Threat Huntmediumtest
Curl.EXE Execution With Custom UserAgent
Detects execution of curl.exe with custom useragent options
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Hunting Hypothesis
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 Logic2 selectors
detection:
selection_curl:
- Image|endswith: '\curl.exe'
- Product: 'The curl executable'
selection_opt:
CommandLine|contains:
- ' -A '
- ' --user-agent '
condition: all of selection_*False Positives
Scripts created by developers and admins
Administrative activity
MITRE ATT&CK
Tactics
Sub-techniques
Other
detection.threat-hunting
Rule Metadata
Rule ID
3286d37a-00fd-41c2-a624-a672dcd34e60
Status
test
Level
medium
Type
Threat Hunt
Created
Sun Jan 23
Modified
Tue Feb 21
Author
Path
rules-threat-hunting/windows/process_creation/proc_creation_win_curl_useragent.yml
Raw Tags
attack.command-and-controlattack.t1071.001detection.threat-hunting