sigmahighHunting

LSASS Memory Access by Tool With Dump Keyword In Name

Detects LSASS process access requests from a source process with the "dump" keyword in its image name.

MITRE ATT&CK

credential-access

Detection Query

selection:
  TargetImage|endswith: \lsass.exe
  SourceImage|contains: dump
  GrantedAccess|endswith:
    - "10"
    - "30"
    - "50"
    - "70"
    - "90"
    - B0
    - D0
    - F0
    - "18"
    - "38"
    - "58"
    - "78"
    - "98"
    - B8
    - D8
    - F8
    - 1A
    - 3A
    - 5A
    - 7A
    - 9A
    - BA
    - DA
    - FA
    - "0x14C2"
    - FF
condition: selection

Author

Florian Roth (Nextron Systems)

Created

2022-02-10

Data Sources

windowsProcess Access Events

Platforms

windows

References

Tags

attack.credential-accessattack.t1003.001attack.s0002

Raw Content

title: LSASS Memory Access by Tool With Dump Keyword In Name
id: 9bd012ee-0dff-44d7-84a0-aa698cfd87a3
status: test
description: Detects LSASS process access requests from a source process with the "dump" keyword in its image name.
references:
    - https://twitter.com/_xpn_/status/1491557187168178176
    - https://www.ired.team/offensive-security/credential-access-and-credential-dumping/dump-credentials-from-lsass-process-without-mimikatz
author: Florian Roth (Nextron Systems)
date: 2022-02-10
modified: 2023-11-29
tags:
    - attack.credential-access
    - attack.t1003.001
    - attack.s0002
logsource:
    category: process_access
    product: windows
detection:
    selection:
        TargetImage|endswith: '\lsass.exe'
        SourceImage|contains: 'dump'
        GrantedAccess|endswith:
            - '10'
            - '30'
            - '50'
            - '70'
            - '90'
            - 'B0'
            - 'D0'
            - 'F0'
            - '18'
            - '38'
            - '58'
            - '78'
            - '98'
            - 'B8'
            - 'D8'
            - 'F8'
            - '1A'
            - '3A'
            - '5A'
            - '7A'
            - '9A'
            - 'BA'
            - 'DA'
            - 'FA'
            - '0x14C2'  # https://github.com/b4rtik/ATPMiniDump/blob/76304f93b390af3bb66e4f451ca16562a479bdc9/ATPMiniDump/ATPMiniDump.c
            - 'FF'
    condition: selection
falsepositives:
    - Rare programs that contain the word dump in their name and access lsass
level: high