Incident Score: Analysis & Impact (KB-PRI1778473457)

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 moderate confidence (50%), supported by evidence indicating attack threatening the organizations existence; no specific vector disclosed and Valid Accounts (T1078) with moderate confidence (60%), supported by evidence indicating ransomware group M3rx rapidly expanded victim list; likely used stolen credentials. Under the Execution tactic, the analysis identified User Execution: Malicious File (T1204.002) with moderate to high confidence (70%), supported by evidence indicating pE32+ x64 Go-based ransomware sample with embedded configuration and Command and Scripting Interpreter: PowerShell (T1059.001) with moderate to high confidence (80%), supported by evidence indicating self-deletion via PowerShell post-encryption. Under the Persistence tactic, the analysis identified Valid Accounts (T1078) with moderate confidence (60%), supported by evidence indicating likely maintained access via compromised credentials. Under the Defense Evasion tactic, the analysis identified Indicator Removal: File Deletion (T1070.004) with high confidence (90%), supported by evidence indicating self-deletion via PowerShell; Recycle Bin clearing and Execution Guardrails: Environmental Keying (T1480.001) with moderate confidence (50%), supported by evidence indicating embedded configuration in ransomware sample. Under the Credential Access tactic, the analysis identified OS Credential Dumping (T1003) with moderate confidence (60%), supported by evidence indicating rapid expansion of victim list suggests credential theft. Under the Discovery tactic, the analysis identified File and Directory Discovery (T1083) with moderate to high confidence (80%), supported by evidence indicating 36,840 files totaling 140GB exfiltrated; invoices, sales data. Under the Collection tactic, the analysis identified Data from Local System (T1005) with high confidence (90%), supported by evidence indicating 36,840 files including invoices, sales data, sensitive documents. Under the Exfiltration tactic, the analysis identified Exfiltration Over C2 Channel (T1041) with high confidence (90%), supported by evidence indicating 140GB of data exfiltrated; leak post published by M3rx. Under the Impact tactic, the analysis identified Data Encrypted for Impact (T1486) with high confidence (90%), supported by evidence indicating files appended with .8hmlsewu extension; RECOVERY_NOTES.TXT ransom note and Inhibit System Recovery (T1490) with moderate to high confidence (70%), supported by evidence indicating recycle Bin clearing post-encryption. These correlations help security teams understand the attack chain and develop appropriate defensive measures based on the observed tactics and techniques.