ALERT: North Korean hackers targeting South Korea with RokRat Trojan

A North Korean hacking group has been found deploying the RokRat Trojan in a new spear-phishing campaign targeting the South Korean government. Attributing the attack to APT37 aka Starcruft, Ricochet Chollima, or Reaper, Malwarebytes said it identified a malicious document last December that, whe...

Retrohunting APT37: North Korean APT used VBA self decode technique to inject RokRat

This post was authored by Hossein Jazi On December 7 2020 we identified a malicious document uploaded to Virus Total which was purporting to be a meeting request likely used to target the government of South Korea. The meeting date mentioned in the document was 23 Jan 2020, which aligns with the...

Powerglot - Encodes Offensive Powershell Scripts Using Polyglots

Powerglot encodes several kind of scripts using polyglots, for example, offensive powershell scripts. It is not needed a loader to run the payload. In red-team exercises or offensive tasks, masking of payloads is usually done by using steganography, especially to avoid network level protections,...

APT37 (Reaper): The Overlooked North Korean Actor

On Feb. 2, 2018, we published a blog detailing the use of an Adobe Flash zero-day vulnerability CVE-2018-4878 by a suspected North Korean cyber espionage group that we now track as APT37 Reaper. Our analysis of APT37’s recent activity reveals that the group’s operations are expanding in scope and...