Emerging Threathighexperimental
Potential Exploitation of CrushFTP RCE Vulnerability (CVE-2025-54309)
Detects suspicious child processes created by CrushFTP. It could be an indication of exploitation of a RCE vulnerability such as CVE-2025-54309.
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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
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 Logic4 selectors
detection:
selection_parent:
ParentImage|endswith: '\crushftp.exe'
selection_child_powershell:
Image|endswith:
- '\powershell.exe'
- '\powershell_ise.exe'
- '\pwsh.exe'
CommandLine|contains|all:
- 'IEX'
- 'enc'
- 'Hidden'
- 'bypass'
selection_child_cmd:
Image|endswith: '\cmd.exe'
CommandLine|contains:
- '/c powershell'
- 'whoami'
- 'net.exe'
- 'net1.exe'
selection_child_others:
Image|endswith:
- '\bitsadmin.exe'
- '\certutil.exe'
- '\mshta.exe'
- '\cscript.exe'
- '\wscript.exe'
condition: selection_parent and 1 of selection_child_*False Positives
Legitimate administrative command execution
MITRE ATT&CK
Sub-techniques
Other
cve.2025-54309detection.emerging-threats
Rule Metadata
Rule ID
0fdc7c7f-c690-4217-9ae3-31f5156eed72
Status
experimental
Level
high
Type
Emerging Threat
Created
Fri Aug 01
Author
Path
rules-emerging-threats/2025/Exploits/CVE-2025-54309/proc_creation_win_exploit_cve_2025_54309.yml
Raw Tags
attack.privilege-escalationattack.initial-accessattack.executionattack.t1059.001attack.t1059.003attack.t1068attack.t1190cve.2025-54309detection.emerging-threats