Financially motivated group abusing Microsoft Quick Assist remote support tool for social engineering to deploy Black Basta ransomware. This profile is mapped to MITRE ATT&CK G1046 and covers attribution, tooling, targeting, and defensive recommendations based on observed campaigns.
Overview & Attribution
Storm-1811 (also tracked as None publicly documented) is a threat group attributed to Unknown. The group primarily targets Organizations using Microsoft Quick Assist for intelligence collection and operational objectives aligned with state interests.
This group is tracked as G1046 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 Storm-1811 include:
- Black Basta
- QakBot
- Cobalt Strike
Targeting & Operations
Storm-1811 operations focus on Organizations using Microsoft Quick Assist. 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 Organizations using Microsoft Quick Assist sector should treat Storm-1811 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 Storm-1811 operations:
| Technique ID | Technique Name | Tactical Context |
|---|---|---|
| T1219 | T1219 | Observed in Storm-1811 campaigns |
| T1566.003 | T1566.003 | Observed in Storm-1811 campaigns |
| T1486 | T1486 | Observed in Storm-1811 campaigns |
| T1059.001 | T1059.001 | Observed in Storm-1811 campaigns |
Full ATT&CK mapping: https://attack.mitre.org/groups/G1046/
Notable Campaigns
This threat group has been active in operations targeting Organizations using Microsoft Quick Assist. Security researchers have documented campaigns involving Black Basta 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 Storm-1811:
- Network monitoring: Detect C2 beaconing patterns associated with Black Basta and related implants
- Endpoint detection: Deploy behavioral rules for the ATT&CK techniques above, particularly T1219 and T1566.003
- 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 G1046 in MITRE ATT&CK
How Mjolnir Security Can Help
Defend Against Storm-1811
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
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