Detections
Explore public detection logic contributed by the community across SIEM and rule languages.
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Detects periodic heartbeat beaconing activity to the domain 'tt.yeyoujs.com' over both encrypted TLS (SNI observation on port 9443) and DNS queries. This pattern is indicative of a command-and-control (C2) channel establishing or maintaining persistence.
Detects periodic heartbeat beaconing activity to the domain 'tt.yeyoujs.com' over both encrypted TLS (SNI observation on port 9443) and DNS queries. This pattern is indicative of a command-and-control (C2) channel establishing or maintaining persistence.
This rule monitors network connections, DNS resolutions, and email URLs to detect traffic communicating with a known adversary-in-the-middle (AiTM) phishing infrastructure panel. By correlating security logs, DNS events, and email URL data against this specific indicator of compromise, it identifies potential interaction with phishing sites designed to capture credentials or session tokens.
Detects DNS queries and TLS SNI traffic originating from internal hosts directed towards a specific set of domains associated with passkey/MFA/SSO-themed vishing lures. These domains are identified as potential components of phishing campaigns designed to deceive users into disclosing authentication credentials.
This rule monitors network connections, DNS resolutions, and email URLs to detect traffic communicating with a known adversary-in-the-middle (AiTM) phishing infrastructure panel. By correlating security logs, DNS events, and email URL data against this specific indicator of compromise, it identifies potential interaction with phishing sites designed to capture credentials or session tokens.
Detects unauthorized devices or processes attempting to communicate with the Telegram Bot API (/sendMessage or /sendDocument) and monitors for credential-related terms within the request metadata. This often indicates the use of Telegram as a command-and-control (C2) channel for data exfiltration or credential theft.
Detects unauthorized devices or processes attempting to communicate with the Telegram Bot API (/sendMessage or /sendDocument) and monitors for credential-related terms within the request metadata. This often indicates the use of Telegram as a command-and-control (C2) channel for data exfiltration or credential theft.
Detects SMTP MAIL FROM/Reply-To headers, DNS queries, or TLS SNI matches for known Business Email Compromise (BEC) lookalike domains (e.g., service-nowinc.com, domainlify.net) used for phishing or spoofing organizational identities.
Detects DNS queries and TLS SNI traffic directed towards known phishing domains that mimic Brazilian financial and government portals, specifically targeting 'gerenciadorcaixa.digital', 'aapj.digital', and 'receitafederal.digital'.
This rule identifies potential command and control (C2) activity by correlating DNS over HTTPS (DoH) requests initiated by non-browser or unsigned processes with subsequent network connections to a known malicious C2 domain (gw.proxyvector.cc) within a 15-minute window.
Detects outbound HTTP POST requests to suspicious .ru domains and DNS queries for these domains, indicative of C2 beaconing activity likely associated with a supply chain compromise affecting the Pub.dev ecosystem.
This rule identifies potential command and control (C2) activity by correlating DNS over HTTPS (DoH) requests initiated by non-browser or unsigned processes with subsequent network connections to a known malicious C2 domain (gw.proxyvector.cc) within a 15-minute window.
Detects network activity associated with the ProRAM C2 infrastructure. The rule monitors for DNS resolutions, TLS SNI field matches, and specific HTTP WebSocket upgrade patterns directed towards the 'clash-verge-upgrade.com' domain.
This rule monitors for DNS queries, HTTP requests to '/cli/check', and TLS SNI traffic directed towards the domain 'coder-infra.com', which is associated with a suspected compromise of a Coder registry.
Detects network activity (TCP, DNS, and HTTP) directed towards a known rogue infrastructure IP identified in a supply chain compromise affecting the Coder registry. The rule alerts on attempts to resolve or communicate with this infrastructure to download backdoored Terraform modules or interact with malicious resources.
Detects network activity (TCP, DNS, and HTTP) directed towards a known rogue infrastructure IP identified in a supply chain compromise affecting the Coder registry. The rule alerts on attempts to resolve or communicate with this infrastructure to download backdoored Terraform modules or interact with malicious resources.
This rule detects network connections or DNS queries to known phishing domains (typosquatted Microsoft login domains), DeadDrop Resolver domains, and suspicious HTML payloads served from common CDN/package hosting sites (e.g., unpkg.com, npmmirror.com, cdn.jsdelivr.net, yarnpkg.com). These patterns are indicative of initial access attempts via phishing or the secondary stage of malware C2 communication.
Detects network activity (HTTP, TLS SNI, and DNS) associated with the domain 'noht1ng.top', which is linked to the GRAYRABBIT malware utilized by the threat actor UNC3569.
Detects network activity (HTTP, TLS SNI, and DNS) associated with the domain 'noht1ng.top', which is linked to the GRAYRABBIT malware utilized by the threat actor UNC3569.
Detects DNS queries originating from an internal host to 'mail.uaiubifas.top', which is associated with GRAYRABBIT command-and-control (C2) activity.
This rule detects network communication (via DNS queries, web logs, or device network events) with a list of known malicious domains associated with Command and Control (C2) activity.
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