Import LDAP Data Interchange Format File Via Ldifde.EXE — Sigma Rule

Rule metadata and linked tags

Author: @gott_cyber. Source status: test; severity: medium. Source dates: 2022-09-02 / 2023-03-14.

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

Pinned original Sigma rule · Detection Rule License 1.1

Source SHA-256: b7468ec311219b67e8e41dc725b79b0cfdf7b4ca34be490a0a531f8ad9a49a97

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: Import LDAP Data Interchange Format File Via Ldifde.EXE
id: 6f535e01-ca1f-40be-ab8d-45b19c0c8b7f
status: test
description: |
    Detects the execution of "Ldifde.exe" with the import flag "-i". The can be abused to include HTTP-based arguments which will allow the arbitrary download of files from a remote server.
references:
    - https://twitter.com/0gtweet/status/1564968845726580736
    - https://strontic.github.io/xcyclopedia/library/ldifde.exe-979DE101F5059CEC1D2C56967CA2BAC0.html
    - https://learn.microsoft.com/en-us/previous-versions/windows/it-pro/windows-server-2012-r2-and-2012/cc731033(v=ws.11)
author: '@gott_cyber'
date: 2022-09-02
modified: 2023-03-14
tags:
    - attack.command-and-control
    - attack.stealth
    - attack.t1218
    - attack.t1105
logsource:
    category: process_creation
    product: windows
detection:
    selection_img:
        - Image|endswith: '\ldifde.exe'
        - OriginalFileName: 'ldifde.exe'
    selection_cli:
        CommandLine|contains|all:
            - '-i'
            - '-f'
    condition: all of selection_*
falsepositives:
    - Since the content of the files are unknown, false positives are expected
level: medium

Original YAML and metadata in JSON

False positives

• Since the content of the files are unknown, false positives are expected

Source references

• https://twitter.com/0gtweet/status/1564968845726580736
• https://strontic.github.io/xcyclopedia/library/ldifde.exe-979DE101F5059CEC1D2C56967CA2BAC0.html
• https://learn.microsoft.com/en-us/previous-versions/windows/it-pro/windows-server-2012-r2-and-2012/cc731033(v=ws.11)