Windows HackTool: Dumpert Process Dumper Execution

Detects Dumpert execution on Windows via known hash and command line reference to Dumpert.dll for lsass memory dumping.

FreeReviewedSigma · Critical · v4

Product: windows
Category: process_creation
Author: Florian Roth (Nextron Systems) (SigmaHQ), DRL 1.1
Published: 2020-02-04
Updated: 2026-09-24

ATT&CK techniques

Cred Access

Recon
Resource Dev
Initial Access
Execution
Persistence
Priv Esc
Defense Evasion
Cred Access
- T1003.001LSASS Memory
Discovery
Lateral Movement
Collection
C2
Exfiltration
Impact

What it detects

This rule identifies execution of the Dumpert process dumper by matching process command lines referencing Dumpert.dll or Dumpert.exe and a specific IMPHASH value. Dumpert is used to dump the memory of lsass.exe, which is a common credential-access technique attackers rely on to extract authentication material. The detection relies on Windows process creation telemetry, including the command line and process hash IMPHASH.

Reporting behind it

Related detections9 linkedT1003.001 — drag to rearrange

Malicious Mimikatz Credential Dumping via Command Line Arguments

Malicious Credential Extraction via Volatility Memory Analysis (via process_creation)

Suspicious Physical Memory Acquisition via WinPmem (via process_creation)

Malicious LSASS Credential Dump via Rundll32 Comsvcs MiniDump via Process Creation (via process_creation)

Suspicious LSASS Credential Access via PowerShell (via process_creation)

Suspicious LSASS Memory Dump via Task Manager After Ivanti Exploitation

Suspicious ProcDump LSASS Memory Dump via process_creation

Malicious Mimikatz Credential Dump Log File Creation (via file_event)

Malicious WDigest UseLogonCredential Enabled for Cleartext Credential Theft (via registry_set)

Windows HackTool: Dumpert Process Dumper Execution

Pivot detection · T1003.001 · 9 related

Changelog

v4
Candidate ingested via manual entry.2026-09-24
v2
Candidate ingested via manual entry.2026-07-31
v1
No changelog recorded for this version.2026-07-30

Detection content is published as a reviewed draft. Tune thresholds and exclusions against your own telemetry before enabling this rule for alerting.

windows-hacktool-execution-dumpert-process-dumper-loading-dumpert-dll-2704ab9e

title: "Windows HackTool: Dumpert Process Dumper Execution"
id: e8d0d804-a9a6-4e3f-b384-e37004fbca8a
status: test
description: This rule identifies execution of the Dumpert process dumper by matching process command lines referencing Dumpert.dll or Dumpert.exe and a specific IMPHASH value. Dumpert is used to dump the memory of lsass.exe, which is a common credential-access technique attackers rely on to extract authentication material. The detection relies on Windows process creation telemetry, including the command line and process hash IMPHASH.
references:
  - https://github.com/outflanknl/Dumpert
  - https://unit42.paloaltonetworks.com/actors-still-exploiting-sharepoint-vulnerability/
  - https://github.com/SigmaHQ/sigma/blob/master/rules/windows/process_creation/proc_creation_win_hktl_dumpert.yml
author: Florian Roth (Nextron Systems), Huntrule Team
date: 2020-02-04
modified: 2026-09-16
tags:
  - attack.credential-access
  - attack.t1003.001
logsource:
  category: process_creation
  product: windows
detection:
  selection:
    - Hashes|contains: IMPHASH=09D278F9DE118EF09163C6140255C690
    - CommandLine|contains:
        - Dumpert.dll
        - Dumpert.exe
  condition: selection
falsepositives:
  - Very unlikely
level: critical
regression_tests_path: regression_data/rules/windows/process_creation/proc_creation_win_hktl_dumpert/info.yml
license: DRL-1.1
related:
  - id: 2704ab9e-afe2-4854-a3b1-0c0706d03578
    type: derived

Convert

This rule as a query you can run. Uses no unlock credit.

SplunkSPL