Rewterz Threat Alert – Hive Ransomware – Active IOCs

Severity

High

Analysis Summary

Hive ransomware, which was first observed in June 2021 and likely operates as an affiliate-based ransomware, employs a wide variety of tactics, techniques, and procedures (TTPs), creating significant challenges for defense and mitigation. Hive ransomware uses multiple mechanisms to compromise business networks, including phishing emails with malicious attachments to gain access and Remote Desktop Protocol (RDP) to move laterally once on the network. After compromising a victim network, Hive ransomware actors exfiltrate data and encrypt files on the network. The actors leave a ransom note in each affected directory within a victim’s system, which provides instructions on how to purchase the decryption software. The ransom note also threatens to leak exfiltrated victim data on the Tor site, “HiveLeaks.”

Impact

• Unauthorized Access
• Data Exfiltration
• File Encryption

Indicators of Compromise

MD5

• b5045d802394f4560280a7404af69263
• 04FB3AE7F05C8BC333125972BA907398
• BEE9BA70F36FF250B31A6FDF7FA8AFEB

SHA-256

• 321d0c4f1bbb44c53cd02186107a18b7a44c840a9a5f0a78bdac06868136b72c

Remediation

• Block all threat indicators at your respective controls.
• Search for IOCs in your environment.