Detectionhightest
Chromium Browser Headless Execution To Mockbin Like Site
Detects the execution of a Chromium based browser process with the "headless" flag and a URL pointing to the mockbin.org service (which can be used to exfiltrate data).
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Launch
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 Logic3 selectors
detection:
selection_img:
Image|endswith:
- '\brave.exe'
- '\chrome.exe'
- '\msedge.exe'
- '\opera.exe'
- '\vivaldi.exe'
selection_headless:
CommandLine|contains: '--headless'
selection_url:
CommandLine|contains:
- '://run.mocky'
- '://mockbin'
condition: all of selection_*False Positives
Unknown
False positive likelihood has not been assessed. Additional context may be needed during triage.
References
MITRE ATT&CK
Tactics
Rule Metadata
Rule ID
1c526788-0abe-4713-862f-b520da5e5316
Status
test
Level
high
Type
Detection
Created
Mon Sep 11
Path
rules/windows/process_creation/proc_creation_win_browsers_chromium_mockbin_abuse.yml
Raw Tags
attack.execution