# GreyVibe

> As of 2026-08-04, GreyVibe is a Russia-nexus threat actor tracked by Threadlinqs Intelligence across 3 threats spanning threat intel, campaign, malware. Also known as GreyVibe cluster, UAC-0098. ATT&CK coverage spans 61 techniques across 12 tactics in 3 of 3 tracked threats. Most-observed techniques: T1082 (System Information Discovery), T1027 (Obfuscated Files or Information), T1059 (Command and Scripting Interpreter).

- **Nation:** Russia
- **Tracked threats:** 3
- **Categories:** THREAT_INTEL, CAMPAIGN, MALWARE
- **Also known as:** GreyVibe cluster, UAC-0098
- **As of:** 2026-08-04

## ATT&CK techniques observed

61 techniques observed across 3 of 3 tracked threats. Tactics: Collection (9), Initial Access (9), Resource Development (9), Stealth (formerly Defense Evasion) (8), Command and Control (7), Credential Access (6).

- [T1082](https://intel.threadlinqs.com/technique/T1082) System Information Discovery — Discovery — observed in 3 of 3 tracked threats
- [T1027](https://intel.threadlinqs.com/technique/T1027) Obfuscated Files or Information — Stealth (formerly Defense Evasion) — observed in 2 of 3 tracked threats
- [T1059](https://intel.threadlinqs.com/technique/T1059) Command and Scripting Interpreter — Execution — observed in 2 of 3 tracked threats
- [T1071.001](https://intel.threadlinqs.com/technique/T1071.001) Web Protocols — Command and Control — observed in 2 of 3 tracked threats
- [T1102](https://intel.threadlinqs.com/technique/T1102) Web Service — Command and Control — observed in 2 of 3 tracked threats
- [T1113](https://intel.threadlinqs.com/technique/T1113) Screen Capture — Collection — observed in 2 of 3 tracked threats
- [T1140](https://intel.threadlinqs.com/technique/T1140) Deobfuscate/Decode Files or Information — Stealth (formerly Defense Evasion) — observed in 2 of 3 tracked threats
- [T1204](https://intel.threadlinqs.com/technique/T1204) User Execution — Execution — observed in 2 of 3 tracked threats
- [T1505](https://intel.threadlinqs.com/technique/T1505) Server Software Component — Persistence — observed in 2 of 3 tracked threats
- [T1555](https://intel.threadlinqs.com/technique/T1555) Credentials from Password Stores — Credential Access — observed in 2 of 3 tracked threats
- [T1566.001](https://intel.threadlinqs.com/technique/T1566.001) Phishing: Spearphishing Attachment — Initial Access — observed in 2 of 3 tracked threats
- [T1566.002](https://intel.threadlinqs.com/technique/T1566.002) Spearphishing Link — Initial Access — observed in 2 of 3 tracked threats
- [T1583](https://intel.threadlinqs.com/technique/T1583) Acquire Infrastructure — Resource Development — observed in 2 of 3 tracked threats
- [T1005](https://intel.threadlinqs.com/technique/T1005) Data from Local System — Collection — observed in 1 of 3 tracked threats
- [T1014](https://intel.threadlinqs.com/technique/T1014) Rootkit — Stealth (formerly Defense Evasion) — observed in 1 of 3 tracked threats

## Tracked threats

- [AI-Enhanced Phishing and Adversary-in-the-Middle (AiTM) Phishing-as-a-Service Ecosystem — 2025-2026 Threat Landscape](https://intel.threadlinqs.com/threat/TL-2026-1879) — HIGH
- [ASEC June 2026 APT Trend Report: Nation-State Actors Pivot to Cloud/OAuth Abuse, MaaS, and Supply-Chain Compromise](https://intel.threadlinqs.com/threat/TL-2026-1287) — MEDIUM
- [GreyVibe — Russian-Aligned AI-Assisted Espionage vs Ukraine: LegionRelay/PhantomRelay PowerShell RATs & FallSpy Android Spyware (WithSecure)](https://intel.threadlinqs.com/threat/TL-2026-0622) — HIGH

## Related CVEs

1 CVE referenced by tracked GreyVibe activity.

- [CVE-2026-21509](https://intel.threadlinqs.com/cve/CVE-2026-21509)

## 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/GreyVibe