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UNK_QuietRacket is an espionage-focused threat activity cluster tracked by Proofpoint. Its observed campaigns began on September 3, 2026, targeting government, consulting, and financial-sector organizations in Indonesia and Singapore. The cluster uses spearphishing links disguised as Indonesian conference invitations to direct victims to sites hosting the BlueMoon exploit kit. BlueMoon compromises Chromium-based browsers on Windows by chaining V8 code execution and sandbox escape with Windows local privilege escalation. Its exploitation chain includes CVE-2026-85046 and CVE-2026-85880, fingerprints the victim's system, and injects code into the parent Chrome broker process. UNK_QuietRacket uses a modified delivery stage to deploy a DLL-sideloading pair, whose malicious DLL retrieves and executes a .NET assembly in memory. The payload establishes persistence through a scheduled task that relaunches the sideloading sequence. The cluster resolves command-and-control infrastructure through Google's DNS-over-HTTPS service, using TXT records containing ChaCha20-encrypted address information, and subsequently communicates with Cloudflare Workers. Although it shares BlueMoon with other espionage clusters, UNK_QuietRacket is tracked as a distinct activity cluster rather than an alias or subgroup of those operators.
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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.
Attributed origin per open-source reporting.
25 distinct techniques observed across reporting, grouped by tactic. Hover any cell for the evidence excerpt; click through for MITRE's full description.
1 malware family attributed to this actor across reporting.
3 CVEs this actor has used in observed campaigns. 3 of them exploited in the wild.
CVE-2026-85046 is one of two remote-code-execution defects in the JavaScript engine for Chromium-based browsers. UTA0565 exploited it as part of a triple-link zero-day chain between September 3 and 4, before disclosure or patching.
CVE-2026-85880 is a privilege-escalation zero-day in Windows Advanced Local Procedure Call that Microsoft disclosed on September 8. UTA0565 exploited it in a triple-link chain with two Chromium-based browser RCE flaws.
CVE-2026-87491 is one of two remote-code-execution defects in the JavaScript engine for Chromium-based browsers. UTA0565 exploited it as part of a triple-link zero-day chain between September 3 and 4, before disclosure or patching.
27 indicators attributed to this actor: domains, IPs, hashes, and other artifacts pulled from reporting. View more in app.
16 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
Previously attributed by Proofpoint as conducting attacks involving the same chained zero-day vulnerabilities discussed in this reference.
Conducted suspected China-linked espionage against government, consulting, and financial targets in Indonesia and Singapore, using DLL side-loading and command-and-control via Google DNS-over-HTTPS and Cloudflare Workers.
Suspected China-aligned espionage cluster using BlueMoon against Indonesian and Singaporean government, consulting, and financial organizations, followed by DLL sideloading and C2 activity using DNS-over-HTTPS and Cloudflare Workers.
Связанная с Китаем группа, использовавшая BlueMoon против государственных, финансовых и консалтинговых организаций в Индонезии и Сингапуре.
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.