57 lines
1.8 KiB
YAML
57 lines
1.8 KiB
YAML
title: Suspicious Eventlog Clear or Configuration Using Wevtutil
|
|
author: Ecco, Daniil Yugoslavskiy, oscd.community
|
|
date: 2019/09/26
|
|
description: Detects clearing or configuration of eventlogs using wevtutil, powershell
|
|
and wmic. Might be used by ransomwares during the attack (seen by NotPetya and
|
|
others).
|
|
detection:
|
|
SELECTION_1:
|
|
EventID: 1
|
|
SELECTION_10:
|
|
CommandLine: '*clear-log*'
|
|
SELECTION_11:
|
|
CommandLine: '* cl *'
|
|
SELECTION_12:
|
|
CommandLine: '*set-log*'
|
|
SELECTION_13:
|
|
CommandLine: '* sl *'
|
|
SELECTION_2:
|
|
Image: '*\powershell.exe'
|
|
SELECTION_3:
|
|
CommandLine: '*Clear-EventLog*'
|
|
SELECTION_4:
|
|
CommandLine: '*Remove-EventLog*'
|
|
SELECTION_5:
|
|
CommandLine: '*Limit-EventLog*'
|
|
SELECTION_6:
|
|
Image: '*\wmic.exe'
|
|
SELECTION_7:
|
|
CommandLine: '* ClearEventLog *'
|
|
SELECTION_8:
|
|
EventID: 1
|
|
SELECTION_9:
|
|
Image: '*\wevtutil.exe'
|
|
condition: (SELECTION_1 and (((SELECTION_2 and (SELECTION_3 or SELECTION_4 or
|
|
SELECTION_5)) or (SELECTION_6 and SELECTION_7)) or (SELECTION_8 and SELECTION_9
|
|
and (SELECTION_10 or SELECTION_11 or SELECTION_12 or SELECTION_13))))
|
|
falsepositives:
|
|
- Admin activity
|
|
- Scripts and administrative tools used in the monitored environment
|
|
id: cc36992a-4671-4f21-a91d-6c2b72a2edf5
|
|
level: high
|
|
logsource:
|
|
category: process_creation
|
|
product: windows
|
|
modified: 2019/11/11
|
|
references:
|
|
- https://github.com/redcanaryco/atomic-red-team/blob/master/atomics/T1070.001/T1070.001.md
|
|
- https://eqllib.readthedocs.io/en/latest/analytics/5b223758-07d6-4100-9e11-238cfdd0fe97.html
|
|
tags:
|
|
- attack.defense_evasion
|
|
- attack.t1070.001
|
|
- attack.t1070
|
|
- car.2016-04-002
|
|
yml_filename: win_susp_eventlog_clear.yml
|
|
yml_path: /Users/user/Documents/YamatoSecurity/sigma/rules/windows/process_creation
|
|
|