IMPORTANT: No additional bug fixes or documentation updates will be released for this version. For the latest information, see the current release documentation.
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Elastic Docs ›Elastic Security Solution [8.8] ›Detections and alerts ›Prebuilt rule reference

WebProxy Settings Modification

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WebProxy Settings Modification

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Identifies the use of the built-in networksetup command to configure webproxy settings. This may indicate an attempt to hijack web browser traffic for credential access via traffic sniffing or redirection.

Rule type: query

Rule indices:

  • logs-endpoint.events.*

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: 100

References:

Tags:

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

Version: 105

Rule authors:

  • Elastic

Rule license: Elastic License v2

Rule query

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event.category:process and host.os.type:macos and event.type:start and
 process.name : networksetup and process.args : (("-setwebproxy" or "-setsecurewebproxy" or "-setautoproxyurl") and not (Bluetooth or off)) and
 not process.parent.executable : ("/Library/PrivilegedHelperTools/com.80pct.FreedomHelper" or
                                  "/Applications/Fiddler Everywhere.app/Contents/Resources/app/out/WebServer/Fiddler.WebUi" or
                                  "/usr/libexec/xpcproxy")

Framework: MITRE ATT&CKTM

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