Emerging Threathightest
CVE-2023-22518 Exploitation Attempt - Suspicious Confluence Child Process (Linux)
Detects exploitation attempt of CVE-2023-22518 (Confluence Data Center / Confluence Server), where an attacker can exploit vulnerable endpoints to e.g. create admin accounts and execute arbitrary commands.
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 Logic3 selectors
detection:
selection_parent:
ParentImage|endswith: '/java'
ParentCommandLine|contains: 'confluence'
selection_child:
# Only children associated with known campaigns
Image|endswith:
- '/bash'
- '/curl'
- '/echo'
- '/wget'
filter_main_ulimit:
CommandLine|contains: 'ulimit -u'
condition: all of selection_* and not 1 of filter_main_*False Positives
Unlikely
False positives are unlikely for most environments. High confidence detection.
MITRE ATT&CK
Other
cve.2023-22518detection.emerging-threats
Rule Metadata
Rule ID
f8987c03-4290-4c96-870f-55e75ee377f4
Status
test
Level
high
Type
Emerging Threat
Created
Tue Nov 14
Path
rules-emerging-threats/2023/Exploits/CVE-2023-22518/proc_creation_lnx_exploit_cve_2023_22518_confluence_java_child_proc.yml
Raw Tags
attack.executionattack.t1059attack.initial-accessattack.t1190cve.2023-22518detection.emerging-threats