IMPORTANT: No additional bug fixes or documentation updates
will be released for this version. For the latest information, see the
current release documentation.
Unusual Process Network Connection
editUnusual Process Network Connection
editIdentifies network activity from unexpected system applications. This may indicate adversarial activity as these applications are often leveraged by adversaries to execute code and evade detection.
Rule type: eql
Rule indices:
- winlogbeat-*
- logs-endpoint.events.*
- logs-windows.*
Severity: low
Risk score: 21
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
- Defense Evasion
Version: 7 (version history)
Added (Elastic Stack release): 7.6.0
Last modified (Elastic Stack release): 7.12.0
Rule authors: Elastic
Rule license: Elastic License v2
Rule query
editsequence by process.entity_id [process where (process.name : "Microsoft.Workflow.Compiler.exe" or process.name : "bginfo.exe" or process.name : "cdb.exe" or process.name : "cmstp.exe" or process.name : "csi.exe" or process.name : "dnx.exe" or process.name : "fsi.exe" or process.name : "ieexec.exe" or process.name : "iexpress.exe" or process.name : "odbcconf.exe" or process.name : "rcsi.exe" or process.name : "xwizard.exe") and event.type == "start"] [network where (process.name : "Microsoft.Workflow.Compiler.exe" or process.name : "bginfo.exe" or process.name : "cdb.exe" or process.name : "cmstp.exe" or process.name : "csi.exe" or process.name : "dnx.exe" or process.name : "fsi.exe" or process.name : "ieexec.exe" or process.name : "iexpress.exe" or process.name : "odbcconf.exe" or process.name : "rcsi.exe" or process.name : "xwizard.exe")]
Threat mapping
editFramework: MITRE ATT&CKTM
-
Tactic:
- Name: Defense Evasion
- ID: TA0005
- Reference URL: https://attack.mitre.org/tactics/TA0005/
-
Technique:
- Name: Trusted Developer Utilities Proxy Execution
- ID: T1127
- Reference URL: https://attack.mitre.org/techniques/T1127/
Rule version history
edit- Version 7 (7.12.0 release)
-
- Formatting only
- Version 6 (7.11.0 release)
-
- Formatting only
- Version 5 (7.10.0 release)
-
-
Updated query, changed from:
event.category:network and event.type:connection and process.name:(Microsoft.Workflow.Compiler.exe or bginfo.exe or cdb.exe or cmstp.exe or csi.exe or dnx.exe or fsi.exe or ieexec.exe or iexpress.exe or odbcconf.exe or rcsi.exe or xwizard.exe)
-
- 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:(Microsoft.Workflow.Compiler.exe or bginfo.exe or cdb.exe or cmstp.exe or csi.exe or dnx.exe or fsi.exe or ieexec.exe or iexpress.exe or odbcconf.exe or rcsi.exe or xwizard.exe)
-
- Version 2 (7.7.0 release)
-
-
Updated query, changed from:
event.action:"Network connection detected (rule: NetworkConnect)" and process.name:(bginfo.exe or cdb.exe or cmstp.exe or csi.exe or dnx.exe or fsi.exe or ieexec.exe or iexpress.exe or Microsoft.Workflow.Compiler.exe or odbcconf.exe or rcsi.exe or xwizard.exe)
-