Query: write Sigma for Detects execution of "odbcconf" with the "-f" flag in order to load a response file which might contain a malicious acti
Matching passage: Sigma rule: Detects execution of "odbcconf" with the "-f" flag in order to load a response file which might contain a malicious acti. Logsource: windows / process_creation. Rule: title: Response File Execution Via Odbcconf.EXE id: 5f03babb-12db-4eec-8c82-7b4cb5580868 related: - id: 2d32dd6f-3196-4093-b9eb-1ad8ab088ca5 type: similar - id: 65d2be45-8600-4042-b4c0-577a1ff8a60e type: obsolete status: test description: Detects execution of "odbcconf" with the "-f" flag in order to load a response file which might contain a malicious action. references: - https://learn.microsoft.com/en-us/sql/odbc/odbcconf-exe?view=sql-server-ver16 - https://lolbas-project.github.io/lolbas/Binaries/Odbcconf/ - https://www.cybereason.com/blog/threat-analysis-report-bumblebee-loader-the-high-road-to-enterprise-domain-control - https://www.hexacorn.com/blog/2020/08/23/odbcconf-lolbin-trifecta/ author: Kirill Kiryanov, Beyu Denis, Daniil Yugoslavskiy, oscd.community, Nasreddine Bencherchali (Nextron Systems) date: 2023-05-22 modified: 2024-03-05 tags: - attack.stealth - attack.t1218.008 logsource: category: process_creation product: windows detection: selection_img: - Image|endswith: \odbcconf.exe - OriginalFileName: odbcconf.exe selection_cli: CommandLine|contains|windash: ' -f ' selection_rsp_ext: CommandLine|contains: .rsp condition: all of selection_* falsepositives: - The rule is looking for any usage of response file, which might generate false positive when this function is used legitimately. Investigate the contents of the ".rsp" file to determine if it is malicious and apply additional filters if necessary. level: medium
Near-miss passage: Sigma rule: Detects suspicious manipulations of default accounts such as 'administrator' and 'guest'. For example 'enable' or 'disab. Logsource: windows / process_creation. Rule: title: Suspicious Manipulation Of Default Accounts Via Net.EXE id: 5b768e71-86f2-4879-b448-81061cbae951 status: test description: Detects suspicious manipulations of default accounts such as 'administrator' and 'guest'. For example 'enable' or 'disable' accounts or change the password...etc references: - https://www.trellix.com/en-sg/about/newsroom/stories/threat-labs/lockergoga-ransomware-family-used-in-targeted-attacks.html - https://redacted.com/blog/bianlian-ransomware-gang-gives-it-a-go/ - https://www.microsoft.com/security/blog/2022/09/07/profiling-dev-0270-phosphorus-ransomware-operations/ author: Nasreddine Bencherchali (Nextron Systems) date: 2022-09-01 modified: 2023-02-21 tags: - attack.collection - attack.t1560.001 logsource: category: process_creation product: windows detection: selection_img: - Image|endswith: - \net.exe - \net1.exe - OriginalFileName: - net.exe - net1.exe selection_user_option: CommandLine|contains: ' user ' selection_username: CommandLine|contains: - ' Järjestelmänvalvoja ' - ' Rendszergazda ' - ' Администратор ' - ' Administrateur ' - ' Administrador ' - ' Administratör ' - ' Administrator ' - ' guest ' - ' DefaultAccount ' - ' "Järjestelmänvalvoja" ' - ' "Rendszergazda" ' - ' "Администратор" ' - ' "Administrateur" ' - ' "Administrador" ' - ' "Administratör" ' - ' "Administrator" ' - ' "guest" ' - ' "DefaultAccount" ' - ' ''Järjestelmänvalvoja'' ' - ' ''Rendszergazda'' ' - ' ''Администратор'' ' - ' ''Administrateur'' ' - ' ''Administrador'' ' - ' ''Administratör'' ' - ' ''Administrator'' ' - ' ''guest'' ' - ' ''DefaultAccount'' ' filter: CommandLine|contains|all: - guest - /active no condition: all of selection_* and not filter falsepositives: - Some false positives could occur with the admin or guest account. It depends on the scripts being used by the admins in your env. If you experience a lot of FP you could reduce the level to medium level: high