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MsXsl Making Network Connections

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MsXsl Making Network Connections

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Identifies MsXsl.exe making outbound network connections. This may indicate adversarial activity as MsXsl is often leveraged by adversaries to execute malicious scripts and evade detection.

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:

Domain: Endpoint
OS: Windows
Use Case: Threat Detection
Tactic: Defense Evasion

Version: 1

Rule authors:

Elastic

Rule license: Elastic License v2

Rule query

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/* duplicate of Network Connection via MsXsl - b86afe07-0d98-4738-b15d-8d7465f95ff5 */

sequence by process.entity_id
  [process where host.os.type == "windows" and event.type == "start" and process.name : "msxsl.exe"]
  [network where host.os.type == "windows" and process.name : "msxsl.exe" and network.direction : ("outgoing", "egress")]

Framework: MITRE ATT&CK^TM

Tactic:
- Name: Defense Evasion
- ID: TA0005
- Reference URL: https://attack.mitre.org/tactics/TA0005/
Technique:
- Name: XSL Script Processing
- ID: T1220
- Reference URL: https://attack.mitre.org/techniques/T1220/

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