SigmaHQ Detections
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6,800 detections
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Detects the pattern of UAC Bypass using a path parsing issue in winsat.exe (UACMe 52)
Detects the pattern of UAC Bypass using Windows Media Player osksupport.dll (UACMe 32)
Triggers on any Sysmon "FileBlockShredding" event, which indicates a violation of the configured shredding policy.
Detects use of an encoded/obfuscated version of an IP address (hex, octal...) in an URL combined with a download command
Detects usage of an encoded/obfuscated version of an IP address (hex, octal, etc.) via command line
Detects when adversaries stop services or processes by deleting or disabling their respective scheduled tasks in order to conduct data destructive activities
Detects when adversaries stop services or processes by deleting their respective scheduled tasks in order to conduct data destructive activities
Detects when adversaries stop services or processes by disabling their respective scheduled tasks in order to conduct data destructive activities
Detects changes of sensitive and critical files. Monitors files that you don't expect to change without planning on Linux system.
These files include, but are not limited to, system configuration files, authentication files, and critical application files.
Attackers often target these files to maintain persistence, escalate privileges, or disrupt system operations.
These files include, but are not limited to, system configuration files, authentication files, and critical application files.
Attackers often target these files to maintain persistence, escalate privileges, or disrupt system operations.
Detects the creation of cron files in Cron directories, which could indicate potential persistence mechanisms being established by an attacker.
Note that not all cron file creations are malicious - legitimate system administration activities and software installations may also create cron files.
This detection should be investigated in context, considering factors such as the user creating the file, the timing of creation, and the contents of the cron job.
Focus investigation on unexpected cron files created by non-administrative users or during suspicious timeframes.
Additionally, it is recommended to review the contents of the newly created cron files to assess their intent.
Furthermore, it is suggested to baseline normal cron file creation and apply additional filters to reduce false positives based on the specific environment.
Note that not all cron file creations are malicious - legitimate system administration activities and software installations may also create cron files.
This detection should be investigated in context, considering factors such as the user creating the file, the timing of creation, and the contents of the cron job.
Focus investigation on unexpected cron files created by non-administrative users or during suspicious timeframes.
Additionally, it is recommended to review the contents of the newly created cron files to assess their intent.
Furthermore, it is suggested to baseline normal cron file creation and apply additional filters to reduce false positives based on the specific environment.
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