North Korea-linked APT group Lazarus actor has been targeting vulnerable Microsoft IIS servers to deploy malware. AhnLab Security Emergency response Center (ASEC) researchers reported that the Lazarus APT Group is targeting vulnerable versions of Microsoft IIS servers in a recent wave of malware-based attacks. Once discovered a vulnerable ISS server, the attackers leverage the DLL side-loading […]
Experts spotted a malware dubbed Frebniis that abuses a Microsoft IIS feature to deploy a backdoor and monitor all HTTP traffic to the system. Broadcom Symantec researchers have spotted a new malware, tracked as Frebniis, that abuses Microsoft Internet Information Services (IIS) to deploy a backdoor and monitor all HTTP traffic to the infected system, […]
Researchers warn of a new ‘SessionManager’ Backdoor that was employed in attacks targeting Microsoft IIS Servers since March 2021. Researchers from Kaspersky Lab have discovered a new ‘SessionManager’ Backdoor that was employed in attacks targeting Microsoft IIS Servers since March 2021. “In early 2022, we investigated one such IIS backdoor: SessionManager. In late April 2022, […]
Windows servers running Internet Information Services (IIS) are vulnerable to denial-of-service (DoS) attacks carried out through malicious HTTP/2 requests. Microsoft revealed that Windows servers running Internet Information Services (IIS) are vulnerable to denial-of-service (DoS) attacks. Attackers can trigger a DoS condition by sending specially crafted HTTP/2 requests, the CPU usage will temporarily spike to 100% […]