31-08-2026
Spring Ring: An Inside Look at Voice Phishing Campaigns in Microsoft Teams
https://unit42.paloaltonetworks.com/spring-ring-voice-phishing-campaigns/
Report completeness: High
Actors/Campaigns:
Spring_ring
Apt29
Threats:
Credential_harvesting_technique
Petitpotam_vuln
Microsoft_quick_assist_tool
Bloat_technique
Spear-phishing_technique
Victims:
Employees, Organizations across various industries
Industry:
Education
TTPs:
Tactics: 4
Technics: 5
IOCs:
Email: 17
Domain: 1
File: 1
IP: 16
Hash: 1
Url: 1
Soft:
Microsoft Teams, Microsoft Edge
Algorithms:
sha256
Functions:
Voice, Protocol
Languages:
python, powershell
Links:
https://github.com/topotam/PetitPotam