Suspicious Driver/DLL Installation Via Odbcconf.EXE — Sigma Rule

Rule metadata and linked tags

Author: Nasreddine Bencherchali (Nextron Systems). Source status: test; severity: high. Source dates: 2023-05-23 / not supplied.

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

Pinned original Sigma rule · Detection Rule License 1.1

Source SHA-256: 0cd79af0ced870c1fc8f82f44ac59668994b446c3e5bd56c3e2583a63c669791

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: Suspicious Driver/DLL Installation Via Odbcconf.EXE
id: cb0fe7c5-f3a3-484d-aa25-d350a7912729
related:
    - id: 3f5491e2-8db8-496b-9e95-1029fce852d4
      type: derived
status: test
description: Detects execution of "odbcconf" with the "INSTALLDRIVER" action where the driver doesn't contain a ".dll" extension. This is often used as a defense evasion method.
references:
    - https://lolbas-project.github.io/lolbas/Binaries/Odbcconf/
    - https://web.archive.org/web/20191023232753/https://twitter.com/Hexacorn/status/1187143326673330176
    - https://www.hexacorn.com/blog/2020/08/23/odbcconf-lolbin-trifecta/
author: Nasreddine Bencherchali (Nextron Systems)
date: 2023-05-23
tags:
    - attack.stealth
    - attack.t1218.008
logsource:
    category: process_creation
    product: windows
detection:
    selection_img:
        - Image|endswith: '\odbcconf.exe'
        - OriginalFileName: 'odbcconf.exe'
    selection_cli:
        # Note: The "/A" flag is not required to call a specific action
        CommandLine|contains: 'INSTALLDRIVER '
    filter_main_dll_ext:
        CommandLine|contains: '.dll'
    condition: all of selection_* and not 1 of filter_main_*
falsepositives:
    - Unlikely
level: high

Original YAML and metadata in JSON

False positives

• Unlikely

Source references

• https://lolbas-project.github.io/lolbas/Binaries/Odbcconf/
• https://web.archive.org/web/20191023232753/https://twitter.com/Hexacorn/status/1187143326673330176
• https://www.hexacorn.com/blog/2020/08/23/odbcconf-lolbin-trifecta/