Query: Sigma YAML for windows / process_creation
Matching passage: Sigma rule: Detects the execution of Sysinternals ADExplorer with the "-snapshot" flag in order to save a local copy of the active d. Logsource: windows / process_creation. Rule: title: Suspicious Active Directory Database Snapshot Via ADExplorer id: ef61af62-bc74-4f58-b49b-626448227652 related: - id: 9212f354-7775-4e28-9c9f-8f0a4544e664 type: derived status: test description: Detects the execution of Sysinternals ADExplorer with the "-snapshot" flag in order to save a local copy of the active directory database to a suspicious directory. This can be used by attackers to extract data for Bloodhound, usernames for password spraying or use the meta data for social engineering. The snapshot doesn't contain password hashes but there have been cases, where administrators put passwords in the comment field. references: - https://www.documentcloud.org/documents/5743766-Global-Threat-Report-2019.html - https://learn.microsoft.com/de-de/sysinternals/downloads/adexplorer - https://github.com/c3c/ADExplorerSnapshot.py/tree/f700904defac330802bbfedd1d8ffd9248f4ee24 - https://www.packetlabs.net/posts/scattered-spider-is-a-young-ransomware-gang-exploiting-large-corporations/ - https://www.nccgroup.com/us/research-blog/lapsus-recent-techniques-tactics-and-procedures/ - https://trustedsec.com/blog/adexplorer-on-engagements author: Nasreddine Bencherchali (Nextron Systems) date: 2023-03-14 modified: 2025-07-09 tags: - attack.discovery - attack.t1087.002 - attack.t1069.002 - attack.t1482 logsource: category: process_creation product: windows detection: selection_img: - Image|endswith: - \ADExp.exe - \ADExplorer.exe - \ADExplorer64.exe - \ADExplorer64a.exe - OriginalFileName: AdExp - Description: Active Directory Editor - Product: Sysinternals ADExplorer selection_flag: CommandLine|contains: snapshot selection_paths: CommandLine|contains: - \Downloads\ - \Users\Public\ - \AppData\ - \Windows\Temp\ condition: all of selection_* falsepositives: - Unknown level: high
Near-miss passage: Sigma rule: Detects the execution of certutil with either the "decode" or "decodehex" flags to decode base64 or hex encoded files. T. Logsource: windows / process_creation. Rule: title: File Decoded From Base64/Hex Via Certutil.EXE id: cc9cbe82-7bc0-4ef5-bc23-bbfb83947be7 status: test description: Detects the execution of certutil with either the "decode" or "decodehex" flags to decode base64 or hex encoded files. This can be abused by attackers to decode an encoded payload before execution references: - https://learn.microsoft.com/en-us/windows-server/administration/windows-commands/certutil - https://unit42.paloaltonetworks.com/new-babyshark-malware-targets-u-s-national-security-think-tanks/ - https://news.sophos.com/en-us/2021/04/13/compromised-exchange-server-hosting-cryptojacker-targeting-other-exchange-servers/ - https://twitter.com/JohnLaTwC/status/835149808817991680 - https://learn.microsoft.com/en-us/archive/blogs/pki/basic-crl-checking-with-certutil - https://lolbas-project.github.io/lolbas/Binaries/Certutil/ author: Florian Roth (Nextron Systems), Jonhnathan Ribeiro, oscd.community date: 2023-02-15 modified: 2025-06-04 tags: - attack.stealth - attack.t1027 logsource: category: process_creation product: windows detection: selection_img: - Image|endswith: \certutil.exe - OriginalFileName: CertUtil.exe selection_cli: CommandLine|contains|windash: - '-decode ' - '-decodehex ' condition: all of selection_* falsepositives: - Unknown level: high regression_tests_path: regression_data/rules/windows/process_creation/proc_creation_win_certutil_decode/info.yml