Arnold Chan
@slazTrusted contributorCompletionist
2 followers2,099 downloads4,327 copies51 likes25,806 views
7,544 detections
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Detects anomalous TLS traffic directed at Binance or Bybit domains where the server certificate issuer is not from a known trusted certificate authority. This behavior is indicative of a Man-in-the-Middle (MITM) proxy interception, often associated with tools like JSCeal attempting to inspect or modify encrypted traffic to financial services.
Detects the download of a JavaScript module named JSCeal, which contains code indicative of an HTTPS interception proxy. The rule looks for Node.js-based server creation code combined with cryptographic operations like keypair generation, certificate creation, and PEM conversion, excluding common legitimate JavaScript libraries and CDNs.
Detects periodic screen capture activity performed by Node.js or Electron-based processes, correlated with subsequent outbound network connections to public IP addresses within a short timeframe. This behavior is indicative of the JSCeal malware's surveillance and exfiltration module, where local reconnaissance via screenshotting is followed by data transmission.
Detects when a Node.js process initiates a low-level keyboard hook (WH_KEYBOARD_LL or WH_KEYBOARD) while running from common user-writable directories, which may indicate malicious keylogging activity by a suspicious process.
This rule detects unauthorized modifications to browser search provider settings in the Windows Registry, targeting keys associated with Chrome and Microsoft Edge search configuration. This activity is often indicative of browser hijacking or search engine redirection campaigns, such as the NinjaMare malware.
This rule detects a suspicious sequence of events where a process with a name resembling an updater (AutoUpdate.exe or au.exe) accesses a specific remote configuration file from a herokuapp.com URL, followed by the creation or modification of specific application binaries (e.g., InstaTime.exe, ffmpegsumo.dll). This pattern is indicative of a supply chain compromise or an automated software update hijacking where malicious binaries are staged to replace legitimate application components.
This rule detects IDS/IPS or vulnerability management alerts triggered by exploitation attempts targeting the Cisco IOS XR control plane, specifically related to CVE-2026-20212.
Detects outbound Telnet traffic initiating with a specific magic byte sequence ('|FF FB|') characteristic of the Fire Ant malware's command-and-control communication.
This rule detects IDS/IPS or vulnerability management alerts triggered by exploitation attempts targeting the Cisco IOS XR control plane, specifically related to CVE-2026-20212.
This rule detects potential bulk data exfiltration by monitoring for high volumes of file access events (FileAccessed, FileRead, FileModified) originating from the 'doc_helper.aspx' file-management web shell. It summarizes activity by device and user account, flagging instances where over 100 unique files are touched within a short timeframe, which is indicative of automated collection and exfiltration activities.
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