Esentutl Gather Credentials — Sigma Rule

Rule metadata and linked tags

Author: sam0x90. Source status: test; severity: medium. Source dates: 2021-08-06 / 2022-10-09.

{
  "category": "process_creation",
  "product": "windows"
}

Pinned original Sigma rule · Detection Rule License 1.1

Source SHA-256: 91b63dcc1c4b5b915324e472b3583c62d21072c95b174da46c86baf90ba748b6

Detection logic

Original source YAML. Source-tag agreement is not proof of complete semantic coverage. This rule has not been compiled for a SIEM backend or validated against live telemetry here.

title: Esentutl Gather Credentials
id: 7df1713a-1a5b-4a4b-a071-dc83b144a101
status: test
description: Conti recommendation to its affiliates to use esentutl to access NTDS dumped file. Trickbot also uses this utilities to get MSEdge info via its module pwgrab.
references:
    - https://twitter.com/vxunderground/status/1423336151860002816
    - https://thedfirreport.com/2021/08/01/bazarcall-to-conti-ransomware-via-trickbot-and-cobalt-strike/
author: sam0x90
date: 2021-08-06
modified: 2022-10-09
tags:
    - attack.credential-access
    - attack.t1003
    - attack.t1003.003
    - attack.s0404
logsource:
    category: process_creation
    product: windows
detection:
    selection:
        CommandLine|contains|all:
            - 'esentutl'
            - ' /p'
    condition: selection
falsepositives:
    - To be determined
level: medium

Original YAML and metadata in JSON

False positives

• To be determined

Source references

• https://twitter.com/vxunderground/status/1423336151860002816
• https://thedfirreport.com/2021/08/01/bazarcall-to-conti-ransomware-via-trickbot-and-cobalt-strike/