Detections
Explore public detection logic contributed by the community across SIEM and rule languages.
7,270 detections
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Detects the use of the "rsync" utility to execute a shell. Such behavior may be associated with privilege escalation, unauthorized command execution, or to break out from restricted environments.
Detects the execution of a shell as a sub-process of "rsync" without the expected command line flag "-e" being used. This behavior is commonly associated with attempts to exploit CVE-2024-12084, leading to arbitrary command execution or privilege escalation.
Detects the execution of a shell as sub process of "rsync" without the expected command line flag "-e" being used, which could be an indication of exploitation as described in CVE-2024-12084. This behavior is commonly associated with attempts to execute arbitrary commands or escalate privileges, potentially leading to unauthorized access or further exploitation.
Yara rule that detects PygmyGoat backdoor.
Yara rule that detects Helldown ransomware.
Detects the use of the "rsync" utility to execute a shell. Such behavior may be associated with privilege escalation, unauthorized command execution, or to break out from restricted environments.
Detects the execution of command-line utilities such as 'kill', 'pkill', 'killall', or 'xkill' to terminate or send signals to running processes on a Linux system. This activity can be indicative of an adversary attempting to disrupt services, evade defenses, or clean up their tracks.
Detects enumeration of local system accounts on Linux. This information can help adversaries determine which local accounts exist on a system to aid in follow-on behavior. The rule identifies common commands and file accesses used for this purpose, such as 'lastlog', 'id', 'lsof -u', and utilities like 'cat', 'head', 'tail' accessing '/etc/passwd', '/etc/shadow', or '/etc/sudoers'.
This rule detects the execution of common Linux utilities used for process discovery. Adversaries often use these commands (atop, htop, pgrep, ps, pstree, top) to gather information about running processes on a system, which helps them understand the environment and plan subsequent actions. This information can reveal common software or applications running on systems within the network.
Detects attempts to discover password policy information on Linux systems by monitoring access to key configuration files and the execution of 'chage' and 'passwd' commands with specific arguments.
Detects the use of common Linux utilities such as 'find', 'tree', 'findmnt', 'ls -R', and 'mlocate' for discovering files, directories, and potentially network shares. This activity is often performed by adversaries to gain situational awareness of the file system.
Detects password policy discovery commands
Detects usage of system utilities such as "find", "tree", "findmnt", etc, to discover files, directories and network shares.
Detects a Python process attempting to spawn a pseudo-terminal (TTY) using the `pty` module. This behavior is often indicative of an attacker establishing a reverse shell for interactive command execution on a compromised system. The rule specifically looks for Python executables and command-line arguments that import the `pty` module and call its `spawn` function.
This rule detects highly relevant antivirus alerts that specifically report the presence of a web shell. It is designed to flag antivirus detections where the signature indicates a web shell, often identified by keywords related to common web scripting languages (ASP, PHP, JSP, Perl) and terms like 'Backdoor', 'Webshell', or specific web shell names (C99shell, Chopper). The rule emphasizes that such alerts, even if the malware is blocked, warrant further investigation into how the web shell was initially placed on the system.
Detects an Antivirus alert in a highly relevant file path or with a relevant file name. This event must not be ignored just because the AV has blocked the malware but investigate, how it came there in the first place.
Detects the execution of Python code that imports the 'pty' and 'socket' modules and uses 'spawn' and '.connect' functions, which is a common pattern for establishing a reverse shell.
Detects suspicious DNS queries to Monero mining pools
Detects a python process calling to the PTY module in order to spawn a pretty tty which could be indicative of potential reverse shell activity.
Detects the execution of python with calls to the socket and pty module in order to connect and spawn a potential reverse shell.
This rule detects the execution of various known hacktools on Linux systems by monitoring process creation events and matching against a predefined list of tool names in the 'Image' field. The tools covered include C2 frameworks (e.g., Cobalt Strike, Metasploit, Havoc, Merlin, Sliver), network scanners (e.g., Nmap derivatives, Nuclei, Recon-ng), web enumeration tools (e.g., Dirb, Ffuf, Gobuster), web vulnerability scanners (e.g., Nikto, WPSCan), and other exploit/post-exploitation tools (e.g., Aircrack-ng, Bloodhound-Python, Hashcat, Hydra, John, SQLMap, PEASS-ng).
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