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From Endpoint to Funhouse: Evolution of Ransomware Families and Kimsuky-Linked Distribution Cases

1. Overview  AhnLab SEcurity intelligence Center (ASEC) recently identified a case in which the Kimsuky group ultimately distributed the Funhouse ransomware via a malicious Hangul document that was disguised as a resume. The Funhouse ransomware was identified as a variant of previously disclosed endpoint ransomware, and the tools used in this attack—such as Quasar RAT—as […]

I just trusted the security certificate prompt… Beware of the LegionLoader malware being distributed via the ClickFix method

The AhnLab SEcurity intelligence Center (ASEC) recently identified the LegionLoader malware, which is currently being distributed via the ClickFix method. There are two main distribution methods identified so far; both involve tricking users into visiting a malicious URL and then prompting them to directly execute malicious PowerShell commands through a fake Cloudflare CAPTCHA screen.   […]

Detection and Removal of the Syslogk Rootkit in a Linux Environment

1. Overview The AhnLab SEcurity intelligence Center (ASEC) continuously monitors various threats targeting Linux environments. Techniques that modify the Linux kernel to conceal malware and signs of compromise have been used for a long time, and Syslogk is one such rootkit that operates in this manner. This document provides an analysis of the key features […]

Guest at Midnight: Analysis of EndPoint (Midnight)

Summary EndPoint is a ransomware variant formerly known as Midnight, which is believed to be built on the Babuk ransomware framework. It targets not only Windows environments, but also ESXi and NAS environments, and uses a double extortion method that combines file encryption with Data exfiltration threats. Overview Since the Babuk source code leak, several […]
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