Malware-laced npm packages used to target Discord users

Threat actors used multiple npm packages to target Discord users with malware designed to steal their payment card data.

A malicious campaign targeting Discord users leverages multiple npm packages to deliver malware that steals their payment card information, Kaspersky researchers warn.

The malicious code hidden in the packages, and tracked as Lofy Stealer, is a modified version of an open-source token logger called Volt Stealer,

“The Python malware is a modified version of an open-source token logger called Volt Stealer. It is intended to steal Discord tokens from infected machines, along with the victim’s IP address, and upload them via HTTP.” reads the analysis published by Kaspersky.

The malicious code can detect when a user logs in, change email or password, enable/disable multi-factor authentication (MFA) and add new payment methods, including complete bank card details. The harvested data are uploaded to the remote endpoint whose address is hardcoded (e.g., life.polarlabs.repl[.]co, sock.polarlabs.repl[.]co, idk.polarlabs.repl[.]co).

Below is the timeline of uploaded malicious packages, which include the small-sm, pern-valids, lifeculer, or proc-title malicious npm modules:

Package name	Version	Timestamp (UTC)
small-sm	8.2.0	2022-07-17 20:28:29
small-sm	4.2.0	2022-07-17 19:47:56
small-sm	4.0.0	2022-07-17 19:43:57
small-sm	1.1.0	2022-06-18 16:19:47
small-sm	1.0.9	2022-06-17 12:23:33
small-sm	1.0.8	2022-06-17 12:22:31
small-sm	1.0.7	2022-06-17 03:36:45
small-sm	1.0.5	2022-06-17 03:31:40
pern-valids	1.0.3	2022-06-17 03:19:45
pern-valids	1.0.2	2022-06-17 03:12:03
lifeculer	0.0.1	2022-06-17 02:50:34
proc-title	1.0.3	2022-03-04 05:43:31
proc-title	1.0.2	2022-03-04 05:29:58

Once harvested, this data is uploaded to one of several Replit-hosted instances whose addresses are hard-coded within the malware (e.g., life.polarlabs.repl[.]co, sock.polarlabs.repl[.]co, idk.polarlabs.repl[.]co).

Kaspersky states that they are constantly monitoring the updates to repositories to rapidly detect all new malicious packages.

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Pierluigi Paganini

(SecurityAffairs – hacking, Discord)

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