Major cybercrime group distributing Dridex, Locky, Clop ransomware, and FlawedAmmyy at massive scale via Necurs botnet. This profile is mapped to MITRE ATT&CK G0092 and covers attribution, tooling, targeting, and defensive recommendations based on observed campaigns.
Overview & Attribution
TA505 (also tracked as Hive0065, Spandex Tempest) is a threat group attributed to Eastern Europe. The group primarily targets Global, financial, retail, healthcare for intelligence collection and operational objectives aligned with state interests.
This group is tracked as G0092 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 TA505 include:
- Clop
- FlawedAmmyy
- FlawedGrace
- Get2
- SDBbot
Targeting & Operations
TA505 operations focus on Global, financial, retail, healthcare. 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 Global sector should treat TA505 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 TA505 operations:
| Technique ID | Technique Name | Tactical Context |
|---|---|---|
| T1566.001 | T1566.001 | Observed in TA505 campaigns |
| T1059.001 | T1059.001 | Observed in TA505 campaigns |
| T1486 | T1486 | Observed in TA505 campaigns |
| T1071.001 | T1071.001 | Observed in TA505 campaigns |
Full ATT&CK mapping: https://attack.mitre.org/groups/G0092/
Notable Campaigns
This threat group has been active in operations targeting Global, financial, retail, healthcare. Security researchers have documented campaigns involving Clop and other tools deployed against organizations in multiple countries. Attribution confidence varies by campaign, but consistent infrastructure and TTP overlap links activity to Eastern Europe-nexus operations.
Detection & Defense
Recommended defensive measures against TA505:
- Network monitoring: Detect C2 beaconing patterns associated with Clop and related implants
- Endpoint detection: Deploy behavioral rules for the ATT&CK techniques above, particularly T1566.001 and T1059.001
- 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 G0092 in MITRE ATT&CK
How Mjolnir Security Can Help
Defend Against TA505
Mjolnir Security provides tailored threat intelligence, detection engineering, and incident response services to help organizations defend against Eastern Europe-nexus threat actors.
Contact us: mjolnirsecurity.com
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