SlowMist|Oct 27, 2026 10:51
🚨 Threat Intelligence | Udesk Loads Malicious JS to Steal Data and Alter Deposit Addresses
@SlowMist_Team recently detected an attack involving malicious code injected into scripts associated with the #Udesk customer service system during routine threat intelligence investigations. We obtained and analyzed two #JavaScript samples to trace how the malicious code was loaded into webpages and executed.
🔍 Further analysis revealed two key malicious behaviors:
🔹 The malicious script collects cookies, localStorage, sessionStorage, and sensitive information submitted through forms and authentication requests, potentially exposing user sessions and account credentials.
🔹 The script replaces deposit addresses displayed on specific websites and tampers with clipboard contents, potentially redirecting deposits to substituted recipient addresses.
MistEye (http://misteye.io), SlowMist’s Web3 threat intelligence system, promptly disseminated the relevant risk information through its intelligence push and customer alert channels.🫡
🛡️ Recommendations:
Stop serving compromised scripts and restore trusted versions. Investigate data exfiltration records, revoke potentially exposed sessions, and rotate potentially exposed credentials from a clean environment. Independently verify deposit addresses and transaction records through trusted channels.
Read the full analysis 👇
https://slowmist.medium.com/threat-intelligence-udesk-loads-malicious-js-to-steal-data-and-alter-transfer-addresses-157f331a5b8b
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