Detections
Explore public detection logic contributed by the community across SIEM and rule languages.
5,879 detections
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Detects instances where internal devices access the 3BB sales portal (agent.3bb.co.th) while demonstrating signs of compromise. The rule correlates the portal access with recent network activity involving identified MeshCentral attacker infrastructure (ayuthayatech.com or 92.63.180.133) and further filters for behavioral anomalies such as off-hours access, the use of non-standard browser processes, or the use of unexpected service accounts.
Detects instances where internal devices access the 3BB sales portal (agent.3bb.co.th) while demonstrating signs of compromise. The rule correlates the portal access with recent network activity involving identified MeshCentral attacker infrastructure (ayuthayatech.com or 92.63.180.133) and further filters for behavioral anomalies such as off-hours access, the use of non-standard browser processes, or the use of unexpected service accounts.
Detects instances where internal devices access the 3BB sales portal (agent.3bb.co.th) while demonstrating signs of compromise. The rule correlates the portal access with recent network activity involving identified MeshCentral attacker infrastructure (ayuthayatech.com or 92.63.180.133) and further filters for behavioral anomalies such as off-hours access, the use of non-standard browser processes, or the use of unexpected service accounts.
Detects execution of the JITTERLY Linux backdoor masquerading as 'configd' (with its -nodel fallback flag) and/or beaconing to its hardcoded C2 domain (s2.981666.xyz:8082), matching Red Heron's observed tradecraft.
Detects execution of the JITTERLY Linux backdoor masquerading as 'configd' (with its -nodel fallback flag) and/or beaconing to its hardcoded C2 domain (s2.981666.xyz:8082), matching Red Heron's observed tradecraft.
Detects network activity communicating with Google Drive domains (drive.google.com and www.googleapis.com). This rule monitors outbound traffic, which may indicate the use of Google Drive as a command-and-control (C2) channel or for unauthorized data exfiltration.
Detects network connection attempts to specific external domains associated with suspicious JavaScript payloads. The rule filters for specific file paths (e.g., mpackage.js, bsc-loader.js) linked to known malicious or suspicious URL patterns on cdn.claritydelivr.com, rcrsinnovations.com, konverto.in, and cdn.api-middle-connect.com, which may indicate C2 beaconing or malware infection.
This rule detects network traffic (DNS, TLS, HTTP, and TCP) originating from internal assets to known infrastructure associated with the QTFY proxy botnet/C2 framework. It identifies communication with specific C2 domains, proxy management systems, and associated malicious IP ranges.
This rule detects potentially malicious behavior associated with Microsoft Office applications, such as Word, initiating suspicious WebDAV network connections, dropping executable or sensitive files, or spawning known LOLBAS processes (rundll32, explorer, regsvr32) from suspicious directories like Temp or WebDAV paths. It also includes a blocklist for known malicious file hashes associated with these patterns.
Detects periodic outbound network connections from internal hosts to external networks, consistent with command-and-control beaconing behavior often observed in malware like BabylonRAT.
Detects execution, file writing, or network activity associated with the process named 'Stella_Gary', which may indicate the retrieval or use of malicious plugin modules.
Detects HTTP response body content indicating the activation of a FlashProxy residential proxy by the GhostCode C2 harvester, based on geoip API responses.
This rule detects network activity associated with GhostCode phishing campaigns. It monitors for suspicious TLS SNI fields and HTTP Host headers matching known device-code phishing subdomain patterns (e.g., [service]-access-[8-chars].[domain]). Additionally, it detects requests to specific known malicious hostnames and high-entropy URI paths indicative of phishing kit redirects.
This rule detects potential BabylonRAT C2 beaconing activity by monitoring for recurring outbound HTTP GET requests using a 'Firefox' User-Agent string on non-standard HTTP ports. The threshold mechanism specifically flags repeated connections within a short time frame, which is characteristic of malware beaconing behavior.
Detects outbound HTTP requests to known Kimsuky command and control (C2) infrastructure associated with the Stella_Gary campaign. The rule monitors for specific URI patterns ('/unicorn/mort.php' or '/unicorn/uni.txt') commonly used by this threat actor for beaconing.
Detects outbound HTTP requests to known Kimsuky command and control (C2) infrastructure associated with the Stella_Gary campaign. The rule monitors for specific URI patterns ('/unicorn/mort.php' or '/unicorn/uni.txt') commonly used by this threat actor for beaconing.
Detects HTTP beaconing activity associated with the Kimsuky threat group (Stella_Gary), specifically identifying requests to the /unicorn/ path. This pattern is characteristic of their C2 communication mechanism, which masquerades as legitimate browsing.
Detects HTTP beaconing activity associated with the Kimsuky threat group (Stella_Gary), specifically identifying requests to the /unicorn/ path. This pattern is characteristic of their C2 communication mechanism, which masquerades as legitimate browsing.
Detects HTTP beaconing activity associated with the Kimsuky threat group (Stella_Gary), specifically identifying requests to the /unicorn/ path. This pattern is characteristic of their C2 communication mechanism, which masquerades as legitimate browsing.
Detects established network connections to a known Kimsuky-associated infrastructure (107.172.249.140) on port 443. The rule filters out standard TLS handshakes by inspecting initial packet content, targeting non-standard or custom-protocol traffic, and limits alerts to once per hour per source host to reduce noise.
Detects established network connections to a known Kimsuky-associated infrastructure (107.172.249.140) on port 443. The rule filters out standard TLS handshakes by inspecting initial packet content, targeting non-standard or custom-protocol traffic, and limits alerts to once per hour per source host to reduce noise.
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