Lazarus武器库更新:Andariel近期攻击样本分析

2022-04-28 • Qianxin • Lazarus weapon library update: Analysis of recent Andariel attack samples •

https://mp.weixin.qq.com/s/QfbzuIKUPTXE4GdpBMsGbQ

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QiAnXin RedDrip analyzed a set of PE samples attributed by code similarity to Lazarus APT's Andariel sub-group, with activity beginning at least in February 2022 based on VirusTotal submission times. The samples included loaders that decrypted and memory-loaded backdoors or browser password stealers, and Go-based downloaders that collected host details, persisted through scheduled tasks or startup links, and fetched second-stage PE payloads. Reported infrastructure included 109.248.144.155 on ports 8443 and 8080, mail.usengineergroup.com resolving to 109.248.144.136, and additional PHP paths used for C2 communication. The backdoors used DES-decrypted C2 strings and traffic-like markers similar to previously reported Andariel tooling, while the Go downloader's base64-delimited host profiling matched earlier Lazarus downloader tradecraft. The report matters because it shows Andariel continuing to refresh its malware library, including Go malware likely chosen to reduce detection, while preserving recognizable command, configuration, and C2 patterns.

Indicators of Compromise

Type Value First Seen Last Seen
HASH b9af4660da00c7fa975910d0a19fda0… 2022-04-28 2024-07-25
HASH f67ee77d6129bd1bcd5d856c0fc5314… 2022-04-28 2024-07-25
HASH 38491f48d0cbaab7305b5ddca64ba41… 2022-04-28 2023-02-10
HASH a3b7e88d998078cfd8cdf37fa5454c4… 2022-04-28 2023-02-10
HASH 672ec8899b8ee513dbfc4590440a610… 2022-04-28 2023-02-10
HASH 9d6de05f9a3e62044ad9ae66111308c… 2022-04-28 2023-02-10
HASH 863b707873f7d653911e46885e26138… 2022-04-28 2023-02-10
HASH 655aa64860f1655081489cf85b77f72… 2022-04-28 2023-02-10
HASH f6375c5276d1178a2a0fe1a16c5668c… 2022-04-28 2023-02-10
HASH f1576627e8130e6d5fde0dbe3dffcc8… 2022-04-28 2023-02-10
HASH c92c1f3e77a1876086ce530e87aa9c1… 2022-04-28 2023-02-10
HASH 5ad106e333de056eac78403b033b89c… 2022-04-28 2023-02-10
HASH 6b7f566889b80d1dba4f92d5e2fb2f5… 2022-04-28 2023-02-10
IPv4 155.94.210.11 2022-04-28 2022-09-08
DOMAIN mail.usengineergroup.com 2022-04-28 2022-05-12
IPv4 193.56.28.32 2022-04-28 2022-04-28
IPv4 45.57.245.17 2022-04-28 2022-04-28
IPv4 109.248.144.155 2022-04-28 2022-04-28
IPv4 109.248.144.136 2022-04-28 2022-04-28

Related Actors

First seen: Jul 2017
Last seen: Sep 2026

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