Arnold Chan
@slazTrusted contributorCompletionist
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7,555 detections
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Detects network traffic matching a list of known malicious domains and IP addresses observed in CommonSecurityLog events.
Detects potential exfiltration activity by identifying HTTP POST/PUT requests to known suspicious domains, including specific operator-controlled hosts and anonymous file sharing services, as well as the use of HTTP Range headers for bulk API data exfiltration.
Detects indicators of cross-site scripting (XSS) attacks aimed at stealing web session cookies. The rule covers the injection of malicious scripts into client responses, anomalous CORS preflight responses that could facilitate data exfiltration, and subsequent HTTP callbacks or beaconing containing cookie data to external endpoints.
Detects the creation of a new AWS S3 bucket followed by a large volume of data uploads (more than 200 objects) within a 2-hour window. The detection focuses on activity attributed to a single identity with limited source IP diversity, which is highly indicative of scripted data staging and potential exfiltration preparation by an unauthorized actor.
This rule monitors process command lines for identifiers related to virtual machine communication interfaces such as 'VMCI', 'AF_VSOCK', 'svm_cid', or 'vm:2'. It specifically targets both the ESET Remote Administrator (ERA) Agent and any other processes utilizing these communication mechanisms, which can be indicators of inter-process communication across virtual machine boundaries or potential hypervisor-related activity.
This rule detects command-and-control (C2) communication patterns associated with the 'soraki-proxy.workers.dev' domain, a Cloudflare Workers-hosted proxy service. Additionally, it identifies potential malicious mTLS implants by flagging non-standard TLS handshakes that use self-signed or auto-generated certificates missing standard organization (O) fields in the subject DN.
Detects network connections from Windows hosts to known IP addresses and domain names associated with the exploitation infrastructure used in CVE-2026-18577, targeting N-able N-central servers.
Detects suspicious DLL loads or file drops performed by security product processes (avp.exe, MsMpEng.exe) from directories outside of standard, trusted vendor paths. It specifically flags unsigned or invalidly signed DLLs, which is indicative of DLL sideloading techniques used to abuse security software workflows for potential privilege escalation.
This rule detects instances where LockAppHost.exe or a variation of it (likely used as a proxy) initiates processes or command-line arguments that interact with Windows services, scheduled tasks, or Windows Defender configurations. This behavior is indicative of an adversary attempting to disable security features, suppress Windows updates, or manipulate system services to evade detection.
Detects anomalous registry enumeration or modification activities targeting software uninstallation registry keys (Run/Uninstall). By monitoring for multiple subkey accesses by processes not associated with standard software management tools (like MsiExec or explorer), this rule identifies potential reconnaissance or software discovery patterns indicative of malicious activity.
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