Incident Score: Analysis & Impact (CISTHEFBI1774844752)

Rankiteo's analysis has identified several MITRE ATT&CK tactics and techniques associated with this incident, each with varying levels of confidence based on available evidence. Under the Initial Access tactic, the analysis identified Exploit Public-Facing Application (T1190) with lower confidence (40%), supported by evidence indicating precursor malware (e.g., Bumblebee, QakBot, or Cobalt Strike) and Valid Accounts (T1078) with moderate to high confidence (70%), supported by evidence indicating unauthorized Active Directory accounts, suspicious VPN logins. Under the Execution tactic, the analysis identified User Execution: Malicious File (T1204.002) with moderate confidence (60%), with evidence including ransomware binaries, and malware samples for analysis and Command and Scripting Interpreter (T1059) with moderate to high confidence (70%), supported by evidence indicating misuse of built-in Windows tools (e.g., vssadmin.exe, PsExec). Under the Persistence tactic, the analysis identified Account Manipulation (T1098) with moderate to high confidence (80%), with evidence including unauthorized Active Directory accounts, and rogue accounts or backdoors and Boot or Logon Autostart Execution (T1547) with moderate confidence (50%), supported by evidence indicating persistence mechanisms (e.g., rogue accounts, backdoors). Under the Privilege Escalation tactic, the analysis identified Valid Accounts (T1078) with moderate to high confidence (70%), supported by evidence indicating unauthorized Active Directory accounts, suspicious VPN logins and Exploitation for Privilege Escalation (T1068) with moderate confidence (50%), supported by evidence indicating precursor malware (e.g., Cobalt Strike). Under the Defense Evasion tactic, the analysis identified Indicator Removal (T1070) with moderate to high confidence (70%), supported by evidence indicating disable ransomware binaries and remove associated registry entries, Impair Defenses: Disable or Modify Tools (T1562.001) with moderate confidence (60%), supported by evidence indicating misuse of built-in Windows tools (e.g., vssadmin.exe), and Masquerading (T1036) with moderate confidence (50%), supported by evidence indicating precursor malware (e.g., Bumblebee, QakBot). Under the Credential Access tactic, the analysis identified OS Credential Dumping (T1003) with moderate to high confidence (70%), supported by evidence indicating credential theft requiring password resets and Credentials from Password Stores (T1555) with moderate confidence (60%), supported by evidence indicating unauthorized Active Directory accounts. Under the Discovery tactic, the analysis identified Account Discovery (T1087) with moderate to high confidence (70%), supported by evidence indicating threat hunting for unauthorized Active Directory accounts and Network Service Discovery (T1046) with moderate confidence (60%), supported by evidence indicating examine logs for precursor malware and data exfiltration. Under the Lateral Movement tactic, the analysis identified Remote Services (T1021) with moderate to high confidence (70%), with evidence including misuse of PsExec, and remote access disabled post-breach and Valid Accounts (T1078) with moderate to high confidence (80%), with evidence including suspicious VPN logins, and unauthorized Active Directory accounts. Under the Collection tactic, the analysis identified Data from Local System (T1005) with moderate to high confidence (70%), supported by evidence indicating capture system images, memory dumps, and malware samples and Automated Collection (T1119) with moderate confidence (60%), supported by evidence indicating threat hunting for signs of data exfiltration. Under the Command and Control tactic, the analysis identified Application Layer Protocol (T1071) with moderate confidence (60%), supported by evidence indicating precursor malware (e.g., Cobalt Strike) and Ingress Tool Transfer (T1105) with moderate confidence (50%), supported by evidence indicating malware samples for analysis. Under the Exfiltration tactic, the analysis identified Exfiltration Over C2 Channel (T1041) with moderate to high confidence (80%), supported by evidence indicating threat hunting for signs of data exfiltration and Exfiltration Over Web Service (T1567) with moderate confidence (50%), supported by evidence indicating possible data exfiltration. Under the Impact tactic, the analysis identified Data Encrypted for Impact (T1486) with high confidence (90%), with evidence including ransomware data encryption, and disable ransomware binaries and Inhibit System Recovery (T1490) with moderate to high confidence (70%), supported by evidence indicating misuse of vssadmin.exe to inhibit recovery. These correlations help security teams understand the attack chain and develop appropriate defensive measures based on the observed tactics and techniques.