Darshan Thummar
@MightyCompletionist
1 follower12 downloads680 copies5 likes8,362 views
2,107 detections
Filters
Last updated
All Time
Detection languages
1,335
772
Categories
696
574
337
315
284
Platforms
1,363
586
192
85
85
Products / Services
1,327
297
79
39
34
MITRE Techniques
525
343
321
228
207
CVEs
1
1
IDS Classtypes
592
177
160
120
93
IDS Protocols
747
411
58
44
30
This rule detects HTTP requests originating from the Nessus vulnerability scanner. It specifically looks for the string "Nessus" (case-insensitive) within the HTTP User-Agent header of outgoing HTTP traffic from the protected network.
This rule detects HTTP connections to known paid intelligence databases. It specifically looks for hostnames containing 'silobreaker.com', 'sixgill.io', or 'cybersixgill' in HTTP traffic flowing from the home network to any destination. This could indicate an internal system or user accessing external threat intelligence platforms, which might be a normal operation for security teams but could also be an indicator of reconnaissance activity by an adversary.
This rule detects a recurring download pattern associated with Microsoft BITS (Background Intelligent Transfer Service). Specifically, it looks for HTTP traffic where the User-Agent header contains "Microsoft BITS" and triggers an alert if 10 such events occur within 3600 seconds from the same source IP address. This pattern can indicate an adversary using BITS for persistent downloads, potentially for malware delivery or command and control.
This rule detects the download of a potentially malicious browser extension in CRX format. It specifically looks for HTTP responses containing ".crx" in the URI and the string "CrOD" within the first 4 bytes of the file data, indicating a Chrome extension download. This could be an attempt to install a malicious extension for persistence or other adversarial activities.
This rule detects the use of the Sliver C2 Framework based on a specific pattern in the TLS certificate subject. It looks for the common name (CN) 'multiplayer' within the TLS certificate subject, which is a known indicator for Sliver C2 communications.
This rule detects attempts to exfiltrate clipboard data over HTTP using a POST request. It specifically looks for HTTP POST requests where the URI or content contains the string "clipboard" (case-insensitive). This behavior is indicative of malware or malicious scripts trying to steal sensitive information copied by the user.
This rule detects attempts to access the Docker TLS API on port 2376. It triggers an alert if there are 5 or more TCP SYN packets (indicating connection attempts) from a single source to the Docker TLS API port within a 60-second window. This could indicate an attacker attempting to gain unauthorized access or control over Docker containers.
This rule detects SMB authentication attempts that might be indicative of a 'Pass-the-Hash' attack (ATT&CK T1550.002). It specifically looks for NTLMSSP (NT LAN Manager Security Support Provider) traffic on TCP port 445 (SMB) where the NTLM authentication message contains a specific sequence of null bytes, which can be characteristic of a hash being passed instead of a cleartext password.
This rule detects attempts to enumerate SMB network shares. It triggers when TCP traffic is directed to port 445 (SMB) on the home network, contains the SMB protocol signature, and specifically includes the string 'NetShareEnum' (case-insensitive). A threshold of 5 occurrences within 60 seconds from the same source IP is applied to reduce false positives.
This rule detects suspicious TLS certificates that are self-signed and potentially used for Command and Control (C2) communication. Specifically, it looks for TLS certificates where both the issuer and subject country codes are 'US' and the common name (CN) in the subject field consists of 8 or more hexadecimal characters. This pattern is often observed in malware using dynamically generated self-signed certificates for C2.
Page 96 of 211