항공·방위 산업을 표적으로 한 Lazarus 그룹의 Comebacker 변종 공격
2025-11-07 • ENKI • Lazarus Group Comebacker variant attack targeting the aerospace and defense industries •
ENKI analyzes a Lazarus Group Comebacker variant recovered from office-theme[.]com, where malicious DOCX files with VBA macros acted as droppers for a staged loader chain. The lures impersonated aerospace and defense-related organizations including Edge Group, IIT Kanpur, and Airbus, suggesting spear-phishing against sector-specific targets. The DOCX macros decrypted and dropped a loader and lure document, installed persistence through LNK and startup-folder mechanisms, and executed USOPrivate.dll through rundll32. The final Comebacker payload contacted hxxps://hiremployee[.]com over HTTPS with AES-128-CBC-protected traffic, while related infrastructure such as birancearea[.]com and a March 2025 sample showed changes in loader encryption and C2 communications.
Indicators of Compromise
| Type | Value | First Seen | Last Seen |
|---|---|---|---|
| HASH | 7e61c884ce5207839e0df7a22f08f0a… | 2025-11-07 | 2025-11-07 |
| HASH | f2b3867aa06fb38d1505b3c2b9e523d… | 2025-11-07 | 2025-11-07 |
| HASH | 96b973e577458e5b912715171070c0a… | 2025-11-07 | 2025-11-07 |
| HASH | b7d625679fbcc86510119920ffdd6d2… | 2025-11-07 | 2025-11-07 |
| HASH | 14213c013d79ea4bc8309f730e26d52… | 2025-11-07 | 2025-11-07 |
| HASH | b357b3882cf8107b1cb59015c4be3e0… | 2025-11-07 | 2025-11-07 |
| HASH | c4a5179a42d9ff2774f7f1f937086c8… | 2025-11-07 | 2025-11-07 |
| HASH | ad9c5aca9977d04c73be579199a8270… | 2025-11-07 | 2025-11-07 |
| HASH | 046caa2db6cd14509741890e971ddc8… | 2025-11-07 | 2025-11-07 |
| URL | https://birancearea.com/adminv2 | 2025-11-07 | 2025-11-07 |
| URL | https://hiremployee.com | 2025-11-07 | 2025-11-07 |
| DOMAIN | hiremployee.com | 2025-11-07 | 2025-11-07 |
| DOMAIN | birancearea.com | 2025-11-07 | 2025-11-07 |
| DOMAIN | office-theme.com | 2025-11-07 | 2025-11-07 |
| HASH | a75886b016d84c3eaacaf01a3c61e04… | 2021-01-25 | 2025-11-07 |