문서파일로 위장한 LNK 악성코드

2023-11-24 Secu I LNK malware disguised as a document file

https://stic.secui.com/main/main/threatInfo?id=189

Thumbnail for 문서파일로 위장한 LNK 악성코드

SECUi describes 2023 Kimsuky attacks in South Korea that used ZIP archives containing a decoy document and an LNK file disguised as a document to start reconnaissance malware. The LNK embeds obfuscated PowerShell, a lure document, and script modules; execution extracts BAT/VBS components, registers start.vbs under HKCU Run for persistence, and downloads RC4-encrypted payloads from attacker infrastructure. The BAT chain collects directory listings, public IP lookup data, task lists, and system information, then encrypts and uploads the results to C2. The report also notes tax, document-submission, and university-related Korean lures and C2 domains such as drives001.com, gdrive001.com, and cldservice.net.

Indicators of Compromise

Type Value First Seen Last Seen
HASH 9762d5c00cdc58e774676ab868a5928… 2023-11-24 2024-09-02
URL https://downwarding.com/v2/read… 2023-11-24 2024-08-22
URL https://bgfile.com/v2/read/get.… 2023-11-24 2024-08-22
DOMAIN downwarding.com 2023-11-24 2024-08-22
DOMAIN bgfile.com 2023-11-24 2024-08-22
URL http://ttzcloud.com/upload.php 2023-09-15 2024-08-22
DOMAIN ttzcloud.com 2023-09-15 2024-08-22
HASH d245f208d2a682f4d2c4464557973bf… 2023-09-12 2024-05-20
URL http://cldservice.net/upload.php 2023-11-24 2023-12-18
DOMAIN file.drives001.com 2023-11-24 2023-12-18
DOMAIN cldservice.net 2023-11-24 2023-12-18
DOMAIN resolver1.opendns.com 2023-05-05 2023-12-18
HASH a4c00736fa82551b45a9a71c90d0e21… 2023-11-24 2023-11-24
HASH 8673b43ac3a89dba13a9511d2219750… 2023-11-24 2023-11-24
HASH 0ea2f85e1fe3ab360bc595e7179a385… 2023-11-24 2023-11-24
HASH f6e55f4421ea27f1aea461ac6b6489b… 2023-11-24 2023-11-24
HASH daaf822e53f952de2c112c1dd8860d0… 2023-11-24 2023-11-24
HASH 4754b7aba735a6fb6e49b77db29af34… 2023-11-24 2023-11-24
HASH be59fcf56d3bc1c9a97e00574400600… 2023-11-24 2023-11-24
HASH 4e9d8f2d6bd17f71ed2a6c356deebc8… 2023-11-24 2023-11-24
HASH ec8d50b7cfd7c2b95e9ebdddc13ea38… 2023-11-24 2023-11-24
HASH e220f804878bb90b2ff36f3d479a373… 2023-11-24 2023-11-24
HASH c95536b0612d47956a2fdb49fa64ea9… 2023-11-24 2023-11-24
HASH 5de09f0281a161ae690fdcc757e3d1d… 2023-11-24 2023-11-24
HASH f60c0d12fcc3d55cb7aa027be7b3b89… 2023-11-24 2023-11-24
URL https://naver.files001.com/v2/r… 2023-11-24 2023-11-24
URL https://naver.drive001.com/v2/r… 2023-11-24 2023-11-24
URL https://naver.filedowns.net/v2/… 2023-11-24 2023-11-24
URL https://naver.filedowns.net/v2/… 2023-11-24 2023-11-24
URL https://naver.filedowns.net/v2/… 2023-11-24 2023-11-24
URL https://filecompact.com/upload.… 2023-11-24 2023-11-24
URL https://naver.xfiles001.com/v2/… 2023-11-24 2023-11-24
URL https://file.drives001.com/read… 2023-11-24 2023-11-24
URL https://naver.down-files.com/v2… 2023-11-24 2023-11-24
URL https://naver.xfiles001.com/v2/… 2023-11-24 2023-11-24
URL https://filecompact.com/list.ph… 2023-11-24 2023-11-24
URL https://naver.cloudfiles001.com… 2023-11-24 2023-11-24
URL https://file.gdrive001.com/read… 2023-11-24 2023-11-24
URL https://naver.files-download.or… 2023-11-24 2023-11-24
URL https://naver.files-download.or… 2023-11-24 2023-11-24
URL https://file.drives001.com/read… 2023-11-24 2023-11-24
URL http://cldservice.net/list.php?… 2023-11-24 2023-11-24
URL https://lafile001.com/v2/read/?… 2023-11-24 2023-11-24
URL http://file.gdrive001.com/read/… 2023-11-24 2023-11-24
DOMAIN filecompact.com 2023-11-24 2023-11-24
DOMAIN naver.files-download.org 2023-11-24 2023-11-24
DOMAIN naver.filedowns.net 2023-11-24 2023-11-24
DOMAIN naver.xfiles001.com 2023-11-24 2023-11-24
DOMAIN naver.files001.com 2023-11-24 2023-11-24
DOMAIN naver.cloudfiles001.com 2023-11-24 2023-11-24
DOMAIN lafile001.com 2023-11-24 2023-11-24
URL http://anrun.kr/movie/contents.… 2023-09-26 2023-11-24
URL http://ttzcloud.com/list.php?f=… 2023-09-15 2023-11-24
URL https://file.gdrive001.com/read… 2023-09-14 2023-11-24
DOMAIN file.gdrive001.com 2023-09-14 2023-11-24
HASH dd85c8400fb30e4d02f0159aab3c3db… 2023-09-01 2023-11-24
URL http://anrun.kr/movie/contents.… 2023-09-01 2023-11-24
DOMAIN anrun.kr 2023-09-01 2023-11-24
URL https://naver.drive001.com/v2/r… 2023-08-08 2023-11-24
DOMAIN naver.drive001.com 2023-08-08 2023-11-24
HASH c0ac380c3dcf94eef84e40ef964a662… 2023-05-05 2023-11-24
URL http://centhosting.net/upload.p… 2023-05-05 2023-11-24
URL http://centhosting.net/list.php… 2023-05-05 2023-11-24
DOMAIN centhosting.net 2023-05-05 2023-11-24
URL http://expressionkey.com/list.p… 2023-02-02 2023-11-24
URL http://expressionkey.com/upload… 2023-02-02 2023-11-24
DOMAIN naver.down-files.com 2023-02-02 2023-11-24
DOMAIN expressionkey.com 2023-02-02 2023-11-24

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