IMPORTANT: No additional bug fixes or documentation updates
will be released for this version. For the latest information, see the
current release documentation.
MsBuild Making Network Connections
editMsBuild Making Network Connections
editIdentifies MsBuild.exe
making outbound network connections. This may indicate
adversarial activity as MsBuild is often leveraged by adversaries to execute
code and evade detection.
Rule type: eql
Rule indices:
- winlogbeat-*
- 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
Tags:
- Elastic
- Host
- Windows
- Threat Detection
- Execution
Version: 5 (version history)
Added (Elastic Stack release): 7.6.0
Last modified (Elastic Stack release): 7.10.0
Rule authors: Elastic
Rule license: Elastic License
Rule query
editsequence by process.entity_id [process where process.name : "MSBuild.exe" and event.type == "start"] [network where process.name : "MSBuild.exe" and not cidrmatch(destination.ip, "127.0.0.1", "::1")]
Threat mapping
editFramework: MITRE ATT&CKTM
-
Tactic:
- Name: Execution
- ID: TA0002
- Reference URL: https://attack.mitre.org/tactics/TA0002/
-
Technique:
- Name: Trusted Developer Utilities Proxy Execution
- ID: T1127
- Reference URL: https://attack.mitre.org/techniques/T1127/
Rule version history
edit- Version 5 (7.10.0 release)
-
-
Updated query, changed from:
event.category:network and event.type:connection and process.name:MSBuild.exe and not destination.ip:(127.0.0.1 or "::1")
-
- Version 4 (7.9.1 release)
-
- Formatting only
- Version 3 (7.9.0 release)
-
-
Updated query, changed from:
event.action:"Network connection detected (rule: NetworkConnect)" and process.name:MSBuild.exe and not destination.ip:(127.0.0.1 or "::1")
-
- Version 2 (7.7.0 release)
-
-
Updated query, changed from:
event.action:"Network connection detected (rule: NetworkConnect)" and process.name:MSBuild.exe and not destination.ip:("127.0.0.1" or "::1")
-