In recent news, the Bitter Group, a Chinese-based hacker group, has been found distributing CHM malware to Chinese institutions. The CHM malware, or Compiled HTML Help File, is a type of malicious file containing malicious code. This type of malware is typically used to steal sensitive data or to launch DoS attacks.

The attacks appear to be targeted at Chinese universities and research institutes, as well as government agencies. The attacks involve an email sent to the target containing a malicious CHM file. Once the file is opened, the malware is deployed and can be used to gain access to the target’s system. The malware is able to collect a variety of information, including system information, passwords, and other sensitive data.

The malware is also able to launch DoS attacks, which can be used to disrupt the target’s system or network. Furthermore, the malware can be used to hide itself from traditional security solutions.

At this time, it is not known who is behind the Bitter Group or why they are targeting Chinese institutions. However, it is believed that the attacks may be part of an effort to steal sensitive data or disrupt the operations of the targeted institutions.

It is important for organizations to be aware of the risks posed by CHM malware, and to ensure that they have adequate security measures in place to protect against such attacks. Additionally, organizations should also be aware of the types of emails they are receiving, and to be suspicious of any emails containing suspicious files.