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Threat actors

UAT-11587

☆ pin
Reports
3
First seen
Sep 30, 2026
Last seen
Oct 5, 2026
Motivation
Espionage

Relationships

CVE-2026-76504, in 1 of UAT-11587's report, exploited in the wildCVE-2026-76504CVE-2026-86950, in 1 of UAT-11587's report, exploited in the wildCVE-2026-86950CVE-2026-88771, in 1 of UAT-11587's report, exploited in the wildCVE-2026-88771CVE-2026-88772, in 1 of UAT-11587's report, exploited in the wildCVE-2026-88772Reports targeting GovernmentGovernmentReports targeting OtherOtherUAT-11587

Filled ◆ = CVE exploited in the wild. Entities that appear together in Signalis reporting — co-mention, not confirmed collaboration. Reports naming many actors at once (weekly roundups) are excluded from relationship edges.

Targeting

Sectors
Government ×2Other ×1

Top ATT&CK techniques

T1071.001 Web Protocols ×3T1566 Phishing ×3T1005 Data from Local System ×2T1059.001 Command and Scripting Interpreter: PowerShell ×2T1041 Exfiltration Over C2 Channel ×2T1566.002 Phishing: Spearphishing Link ×2T1082 System Information Discovery ×1T1218.005 System Binary Proxy Execution: Mshta ×1T1078 Valid Accounts ×1T1562.001 Disable or Modify Tools ×1T1505.003 Web Shell ×1T1547.001 Boot or Logon Autostart Execution: Registry Run Keys / Startup Folder ×1

Indicators

hash_sha256 ×63filename ×28url ×20domain ×18cve ×5hash_md5 ×2ip_v4 ×1

Indicator values are available on Pro and via the API.

Associated CVEs

CVE-2026-76504 (exploited)CVE-2026-86950 (exploited)CVE-2026-88771 (exploited)CVE-2026-88772 (exploited)CVE-2026-90970

Recent reports

High

Weekly Threat Intelligence Report – 5 October

Check Point ResearchHigh

Antino Backdoor Uses Outlook and OneDrive for C2 in China-Nexus Espionage Campaign

The Hacker NewsCritical

China-nexus UAT-11587 targets Asian governments with Antino backdoor via spear-phishing

Cisco Talos

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