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Mallory pivots from this family to the IOCs, detections, and named campaigns that touch your stack, and pages you when something new lands.
13 distinct techniques documented for this family, organized by ATT&CK tactic.
Payloads are encrypted by a 10-byte static XOR key that is hard-coded inside the Comfoo binary.
The Comfoo C2 server turns out to be a rendezvous-type traffic relay program... it passes traffic between Comfoo victims and the Comfoo master console operated by the threat actors.
HTran is sometimes used to add an additional layer of untraceability to the victim connection. Likewise, the administrator can add other layers of proxies or VPN connections to the console connection side of the communication.
The Comfoo RAT has the following features: File upload/download/execute
1 indicator attributed across vendor reports, sandbox runs, and researcher write-ups. Full values are available in Mallory.
File hashes (MD5, SHA-1, SHA-256) from samples and reports.
2 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A long-running remote access trojan used in cyber-espionage campaigns. It provides persistent backdoor access, gathers system and network information, logs keystrokes, captures screenshots, uploads/downloads/executes files, and offers command shell access. It uses encrypted HTTP-based C2 communications and relay infrastructure to obscure operator access.
Named malware/campaign-associated malware referenced as sharing infrastructure with Luckycat.
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.