Simplesea

Simplesea, a harmful malware program, is attributed to the North Korea-linked threat actor known as Gleaming Pisces or Citrine Sleet. This malicious software is designed to exploit and damage computer systems, potentially leading to theft of personal information, disruption of operations, or even holding data hostage for ransom. It infiltrates systems through suspicious downloads, emails, or websites, often without the user's knowledge. The campaign involving Simplesea was previously associated with the distribution of the macOS remote administration tool POOLRAT. POOLRAT, also known as SIMPLESEA, is a C/C++ macOS implant capable of collecting basic system information and executing arbitrary commands. This includes carrying out file operations, which can be detrimental to the affected system. The malware was identified by a threat intelligence firm and linked back to Gleaming Pisces, reaffirming the group's ongoing cyber threats. Recent investigations have uncovered the existence of a Linux backdoor that likely corresponds to the SIMPLESEA macOS malware seen in the 3CX incident. This discovery indicates an expansion of the threat actor's capabilities, demonstrating their ability to target different operating systems and further broadening the potential impact of their activities. The continued evolution and sophistication of these threats highlight the importance of robust cybersecurity measures.