Contagious Interview Actors Now Utilize JSON Storage Services for Malware Delivery

2025-11-13 NVISO

https://blog.nviso.eu/2025/11/13/contagious-interview-actors-now-utilize-json-storage-services-for-malware-delivery/

Thumbnail for Contagious Interview Actors Now Utilize JSON Storage Services for Malware Delivery

NVISO reports that DPRK-aligned Contagious Interview operators are abusing JSON Keeper, JSONsilo, npoint.io, GitLab, and GitHub to host and deliver malware through trojanized interview demo projects. The activity targets software developers across Windows, Linux, and macOS, with emphasis on cryptocurrency and Web3 roles, using fake recruiter outreach and staged coding tasks as the infection path. A base64-masked configuration value in the project points to JSON-hosted obfuscated code that resolves to BeaverTail, which steals system details, browser profiles, wallet extensions, documents, screenshots, secret files, and macOS Keychain data before fetching InvisibleFerret. The chain also includes Pastebin-based next-stage retrieval, a Tsunami component set for Defender exclusions, scheduled tasks, Python installation, and payload integrity verification, with infrastructure including 146.70.253.107, 23.254.164.156, and an offline .onion address. The use of legitimate JSON storage and code-hosting services helps the actors blend malicious delivery into normal developer workflows.

Indicators of Compromise

Type Value First Seen Last Seen
IPv4 216.126.229.166 2025-11-13 2026-04-02
IPv4 95.164.17.24 2024-07-15 2026-04-01
IPv4 66.235.175.109 2025-11-13 2026-02-26
IPv4 146.70.253.107 2025-10-10 2026-02-03
IPv4 147.124.214.129 2024-05-10 2026-02-03
IPv4 45.61.150.30 2025-11-13 2026-01-21
IPv4 165.140.86.227 2025-11-13 2026-01-21
IPv4 38.92.47.91 2025-11-13 2026-01-21
IPv4 38.92.47.151 2025-11-13 2026-01-21
IPv4 38.92.47.85 2025-11-13 2026-01-21
IPv4 66.235.168.232 2025-11-13 2026-01-21
IPv4 45.43.11.201 2025-11-13 2026-01-21
IPv4 144.172.95.226 2025-11-13 2026-01-21
IPv4 144.172.103.97 2025-11-13 2026-01-21
IPv4 45.61.133.110 2025-11-13 2026-01-21
IPv4 144.172.100.142 2025-11-13 2026-01-21
IPv4 147.124.197.138 2025-11-13 2026-01-21
IPv4 88.218.0.78 2025-10-20 2026-01-21
IPv4 23.227.202.244 2025-10-10 2026-01-21
IPv4 67.203.7.163 2024-10-23 2026-01-21
IPv4 23.106.70.154 2024-10-23 2026-01-21
IPv4 147.124.214.237 2024-05-10 2026-01-21
IPv4 147.124.214.131 2024-04-25 2026-01-21
HASH 9d9a25482e7e40e8e27fdb5a1d87a1c… 2025-11-13 2025-11-13
DOMAIN api.jsonsilo.com 2025-11-13 2025-11-13
IPv4 23.227.202.242 2025-11-13 2025-11-13
IPv4 147.124.197.149 2025-11-13 2025-11-13
IPv4 45.76.160.53 2025-11-13 2025-11-13
IPv4 23.254.164.156 2025-11-13 2025-11-13
IPv4 23.106.253.242 2025-11-13 2025-11-13
IPv4 107.189.25.109 2025-11-13 2025-11-13
IPv4 146.70.253.10 2025-11-13 2025-11-13
DOMAIN n34kr3z26f3jzp4ckmwuv5ipqyatumd… 2025-04-25 2025-11-13
IPv4 45.61.151.71 2025-04-04 2025-11-13
IPv4 45.137.213.30 2025-03-17 2025-11-13
IPv4 94.131.97.195 2025-03-17 2025-11-13
IPv4 45.61.150.31 2025-03-17 2025-11-13
IPv4 144.172.97.7 2025-03-17 2025-11-13
IPv4 172.86.84.38 2025-03-10 2025-11-13
IPv4 23.106.253.221 2025-02-07 2025-11-13
IPv4 45.128.52.14 2025-01-29 2025-11-13
IPv4 185.153.182.241 2025-01-29 2025-11-13
IPv4 5.253.43.122 2025-01-29 2025-11-13
IPv4 86.104.74.51 2024-12-03 2025-11-13
IPv4 23.106.253.215 2024-10-23 2025-11-13
IPv4 172.86.98.240 2024-09-04 2025-11-13
IPv4 23.106.253.194 2024-09-04 2025-11-13
IPv4 185.235.241.208 2024-08-13 2025-11-13
IPv4 147.124.212.146 2024-05-10 2025-11-13
IPv4 67.203.7.171 2024-05-10 2025-11-13
IPv4 147.124.212.89 2023-12-12 2025-11-13

Related Actors

Related Reports

« Back