UNC6588
UNC6588 is a China-aligned cyber-espionage activity cluster tracked by Google. The group has been observed exploiting the React2Shell vulnerability (CVE-2025-55182) for initial access and then using wget to download and execute the COMPOOD backdoor, also referred to in the content as Compood/Pood. COMPOOD masquerades as a legitimate binary, including as Vim, to maintain persistent access. The malware has historically been linked to suspected China-nexus espionage activity since 2022. UNC6588 is listed among multiple Chinese cyber-espionage groups exploiting React2Shell, and reporting in the content explicitly describes it as another Chinese espionage group.
Know when an actor pivots toward your sector
Mallory correlates actor tradecraft and target patterns against your stack, your sector, and your geography. See overlap before they land.
Tradecraft
1 distinct technique observed across reporting, grouped by tactic. Hover any cell for the evidence excerpt; click through for MITRE's full description.
Recent activity
14 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
Listed as a threat actor associated in the report’s aggregated section with exploitation activity around React2Shell (CVE-2025-55182) and related RSC/Next.js vulnerabilities.
Named in an aggregated list of actors associated with React2Shell (CVE-2025-55182) exploitation activity (UNC-style naming suggests an uncategorized cluster).
China-nexus threat actor exploiting CVE-2025-55182 to deploy COMPOOD backdoor.
UNC6588 is a China-nexus threat actor group exploiting the React2Shell vulnerability to deliver the backdoor COMPOOD.
The version that knows your environment.
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.