Windows Network Enumerationedit
Identifies attempts to enumerate hosts on a network using the built-in Windows net.exe tool.
Rule type: eql
Rule indices:
- logs-endpoint.events.*
- winlogbeat-*
- 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: 100
References: None
Tags:
- Elastic
- Host
- Windows
- Threat Detection
- Discovery
Version: 5
Rule authors:
- Elastic
Rule license: Elastic License v2
Investigation guideedit
## Config If enabling an EQL rule on a non-elastic-agent index (such as beats) for versions <8.2, events will not define `event.ingested` and default fallback for EQL rules was not added until 8.2, so you will need to add a custom pipeline to populate `event.ingested` to @timestamp for this rule to work.
Rule queryedit
process where event.type in ("start", "process_started") and
((process.name : "net.exe" or process.pe.original_file_name == "net.exe") or
((process.name : "net1.exe" or process.pe.original_file_name == "net1.exe") and
not process.parent.name : "net.exe")) and
(process.args : "view" or (process.args : "time" and process.args : "\\\\*"))
/* expand when ancestry is available
and not descendant of [process where event.type == ("start", "process_started") and process.name : "cmd.exe" and
((process.parent.name : "userinit.exe") or
(process.parent.name : "gpscript.exe") or
(process.parent.name : "explorer.exe" and
process.args : "C:\\*\\Start Menu\\Programs\\Startup\\*.bat*"))]
*/
Framework: MITRE ATT&CKTM
-
Tactic:
- Name: Discovery
- ID: TA0007
- Reference URL: https://attack.mitre.org/tactics/TA0007/
-
Technique:
- Name: Remote System Discovery
- ID: T1018
- Reference URL: https://attack.mitre.org/techniques/T1018/
-
Technique:
- Name: Network Share Discovery
- ID: T1135
- Reference URL: https://attack.mitre.org/techniques/T1135/