Darshan Thummar
@MightyCompletionist
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2,107 detections
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This rule detects attempts at Server-Side Template Injection (SSTI) by looking for specific patterns in HTTP URI requests. It triggers an alert if the URI contains sequences like `{{.*}}` or `${.*}`, which are commonly used in various template engines to inject and execute code.
This rule detects attempts to execute setuid binaries via a web shell by looking for the string "chmod+s" in HTTP URI requests. This indicates an attacker trying to set the SUID bit on a file, which is a common technique for privilege escalation on Linux/Unix systems.
This rule detects Wake-on-LAN (WoL) magic packets. WoL is a network standard that allows a computer to be turned on or woken up by a network message. While legitimate, adversaries can use WoL to activate compromised systems (implants) for command and control or other malicious activities, especially if the system was previously shut down to evade detection.
This rule detects Telnet login attempts using the default credential 'admin'. It specifically looks for the string 'admin' (case-insensitive) in Telnet traffic flowing to the server. A threshold of 5 attempts within 60 seconds from the same source IP triggers the alert, indicating a potential brute-force or credential stuffing attack against Telnet services.
This rule detects the download of a file that appears to be an Office document template designed for remote template injection. It specifically looks for HTTP responses containing the strings "[Content_Types].xml" and "attachedTemplate" (case-insensitive) within the file data, which are indicators of a malicious Office document attempting to load a remote template.
Remote AT Scheduled Job Creation
Suricata
This rule detects attempts to create scheduled jobs remotely using the 'atsvc' service, typically associated with the Windows Task Scheduler. It specifically looks for TCP traffic on port 445 (SMB) containing the string 'atsvc' in an established flow to the home network. This activity can be indicative of an adversary establishing persistence or executing code remotely.
This rule detects attempts to access browser profile files, specifically looking for 'AppData' and 'Bookmarks' content, on a network share via SMB. This could indicate an adversary attempting to discover sensitive user data.
MFA OTP Phishing Page Detected
Suricata
This rule detects potential MFA OTP phishing pages by inspecting HTTP URIs for the presence of both 'verify' and 'otp' keywords, case-insensitively. This combination in a URI is indicative of a page designed to trick users into submitting their One-Time Passwords (OTPs) for multi-factor authentication.
Havoc C2 Agent Beacon Detected
Suricata
This rule detects beaconing activity associated with the Havoc C2 agent. It specifically looks for HTTP POST requests to the '/login' URI, with a User-Agent header of 'Mozilla/5.0', and a data size between 101 and 499 bytes. A threshold of 10 such events within 60 seconds from the same source IP triggers the alert, indicating potential command and control communication.
This rule detects potential video stream exfiltration over HTTP POST. It specifically looks for HTTP POST requests with a large payload size (greater than 100,000 bytes) and the byte sequence '|52 49 46 46|' at the beginning of the file data, which corresponds to the 'RIFF' header commonly found in multimedia file formats like AVI and WAV. This combination suggests an attempt to upload or exfiltrate video or audio data.
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