storm-0501

Storm-0501 is a ransomware group that targets hybrid IT environments, combining on-premises and cloud-based attacks. Recent operations show the group compromising on-premises systems, pivoting into Azure, exfiltrating and destroying cloud data, and delivering ransom demands via compromised Microsoft Teams accounts. The group relies on identity abuse, synchronization-service compromise, and cloud-native capabilities rather than traditional endpoint-first ransomware. This approach allows Storm-0501 to steal, encrypt, delete, and extort data without deploying malware on every host. Microsoft's threat intelligence has documented these evolving tactics, highlighting the group's focus on hybrid identity and cloud infrastructure vulnerabilities.