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UNC4487 is an uncategorized threat cluster assessed as a suspected espionage actor active since at least October 2022. The group has been linked to compromises of Ukrainian government-related websites and to social-engineering operations that redirected intended victims into executing malware, including MATANBUCHUS and the modular macOS backdoor CHILLYHELL. Reported activity includes breaching a Ukrainian auto insurance website used by government officials for official travel and using that access as a delivery mechanism for follow-on malware. UNC4487 is associated with targeted intrusion activity rather than broad opportunistic crime. Its observed tradecraft includes initial access through website compromise, victim redirection, and malware delivery via socially engineered execution. Malware attributed to the cluster, particularly CHILLYHELL, demonstrates post-compromise capabilities including host profiling, persistence through multiple macOS mechanisms, remote shell access, payload retrieval, password cracking and brute-force activity, and defense evasion through timestomping and changing command-and-control methods. CHILLYHELL has also been observed using multiple persistence approaches on macOS, including LaunchAgents, LaunchDaemons, and shell profile modification. The cluster remains tracked under an uncategorized designation, and no high-confidence country of origin is established here. Known associated malware includes CHILLYHELL and MATANBUCHUS.
Mallory correlates actor tradecraft and target patterns against your stack, your sector, and your geography. See overlap before they land.
Who, where, and (when attributed) which flag flies behind the operation. Pulled from open-source reporting and Mallory's analyst review.
Sectors the actor has been observed targeting.
Geographies tied to known operations.
12 distinct techniques observed across reporting, grouped by tactic. Hover any cell for the evidence excerpt; click through for MITRE's full description.
2 malware families attributed to this actor across reporting.
2 indicators attributed to this actor: domains, IPs, hashes, and other artifacts pulled from reporting. View more in app.
5 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
Deployed the ChillyHell macOS backdoor against a Ukrainian auto insurance website used by government employees.
Deployed the ChillyHell macOS backdoor against a Ukrainian auto insurance website used by government employees.
Linked to ChillyHell and previously known for targeting a Ukrainian auto insurance website to deliver MATANBUCHUS malware.
UNC4487 is linked to the deployment of the ChillyHell modular macOS backdoor, which has been used to breach a Ukrainian auto insurance website used by government officials. The group is believed to be a cybercrime group, using targeted attacks rather than wide distribution.
Match sector + geo + tech-stack targeting against your real footprint.
Every observed MITRE ATT&CK technique, grouped by tactic.
Families this actor is known to deploy, with IOCs and behavior.
CVEs this actor has used in known campaigns.
YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.
Domains, IPs, and hashes tied to this actor, refreshed continuously.