As of this publication, BRONZE BUTLER demonstrates a preference for concurrently using Datper and xxmm in its operations. CTU researchers identified an xxmm builder for xxmm (see Figure 2), which suggests that the threat actors customize the xxmm malware settings based on the target. T-SMB Scan — This SMB scanning tool was originally published on a Chinese program-sharing website (pudn.com). BRONZE BUTLER removed its help message functionality. After a few minutes, execute the malicious file on the system. Use malware to upload the large list of enumerated files to the C2 server. Use downloaders or other malware to send the new list to a compromised host. Use an uploader or other malware to send the archived files to an attacker-controlled server. Search proxy log files for evidence of web server scanning using the URL patterns associated with BRONZE BUTLER activity. Use an advanced endpoint threat detection (AETD) solution to monitor activity on network endpoints. Also implement strict security controls for privileged accounts such as Active Directory administrator to prevent access by an unauthorized user