Lazarus APT’s Operation Interception Uses Signed Binary

2022-12-20 K7Security Labs

https://labs.k7computing.com/index.php/lazarus-apts-operation-interception-uses-signed-binary/

Thumbnail for Lazarus APT’s Operation Interception Uses Signed Binary

K7 Labs analyzed a Lazarus Operation In(ter)ception macOS sample that used a revoked signed fat binary to target users with a Coinbase job-vacancy lure. The malware drops a Coinbase-themed PDF, FinderFontsUpdater.app, a downloader named safarifontsagent, and a zero-byte Finder file under ~/Library/Fonts, then persists via a LaunchAgent named iTunes_trush. The safarifontsagent component gathers host details such as macOS version and CPU information and appends them to requests to the defanged C2 hxxps(:)//concrecapital(.)com. The C2 was unavailable during analysis, but K7 identified the parent malware hash 4a7a1626b6baf8c917945b8fc414c8b9 and documented the staged download flow used to retrieve the next payload.

Indicators of Compromise

Type Value First Seen Last Seen
DOMAIN concrecapital.com 2022-09-26 2023-10-04
HASH 4a7a1626b6baf8c917945b8fc414c8b9 2022-12-20 2022-12-20
URL https://concrecapital.com 2022-12-20 2022-12-20

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