mirror of
https://github.com/splunk/security_content
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Eric McGinnis
63 lines
2.1 KiB
YAML
63 lines
2.1 KiB
YAML
name: Windows MSHTA Child Process
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id: f63f7e9c-9526-11ec-9fc7-acde48001122
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version: 6
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date: '2022-02-23'
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author: Michael Haag, Splunk
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status: production
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type: TTP
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description: The following analytic identifies child processes spawning from "mshta.exe".
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The search will return the first time and last time these command-line arguments
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were used for these executions, as well as the target system, the user, parent process
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"mshta.exe" and its child process.
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data_source:
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- Windows Security 4688
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search:
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selection1:
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process.file.name:
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- wscript.exe
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- cscript.exe
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- searchprotocolhost.exe
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- microsoft.workflow.compiler.exe
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- msbuild.exe
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- colorcpl.exe
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- scrcons.exe
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- cmd.exe
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- powershell.exe
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actor.process.file.name|endswith: mshta.exe
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condition: selection1
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how_to_implement: To successfully implement this search, you need to be ingesting
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logs with the process name, parent process, and command-line executions from your
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endpoints. If you are using Sysmon, you must have at least version 6.0.4 of the
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Sysmon TA.
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known_false_positives: Although unlikely, some legitimate applications may exhibit
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this behavior, triggering a false positive.
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references:
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- https://github.com/redcanaryco/AtomicTestHarnesses
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- https://redcanary.com/blog/introducing-atomictestharnesses/
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tags:
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analytic_story:
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- Suspicious MSHTA Activity
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- Living Off The Land
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asset_type: Endpoint
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confidence: 100
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impact: 80
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message: An instance of $parent_process_name$ spawning $process_name$ was identified
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on endpoint $dest_device_id$ by user $dest_user_id$ attempting to access a remote
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destination to download an additional payload.
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mitre_attack_id:
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- T1218.005
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- T1218
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observable: []
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product:
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- Splunk Behavioral Analytics
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required_fields: []
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kill_chain_phases:
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- Exploitation
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risk_score: 80
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security_domain: endpoint
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tests:
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- name: True Positive Test
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attack_data:
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- data: https://media.githubusercontent.com/media/splunk/attack_data/master/datasets/attack_techniques/T1218.005/atomic_red_team/windows-security.log
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source: WinEventLog:Security
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