A supply chain attack targeted the eScan antivirus software, distributing malware through the update server. The attack, detected on January 20, involved a malicious Reload.exe file that initiated a multi-stage infection chain. This malware prevented further antivirus updates, ensured persistence through scheduled tasks, and communicated with control servers to download additional payloads. Attackers gained unauthorized access to a regional update server, deploying a malicious file with a fake digital signature. eScan developers quickly isolated the affected infrastructure and reset access credentials. Users are advised to check for infection signs, use a provided removal utility, and block known malware control server addresses. Kaspersky's security solutions successfully detect the malware used in this attack.