킴수키(Kimsuky)조직, '협의 이혼 의사 확인 신청서'를 위장한 QuasarRAT 유포 중!

2023-03-15 • ESTSecurity • Kimsuky distributing QuasarRAT disguised as an application to confirm intent to divorce •

https://blog.alyac.co.kr/5103

Thumbnail for 킴수키(Kimsuky)조직, '협의 이혼 의사 확인 신청서'를 위장한 QuasarRAT 유포 중!

Kimsuky distributed a malicious Word document masquerading as an application to confirm mutual intent to divorce, using macros to install QuasarRAT. When the user enabled content, the decoy displayed a legitimate-looking divorce form while AutoOpen macro logic contacted attacker-controlled infrastructure, dropped version.ini, runps.vbs and conf.ps1, and repeatedly downloaded additional payloads before launching QuasarRAT. ESRC linked the activity to a North Korea-backed APT Smoke Screen operation and noted detections such as Trojan.Downloader.DOC.Gen, Backdoor.MSIL.Quasar.gen and Trojan.PowerShell.Agent, with C2 details withheld because the server remained reachable.

Indicators of Compromise

Type Value First Seen Last Seen
HASH 7a73f1756af7f40f51134de57907236… 2023-03-15 2023-05-24
HASH 3090318894dceeb240db3a509962812… 2023-03-15 2023-05-24
HASH 8f411a46490016ac5d126b83cee65022 2023-03-15 2023-05-24
HASH e8475fe3ac277d2eda466aaa4d42044… 2023-03-15 2023-05-24

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