Detections
Explore public detection logic contributed by the community across SIEM and rule languages.
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Detects network connections to Visual Studio Code tunnel domains initiated by a process on a system. Attackers can abuse that feature to establish a reverse shell or persistence on a machine.
DefenderXDR Custom Detection
Detects PowerShell activity associated with the Kimsuky threat actor, where system information is collected and exfiltrated to a private GitHub repository, or where other IOCs related to this campaign are observed. This technique was observed in a campaign distributing the XenoRAT malware.
Detects TTPs associated with the HazyBeacon backdoor, used by the threat cluster CL-STA-1020. This rule identifies the creation of a specific persistence service and the execution of custom exfiltration tools from the C:\ProgramData directory. This threat also uses C2 communication via AWS Lambda URLs (e.g., *.lambda-url.*.on.aws) from the mscorsvw.exe process, which should be monitored via network logs.
Detects PowerShell scripts leveraging the "Invoke-WebRequest" cmdlet to send data via either "PUT" or "POST" method.
This query detects the creation of archive files (ZIP, 7z, RAR) in common temporary or publicly writable directories (C:\Users\Public\, C:\ProgramData\, C:\Windows\Temp, C:\PerfLogs). The files are written by processes commonly abused in attacks, such as powershell.exe, cmd.exe, 7z.exe, winrar.exe, or explorer.exe.
Detects a network connection initiated by a binary to "api.mega.co.nz".
Attackers were seen abusing file sharing websites similar to "mega.nz" in order to upload/download additional payloads.
Attackers were seen abusing file sharing websites similar to "mega.nz" in order to upload/download additional payloads.
Detects an executable that isn't dropbox but communicates with the Dropbox API
Detects network connections to Cloudflared tunnels domains initiated by a process on the system.
Attackers can abuse that feature to establish a reverse shell or persistence on a machine.
Attackers can abuse that feature to establish a reverse shell or persistence on a machine.
Detects network connections to Devtunnels domains initiated by a process on a system. Attackers can abuse that feature to establish a reverse shell or persistence on a machine.
Detects an a non-browser process interacting with the Telegram API which could indicate use of a covert C2
Detects Odyssey Infostealer, a macOS malware known for stealing sensitive data and establishing persistence. This rule identifies specific strings related to its C2 communication, data theft, and persistence mechanisms.
Detects TTPs associated with the HazyBeacon backdoor, which has been observed targeting governmental entities in Southeast Asia. This rule identifies specific service creation for persistence, DLL sideloading of mscorsvc.dll, C2 communication via AWS Lambda URLs, and execution of known exfiltration tools from the C:\ProgramData directory.
Detects a sequence of events indicative of a new device being registered using a refresh token, a TTP associated with the ROADtools framework following an OAuth phishing attack. This sequence involves the Device Registration Service adding a device with a specific hardcoded OS version, followed by user and owner assignments, all within a short timeframe and sharing the same correlation ID.
This analytic detects outbound connections from Cisco Secure Firewall Threat Defense to commonly abused file sharing and pastebin-style hosting domains. It specifically looks for allowed connections where the URL matches a predefined list of known data hosting or temporary storage services. These platforms are frequently used by adversaries for malware delivery, data exfiltration, command and control (C2) beacons, or staging of encoded payloads. Identifying such connections can indicate potential abuse of legitimate infrastructure as part of an attacker's kill chain, suggesting tool staging, credential dumping, or outbound data leaks over HTTP(S).
Detects potential misuse of TryCloudflare tunnels for malware delivery or C2 communication by monitoring command-line arguments of common scripting and download tools. Adversaries leverage legitimate services like TryCloudflare to host malicious payloads and evade detection.
Generic rule content from file: LOLBAS - Execution - Outbound Traffic to Suspicious TLD
KQL Query from file: NauthNRPC Detection
KQL Query
KQL Query
KQL Query
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