Bitter APT

Bitter APT is a known hacking group that is an alternative name for APT47

Bitter APT is an advanced persistent threat that has been active since at least 2013 and continues to target organizations in various industries, including government agencies, military contractors, defense companies, telecommunications firms, financial institutions, and critical infrastructure providers. It uses a variety of tactics such as spear-phishing emails, watering hole attacks, exploiting vulnerabilities, and using social engineering to gain access to sensitive information or systems. Bitter APT is considered one of the most sophisticated threat actors in terms of its level of persistence, stealthiness, and ability to evade detection by security measures.

Techniques, tactics and practices: 

Bitter APT uses a variety of techniques such as spear-phishing emails that appear to be from trusted sources or companies in order to trick users into opening attachments, clicking on links, or downloading malware. They also use watering hole attacks where they target specific websites and inject malicious code onto them which can infect visitors\\\' computers when they visit the site. Bitter APT is known for exploiting vulnerabilities such as outdated software or operating systems to gain access to sensitive information or systems, and using social engineering tactics like impersonation of legitimate entities in order to gather more personal data from their targets. They also use stealthy techniques such as avoiding detection by security measures through various methods including encryption, obfuscation, and hiding malware within other files.