Larva-25010 – Analysis on the APT Down Threat Actor’s PC
This report covers the seven posts on the breach analysis of APT Down, which were published in “Threat Notes” of AhnLab TIP after the release of the “APT Down: the North Korea Files” report, along with additional analysis. Post on Aug 12, 2025, “APT DOWN – Analysis of Korean
Case of Larva-25004 Group (Related to Kimsuky) Exploiting Additional Certificate – Malware Signed with Nexaweb Certificate
AhnLab SEcurity intelligence Center (ASEC) has discovered malware signed with the certification of Nexaweb Inc. by investigating a file with the same characteristics as the one signed with a Korean company’s certificate. These malware samples have been reported by other security companies about the activities of the Kimsuky group.

