Blog – Page 11

Cybersecurity researchers have disclosed details of a new campaign dubbed SHADOW#REACTOR that employs an evasive multi-stage attack chain to deliver a commercially available remote administration tool called Remcos RAT and establish persistent, covert remote access.

“The infection chain follows a tightly orchestrated execution path: an obfuscated VBS launcher executed via wscript.exe invokes a PowerShell downloader, which retrieves fragmented, text-based payloads from a remote host,” Securonix researchers Akshay Gaikwad, Shikha Sangwan, and Aaron Beardslee said in a technical report shared with The Hacker News.

“These fragments are reconstructed into encoded loaders, decoded in memory by a. NET Reactor–protected assembly, and used to fetch and apply a remote Remcos configuration. The final stage leverages MSBuild.exe as a living-off-the-land binary (LOLBin) to complete execution, after which the Remcos RAT backdoor is fully deployed and takes control of the compromised system.”

Check Point reveals VoidLink, a China-linked Linux malware built for cloud environments with modular plugins, rootkit features, and adaptive evasion.

A newly discovered advanced cloud-native Linux malware framework named VoidLink focuses on cloud environments, providing attackers with custom loaders, implants, rootkits, and plugins designed for modern infrastructures.

VoidLink is written in Zig, Go, and C, and its code shows signs of a project under active development, with extensive documentation, and likely intended for commercial purposes.

Malware analysts at cybersecurity company Check Point say that VoidLink can determine if it runs inside Kubernetes or Docker environments and adjust its behavior accordingly.