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LSASS Process Memory Dump Creation Via Taskmgr.EXE

Detects the creation of an "lsass.dmp" file by the taskmgr process. This indicates a manual dumping of the LSASS.exe process memory using Windows Task Manager.

MITRE ATT&CK

T1003.001

credential-access

Detection Query

selection:
  Image|endswith:
    - :\Windows\system32\taskmgr.exe
    - :\Windows\SysWOW64\taskmgr.exe
  TargetFilename|contains|all:
    - \AppData\Local\Temp\
    - \lsass
    - .DMP
condition: selection

Author

Swachchhanda Shrawan Poudel

Created

2023-10-19

Data Sources

windowsFile Events

Platforms

windows

References

https://github.com/redcanaryco/atomic-red-team/blob/987e3ca988ae3cff4b9f6e388c139c05bf44bbb8/atomics/T1003.001/T1003.001.md#L1

Tags

attack.credential-accessattack.t1003.001

Raw Content

title: LSASS Process Memory Dump Creation Via Taskmgr.EXE
id: 69ca12af-119d-44ed-b50f-a47af0ebc364
status: test
description: Detects the creation of an "lsass.dmp" file by the taskmgr process. This indicates a manual dumping of the LSASS.exe process memory using Windows Task Manager.
author: Swachchhanda Shrawan Poudel
date: 2023-10-19
references:
    - https://github.com/redcanaryco/atomic-red-team/blob/987e3ca988ae3cff4b9f6e388c139c05bf44bbb8/atomics/T1003.001/T1003.001.md#L1
tags:
    - attack.credential-access
    - attack.t1003.001
logsource:
    category: file_event
    product: windows
detection:
    selection:
        Image|endswith:
            - ':\Windows\system32\taskmgr.exe'
            - ':\Windows\SysWOW64\taskmgr.exe'
        TargetFilename|contains|all:
            - '\AppData\Local\Temp\'
            - '\lsass'
            - '.DMP'
    condition: selection
falsepositives:
    - Rare case of troubleshooting by an administrator or support that has to be investigated regardless
level: high
regression_tests_path: regression_data/rules/windows/file/file_event/file_event_win_taskmgr_lsass_dump/info.yml