sigmamediumHunting

Uncommon Svchost Parent Process

Detects an uncommon svchost parent process

MITRE ATT&CK

defense-evasion

Detection Query

selection:
  Image|endswith: \svchost.exe
filter_main_generic:
  ParentImage|endswith:
    - \Mrt.exe
    - \MsMpEng.exe
    - \ngen.exe
    - \rpcnet.exe
    - \services.exe
    - \TiWorker.exe
filter_main_parent_null:
  ParentImage: null
filter_main_parent_empty:
  ParentImage:
    - "-"
    - ""
condition: selection and not 1 of filter_main_*

Author

Florian Roth (Nextron Systems)

Created

2017-08-15

Data Sources

windowsProcess Creation Events

Platforms

windows

References

Internal Research

Tags

attack.defense-evasionattack.t1036.005

Raw Content

title: Uncommon Svchost Parent Process
id: 01d2e2a1-5f09-44f7-9fc1-24faa7479b6d
status: test
description: Detects an uncommon svchost parent process
references:
    - Internal Research
author: Florian Roth (Nextron Systems)
date: 2017-08-15
modified: 2022-06-28
tags:
    - attack.defense-evasion
    - attack.t1036.005
logsource:
    category: process_creation
    product: windows
detection:
    selection:
        Image|endswith: '\svchost.exe'
    filter_main_generic:
        ParentImage|endswith:
            - '\Mrt.exe'
            - '\MsMpEng.exe'
            - '\ngen.exe'
            - '\rpcnet.exe'
            - '\services.exe'
            - '\TiWorker.exe'
    filter_main_parent_null:
        ParentImage: null
    filter_main_parent_empty:
        ParentImage:
            - '-'
            - ''
    condition: selection and not 1 of filter_main_*
falsepositives:
    - Unknown
level: medium