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Elastic Docs ›Elastic Security Solution [8.10] ›Downloadable rule update v8.10.6

Potential Cookies Theft via Browser Debugging

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Potential Cookies Theft via Browser Debugging

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Identifies the execution of a Chromium based browser with the debugging process argument, which may indicate an attempt to steal authentication cookies. An adversary may steal web application or service session cookies and use them to gain access web applications or Internet services as an authenticated user without needing credentials.

Rule type: eql

Rule indices:

  • auditbeat-*
  • winlogbeat-*
  • logs-endpoint.events.*
  • logs-windows.*

Severity: medium

Risk score: 47

Runs every: 5m

Searches indices from: now-9m (Date Math format, see also Additional look-back time)

Maximum alerts per execution: 33

References:

Tags:

  • Domain: Endpoint
  • OS: Linux
  • OS: Windows
  • OS: macOS
  • Use Case: Threat Detection
  • Tactic: Credential Access
  • Data Source: Elastic Defend

Version: 104

Rule authors:

  • Elastic

Rule license: Elastic License v2

Rule query

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process where event.type in ("start", "process_started", "info") and
  process.name in (
             "Microsoft Edge",
             "chrome.exe",
             "Google Chrome",
             "google-chrome-stable",
             "google-chrome-beta",
             "google-chrome",
             "msedge.exe") and
   process.args : ("--remote-debugging-port=*",
                   "--remote-debugging-targets=*",
                   "--remote-debugging-pipe=*") and
   process.args : "--user-data-dir=*" and not process.args:"--remote-debugging-port=0"

Framework: MITRE ATT&CKTM

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