title: Suspect Svchost Memory Asccess
ruletype: Sigma
author: Tim Burrell
date: 2020/01/02
description: Detects suspect access to svchost process memory such as that used by
  Invoke-Phantom to kill the winRM windows event logging service.
detection:
  SELECTION_1:
    EventID: 10
  SELECTION_2:
    TargetImage: '*\WINDOWS\System32\svchost.exe'
  SELECTION_3:
    GrantedAccess: '0x1F3FFF'
  SELECTION_4:
    CallTrace: '*UNKNOWN*'
  condition: (SELECTION_1 and SELECTION_2 and SELECTION_3 and SELECTION_4)
falsepositives:
- unknown
id: 166e9c50-8cd9-44af-815d-d1f0c0e90dde
level: high
logsource:
  category: process_access
  product: windows
modified: 2021/10/21
references:
- https://github.com/hlldz/Invoke-Phant0m
- https://twitter.com/timbmsft/status/900724491076214784
status: experimental
tags:
- attack.defense_evasion
- attack.t1562.002
- attack.t1089