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2025-04-22 ⋅ Volexity ⋅ Charlie Gardner, Josh Duke, Matthew Meltzer, Sean Koessel, Steven Adair, Tom Lancaster
Phishing for Codes: Russian Threat Actors Target Microsoft 365 OAuth Workflows
UTA0352 UTA0355
2025-04-08 ⋅ Microsoft ⋅ Microsoft Threat Intelligence
Exploitation of CLFS zero-day leads to ransomware activity
RansomEXX Storm-2460
2025-04-03 ⋅ Microsoft ⋅ Microsoft Threat Intelligence
Threat actors leverage tax season to deploy tax-themed phishing campaigns
Brute Ratel C4 CloudEyE Latrodectus Remcos Storm-0249
2025-03-17 ⋅ Microsoft ⋅ Microsoft Incident Response
StilachiRAT analysis: From system reconnaissance to cryptocurrency theft
StilachiRAT
2025-03-06 ⋅ Twitter (@MsftSecIntel) ⋅ Microsoft Threat Intelligence
Tweet about Moonstone Sleet dropping Qilin ransomware
Qilin
2025-03-05 ⋅ Microsoft ⋅ Microsoft Threat Intelligence
Silk Typhoon targeting IT supply chain
2025-02-27 ⋅ Microsoft ⋅ Steven Masada
Disrupting a global cybercrime network abusing generative AI
Storm-2139
2025-02-13 ⋅ Microsoft ⋅ Microsoft Threat Intelligence
Storm-2372 conducts device code phishing campaign
Storm-2372
2025-02-13 ⋅ Volexity ⋅ Charlie Gardner, Steven Adair, Tom Lancaster
Multiple Russian Threat Actors Targeting Microsoft Device Code Authentication
2025-02-12 ⋅ Microsoft ⋅ Microsoft Threat Intelligence
The BadPilot campaign: Seashell Blizzard subgroup conducts multiyear global access operation
LocalOlive
2025-02-11 ⋅ EclecticIQ ⋅ Arda Büyükkaya
Sandworm APT Targets Ukrainian Users with Trojanized Microsoft KMS Activation Tools in Cyber Espionage Campaigns
Kalambur BACKORDER DCRat
2025-02-11 ⋅ Twitter (@MsftSecIntel) ⋅ Microsoft Threat Intelligence
Twitter Thread on a new Kimsuky tactic inciting admins to paste powershell
2025-02-06 ⋅ Microsoft ⋅ Microsoft Threat Intelligence
Code injection attacks using publicly disclosed ASP.NET machine keys
2025-01-31 ⋅ ConnectWise ⋅ Blake Eakin
Attackers Leveraging Microsoft Teams Defaults and Quick Assist for Social Engineering Attacks
Black Basta Black Basta ReedBed
2025-01-25 ⋅ Sophos ⋅ Anthony Bradshaw, Colin Cowie, Daniel Souter, Hunter Neal, Mark Parsons, Sean Baird, Sean Gallagher
Sophos MDR tracks two ransomware campaigns using “email bombing,” Microsoft Teams “vishing”
ReedBed STAC5143 UNC4393
2025-01-21 ⋅ Twitter (@MsftSecIntel) ⋅ Microsoft Threat Intelligence
Twitter Thread describing spotting of ReedBed in a Storm-1811 campaign
ReedBed UNC4393
2025-01-16 ⋅ Microsoft ⋅ Microsoft Threat Intelligence
New Star Blizzard spear-phishing campaign targets WhatsApp accounts
2024-12-11 ⋅ Microsoft ⋅ Microsoft Threat Intelligence
Frequent freeloader part II: Russian actor Secret Blizzard using tools of other groups to attack Ukraine
Amadey Kazuar Wipbot FlyingYeti
2024-12-04 ⋅ Microsoft ⋅ Microsoft Threat Intelligence
Frequent freeloader part I: Secret Blizzard compromising Storm-0156 infrastructure for espionage
Crimson RAT MiniPocket TwoDash Wainscot Operation C-Major Storm-0473
2024-12-02 ⋅ TechSpot ⋅ Alfonso Maruccia
Hacking group claims to have cracked Microsoft's software licensing security on a massive scale
Massgrave