Daniel Jeremiah
@daniyyellUnited KingdomTrusted contributorCompletionist
8 followers4,600 downloads2,430 copies68 likes128,306 views
978 detections
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Detects potential web server remote code execution through suspicious child processes launched by PHP, FastCGI, Apache, and IIS workers. Identifies reverse shells, encoded commands, payload retrieval, reconnaissance, and temporary PHP execution.
Identifies available cross-process memory and thread manipulation telemetry events in DeviceEvents, tracking actions such as remote thread creation, virtual memory allocation, and process hollowing indicators before constructing process injection correlations.
Detects backup service processes writing server-side scripts into web-accessible directories, indicating potential web shell deployment after application compromise.
Detects NTDSUtil commands associated with Active Directory database export, installation media preparation, and snapshot creation, which may facilitate offline credential extraction.
Correlates internet-origin executable creation with subsequent execution by Windows shell processes using matching device, file path and SHA1 hash within a five-minute timeframe.
Detects AppInit DLL registry modifications referencing DLLs located in user-writable directories (such as AppData, Temp, Users\Public, or Downloads), which may indicate adversary persistence or process injection configuration.
Detects AI coding assistants and agents (such as Copilot, Cursor, Claude Code, etc.) spawning command-line interpreters (PowerShell, CMD, Node, Bun, Deno) with potential API keys, tokens, or credentials exposed in the process command line.
Detects service-initiated processes using cryptocurrency mining algorithms, pool configurations, or miner-specific execution parameters.
Detects indicators of the Miasma worm compromise on Windows and macOS systems. This includes the execution of malicious Spectral CLI payloads from npm npx cache directories, the staging and execution of sync.js payloads, the creation of Miasma-specific lock files and Cryptnet cache artifacts, and persistence established via Windows Registry Run keys.
Detects the execution of the Stoplight Spectral CLI tool from within the temporary npm/npx cache directory structure on Windows endpoints. This behavior is associated with supply-chain attacks, where malicious packages exploit npx cache paths to execute unauthorized code. The rule accounts for both fixed cache identifiers observed in specific campaigns and generalized paths used by npx, while excluding benign Playwright test executions.
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