Emerging Threatcriticaltest
Rorschach Ransomware Execution Activity
Detects Rorschach ransomware execution activity
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X__Junior (Nextron Systems)Created Tue Apr 04Updated Sat Apr 220e9e6c63-1350-48c4-9fa1-7ccb235edc682023
Emerging Threat
Active Threat
Developed to detect an active or emerging threat. Prioritize investigation of any alerts and correlate with threat intelligence.
Log Source
WindowsProcess Creation
ProductWindows← raw: windows
CategoryProcess Creation← raw: process_creation
Events generated when a new process is spawned on the system. Covers command-line arguments, parent/child relationships, and process metadata.
Detection Logic
Detection Logic1 selector
detection:
selection:
Image|endswith:
- '\bcdedit.exe'
- '\net.exe'
- '\net1.exe'
- '\netsh.exe'
- '\wevtutil.exe'
- '\vssadmin.exe'
CommandLine|contains: '11111111'
condition: selectionFalse Positives
Unlikely
False positives are unlikely for most environments. High confidence detection.
References
MITRE ATT&CK
Sub-techniques
Other
detection.emerging-threats
Rule Metadata
Rule ID
0e9e6c63-1350-48c4-9fa1-7ccb235edc68
Status
test
Level
critical
Type
Emerging Threat
Created
Tue Apr 04
Modified
Sat Apr 22
Path
rules-emerging-threats/2023/Malware/Rorschach/proc_creation_win_malware_rorschach_ransomware_activity.yml
Raw Tags
attack.executionattack.t1059.003attack.t1059.001attack.defense-evasiondetection.emerging-threats