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A Quick Look at ELF Bifrose (Part 1)

Bifrose or Bifrost is a backdoor initially targeting Windows systems with a long history. First identified in the early 2000’s, it is believed a hacking group (likely BlackTech), purchased the source code or gained access… 

So Long (Go)Daddy | Tracking BlackTech Infrastructure

Summary BlackTech has built a reputation relying on (much to the delight of defenders) tech-themed domains and predictable registration patterns. Recent reporting linking malicious domains to the actor suggests these patterns may be fading, at… 

Analyzing Manjusaka Infrastructure

21 August 2022 Recently, Avast tweeted a GitHub link of indicators of compromise (IOC) linked to the Manjusaka Framework. Cisco Talos released a blog earlier this month covering the framework in great detail, so I… 

Overview of AppleSeed Dropper

02 June 2022

Summary

The Kimsuky APT Group has routinely utilized the AppleSeed Backdoor to target various entities within South Korea, mainly for the purposes of espionage.

While phishing still remains the primary vector of delivering the backdoor, over the past year, Kimsuky has gone to great lengths to disguise its attacks, utilizing numerous types of decoy files, packers, and encoding schemes.