IMPORTANT: No additional bug fixes or documentation updates
will be released for this version. For the latest information, see the
current release documentation.
Windows System Network Connections Discovery
editWindows System Network Connections Discovery
editThis rule identifies the execution of commands that can be used to enumerate network connections. Adversaries may attempt to get a listing of network connections to or from a compromised system to identify targets within an environment.
Rule type: eql
Rule indices:
- logs-endpoint.events.process-*
Severity: low
Risk score: 21
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:
- Domain: Endpoint
- OS: Windows
- Use Case: Threat Detection
- Tactic: Discovery
- Rule Type: BBR
- Data Source: Elastic Defend
Version: 4
Rule authors:
- Elastic
Rule license: Elastic License v2
Rule query
editprocess where event.type == "start" and
(
process.name : "netstat.exe" or
(
(
(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 : ("use", "user", "session", "config") and not process.args: ("/persistent:*", "/delete", "\\\\*")
) or
(process.name : "nbtstat.exe" and process.args : "-s*")
) and not user.id : "S-1-5-18"
Framework: MITRE ATT&CKTM
-
Tactic:
- Name: Discovery
- ID: TA0007
- Reference URL: https://attack.mitre.org/tactics/TA0007/
-
Technique:
- Name: System Network Connections Discovery
- ID: T1049
- Reference URL: https://attack.mitre.org/techniques/T1049/
-
Technique:
- Name: System Information Discovery
- ID: T1082
- Reference URL: https://attack.mitre.org/techniques/T1082/