Detections
Explore public detection logic contributed by the community across SIEM and rule languages.
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Detects network activity associated with the KREMLIN browser extension communicating with a known command and control domain (luizestrelhashapr.online). The rule monitors DNS queries, TLS SNI connections, and HTTP WebSocket upgrade requests to identify potential C2 communication.
Detects network communication with known malicious domains and IP addresses, as well as the presence of known malicious file hashes on the system. The rule correlates network connection events, file creation events, and process creation events against predefined lists of C2 infrastructure and malware indicators.
Detects high-volume outbound network scanning activity from a single compute resource, characterized by a significant number of distinct destination IP addresses and ports within a short timeframe. This behavior is indicative of automated service discovery and reconnaissance, often associated with adversary-orchestrated exploitation pipelines or botnet activity.
Detects the creation of a 'config.ini' file within the 'UBP-Asset' directory, correlated with subsequent FTP network activity from known associated binaries (UBPUpdater.exe, UBPPatch.Psh, cmd.exe, or UBP.exe). This behavioral pattern is indicative of Quasar RAT being delivered or updated through a fraudulent install path.
This rule detects network connections to known cryptomining pool IP addresses and domain names, as well as file or process executions matching specific hashes associated with known miner samples. It monitors for communication to command-and-control (C2) servers potentially used for cryptomining operations.
Detects malicious activities associated with the SilkParasite campaign targeting Redis servers. The rules identify the initiation of a 'SLAVEOF' command to a rogue replication host, subsequent handshake (PSYNC/REPLCONF) with an external attacker-controlled node, and the modification of server configuration ('CONFIG SET dbfilename') to potentially facilitate unauthorized file persistence or data exfiltration through the Redis replication mechanism.
Detects activity associated with the 'MovieReaper' threat campaign by identifying known malicious file hashes, command and control (C2) IP addresses, and communication with identified malicious domains. This rule monitors process execution, file operations, and network connections within the campaign's active timeframe.
This rule monitors for outbound network connections to domains and IP addresses associated with known phishing, loader, and C2 infrastructure, including specific ClickFix patterns.
This rule detects potential malicious activity by correlating device events against a known set of malicious file hashes, domains, and URLs. It identifies files with known malicious hashes, network connections to known malicious domains, and command-line processes attempting to download files from known malicious URLs using common living-off-the-land tools like PowerShell, curl, or wget.
This rule detects network traffic patterns associated with the Sauron Loader malware family. It specifically identifies outbound HTTPS beaconing to known malicious C2 domains using the TLS SNI (Server Name Indication) field.
Detects instances where PowerShell scripts are executed via the Windows Task Scheduler from within potential staging directories (ProgramData with randomized folder names). The rule identifies execution that uses common PowerShell obfuscation flags (e.g., -EncodedCommand) and requires secondary hardening bypass flags (e.g., -WindowStyle hidden), followed by correlated network activity to a specific suspicious C2 domain.
Detects instances where PowerShell scripts are executed via the Windows Task Scheduler from within potential staging directories (ProgramData with randomized folder names). The rule identifies execution that uses common PowerShell obfuscation flags (e.g., -EncodedCommand) and requires secondary hardening bypass flags (e.g., -WindowStyle hidden), followed by correlated network activity to a specific suspicious C2 domain.
Detects instances where PowerShell scripts are executed via the Windows Task Scheduler from within potential staging directories (ProgramData with randomized folder names). The rule identifies execution that uses common PowerShell obfuscation flags (e.g., -EncodedCommand) and requires secondary hardening bypass flags (e.g., -WindowStyle hidden), followed by correlated network activity to a specific suspicious C2 domain.
This rule monitors for outbound network connections to a list of known malicious IP addresses identified as part of the GhostCode command-and-control (C2) infrastructure. It uses DeviceNetworkEvents data to flag activity originating from endpoints and highlights a specific IP address used during the Intune/MDM enrollment process for further investigation.
Detects instances where PowerShell is executed with a command line string containing 'Google Chrome Update' and initiates a network connection. This behavior is indicative of a malicious process masquerading as a legitimate browser update mechanism to hide network activity.
Detects anomalous HTTP POST requests to a suspected C2 endpoint ('/beacon/pre-register') on a typosquatted domain ('thecovnresation') characterized by an application/octet-stream content type, which is indicative of encrypted C2 beacon registration activity.
Detects anomalous HTTP POST requests to a suspected C2 endpoint ('/beacon/pre-register') on a typosquatted domain ('thecovnresation') characterized by an application/octet-stream content type, which is indicative of encrypted C2 beacon registration activity.
Detects anomalous HTTP POST requests to a suspected C2 endpoint ('/beacon/pre-register') on a typosquatted domain ('thecovnresation') characterized by an application/octet-stream content type, which is indicative of encrypted C2 beacon registration activity.
Detects the handshake process of the frpc (Fast Reverse Proxy Client), which is associated with the RatHat malware family, attempting to register a reverse tunnel for command and control purposes.
Detects network activity associated with shellcode staging, specifically requests to the domain 'deadhub.org' or its specific IP address using hardcoded paths that mimic static UI assets. This activity is indicative of a loader fetching malicious fragments for in-memory execution.
This rule detects potentially malicious activity where a Python-based process or a PyInstaller-compiled executable invokes a command shell (cmd.exe, powershell.exe) or command execution via 'os.popen', followed by a network connection to 'api.telegram.org' within a 60-second window. This behavior is often characteristic of malware or tools using Telegram's API as a command-and-control (C2) channel or for data exfiltration.
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