Detections
Explore public detection logic contributed by the community across SIEM and rule languages.
68 detections
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Detects known Indicators of Compromise (IOCs) associated with the Ebury Linux backdoor, including specific file hashes, implants like libkeyutils.so.1.10.2, malicious IP connections, and associated network/email artifacts using Microsoft Defender XDR advanced hunting.
Detects known Indicators of Compromise (IOCs) associated with the Ebury Linux backdoor, including specific file hashes, implants like libkeyutils.so.1.10.2, malicious IP connections, and associated network/email artifacts using Microsoft Defender XDR advanced hunting.
Detects known Indicators of Compromise (IOCs) associated with the Ebury Linux backdoor, including specific file hashes, implants like libkeyutils.so.1.10.2, malicious IP connections, and associated network/email artifacts using Microsoft Defender XDR advanced hunting.
Detects known Indicators of Compromise (IOCs) associated with the Ebury Linux backdoor, including specific file hashes, implants like libkeyutils.so.1.10.2, malicious IP connections, and associated network/email artifacts using Microsoft Defender XDR advanced hunting.
Detects known Indicators of Compromise (IOCs) associated with the Ebury Linux backdoor, including specific file hashes, implants like libkeyutils.so.1.10.2, malicious IP connections, and associated network/email artifacts using Microsoft Defender XDR advanced hunting.
Detects the creation of a potentially malicious shared library (libcache.so) in /usr/local/lib followed by a modification of the /etc/ld.so.preload file on Linux systems within a short time frame. This technique is commonly used for persistence and code injection, where the dynamic linker is forced to load the malicious library before others.
Detects potential dynamic linker hijacking on Linux systems by monitoring for the use of non-standard LD_PRELOAD paths in process command lines or unauthorized modifications to the /etc/ld.so.preload configuration file, which can be used to inject malicious code into processes.
Detects unauthorized or suspicious modifications to critical Linux configuration directories (e.g., cron, rc, init, ipsec) or specific application-related paths by processes not typically associated with system management or package maintenance. The rule further elevates risk when specific indicators like LD_PRELOAD, LD_LIBRARY_PATH, or known malicious string artifacts are present in the command line or file path.
Detects indicators of persistence via dynamic linker hijacking on Linux systems, specifically looking for the creation or usage of .libcache.so, modifications to /etc/ld.so.preload, hidden shell profile droppers, or node process execution utilizing LD_PRELOAD variables.
Detects evidence of the MYRA Linux RAT attempting to establish persistence via the LD_PRELOAD environment variable mechanism. The rule monitors for the creation or modification of specific malicious library files (libcache.so, .sh.local) and the execution of processes utilizing LD_PRELOAD to hijack dynamic linker operations.
Detects injection of malicious DYLIB libraries via LC_LOAD_DYLIB mechanism
This rule detects various Linux persistence mechanisms, including the use of LD_PRELOAD to hijack dynamic linker execution, the creation or modification of malicious cron jobs, and tampering with shell startup scripts. These techniques allow an adversary to maintain access to a compromised host by ensuring malicious code is executed automatically or injected into legitimate processes.
This rule monitors for suspicious activities related to Pluggable Authentication Modules (PAM) and authentication daemons. It detects unauthorized modifications to PAM configuration and shared object files, unexpected child processes spawned by sshd, the use of LD_PRELOAD in authentication contexts, and the tracing of authentication binaries (e.g., sshd, login, sudo) via strace.
This rule detects suspicious HTTP request bodies containing the 'LD_PRELOAD' environment variable assignment, targeting common temporary or writable directories. This behavior is indicative of an attempt to perform dynamic linker hijacking on a Linux system to inject malicious shared libraries into target processes.
Detects persistence mechanisms associated with the MYRA Linux RAT, including malicious library injection via LD_PRELOAD using /usr/local/lib/.libcache.so, creation of persistence scripts in /etc/profile.d/, and process masquerading where a process executes as 'systemd-userdbd' but is not launched by the legitimate systemd manager.
Detects evidence of the MYRA RAT attempting to establish persistence via the LD_PRELOAD environment variable. This is achieved by creating or modifying malicious shared libraries (e.g., .libcache.so) and configuring system startup files (e.g., /etc/profile.d/.sh.local) to ensure the library is loaded by the dynamic linker on startup.
Detects the execution of the LANDFALL spyware's SELinux policy manipulation helper (`l.so`). The spyware's loader (`b.so`) sets a `PRELOAD_PATH` environment variable pointing to `l.so` and uses `LD_PRELOAD` to inject another payload into the benign `/system/bin/id` process. This behavior is specific to the "interactive" execution mode of the spyware.
Detects unauthorized persistence mechanisms associated with the Miasma MYRA RAT on Linux systems. The rule monitors for the creation of specific hidden files in '/usr/local/lib/' and '/etc/profile.d/', as well as modifications to '/etc/ld.so.preload', while excluding activity from known system package managers.
Detects potential dynamic linker hijacking on Linux systems by monitoring for the use of non-standard LD_PRELOAD paths in process command lines or unauthorized modifications to the /etc/ld.so.preload configuration file, which can be used to inject malicious code into processes.
Detects indicators of the MYRA rootkit, specifically the creation of a hidden shared library in /usr/local/lib/, persistence via a shell script in /etc/profile.d/, and the execution of processes utilizing the LD_PRELOAD environment variable to load the malicious library.
Detects persistence mechanisms associated with the MYRA Linux RAT, including the use of LD_PRELOAD to load a malicious shared library from a hidden path, persistent shell profile modification via /etc/profile.d/.sh.local, and process masquerading as systemd-userdbd. This rule is linked to the Polymarket Trap campaign involving malicious npm packages.
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