북한 김수키(Kimsuky) 한미 군사 동맹 주제로 만든 악성코드-Update Schedule_INVITATION - 250625 UNC Ambassador_s Roundtable.zip(2025.6.11)

2025-08-29 Sakai North Korean Kimsuky Malware Using a U.S.-South Korea Military Alliance Theme: Update Schedule_INVITATION - 250625 UNC Ambassador’s Roundtable.zip (2025.6.11)

https://wezard4u.tistory.com/429583

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Kimsuky activity is described using a password-protected ZIP containing a PDF-themed LNK named Update Schedule_INVITATION - 250625 UNC Ambassador's Roundtable.pdf.lnk. The lure impersonated a United Nations Command ambassador roundtable invitation and was reportedly sent from a Gmail account to a southern European foreign ministry target. Execution decodes embedded Base64 PowerShell, downloads a decoy PDF and additional scripts from raw.githubusercontent.com/landjhon/tokula, and writes components such as chrome.ps1, temp.ps1, and system_first.ps1 under temporary and AppData paths. Persistence is established with a hidden scheduled task that starts after five minutes and repeats every 30 minutes, running PowerShell with hidden, no-profile, non-interactive, and execution-policy-bypass flags.

Indicators of Compromise

Type Value First Seen Last Seen
HASH 96ad2f7ad615d80fc37678ba3e4193c… 2025-08-29 2025-08-29
HASH 5648d0e3c8baa6ae955fa5441ab8fdb… 2025-08-29 2025-08-29
DOMAIN bas2.su 2025-08-29 2025-08-29
HASH 9f5460850a3b5b53568cd450e834069… 2025-08-18 2025-08-29
HASH 488570af25f908e907c9732aae632b0f 2025-08-18 2025-08-29
HASH bca4cac80c436e813d93eba1b25257d0 2025-08-18 2025-08-29
HASH 9c5964753f8092a98f414a97cfb02cb… 2025-08-18 2025-08-29
EMAIL [email protected] 2025-08-18 2025-08-29

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