Query: detect Detects the creation or modification of files within the "sudoers.d" directory on Linux systems. Such activity may indic in logs
Matching passage: Sigma rule: Detects the creation or modification of files within the "sudoers.d" directory on Linux systems. Such activity may indic. Logsource: linux / file_event. Rule: title: Persistence Via Sudoers.d Files id: ddb26b76-4447-4807-871f-1b035b2bfa5d status: test description: 'Detects the creation or modification of files within the "sudoers.d" directory on Linux systems. Such activity may indicate an attempt to establish or maintain privilege escalation by granting specific users elevated permissions. Unauthorized changes to sudoers files are a common technique used by attackers to persist administrative access. ' references: - https://github.com/h3xduck/TripleCross/blob/1f1c3e0958af8ad9f6ebe10ab442e75de33e91de/apps/deployer.sh author: Nasreddine Bencherchali (Nextron Systems) date: 2022-07-05 modified: 2026-03-18 tags: - attack.privilege-escalation - attack.persistence - attack.t1548.003 logsource: product: linux category: file_event detection: selection: TargetFilename|startswith: /etc/sudoers.d/ filter_main_dpkg: Image|endswith: /usr/bin/dpkg TargetFilename: /etc/sudoers.d/README.dpkg-new condition: selection and not 1 of filter_main_* falsepositives: - Creation of legitimate files in sudoers.d folder as part of administrator work level: medium
Near-miss passage: Sigma rule: Detects potential persistence behavior using the windows telemetry registry key. Windows telemetry makes use of the bina. Logsource: windows / registry_set. Rule: title: Potential Registry Persistence Attempt Via Windows Telemetry id: 73a883d0-0348-4be4-a8d8-51031c2564f8 related: - id: 4e8d5fd3-c959-441f-a941-f73d0cdcdca5 type: obsolete status: test description: 'Detects potential persistence behavior using the windows telemetry registry key. Windows telemetry makes use of the binary CompatTelRunner.exe to run a variety of commands and perform the actual telemetry collections. This binary was created to be easily extensible, and to that end, it relies on the registry to instruct on which commands to run. The problem is, it will run any arbitrary command without restriction of location or type. ' references: - https://www.trustedsec.com/blog/abusing-windows-telemetry-for-persistence/ author: Lednyov Alexey, oscd.community, Sreeman date: 2020-10-16 modified: 2023-08-17 tags: - attack.privilege-escalation - attack.execution - attack.persistence - attack.t1053.005 logsource: category: registry_set product: windows definition: 'Requirements: Sysmon config that monitors \SOFTWARE\Microsoft\Windows NT\CurrentVersion\AppCompatFlags\TelemetryController subkey of the HKLM hives' detection: selection: TargetObject|contains: \SOFTWARE\Microsoft\Windows NT\CurrentVersion\AppCompatFlags\TelemetryController\ TargetObject|endswith: \Command Details|contains: - .bat - .bin - .cmd - .dat - .dll - .exe - .hta - .jar - .js - .msi - .ps - .sh - .vb filter_main_generic: Details|contains: - \system32\CompatTelRunner.exe - \system32\DeviceCensus.exe condition: selection and not 1 of filter_main_* falsepositives: - Unknown level: high