IMPORTANT: No additional bug fixes or documentation updates
will be released for this version. For the latest information, see the
current release documentation.
WebProxy Settings Modification
editWebProxy Settings Modification
editIdentifies 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:
- auditbeat-*
- logs-endpoint.events.*
Severity: medium
Risk score: 47
Runs every: 5 minutes
Searches indices from: now-9m (Date Math format, see also Additional look-back time)
Maximum alerts per execution: 100
References:
Tags:
- Elastic
- Host
- macOS
- Threat Detection
- Credential Access
Version: 3 (version history)
Added (Elastic Stack release): 7.12.0
Last modified (Elastic Stack release): 8.4.0
Rule authors: Elastic
Rule license: Elastic License v2
Potential false positives
editLegitimate WebProxy Settings Modification
Rule query
editevent.category : process 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")
Threat mapping
editFramework: MITRE ATT&CKTM
-
Tactic:
- Name: Credential Access
- ID: TA0006
- Reference URL: https://attack.mitre.org/tactics/TA0006/
-
Technique:
- Name: Steal Web Session Cookie
- ID: T1539
- Reference URL: https://attack.mitre.org/techniques/T1539/
Rule version history
edit- Version 3 (8.4.0 release)
-
- Formatting only
- Version 2 (7.13.0 release)
-
-
Updated query, changed from:
event.category:process and event.type:start and process.name:networksetup and process.args:("-setwebproxy" or "-setsecurewebproxy" or "-setautoproxyurl")
-