Ibrahim Saud
@tektrixIndiaCompletionist
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Detects potential exploitation attempts against Flowise by monitoring for suspicious child process creation. The rule flags Node.js processes spawned by Flowise that utilize case-insensitive command-line bypass patterns or reference suspicious environment variables, which may indicate an attempt to override security configurations through environment variable manipulation (e.g., node_options).
Detects the use of 7za to extract archives into the Avast Software directory, a behavior observed in Pay2Key ransomware campaigns to perform DLL hijacking for execution, persistence, or privilege escalation.
Detects the execution or creation of files named GT_NET.exe or Gt_net.exe, which are associated with the Grixba ransomware (Play Ransomware group). The rule also identifies files that masquerade as SentinelOne by utilizing SentinelOne-related product, company, or description metadata but are located outside of the legitimate SentinelOne installation directory.
This rule detects process execution where the command line contains specific strings commonly associated with process debugging, environment analysis, or exception handling (e.g., 'RtlGetCurrentPeb', 'timeBeginPeriod', 'gcstoptheworld', 'trace/breakpoint trap'). These artifacts are frequently observed in security research tools, malware analysis frameworks, or during the development of exploit payloads designed to interact with process memory or handle execution flow interruptions.
Detects execution of the 'fsutil' command with 'setZeroData' parameters in conjunction with a ping to 127.0.0.2. This pattern is commonly associated with malicious activities involving data manipulation or potential preparation for disk-level operations, as 'fsutil setZeroData' can be used to set a range of a file to zeros.
Detects modifications to the Windows Registry 'shutdownwithoutlogon' value within the 'Policies\System' key. This setting controls whether the 'Shut Down' option is available on the Windows logon screen. Adversaries may modify this to impede access to system power controls or as part of a configuration hardening/persistence tactic.
This rule detects potentially malicious attempts to escape a container or manipulate the host filesystem using the 'docker cp' command. It identifies commands that contain directory traversal patterns (e.g., '../', '..\') or direct references to the host filesystem via '/proc/self/root'.
Detects instances where the RustDesk remote access tool spawns suspicious child processes, such as command shells, scripting interpreters, or system administrative utilities. This pattern is often indicative of an adversary abusing legitimate remote access software to execute arbitrary commands, perform discovery, or maintain interactive control over a host.
This rule monitors for network connections that occur over non-standard ports (STUN, MQTT) or to specific suspicious IP addresses and domains, while excluding known legitimate user-facing applications. The detection aims to identify potentially malicious command and control (C2) communication or unauthorized network activity performed by non-standard processes.
Detects signs of HTTP request smuggling attempts targeting nghttpx or similar proxies. The rule monitors for a specific poisoning precondition where an HTTP/1.1 Upgrade request contains both an 'Upgrade' header and a 'Content-Length' header, which can be leveraged to desynchronize the connection and smuggle subsequent requests (e.g., GET /poisoned).
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