Rewterz Threat Alert – M00nD3V Logger

Severity

High

Analysis Summary

Researchers have analyzed the M00nD3V Logger, a new information stealing Trojan with wide functionality. The Trojan is marketed on hacking forums and sold using a subscription structure. Customers are distributing the payload via various methods, including spam email and compromised websites. The initial file is a .NET executable that kicks off the infection process by launching a loader. This loader unpacks and decrypts the main M00nD3V Logger payload, which runs under the RegAsm.exe process. The malware then begins initializing its configuration. First, anti-debugging checks are performed and botnet and antivirus killers are run. Persistence is established via a Registry Run key. Hardcoded credentials that will be used for exfiltration are decrypted. Lastly, privilege escalation is performed as necessary. Additionally, the BouncyCastle crypto package is downloaded and loaded into memory. In terms of data collection, M00nD3V Logger is capable of gathering passwords from 42 applications (email clients, browsers, FTP clients, and more) and capturing keystrokes, clipboard data, and webcam pictures. The gathered data is then encrypted with the BouncyCastle crypto package and can be exfiltrated via SMTP, FTP, or proxy. The credentials and destination addresses for these methods are set during the configuration initialization process.

Impact

• Information theft
• Exposure of sensitive data 

Indicators of Compromise

MD5

bf8801bcd5a196744ccd0f863f84df71

SHA-256

c23b33ddb4e0cfa52b9242648f5cb7a6ee916b4ba1e6f547d8d5ef543dccbb9d

SHA1

bffcc8dd81006a641818d125e691b5b6157c8619

Remediation

• Block all threat indicators at your respective controls.
• Search for IOCs in your environment.