Detection rules › Elastic
Suspicious Electron Command Execution
Detects the use of specific commandline arguments that can be used with certain Electron based applications to covertly execute code for a variety of purposes.
MITRE ATT&CK coverage
| Tactic | Techniques |
|---|---|
| Execution |
Telemetry coverage
Rule body
[rule]
description = """
Detects the use of specific commandline arguments that can be used with certain Electron based applications to covertly
execute code for a variety of purposes.
"""
id = "1f1b8910-e6b3-4d9d-9bf0-7a7728f5bce6"
license = "Elastic License v2"
name = "Suspicious Electron Command Execution"
os_list = ["macos"]
reference = ["https://medium.com/@MalFuzzer/one-electron-to-rule-them-all-dc2e9b263daf"]
version = "1.0.11"
query = '''
sequence with maxspan=15s
[process where event.type == "start" and event.action == "exec" and
process.command_line like~ ("*--gpu-launcher=?*",
"*--utility-cmd-prefix=?*",
"*--browser-subprocess-path=?*",
"*--renderer-cmd-prefix=?*") and
not process.command_line like~ "*--browser-subprocess-path=/Users/*Chromium Helper*"] by process.entity_id
[process where event.type == "start" and event.action == "exec"] by process.parent.entity_id
'''
min_endpoint_version = "8.10.2"
optional_actions = []
[[actions]]
action = "kill_process"
field = "process.entity_id"
state = 0
[[actions]]
action = "kill_process"
field = "process.parent.entity_id"
state = 0
[[threat]]
framework = "MITRE ATT&CK"
[[threat.technique]]
id = "T1059"
name = "Command and Scripting Interpreter"
reference = "https://attack.mitre.org/techniques/T1059/"
[[threat.technique.subtechnique]]
id = "T1059.004"
name = "Unix Shell"
reference = "https://attack.mitre.org/techniques/T1059/004/"
[threat.tactic]
id = "TA0002"
name = "Execution"
reference = "https://attack.mitre.org/tactics/TA0002/"
[internal]
min_endpoint_version = "8.10.2"
Stages and Predicates
Ordered sequence: each step below must occur in order within 15s, correlated by process.entity_id, process.parent.entity_id.
Stage 1: process
[process where event.type == "start" and event.action == "exec" and
process.command_line like~ ("*--gpu-launcher=?*",
"*--utility-cmd-prefix=?*",
"*--browser-subprocess-path=?*",
"*--renderer-cmd-prefix=?*") and
not process.command_line like~ "*--browser-subprocess-path=/Users/*Chromium Helper*"] by process.entity_id
Stage 2: process
[process where event.type == "start" and event.action == "exec"] by process.parent.entity_id
Exclusions
The rule actively suppresses these predicates.
| Field | Kind | Excluded values | Search |
|---|---|---|---|
process.command_line | wildcard | *--browser-subprocess-path=/Users/*Chromium Helper* | excludes:process.command_line field:"process.command_line" value:"*--browser-subprocess-path=/Users/*Chromium Helper*" |
Indicators
These rows show field, operator, and value matches.
| Field | Kind | Values | Search |
|---|---|---|---|
event.action | eq |
| field:"EventType" kind:eq value:"exec" |
event.type | eq |
| field:"event.type" kind:eq value:"start" |
process.command_line | wildcard |
| field:"CommandLine" kind:wildcard |