원고 청탁서로 위장한 악성코드 (안보 분야 종사자 대상)

2023-01-10 Ahnlab Malware disguised as a manuscript solicitation letter targeting security-related personnel

https://asec.ahnlab.com/ko/45537/

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AhnLab ASEC observed document malware distributed to people in the security field under the guise of a manuscript solicitation letter. Opening the Word document used template injection through an external object to download and run an additional malicious macro document from attacker C2 infrastructure, while also opening a benign Korean decoy document. The follow-on script exfiltrated the user’s Downloads-folder path and installed persistence through a scheduled task, and it collected installed antivirus information. ASEC linked the C2 IP 112.175.85.243 to phishing domains previously seen in a fake Kakao login-page campaign, suggesting the same operator; listed indicators include lifehelper[.]kr paths and MD5 hashes for the downloader documents and VBS components.

Indicators of Compromise

Type Value First Seen Last Seen
IPv4 112.175.85.243 2023-01-10 2024-10-04
HASH dd954121027d662158dcad24c21d04ba 2023-01-10 2023-01-17
HASH 3fe5ce0be3ce20b0c3c9a6cd0dae4ae9 2023-01-10 2023-01-17
HASH 68e79490ed1563904791ca54c97b680a 2023-01-10 2023-01-17
HASH 2244f8798062d4cef23255836a2b4569 2023-01-10 2023-01-17
HASH 2c9d6f178f652c44873edad3ae98fff5 2023-01-10 2023-01-17
HASH f22899abfa82e34f6e59fa97847c7dfd 2023-01-10 2023-01-17
URL http://lifehelper.kr/gnuboard4/… 2023-01-10 2023-01-17
URL http://lifehelper.kr/gnuboard4/… 2023-01-10 2023-01-17
URL http://lifehelper.kr/gnuboard4/… 2023-01-10 2023-01-17
URL http://lifehelper.kr/gnuboard4/… 2023-01-10 2023-01-17
URL http://lifehelper.kr/gnuboard4/… 2023-01-10 2023-01-17
URL http://lifehelper.kr/gnuboard4/… 2023-01-10 2023-01-17
DOMAIN lifehelper.kr 2023-01-10 2023-01-17

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