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HoodyHyena is a suspected South Asian threat actor associated with malicious Microsoft Office document campaigns exploiting CVE-2026-21509 to deliver payloads without VBA macros and with minimal user interaction. Activity linked to this name includes weaponized Word 97-2003 documents that abuse OLE ObjectPool manipulation and an embedded Shell Link using an Internet Explorer IDLIST structure to retrieve and launch a remote ClickOnce application. The actor has used procurement-themed lures tailored to Pakistani government or public-service contexts, including material impersonating Sindh Integrated Emergency and Health Services, and has staged payloads on compromised legitimate Pakistani government infrastructure to improve trust and reduce detection. Observed tradecraft indicates emphasis on initial access, defense evasion, and post-exploitation delivery through trusted hosting and low-detection document exploits. Metadata associated with observed samples points to a South Asian build environment, including use of WPS Office with an English-India locale, while available reporting assesses the activity as distinct from the better-known APT28 cluster despite overlap in the broader CVE-2026-21509 exploitation ecosystem. HoodyHyena has also been associated with a separate lure themed around Russian vehicle inspection material, indicating reuse of the exploit chain across different targeting themes. Attribution beyond a probable South Asian nexus remains uncertain.
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2 distinct techniques observed across reporting, grouped by tactic. Hover any cell for the evidence excerpt; click through for MITRE's full description.
1 CVE this actor has used in observed campaigns. 1 of them exploited in the wild.
2 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
Referenced as a tagged sample within the broader CVE-2026-21509 cluster, using a Russian vehicle inspection RTF lure.
Associated in the content with a separate CVE-2026-21509 exploit sample using a Russian vehicle inspection lure in an RTF document.
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.