# T1564.008 Email Hiding Rules > As of 2026-10-05, T1564.008 (Email Hiding Rules) appears in 11 tracked threats, first reported 2026-04-10 and most recently 2026-10-03, with linked actors including Storm-2755, Greatness PhaaS Operators, Kali365; it most often appears alongside T1566.002 (Spearphishing Link). - **Tracked threats:** 11 (11 high) - **First seen:** 2026-04-10 - **Last seen:** 2026-10-03 - **Threat actors:** 10 - **Detection rules:** 31 (counts only; Blue tier and above) ## Key facts - **ID:** T1564.008 - **Framework:** MITRE ATT&CK - **Tactics:** Stealth (formerly Defense Evasion) - **Matrix:** Enterprise - **Parent:** T1564 - **Data as of:** 2026-10-05 - **MITRE:** https://attack.mitre.org/techniques/T1564/008/ ## Activity timeline T1564.008 first appeared in tracked threats on 2026-04-10 and was most recently reported on 2026-10-03. The busiest month was 2026-08 with 7 reports, and 11 of the 11 threats were reported in the twelve months to 2026-10. ## How adversaries use it T1564.008 Email Hiding Rules is catalogued by MITRE ATT&CK under the Stealth (formerly Defense Evasion) tactic in the Enterprise matrix, as a sub-technique of [T1564 Hide Artifacts](https://intel.threadlinqs.com/technique/T1564). Threadlinqs maps 11 of 2623 tracked threats (0.4%) to it; by severity that is 11 high. Threats that use T1564.008 most often also use [T1566.002 Spearphishing Link](https://intel.threadlinqs.com/technique/T1566.002) (10 threats), [T1078.004 Cloud Accounts](https://intel.threadlinqs.com/technique/T1078.004) (9 threats), [T1114.002 Remote Email Collection](https://intel.threadlinqs.com/technique/T1114.002) (8 threats), [T1528 Steal Application Access Token](https://intel.threadlinqs.com/technique/T1528) (8 threats), [T1087.004 Cloud Account](https://intel.threadlinqs.com/technique/T1087.004) (7 threats). These are the techniques an intrusion set tends to chain with it, so they are the natural next places to look when it is observed. 10 tracked threat actors appear in the threats that use T1564.008; the most frequent are [Storm-2755](https://intel.threadlinqs.com/actor/Storm-2755) (3), [Greatness PhaaS Operators](https://intel.threadlinqs.com/actor/Greatness%20PhaaS%20Operators) (1), [Kali365](https://intel.threadlinqs.com/actor/Kali365) (1), [Kali365 PhaaS operators](https://intel.threadlinqs.com/actor/Kali365%20PhaaS%20operators) (1), [Scattered Spider](https://intel.threadlinqs.com/actor/Scattered%20Spider) (1). ## Mitigations MITRE ATT&CK lists 1 mitigation for T1564.008. - [M1047 Audit](https://attack.mitre.org/mitigations/M1047/) ## Data sources Telemetry that can reveal T1564.008, per MITRE ATT&CK. - Application Log — Application Log Content - Command — Command Execution - File — File Modification ## Threat actors using it - [Storm-2755](https://intel.threadlinqs.com/actor/Storm-2755) — 3 - [Greatness PhaaS Operators](https://intel.threadlinqs.com/actor/Greatness%20PhaaS%20Operators) — 1 - [Kali365](https://intel.threadlinqs.com/actor/Kali365) — 1 - [Kali365 PhaaS operators](https://intel.threadlinqs.com/actor/Kali365%20PhaaS%20operators) — 1 - [Scattered Spider](https://intel.threadlinqs.com/actor/Scattered%20Spider) — 1 - [ShinyHunters](https://intel.threadlinqs.com/actor/ShinyHunters) — 1 - [Storm-2372](https://intel.threadlinqs.com/actor/Storm-2372) — 1 - [Storm-2992](https://intel.threadlinqs.com/actor/Storm-2992) — 1 - [UTA0304](https://intel.threadlinqs.com/actor/UTA0304) — 1 - [UTA0307](https://intel.threadlinqs.com/actor/UTA0307) — 1 ## Tracked threats 11 tracked threats use T1564.008. - [EvilTokens (Storm-2992): AI-Chatbot Device-Code Phishing Service Disrupted by Microsoft DCU, Plus AI-Enabled…](https://intel.threadlinqs.com/threat/TL-2026-2873) — high — 2026-10-03 - [Bad Grammar is Dead — AI-Driven Tone-Matching Phishing via LLM Executive Mimicry](https://intel.threadlinqs.com/threat/TL-2026-2088) — high — 2026-08-20 - [Mass Phishing and Scam Campaign Abuses 450+ Compromised Google Workspace Accounts in the Education Sector](https://intel.threadlinqs.com/threat/TL-2026-2004) — high — 2026-08-13 - [Payroll Pirates (Storm-2755) Abuse Microsoft Graph for HR/Finance Staff Recon After AiTM Account Compromise](https://intel.threadlinqs.com/threat/TL-2026-1970) — high — 2026-08-10 - [U.S. Defense Manufacturer IEH Corporation Breached via Phishing, Potential Export-Controlled Data Exposure](https://intel.threadlinqs.com/threat/TL-2026-1960) — high — 2026-08-09 - [Unit 42: Identity Compromise Is the Primary Attack Vector in Nearly 90% of Incidents](https://intel.threadlinqs.com/threat/TL-2026-1938) — high — 2026-08-08 - [Microsoft 365 AitM Phishing Campaign Hijacks Sessions via Residential Proxies to Harvest Payroll and Finance…](https://intel.threadlinqs.com/threat/TL-2026-1930) — high — 2026-08-07 - [Greatness PhaaS Platform Spoofs RingCentral in Adversary-in-the-Middle and Device Code Phishing Campaign…](https://intel.threadlinqs.com/threat/TL-2026-1871) — high — 2026-08-04 - [EvilTokens Phishing-as-a-Service: Microsoft OAuth 2.0 Device Authorization Grant (Device Code) Phishing…](https://intel.threadlinqs.com/threat/TL-2026-0888) — high — 2026-06-20 - [Kali365 PhaaS — Telegram-Distributed Microsoft 365 Device-Code Phishing with OAuth Token Theft & MFA Bypass…](https://intel.threadlinqs.com/threat/TL-2026-0560) — high — 2026-05-22 - [Storm-2755 'Payroll Pirate' Campaign: AiTM Phishing and Workday Account Hijacking Targeting Canadian…](https://intel.threadlinqs.com/threat/TL-2026-0346) — high — 2026-04-10 ## Related CVEs CVEs referenced by the tracked threats that use T1564.008, most frequent first. - [CVE-2025-27152](https://intel.threadlinqs.com/cve/CVE-2025-27152) ## Detection coverage Threadlinqs maintains 31 detection rules mapped to T1564.008 (SPL 11, KQL 10, Sigma 10). Rule content is available to Blue tier accounts and above; this page shows counts only. 31 detection rules (SPL/KQL/Sigma), Blue and above: https://threadlinqs.com/pricing ## Parent technique [T1564 Hide Artifacts](https://intel.threadlinqs.com/technique/T1564) — 174 tracked threats at the technique level. ## Links - Canonical page: https://intel.threadlinqs.com/technique/T1564.008 - All techniques: https://intel.threadlinqs.com/techniques - Full detection coverage and IOCs: https://intel.threadlinqs.com/mcp (Purple tier)