Detections
Explore public detection logic contributed by the community across SIEM and rule languages.
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This rule detects outbound POST requests to the Telegram Bot API (api.telegram.org) originating from internal network hosts. The detection specifically looks for requests containing the 'sendMessage' path, which is characteristic of bots transmitting stolen data (such as credentials) or command-and-control communication. It focuses on traffic initiated by common command-line tools like 'python-requests' or 'curl', which are frequently abused by automated malware scripts.
Detects HTTP GET requests to known malicious infrastructure used in SEO poisoning campaigns to distribute the Bumblebee malware loader. The rule monitors for specific URL paths and hostnames associated with lookalike domains delivering trojanized MSI files.
Detects abnormally long DNS queries characterized by repetitive alphanumeric patterns, which may indicate potential DNS tunneling activity used for C2 communication or data exfiltration. The rule flags DNS requests exceeding 60 characters with repeating label structures.
Malvertising loader delivering CastleStealer via malicious Google Ads
Photo-themed ZIP phishing campaign dropping a Node.js implant
Stealthy backdoor MLTBackdoor linked to KongTuke ClickFix and ModeloRAT campaigns
Lightweight remote access trojan deployed in recruiter-themed social engineering
Cloud extortion group exploiting exposed credentials and storage
Latin American banking trojan using DLL side-loading and overlay attacks
Banking trojan and loader using malicious Office macro delivery
Form-grabbing and credential stealing malware-as-a-service
Form-grabbing and credential stealing malware-as-a-service
Banking trojan and loader using malicious Office macro delivery
Credential and browser data stealer distributed via OXLOADER campaigns
Credential and browser data stealer distributed via OXLOADER campaigns
Detects HTTP traffic initiating a WebSocket protocol upgrade with a specific 'binary' subprotocol header, characteristic of the Brickstorm backdoor used by the UNC5221 threat actor for command and control (C2) communication.
Detects HTTP traffic destined for the 1rpc.io Ethereum node gateway containing 'eth_call' in the request body, which is indicative of EtherRAT malware using blockchain infrastructure for command and control (C2) resolution.
Detects network traffic over SMB targeting the SYSVOL or NETLOGON network shares that includes the transfer or reference of common executable file extensions. This behavior is indicative of an adversary attempting to stage malicious payloads for deployment via Group Policy Objects (GPOs), a common method for lateral movement and persistence.
Detects anomalous HTTP POST requests to the '/V1/Update/GetUpdate' endpoint on an MSSQL-hosted application, which is associated with malicious activity linked to the OceanLotus (APT32) threat actor group, specifically the Blazing Furnace campaign.
This rule detects network traffic directed at 'goldsky.arweave.net', a domain known to be used by the TukTuk malware as a dead-drop resolver. Adversaries often use legitimate web services like Arweave to host command-and-control (C2) configuration data, such as secondary C2 IP addresses or domains, allowing them to redirect infected hosts to backend infrastructure while masking the traffic as legitimate web communication.
Detects outbound HTTP PUT requests to 'filen.io', which has been associated with command-and-control (C2) communication for the PRISMEX malware used by the threat actor APT28 (also known as Pawn Storm/Fancy Bear).
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