Remcos

Fileless Remcos RAT Malware Delivery

The ASEC analysis team identified that Remcos RAT malware is being distributed through malicious macros in Excel files. As for the malware, the team introduced it in detail in the post linked below this text. While the method of coming into the system through spam mails is the same as before, it should be noted that the Remcos RAT malware is ultimately delivered filelessly after going through multiple loader stages. In summary, the overall operation method is as follows: The attacker attaches…