Detection rules › Sigma

HackTool - CreateMiniDump Execution

Status
test
Severity
high
Log source
category process_creation, product windows
Author
Florian Roth (Nextron Systems)
Source
github.com/SigmaHQ/sigma

Detects the use of CreateMiniDump hack tool used to dump the LSASS process memory for credential extraction on the attacker's machine

MITRE ATT&CK coverage

TacticTechniques
Credential Access

Telemetry coverage

ProviderRecord / event type
SysmonEvent ID 1: Process creation

Rule body

title: HackTool - CreateMiniDump Execution
id: 36d88494-1d43-4dc0-b3fa-35c8fea0ca9d
status: test
description: Detects the use of CreateMiniDump hack tool used to dump the LSASS process memory for credential extraction on the attacker's machine
references:
    - https://ired.team/offensive-security/credential-access-and-credential-dumping/dumping-lsass-passwords-without-mimikatz-minidumpwritedump-av-signature-bypass
author: Florian Roth (Nextron Systems)
date: 2019-12-22
modified: 2024-11-23
tags:
    - attack.credential-access
    - attack.t1003.001
logsource:
    category: process_creation
    product: windows
detection:
    selection:
        - Image|endswith: '\CreateMiniDump.exe'
        - Hashes|contains: 'IMPHASH=4a07f944a83e8a7c2525efa35dd30e2f'
    condition: selection
falsepositives:
    - Unknown
level: high

Stages and Predicates

Stage 0: condition

selection

Stage 1: selection

selection:
    - Image|endswith: '\CreateMiniDump.exe'
    - Hashes|contains: 'IMPHASH=4a07f944a83e8a7c2525efa35dd30e2f'

Indicators

These rows show field, operator, and value matches.

FieldKindValuesSearch
Hashesmatch
  • IMPHASH=4a07f944a83e8a7c2525efa35dd30e2f corpus 3 (sigma 3)
field:"Hashes" kind:match value:"IMPHASH=4a07f944a83e8a7c2525efa35dd30e2f"
Imageends_with
  • \CreateMiniDump.exe
field:"Image" kind:ends_with value:"\CreateMiniDump.exe"