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Threatlabz Research

March 21, 2023 21 Min read

The Unintentional Leak: A glimpse into the attack vectors of APT37

Summary At Zscaler ThreatLabz, we have been closely monitoring the tools, techniques and procedures (TTPs) of APT37 (also known as ScarCruft or Temp.Reaper) - a North Korea-based advanced persistent threat actor. This threat actor has been very active in February and March 2023 targeting individuals in various South Korean organizations. Duri...

Ransomware hacker

Ransomware

December 20, 2022 5 Min read

Nokoyawa Ransomware: Rust or Bust

Key Points Nokoyawa is a 64-bit Windows-based ransomware family that emerged in February 2022 The threat group behind Nokoyawa performs double extortion ransomware attacks: exfiltrating sensitive information from organizations, followed by file encryption and a ransom payment demand Nokoyawa was initially written in the C programming lang...

ThreatLabz State of Encrypted Attacks 2022 Report exposes hidden threats

Stop Cyberattacks

December 14, 2022 5 Min read

Spoiler: New ThreatLabz Report Reveals Over 85% of Attacks Are Encrypted

Once upon a time, encrypted traffic was considered the safe, secure option for browsing and doing business online. Going back nine years to December 2013, the Google Transparency Report shows just 48% of worldwide web traffic was encrypted. Flash forward to today, and the volume of encrypted web traffic tracked by Google is up to 95%. However, the ...