BeaverTail

Malware
17 incidents First seen 2025-12-18 Last seen 2026-10-02
Overview

BeaverTail is a malware that has both a JavaScript and C++ variant. Active since 2022, BeaverTail is capable of stealing logins from browsers and serves as a downloader for second stage payloads. BeaverTail has previously been leveraged by North Korea-affiliated actors identified as DeceptiveDevelopment or Contagious Interview. BeaverTail has been delivered to victims through code repository sites and has been embedded within malicious attachments.

Threat ecosystem
Actors Malware Campaigns CVEs
Tap a node for a quick look · double-tap to open its profile
At a glance
peak priority 170 23 techniques 1 groups use it LinuxmacOSWindows in ATT&CK since 2025-10-19 updated 2025-10-24 · v1.0
Activity by month (incidents)
2025-122026-10
Sectors targeted
cryptocurrency · 16technology · 12finance · 4government · 3defense · 1education · 1energy · 1retail · 1telecommunications · 1
Countries targeted
KP · 9DE · 6AT · 5AU · 5CH · 5GB · 5US · 5CA · 4BE · 3BR · 3CN · 3IN · 3
Origin
KP · 12JP · 4US · 2AE · 1AF · 1BD · 1
Kinds of incident
State-Sponsored & Espionage · 9Malware & Botnets · 6Supply Chain · 3Cyberattack (general) · 2Phishing & Social Engineering · 2Fraud & Crypto Theft · 1
Techniques seen in incidents
T1059.007 - JavaScript · 13T1588.001 - Malware · 8Espionage · 7T1059.006 - Python · 6Social Engineering · 4Exfiltration · 3Extortion · 3Impersonate · 3Keylogging · 3Phishing · 3Ransomware · 2Reconnaissance · 2T1059.001 - PowerShell · 2T1555.001 - Keychain · 2
Related actors
Contagious Interview · 13Lazarus Group · 3NoName057(16) · 1Transparent Tribe · 1
Related CVEs
CVE-2025-64721 · 1
ATT&CK techniques by tactic (23)
initial access T1195.001 Compromise Software Dependencies and Development Tools
execution T1059.007 JavaScript T1204.002 Malicious File
credential access T1555 Credentials from Password Stores T1555.001 Keychain T1555.003 Credentials from Web Browsers
discovery T1082 System Information Discovery T1083 File and Directory Discovery T1124 System Time Discovery T1217 Browser Information Discovery T1654 Log Enumeration
collection T1005 Data from Local System T1074.001 Local Data Staging T1560.001 Archive via Utility
command and control T1001.001 Junk Data T1071.001 Web Protocols T1105 Ingress Tool Transfer T1571 Non-Standard Port
exfiltration T1041 Exfiltration Over C2 Channel
impact T1657 Financial Theft
stealth T1027.013 Encrypted/Encoded File T1036 Masquerading T1070.004 File Deletion
Groups that use it
Contagious Interview
Incident timeline
2026-09-22
North Korean Attackers Hit 30,000 Devices and Steal $10.7m
2026-09-21
WeaselBiscuit Steals Chrome Extension Storage via 13 npm Packages
AlienVault OTX The Hacker News AlienVault OTX AlienVault OTX
2026-09-18
WeaselBiscuit Stealer Spreads via 13 npm Packages to Harvest Chrome Extension Storage
2026-07-04
North Korean Hackers Publish 108 Malicious Packages and Extensions in PolinRider Campaign
2026-07-03
North Korea-Linked npm Packages Mimic Rollup Polyfills to Steal Developer Secrets
2026-06-15
North Korean Hackers Are Turning Developer Tools Into Malware Delivery Channels
2026-04-22
North Korean hackers siphon more than $12 million from crypto users in sprawling campaign
2026-02-26
Microsoft Warns Developers of Fake Next.js Job Repos Delivering In-Memory Malware
2026-02-05
ThreatsDay Bulletin: Codespaces RCE, AsyncRAT C2, BYOVD Abuse, AI Cloud Intrusions & 15+ Stories
2026-01-21
North Korean PurpleBravo Campaign Targeted 3,136 IP Addresses via Fake Job Interviews
2025-12-18
New BeaverTail Malware Variant Linked to Lazarus Group