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/
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 |