sigmahighHunting

Tasks Folder Evasion

The Tasks folder in system32 and syswow64 are globally writable paths. Adversaries can take advantage of this and load or influence any script hosts or ANY .NET Application in Tasks to load and execute a custom assembly into cscript, wscript, regsvr32, mshta, eventvwr

MITRE ATT&CK

T1574.001

privilege-escalationdefense-evasionpersistenceexecution

Detection Query

selection1:
  CommandLine|contains:
    - "echo "
    - "copy "
    - "type "
    - file createnew
selection2:
  CommandLine|contains:
    - " C:\\Windows\\System32\\Tasks\\"
    - " C:\\Windows\\SysWow64\\Tasks\\"
condition: all of selection*

Author

Sreeman

Created

2020-01-13

Data Sources

windowsProcess Creation Events

Platforms

windows

References

Tags

attack.privilege-escalationattack.defense-evasionattack.persistenceattack.executionattack.t1574.001

Raw Content

title: Tasks Folder Evasion
id: cc4e02ba-9c06-48e2-b09e-2500cace9ae0
status: test
description: |
    The Tasks folder in system32 and syswow64 are globally writable paths.
    Adversaries can take advantage of this and load or influence any script hosts or ANY .NET Application
    in Tasks to load and execute a custom assembly into cscript, wscript, regsvr32, mshta, eventvwr
references:
    - https://twitter.com/subTee/status/1216465628946563073
    - https://gist.github.com/am0nsec/8378da08f848424e4ab0cc5b317fdd26
author: Sreeman
date: 2020-01-13
modified: 2022-12-25
tags:
    - attack.privilege-escalation
    - attack.defense-evasion
    - attack.persistence
    - attack.execution
    - attack.t1574.001
logsource:
    product: windows
    category: process_creation
detection:
    selection1:
        CommandLine|contains:
            - 'echo '
            - 'copy '
            - 'type '
            - 'file createnew'
    selection2:
        CommandLine|contains:
            - ' C:\Windows\System32\Tasks\'
            - ' C:\Windows\SysWow64\Tasks\'
    condition: all of selection*
falsepositives:
    - Unknown
level: high