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Modification of Environment Variable via Launchctl
editModification of Environment Variable via Launchctl
editIdentifies modifications to an environment variable using the built-in launchctl command. Adversaries may execute their own malicious payloads by hijacking certain environment variables to load arbitrary libraries or bypass certain restrictions.
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
- Defense Evasion
Version: 100 (version history)
Added (Elastic Stack release): 7.12.0
Last modified (Elastic Stack release): 8.5.0
Rule authors: Elastic
Rule license: Elastic License v2
Rule query
editevent.category:process and event.type:start and
process.name:launchctl and process.args:(setenv and not (JAVA*_HOME
or RUNTIME_JAVA_HOME or
DBUS_LAUNCHD_SESSION_BUS_SOCKET or
ANT_HOME or LG_WEBOS_TV_SDK_HOME or
WEBOS_CLI_TV or EDEN_ENV)
) and not process.parent.executable:("/Applications/NoMachine.app/Co
ntents/Frameworks/bin/nxserver.bin" or
"/usr/local/bin/kr" or
"/Applications/NoMachine.app/Contents/Frameworks/bin/nxserver.bin" or
"/Applications/IntelliJ IDEA
CE.app/Contents/jbr/Contents/Home/lib/jspawnhelper") and not
process.args : "*.vmoptions"
Threat mapping
editFramework: MITRE ATT&CKTM
-
Tactic:
- Name: Defense Evasion
- ID: TA0005
- Reference URL: https://attack.mitre.org/tactics/TA0005/
-
Technique:
- Name: Hijack Execution Flow
- ID: T1574
- Reference URL: https://attack.mitre.org/techniques/T1574/
Rule version history
edit- Version 100 (8.5.0 release)
-
- Formatting only
- Version 4 (8.4.0 release)
-
-
Updated query, changed from:
event.category:process and event.type:start and process.name:launchctl and process.args:(setenv and not (JAVA*_HOME or RUNTIME_JAVA_HOME or DBUS_LAUNCHD_SESSION_BUS_SOCKET or ANT_HOME or LG_WEBOS_TV_SDK_HOME or WEBOS_CLI_TV or EDEN_ENV) ) and not process.parent.executable:("/Applications/NoMachine.app/Co ntents/Frameworks/bin/nxserver.bin" or "/usr/local/bin/kr" or "/Applications/NoMachine.app/Contents/Frameworks/bin/nxserver.bin" or "/Applications/IntelliJ IDEA CE.app/Contents/jbr/Contents/Home/lib/jspawnhelper")
-
- Version 2 (7.13.0 release)
-
-
Updated query, changed from:
event.category:process and event.type:start and process.name:launchctl and process.args:(setenv and not (JAVA*_HOME or RUNTIME_JAVA_HOME or DBUS_LAUNCHD_SESSION_BUS_SOCKET or ANT_HOME))
-