김수키(Kimsuky) 에서 만든 악성코드-Terms and conditions(이용 약관).msc(2024.9.6)

2024-09-10 Sakai Kimsuky malware disguised as Terms and conditions.msc

https://wezard4u.tistory.com/429275

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The Korean analysis attributes a malicious file named Terms and conditions.msc to Kimsuky and provides hashes for the MSC sample, including SHA-256 cea22277e0d7fe38a3755bdb8baa9fe203bd54ad4d79c7068116f15a50711b09. The MSC content launches PowerShell in a hidden window and uses Invoke-WebRequest and Invoke-Expression to retrieve and run a script from hxxps://0x0(.)st/Xyl7(.)txt. The downloaded script converts hex-encoded data into bytes, writes it as vBqz.mp3 under the common documents folder, renames it to vBqz.exe, and starts it through conhost.exe without opening a new window. The technique combines an MSC lure, hidden PowerShell execution, staged payload retrieval, file-extension masquerading, and stealthy process launch behavior. Multiple security vendors detected the sample as an MSC or XML Trojan downloader, making it useful for tracking Kimsuky's use of Microsoft Management Console files as a delivery mechanism.

Indicators of Compromise

Type Value First Seen Last Seen
HASH cea22277e0d7fe38a3755bdb8baa9fe… 2024-09-10 2024-09-10
HASH f4895809cb38fa1f225340e99c05e47… 2024-09-10 2024-09-10
HASH 81d224649328a61c899be9403d1de92d 2024-09-10 2024-09-10
URL https://0x0.st/Xyl7.txt 2024-09-10 2024-09-10
DOMAIN 0x0.st 2024-08-19 2024-09-10

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