DHS and FBI analyze KEYMARBLE, a 32-bit Windows Remote Access Trojan attributed by the U.S. Government to HIDDEN COBRA, the label used for North Korean government malicious cyber activity. The malware de-obfuscates APIs, uses port 443 to connect to hard-coded IP addresses, and waits for operator instructions from remote infrastructure. Its capabilities include collecting victim system and storage information, listing running processes, modifying registry data, downloading files, executing commands, capturing screenshots, and exfiltrating data. Static analysis also found a customized XOR algorithm used to secure data transfers and command-and-control sessions, giving defenders behavioral and host artifacts for prioritizing detection and mitigation.