Detections
Explore public detection logic contributed by the community across SIEM and rule languages.
926 detections
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Detects curl downloading a file, making it executable with chmod, and executing it in the background, common in FlexibleFerret malware delivery on macOS systems.
Detects the execution of shell scripts and creation of files associated with the FlexibleFerret macOS malware campaign, which is tied to fake job recruitment lures to trick users into executing malicious commands.
Detects curl command downloading payloads to /var/tmp, indicating potential initial delivery stage of FlexibleFerret malware.
Detects extraction of FlexibleFerret malware payload archive to the CDrivers directory on macOS systems.
Detects relevant commands often related to malware or hacking activity
Detects the potential abuse of the Linux Magic SysRq (System Request) key by adversaries with root or sufficient privileges
to silently manipulate or destabilize a system. By writing to /proc/sysrq-trigger, they can crash the system, kill processes,
or disrupt forensic analysis—all while bypassing standard logging. Though intended for recovery and debugging, SysRq can be
misused as a stealthy post-exploitation tool. It is controlled via /proc/sys/kernel/sysrq or permanently through /etc/sysctl.conf.
to silently manipulate or destabilize a system. By writing to /proc/sysrq-trigger, they can crash the system, kill processes,
or disrupt forensic analysis—all while bypassing standard logging. Though intended for recovery and debugging, SysRq can be
misused as a stealthy post-exploitation tool. It is controlled via /proc/sys/kernel/sysrq or permanently through /etc/sysctl.conf.
Detects potential command injection attempts against Citrix NetScaler ADC and Gateway devices. This detection is based on the patterns described in a hypothetical proof-of-concept for CVE-2025-7775, which involves injecting shell commands and referencing sensitive system paths in HTTP requests.
Detects the in-memory execution of AppleScript or JXA payloads via osascript, a technique used by the DigitStealer malware to download and run malicious code while evading file-based detections.
Detects the RedTail cryptominer targeting exposed Docker APIs by looking for specific HTTP request patterns, including the 'libredtail-http' user agent and 'docker.selfrep' parameter in the request body.
Detects common shell processes launching a reverse shell using the '/dev/tcp' redirection. This technique is known to be used by adversaries like the Clop ransomware group for persistence and command and control.
Detects suspicious command sequence that JexBoss
This rule detects a sequence of events indicative of a potential macOS ClickFix attack. It looks for a base64 encoded command executed by 'bash' or 'zsh', immediately followed (within 10 seconds) by a 'curl' command that initiates a network connection to a URL. The rule specifically excludes a whitelisted curl command to reduce false positives. The correlation of base64 execution, a subsequent curl command, and a successful network connection to the domain extracted from the curl command suggests an attempt to download and execute malicious content, possibly after decoding it.
Detects a sequence of events where a user visits a Cloudflare Pages URL (*.pages.dev) and shortly after, a suspicious command (mshta, powershell, or curl) is executed. This pattern is consistent with the UNC5142 threat actor's TTP of using social engineering lures hosted on Cloudflare Pages to trick users into running malicious commands.
Detects the execution of a shell command characteristic of APT36's use of malicious .desktop files on Linux. The command typically involves using 'curl' to download a hex-encoded payload and 'chmod' to make it executable, often within the a tmp directory.
The following analytic detects multiple executions of Living off the Land (LOLbin) binaries on macOS within a short period. It leverages osquery to monitor process events and identifies commands such as "find", "crontab", "screencapture", "openssl", "curl", "wget", "killall", and "funzip". This activity is significant as LOLbins are often used by attackers to perform malicious actions while evading detection. If confirmed malicious, this behavior could allow attackers to execute arbitrary code, escalate privileges, or persist within the environment, posing a significant security risk.
The analytic detects instances where Java or Tomcat processes spawn a Linux shell. This activity may indicate exploitation attempts, such as those related to CVE-2021-44228 (Log4Shell). This detection leverages Endpoint Detection and Response (EDR) telemetry, focusing on process names and parent-child process relationships. This activity is significant as it can signify a compromised Java application, potentially leading to unauthorized shell access. If confirmed malicious, attackers could execute arbitrary commands, escalate privileges, or maintain persistent access, posing a severe threat to the environment.
Detects suspicious child processes spawned by a Java process, which may indicate post-exploitation activity related to the Oracle E-Business Suite vulnerability CVE-2025-61882. The exploit chain often results in a reverse shell.
Detects potential exploitation of VMware CVE-2025-41244, where a privileged VMware service discovery script executes a binary from a world-writable directory like /tmp. This behavior is consistent with the local privilege escalation technique used by UNC5174.
Yara rule that detects BPFDoor backdoor.
Detects the creation of a PHP web shell file named 'hafuab.php' in '/usr/local/webui/' by an 'echo' command, which includes PHP code to display 'test - Open source project (github.com/test/test)' and 'phpinfo()'. This activity is indicative of an attacker attempting to establish persistent access and gain information about the web server environment.
This analytic identifies the execution of suspicious processes, such as `cmd.exe`, `powershell.exe`, or `bash.exe`, when they are spawned by web server processes like `w3wp.exe` or `nginx.exe`. This behavior is a strong indicator of WebShell activity, where an adversary exploits a web application vulnerability to gain persistent access and command execution capabilities on the web server. Successful exploitation could lead to arbitrary command execution, privilege escalation, and data exfiltration.
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