Query: alert when Detects SSH user login access failures. Please note that this rule can be noisy and is recommended to use with correlati
Matching passage: Sigma rule: Detects SSH user login access failures. Please note that this rule can be noisy and is recommended to use with correlati. Logsource: bitbucket / audit. Rule: title: Bitbucket User Login Failure Via SSH id: d3f90469-fb05-42ce-b67d-0fded91bbef3 status: test description: 'Detects SSH user login access failures. Please note that this rule can be noisy and is recommended to use with correlation based on "author.name" field. ' references: - https://confluence.atlassian.com/bitbucketserver/view-and-configure-the-audit-log-776640417.html - https://confluence.atlassian.com/bitbucketserver/enable-ssh-access-to-git-repositories-776640358.html author: Muhammad Faisal (@faisalusuf) date: 2024-02-25 tags: - attack.lateral-movement - attack.credential-access - attack.t1021.004 - attack.t1110 logsource: product: bitbucket service: audit definition: 'Requirements: "Advance" log level is required to receive these audit events.' detection: selection: auditType.category: Authentication auditType.action: User login failed(SSH) condition: selection falsepositives: - Legitimate user wrong password attempts. level: medium
Near-miss passage: Sigma rule: Detects the use of WinAPI Functions via the commandline. As seen used by threat actors via the tool winapiexec. Logsource: windows / process_creation. Rule: title: Potential WinAPI Calls Via CommandLine id: ba3f5c1b-6272-4119-9dbd-0bc8d21c2702 related: - id: 03d83090-8cba-44a0-b02f-0b756a050306 type: derived status: test description: Detects the use of WinAPI Functions via the commandline. As seen used by threat actors via the tool winapiexec references: - https://twitter.com/m417z/status/1566674631788007425 author: Nasreddine Bencherchali (Nextron Systems) date: 2022-09-06 modified: 2025-03-06 tags: - attack.execution - attack.t1106 logsource: category: process_creation product: windows detection: selection: CommandLine|contains: - AddSecurityPackage - AdjustTokenPrivileges - Advapi32 - CloseHandle - CreateProcessWithToken - CreatePseudoConsole - CreateRemoteThread - CreateThread - CreateUserThread - DangerousGetHandle - DuplicateTokenEx - EnumerateSecurityPackages - FreeHGlobal - FreeLibrary - GetDelegateForFunctionPointer - GetLogonSessionData - GetModuleHandle - GetProcAddress - GetProcessHandle - GetTokenInformation - ImpersonateLoggedOnUser - kernel32 - LoadLibrary - memcpy - MiniDumpWriteDump - ntdll - OpenDesktop - OpenProcess - OpenProcessToken - OpenThreadToken - OpenWindowStation - PtrToString - QueueUserApc - ReadProcessMemory - RevertToSelf - RtlCreateUserThread - secur32 - SetThreadToken - VirtualAlloc - VirtualFree - VirtualProtect - WaitForSingleObject - WriteInt32 - WriteProcessMemory - ZeroFreeGlobalAllocUnicode filter_optional_mpcmdrun: Image|endswith: \MpCmdRun.exe CommandLine|contains: GetLoadLibraryWAddress32 filter_optional_compatTelRunner: ParentImage|endswith: \CompatTelRunner.exe CommandLine|contains: - FreeHGlobal - PtrToString - kernel32 - CloseHandle condition: selection and not 1 of filter_optional_* falsepositives: - Some legitimate action or applications may use these functions. Investigate further to determine the legitimacy of the activity. level: high