Ibrahim Saud
@tektrixIndiaCompletionist
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Detects suspicious execution of scripting hosts (wscript.exe, cscript.exe, mshta.exe) that are commonly leveraged by the Gamaredon threat group. The rule specifically flags VBScript/HTA execution originating from temporary directories and monitors for the creation of persistence via Windows Registry Run keys.
This rule monitors for patterns associated with the Gamaredon (ACTINIUM) threat group's PowerShell loaders (e.g., Ptero-family) and the Kazuar backdoor. It specifically detects indicators such as malicious PowerShell command lines, NTFS alternate data stream manipulation, and suspicious scheduled task creation.
This rule detects execution patterns associated with the Gamaredon (Shuckworm) group's Ptero-family of malware. It specifically monitors for encoded PowerShell commands, the use of Invoke-Expression, and the execution of mshta.exe or wscript.exe spawned by Office applications or email clients, which is characteristic of Gamaredon's HTML smuggling and malicious document delivery techniques.
Detects node.js executing known malicious npm lifecycle scripts (such as install-check.cjs, verify-peer.cjs, sync-peer.cjs, postinstall-run.js, and preinstall.js) often found in node_modules folders. These scripts are associated with the Polymarket Trap supply chain campaign, which leverages malicious npm hooks for initial access or malicious activity within a development environment.
Detects the Remcos RAT establishing persistence by writing its binary path (typically under %ProgramData%\Remcos\remcos.exe) to Windows registry Run keys or Explorer Run policy keys.
Detects the execution of Node.js or npm processes that reference known malicious transitive npm dependencies or typosquatted packages identified in the Polymarket Trap supply chain campaign, such as 'log-taker' and various 'thirdweb' typosquats.
Detects the creation of a 'keylogger.dat' file within the Windows APPDATA Roaming directory. This specific file path is a known artifact generated by Remcos RAT when utilizing its offline keylogger capability, which relies on the SetWindowsHookExA API with the WH_KEYBOARD_LL hook to intercept keystrokes.
Detects the behavior of the Remcos RAT watchdog process, which monitors the main malware execution. The rule identifies the creation of a specific registry marker (HKCU\SOFTWARE\{MUTEX}\WD) used by the watchdog for state tracking, combined with the malicious process spawning a target executable (svchost.exe, rmclient.exe, or fsutil.exe) from a standard Remcos installation directory.
Detects a single process reading both SSH private keys and various developer-sensitive configuration or credential files (e.g., .aws/credentials, .npmrc, .pypirc) on a single host. This behavior is consistent with infostealer activity, such as the Miasma JavaScript infostealer used in supply chain campaigns, aiming to harvest credentials from developer workstations.
Detects the Polymarket Trap / Miasma JavaScript-based infostealer attempting to access sensitive configuration files and credentials (SSH keys, AWS credentials, .npmrc, .pypirc, Docker config, and GPG keys) from a developer's workstation using node.js-related runtimes.
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