njRAT is a remote access trojan (RAT) that has been known since at least 2014 and is primarily used to gain unauthorized remote control over infected Windows systems. It allows attackers to perform a variety of malicious activities including keylogging, screen capturing, file system manipulation, and execution of arbitrary commands. The provided information indicates this is an OSINT report referencing old njRAT activity, with no specific new variants or active campaigns detailed. njRAT typically spreads through phishing emails, malicious downloads, or exploit kits, targeting end-user systems to establish persistence and remote control. Despite its age, njRAT remains relevant due to its ease of use, availability in underground forums, and continued use by low-sophistication threat actors. The report notes a low severity and no known exploits in the wild at the time of publication, suggesting limited active exploitation or impact currently. The technical details show moderate confidence in the analysis and a low threat level, consistent with njRAT's historical profile as a commodity RAT rather than a sophisticated targeted threat. However, its capabilities for remote access and data exfiltration mean it can still pose risks if deployed in an environment without adequate defenses.

For European organizations, the impact of njRAT infections can include unauthorized access to sensitive data, potential intellectual property theft, disruption of business operations, and the risk of lateral movement within networks. While njRAT itself is not a zero-day or highly sophisticated threat, its presence can facilitate further compromise by enabling attackers to deploy additional malware or conduct espionage. Organizations with less mature endpoint security or user awareness programs are more vulnerable. The low severity rating suggests that widespread active njRAT campaigns are not currently a major threat, but the tool's continued availability means opportunistic attacks remain possible. European entities in sectors with high-value data or critical infrastructure could face reputational damage and regulatory consequences if infected systems lead to data breaches under GDPR. The lack of known exploits in the wild reduces immediate risk but does not eliminate the threat posed by phishing or social engineering vectors that deliver njRAT payloads.

To mitigate njRAT risks, European organizations should implement targeted measures beyond generic advice: 1) Enhance email security with advanced phishing detection and sandboxing to prevent malicious attachments and links from reaching users. 2) Deploy endpoint detection and response (EDR) solutions capable of identifying RAT behaviors such as unusual network connections, process injections, and persistence mechanisms. 3) Conduct regular user awareness training focused on recognizing social engineering tactics commonly used to deliver RATs. 4) Enforce application whitelisting and restrict execution of unauthorized binaries to reduce the chance of njRAT payload execution. 5) Monitor network traffic for anomalous outbound connections to known command and control servers associated with njRAT. 6) Maintain up-to-date backups and incident response plans to quickly recover from infections. 7) Use threat intelligence feeds to stay informed about emerging njRAT variants or campaigns. These steps, combined with robust patch management and least privilege principles, will reduce the likelihood and impact of njRAT infections.