Potential Devil Bait Malware Reconnaissance

title: Potential Devil Bait Malware Reconnaissance
id: e8954be4-b2b8-4961-be18-da1a5bda709c
related:
    - id: 8e0bb260-d4b2-4fff-bb8d-3f82118e6892
      type: derived
status: test
description: Detects specific process behavior observed with Devil Bait samples
references:
    - https://www.ncsc.gov.uk/static-assets/documents/malware-analysis-reports/devil-bait/NCSC-MAR-Devil-Bait.pdf
    - https://www.virustotal.com/gui/file/fa71eee906a7849ba3f4bab74edb577bd1f1f8397ca428591b4a9872ce1f1e9b/behavior
author: Nasreddine Bencherchali (Nextron Systems), NCSC (Idea)
date: 2023-05-15
modified: 2025-10-19
tags:
    - attack.stealth
    - attack.t1218
    - detection.emerging-threats
logsource:
    category: process_creation
    product: windows
detection:
    selection_redirect:
        ParentImage|endswith: '\wscript.exe'
        Image|endswith: '\cmd.exe'
        CommandLine|contains: '>>%APPDATA%\Microsoft\'
        CommandLine|endswith:
            - '.xml'
            - '.txt'
    selection_recon_cmd:
        - CommandLine|re: 'ipconfig\s+/all'
        - CommandLine|contains:
              # Taken from a6f9043627f8be2452153b5dbf6278e9b91763c3b5c2aea537a859e0c8c6b504
              # If you find samples using other commands please add them
              - 'dir'
              - 'systeminfo'
              - 'tasklist'
    condition: all of selection_*
falsepositives:
    - Unlikely
level: high