Detections
Explore public detection logic contributed by the community across SIEM and rule languages.
303 detections
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This analytic detects the execution of the 'shred' command on a Linux machine, which is used to overwrite files to make them unrecoverable. It leverages data from Linux Auditd, focusing on process names and command-line arguments. This activity is significant because the 'shred' command can be used in destructive attacks, such as those seen in the Industroyer2 malware targeting energy facilities. If confirmed malicious, this activity could lead to the permanent destruction of critical files, severely impacting system integrity and data availability.
The analytic identifies modifications to the registry path .wav\\OpenWithProgIds, associated with the Snake Malware campaign. This activity is significant because Snake's WerFault.exe uses this registry path to decrypt an encrypted blob containing critical components like the AES key, IV, and paths for its kernel driver and loader. If confirmed malicious, this could allow the attacker to load and execute Snake's kernel driver, leading to potential system compromise and persistent access.
Yara rule that detects Sshdinjector backdoor.
Detects suspicious error messages from the OpenSSH daemon that may indicate an attempted exploit or a fatal error during an SSH connection attempt. These errors could be triggered by malformed requests or unusual client behavior designed to uncover vulnerabilities or bypass authentication.
Detects scenarios where the OpenSSH server starts listening on an SSH socket, which could indicate an attacker enabling the service for remote access or persistence. This rule specifically looks for EventID 4 from the OpenSSH service with the process name 'sshd' and a payload starting with 'Server listening on '.
Detects exploitation attempts targeting CVE-2018-15473 in OpenSSH, specifically looking for a characteristic error message generated during the pre-authentication phase when an attacker attempts to enumerate valid usernames.
Detects potential exploitation attempts of CVE-2023-2283, an authentication bypass vulnerability in libSSH. The exploitation method causes an error message indicating that keys for curve25519 could not be generated. This error message serves as a sign of an exploitation attempt, not necessarily a successful exploitation.
Detects scenarios where an attacker enables the OpenSSH server and server starts to listening on SSH socket.
Detects suspicious SSH / SSHD error messages that indicate a fatal or suspicious error that could be caused by exploiting attempts
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