# Nightmare-Eclipse

> As of 2026-09-04, Nightmare-Eclipse is a threat actor tracked by Threadlinqs Intelligence across 5 threats spanning vulnerability, zero day. ATT&CK coverage spans 57 techniques across 13 tactics in 5 of 5 tracked threats. Most-observed techniques: T1068 (Exploitation for Privilege Escalation), T1112 (Modify Registry), T1134 (Access Token Manipulation).

- **Tracked threats:** 5
- **Categories:** VULNERABILITY, ZERO_DAY
- **As of:** 2026-09-04

## ATT&CK techniques observed

57 techniques observed across 5 of 5 tracked threats. Tactics: Stealth (formerly Defense Evasion) (10), Discovery (7), Credential Access (6), Persistence (6), Privilege Escalation (6), Defense Impairment (5).

- [T1068](https://intel.threadlinqs.com/technique/T1068) Exploitation for Privilege Escalation — Privilege Escalation — observed in 4 of 5 tracked threats
- [T1112](https://intel.threadlinqs.com/technique/T1112) Modify Registry — Defense Impairment — observed in 3 of 5 tracked threats
- [T1134](https://intel.threadlinqs.com/technique/T1134) Access Token Manipulation — Privilege Escalation — observed in 3 of 5 tracked threats
- [T1548](https://intel.threadlinqs.com/technique/T1548) Abuse Elevation Control Mechanism — Privilege Escalation — observed in 3 of 5 tracked threats
- [T1003](https://intel.threadlinqs.com/technique/T1003) OS Credential Dumping — Credential Access — observed in 2 of 5 tracked threats
- [T1003.002](https://intel.threadlinqs.com/technique/T1003.002) Security Account Manager — Credential Access — observed in 2 of 5 tracked threats
- [T1005](https://intel.threadlinqs.com/technique/T1005) Data from Local System — Collection — observed in 2 of 5 tracked threats
- [T1012](https://intel.threadlinqs.com/technique/T1012) Query Registry — Discovery — observed in 2 of 5 tracked threats
- [T1059.003](https://intel.threadlinqs.com/technique/T1059.003) Windows Command Shell — Execution — observed in 2 of 5 tracked threats
- [T1078.003](https://intel.threadlinqs.com/technique/T1078.003) Local Accounts — Initial Access — observed in 2 of 5 tracked threats
- [T1087.001](https://intel.threadlinqs.com/technique/T1087.001) Local Account — Discovery — observed in 2 of 5 tracked threats
- [T1106](https://intel.threadlinqs.com/technique/T1106) Native API — Execution — observed in 2 of 5 tracked threats
- [T1547](https://intel.threadlinqs.com/technique/T1547) Boot or Logon Autostart Execution — Persistence — observed in 2 of 5 tracked threats
- [T1552](https://intel.threadlinqs.com/technique/T1552) Unsecured Credentials — Credential Access — observed in 2 of 5 tracked threats
- [T1574](https://intel.threadlinqs.com/technique/T1574) Hijack Execution Flow — Stealth (formerly Defense Evasion) — observed in 2 of 5 tracked threats

## Tracked threats

- [FalconFlank: Unpatched Local Privilege Escalation PoC in CrowdStrike Falcon Sensor via Office Macro Remediation](https://intel.threadlinqs.com/threat/TL-2026-2330) — HIGH
- [LegacyHive Exploitation Chain Bypasses Windows Security Even With July 2026 Patches Installed](https://intel.threadlinqs.com/threat/TL-2026-1742) — HIGH
- [LegacyHive: Windows User Profile Service (ProfSvc) Local Privilege Escalation Zero-Day PoC (Unpatched, No CVE)](https://intel.threadlinqs.com/threat/TL-2026-1414) — HIGH
- [LegacyHive: Unpatched Windows User Profile Service (profsvc) Registry Hive Hijack Privilege Escalation 0-Day PoC Released by Nightmare-Eclipse](https://intel.threadlinqs.com/threat/TL-2026-1373) — HIGH
- [YellowKey & GreenPlasma — Unpatched Windows BitLocker Bypass & CTFMON LPE Zero-Days With Public PoC (Chaotic/Nightmare Eclipse)](https://intel.threadlinqs.com/threat/TL-2026-0512) — CRITICAL

## Full data

Infrastructure, IOC values and detection queries (Splunk SPL / Microsoft KQL / Sigma) require the Threadlinqs MCP server (Purple tier): https://intel.threadlinqs.com/mcp

Canonical: https://intel.threadlinqs.com/actor/Nightmare-Eclipse