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MSC-2026-11347
Published:August 17, 2026
Updated:August 17, 2026
Exam-proctoring evasion tool bundled with a browser session-cookie stealer, disguised as a 'DOM utility and diagnostic bridge'. Payload ships in the tree and runs via bin.moidevx (bin/kalamasha-tool.js); the postinstall hook is an inert decoy. bin/chrome_cookies.ps1 copies the locked Cookies SQLite DB from every Chrome/Edge profile, strips the DPAPI prefix from Local State, calls ProtectedData::Unprotect and P/Invokes winsqlite3.dll to extract encrypted_value for .openai.com, .chatgpt.com, auth0.openai.com and auth.openai.com. bin/stealth_capture.ps1 performs GetForegroundWindow + CopyFromScreen screen capture to base64 in memory with no disk trace; bin/uia_extract.exe scrapes text from other applications' windows via UI Automation. kalamasha-tool.js:19 copies the Electron binary to SearchApp.exe to masquerade as Windows Search, hides state in %LOCALAPPDATA%\Microsoft\Windows\Diagnostics, and runs a detached windowsHide watchdog that respawns every 2s with backoff on a detected kill loop to resist proctoring software. Silently runs npm install uiohook-napi koffi --no-save at first run for global input hooking and raw FFI. No C2: stolen cookies are consumed locally.
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CVSS v4
Base Score:
5.3
Attack Vector
NETWORK
Attack Complexity
LOW
Attack Requirements
NONE
Privileges Required
LOW
User Interaction
NONE
Vulnerable System Confidentiality
LOW
Vulnerable System Integrity
LOW
Vulnerable System Availability
LOW
Subsequent System Confidentiality
NONE
Subsequent System Integrity
NONE
Subsequent System Availability
NONE
CVSS v3
Base Score:
6.3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
LOW
Integrity
LOW
Availability
LOW
Exploit Maturity
HIGH
Weakness Type (CWE)
Exposure of Sensitive Information to an Unauthorized Actor
Hidden Functionality