42 lines
1.3 KiB
YAML
42 lines
1.3 KiB
YAML
title: Sysmon Channel Reference Deletion
|
|
author: Roberto Rodriguez (Cyb3rWard0g), OTR (Open Threat Research)
|
|
date: 2020/07/14
|
|
description: Potential threat actor tampering with Sysmon manifest and eventually
|
|
disabling it
|
|
detection:
|
|
SELECTION_1:
|
|
ObjectName: '*WINEVT\Publishers\{5770385f-c22a-43e0-bf4c-06f5698ffbd9}*'
|
|
SELECTION_2:
|
|
ObjectName: '*WINEVT\Channels\Microsoft-Windows-Sysmon/Operational*'
|
|
SELECTION_3:
|
|
EventID: 4657
|
|
SELECTION_4:
|
|
ObjectValueName: Enabled
|
|
SELECTION_5:
|
|
NewValue: '0'
|
|
SELECTION_6:
|
|
EventID: 4663
|
|
SELECTION_7:
|
|
AccessMask: 65536
|
|
condition: ((SELECTION_1 or SELECTION_2) and ((SELECTION_3 and SELECTION_4 and
|
|
SELECTION_5) or (SELECTION_6 and SELECTION_7)))
|
|
falsepositives:
|
|
- unknown
|
|
id: 18beca67-ab3e-4ee3-ba7a-a46ca8d7d0cc
|
|
level: critical
|
|
logsource:
|
|
product: windows
|
|
service: security
|
|
references:
|
|
- https://twitter.com/Flangvik/status/1283054508084473861
|
|
- https://twitter.com/SecurityJosh/status/1283027365770276866
|
|
- https://securityjosh.github.io/2020/04/23/Mute-Sysmon.html
|
|
- https://gist.github.com/Cyb3rWard0g/cf08c38c61f7e46e8404b38201ca01c8
|
|
status: experimental
|
|
tags:
|
|
- attack.defense_evasion
|
|
- attack.t1112
|
|
yml_filename: win_sysmon_channel_reference_deletion.yml
|
|
yml_path: /Users/user/Documents/YamatoSecurity/sigma/rules/windows/builtin
|
|
|