneered the use of web browsers for command and control communication, making detection and blocking more difficult.
Setiri is a talk-back trojan that connects back to arbitrary web servers on the Internet, likely for command and control or data exfiltration purposes.
Match every observed IP, domain, and hash against your live telemetry.
Named campaigns wielding this family, with evidence pinned to each claim.
CVEs this family uses for access and lateral movement.
YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.
Every documented technique, ranked by evidence weight.
Reddit, Mastodon, and CTI community discussion around this family.