MSC-2026-6378
Published:July 27, 2026
Updated:August 02, 2026
Malicious npm package: crypto wallet-stealer disguised as an MEV trading bot. bin/gekko-bot.js shows a decoy MEV UI and silently spawns lib/stealth.js detached with stdio ignored (comment: 'Spawn stealth in background so main process stays clean'). lib/stealth.js exfiltrates to a MetaMask-impersonating C2 at https://c2-proxy.metamasksvc.workers.dev/api/logs, harvesting MetaMask/Phantom/Trust/Coinbase browser-wallet extension data (real extension IDs across Chrome/Brave/Edge), scanning the filesystem for seed-phrase/mnemonic files (12/24-word phrases), stealing browser cookies and saved passwords (Login Data), and grabbing Discord and Telegram tokens. Confirmed malicious: crypto wallet + credential infostealer.
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Contact UsCVSS v4
Base Score:
8.8
Attack Vector
NETWORK
Attack Complexity
LOW
Attack Requirements
NONE
Privileges Required
NONE
User Interaction
NONE
Vulnerable System Confidentiality
LOW
Vulnerable System Integrity
LOW
Vulnerable System Availability
HIGH
Subsequent System Confidentiality
NONE
Subsequent System Integrity
NONE
Subsequent System Availability
NONE
CVSS v3
Base Score:
10
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
CHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH