Emerging Threatcriticaltest
UNC4841 - Potential SEASPY Execution
Detects execution of specific named binaries which were used by UNC4841 to deploy their SEASPY backdoor
Convert In Phoenix Studio
Open this Sigma rule in the converter with the YAML preloaded and ready for backend selection.
Launch
Emerging Threat
Active Threat
Developed to detect an active or emerging threat. Prioritize investigation of any alerts and correlate with threat intelligence.
Log Source
LinuxProcess Creation
ProductLinux← raw: linux
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:
- '/BarracudaMailService'
- '/resize2fstab'
- '/resize_reisertab'
condition: selectionFalse Positives
Unlikely
False positives are unlikely for most environments. High confidence detection.
References
MITRE ATT&CK
Tactics
Other
detection.emerging-threats
Rule Metadata
Rule ID
f6a711f3-d032-4f9e-890b-bbe776236c84
Status
test
Level
critical
Type
Emerging Threat
Created
Fri Jun 16
Path
rules-emerging-threats/2023/TA/UNC4841-Barracuda-ESG-Zero-Day-Exploitation/proc_creation_lnx_atp_unc4841_seaspy_execution.yml
Raw Tags
attack.executiondetection.emerging-threats