Detections
Explore public detection logic contributed by the community across SIEM and rule languages.
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Detects IDE processes creating ZIP archives in temporary directories, which can indicate exfiltration of cryptocurrency wallets. The rule specifically looks for 'Code.exe' (VS Code) or 'cursor.exe' creating '.zip' files in common temporary paths like 'AppData\Local\Temp' or '/tmp/'.
Identifies Node.js initiating exfiltration connections to the C2 with parameters indicating disabled TLS certificate validation.
Detects network activity initiated by the 'PerfWatson2.exe' process, which is associated with the TinyRCT .NET backdoor, communicating with a known malicious C2 IP address (45.32.113.172). The rule monitors for network connections from this specific binary to the identified infrastructure, indicative of beaconing or command and control activity.
Detects the final curl command transmitting archived credentials to a remote C2 via a multipart form-data upload, specifically looking for curl commands that use '-X POST' and '-F file=@/tmp/.*.zip' to upload a zip file from the /tmp directory.
Detects curl POST requests sending JSON telemetry to attacker endpoints post-infection, specifically looking for patterns associated with the ClickFix campaign.
Detects the Silent Rotor malware transmitting collected system profile as a serialized JSON blob to the C2 domain cdn.kleymarket.ru. The detection specifically looks for network connections to this domain initiated by a process named 'Подтверждение заказа продукции ЦАИ.exe'.
Identifies network communication initiated by Microsoft Word (WINWORD.EXE) to Discord webhooks, which could indicate an attempt to exfiltrate stolen information, such as One-Time Passwords (OTPs), often associated with phishing campaigns.
Detects data exfiltration by identifying TCP network connections over Port 53 (DNS) originating from non-standard binaries, bypassing layer 7 firewall inspections.
Detects anomalous screen capture activity associated with StealC malware. It identifies when a non-UI process creates a JPEG file within the system temporary directory followed immediately by an outbound network connection from the same process, which is indicative of the malware capturing a screenshot and staging it for exfiltration.
This rule detects the execution of cloud transfer tools such as rclone, WinSCP, Dropbox, OneDrive, or curl.exe when their command line arguments indicate the transfer of mailbox-related files (PST, OST, or temporary files with 'ts_' prefix) and include keywords like 'copy', 'sync', 'put', 'upload', or 'transfer'. The rule focuses on the causality chain to identify the actor and processes involved in such activities, which could indicate data exfiltration.
Detects use of Discord webhooks for covert C2 or data exfiltration
Correlates processes executing commands containing 'megalodon' with outbound network connections to a specific C2 IP address (216.126.225.129). This rule aims to detect data exfiltration or command and control communication associated with the Megalodon malware.
Identifies web server processes initiating network connections to the credential-stealing generate.2faplugin.org domain. This activity is indicative of a supply chain compromise targeting ShapedPlugin, where backdoored pro plugins are distributed via official channels, leading to data exfiltration.
Correlates the execution of the initial dropper script (setup.cjs) to the hardcoded C2 IPs, indicating potential compromise by the Mastra NPM malware.
This rule looks for sensitive-looking values appearing in a publicly visible Claude workflow summary on GitHub. Public summaries can be indexed and copied quickly. Revoke any exposed credentials and restrict summary visibility. Ask the person who used the computer whether they installed new software or clicked a link, and involve your security team if the answer is unclear.
Detects an administrative forwarding, redirect, BCC, or content compliance rule change when Defender for Cloud Apps identifies attributes that are uncommon for the account. UNC6508 replayed harvested credentials to access an administrator account before creating its covert exfiltration rule. The anomaly requirement increases confidence while preserving coverage for infrastructure that is not recognised as a proxy.
Detects outbound network connections to 'filev2.getsession.org', a known Miasma payload hosting and exfiltration domain. This domain has been associated with Miasma malware for command and control and data exfiltration activities.
Detects extraction of Azure Storage account keys (ListKeys) used to facilitate programmatic, static-auth data exfiltration.
Detects large data transfers occurring outside normal business hours
Targets mailbox export naming and immediate use of cloud transfer tools such as rclone, WinSCP, Dropbox, or OneDrive. The UDM rule retains principal and target context for correlation.
This rule detects suspicious bulk access and transfer behavior targeting sensitive files, which could indicate data exfiltration. It identifies scenarios where a single account accesses a large number of files, totaling a significant size, within a short timeframe. The rule specifically looks for common sensitive file types such as spreadsheets, documents, PDFs, SQL databases, and backup files. This pattern is often associated with ransomware groups performing data leak extortion without encryption.
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