Group targeting healthcare and M&A advisory firms to steal insider trading information from corporate email accounts. This profile is mapped to MITRE ATT&CK G0085 and covers attribution, tooling, targeting, and defensive recommendations based on observed campaigns.
Overview & Attribution
FIN4 (also tracked as None publicly documented) is a threat group attributed to Unknown. The group primarily targets Healthcare, pharmaceutical, M&A advisory for intelligence collection and operational objectives aligned with state interests.
This group is tracked as G0085 in the MITRE ATT&CK framework. All techniques referenced in this report are mapped to ATT&CK for consistent threat modeling and detection engineering.
Arsenal & Tools
Known tools and malware associated with FIN4 include:
- Credential harvesting tools
Targeting & Operations
FIN4 operations focus on Healthcare, pharmaceutical, M&A advisory. The group typically gains initial access through spear-phishing, exploitation of public-facing applications, or strategic web compromises before deploying custom implants for persistent access and data exfiltration.
Organizations in the Healthcare sector should treat FIN4 as a relevant threat and validate their detection coverage against the MITRE ATT&CK techniques listed below.
MITRE ATT&CK Mapping
Key techniques observed in FIN4 operations:
| Technique ID | Technique Name | Tactical Context |
|---|---|---|
| T1566.001 | T1566.001 | Observed in FIN4 campaigns |
| T1056.001 | T1056.001 | Observed in FIN4 campaigns |
| T1114.002 | T1114.002 | Observed in FIN4 campaigns |
| T1078 | T1078 | Observed in FIN4 campaigns |
Full ATT&CK mapping: https://attack.mitre.org/groups/G0085/
Notable Campaigns
This threat group has been active in operations targeting Healthcare, pharmaceutical, M&A advisory. Security researchers have documented campaigns involving Credential harvesting tools and other tools deployed against organizations in multiple countries. Attribution confidence varies by campaign, but consistent infrastructure and TTP overlap links activity to Unknown-nexus operations.
Detection & Defense
Recommended defensive measures against FIN4:
- Network monitoring: Detect C2 beaconing patterns associated with Credential harvesting tools and related implants
- Endpoint detection: Deploy behavioral rules for the ATT&CK techniques above, particularly T1566.001 and T1056.001
- Email security: Implement robust phishing defenses including URL sandboxing and attachment detonation
- Patch management: Prioritize patching of internet-facing applications exploited by this group
- Threat hunting: Proactively hunt for IOCs and behavioral indicators mapped to G0085 in MITRE ATT&CK
How Mjolnir Security Can Help
Defend Against FIN4
Mjolnir Security provides tailored threat intelligence, detection engineering, and incident response services to help organizations defend against Unknown-nexus threat actors.
Contact us: mjolnirsecurity.com
Stay ahead of emerging threats. Get notified when we publish new intelligence reports and advisories.
Subscribe to Alerts