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Threat Actors o-unc-066

Also known as: tracked as, ProfSvc, is a, O UNC 066, the Pink extortion gang, phones employees, services, other system resources, public key cryptography, one private, the file association, header, metamorphic, handler, Netshell, magic bytes, the IconEnvironmentDataBlock, mutating code

Description

Since April 2026, threat actors operating under O-UNC-066 have deployed a sophisticated vishing campaign targeting Microsoft 365 passkey enrollment. Attackers register domains containing 'passkey' and call victims to convince them to register new passkeys. Victims are directed to operator-controlled phishing kits that mimic Microsoft's enrollment process while attackers simultaneously register their own passkeys in victim accounts. The kit uses real-time polling and adapts to various MFA requirements including TOTP, push notifications, and SMS OTP. Targeted organizations span food and beverage, technology, healthcare, automotive, construction, and aviation industries. The campaign leverages Microsoft's legitimate passkey registration campaigns as a pretext, with primary motivation being data extortion through the Pink data leak site. Infrastructure is hosted on DDoS-Guard and IQWeb FZ-LLC.

Goals & Targeting

Targeted Sectors

Healthcare
Construction
Aerospace
Information technology
Media
Defense
Financial services
Critical infrastructure
Education
Government

Targeted Countries / Regions

JP

AI Analysis

No AI analysis yet.

ATT&CK Techniques

Exfiltration
1 technique
Initial Access
1 technique
Privilege Escalation
1 technique
Reconnaissance
1 technique

Campaigns / Victims

No campaigns linked yet.

Observed Data

No observed data linked yet.

References

  1. attack.mitre.org — Cited by web research for: services
  2. attack.mitre.org — Cited by web research for: PowerShell
  3. ctid.mitre.org — Cited by web research for: GitHub

Intel Summary

40

Techniques

45

Tools

0

Campaigns

42

IOCs

0

Observed Data

13

Tactics

Tags

Ransomware
APT
Healthcare Targeting
Phishing
DDoS

Details

Type
Nation-State
Primary Motivation
Ideology
Confidence
55%
Added
Jul 21, 2026
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