Potential BearLPE Exploitation

Detects potential exploitation of the BearLPE exploit using Task Scheduler ".job" import arbitrary DACL write\par

title: Potential BearLPE Exploitation
id: 931b6802-d6a6-4267-9ffa-526f57f22aaf
status: test
description: Detects potential exploitation of the BearLPE exploit using Task Scheduler ".job" import arbitrary DACL write\par
references:
    - https://github.com/djhohnstein/polarbearrepo/blob/f26d3e008093cc5c835e92a7165170baf6713d43/bearlpe/polarbear/polarbear/exploit.cpp
author: Olaf Hartong
date: 2019-05-22
modified: 2023-01-26
tags:
    - attack.persistence
    - attack.execution
    - attack.privilege-escalation
    - attack.t1053.005
    - car.2013-08-001
    - detection.emerging-threats
logsource:
    category: process_creation
    product: windows
detection:
    selection_img:
        - Image|endswith: '\schtasks.exe'
        - OriginalFileName: 'schtasks.exe'
    selection_cli:
        CommandLine|contains|all:
            - '/change'
            - '/TN'
            - '/RU'
            - '/RP'
    condition: all of selection*
falsepositives:
    - Unknown
level: high

• T1053.005Scheduled Task

• https://github.com/djhohnstein/polarbearrepo/blob/f26d3e008093cc5c835e92a7165170baf6713d43/bearlpe/polarbear/polarbear/exploit.cpp↗