On January 20, a significant supply chain attack impacted eScan antivirus, a product by MicroWorld Technologies. The attackers compromised one of the regional update servers and distributed a malicious file named Reload.exe to users of the antivirus software. This malware initiated a multi-stage infection process and effectively crippled the antivirus's ability to receive subsequent updates by altering the HOSTS file. This action blocked legitimate update communications, leading to errors in the update service. Investigations into the attack revealed that the malicious Reload.exe file was not inserted due to a vulnerability in the software itself but rather through unauthorized access to the update infrastructure. The attackers deployed this malware under the guise of a fake invalid digital signature, which facilitated its acceptance as a legitimate update by unsuspecting users.