Additionally, downloading software and applications from official websites and trusted app stores can protect against threats that pose as legitimate programs.

MacOS users can stay safe from such threats by regularly updating the system and applications to patch exploitable vulnerabilities. The following credentials will be used to mine cryptocurrency on the infected system: The entry in the script which contains the cryptocurrency-mining command The saved file is a commandline app used to mine Koto in particular.įigure 4. The malware connects to hxxp://46226108171/xmrig2 and saves a file to /Users/Shared/xmrig2 to mine cryptocurrency. These plist files are loaded into the system through the launchctl command, enabling them to run at startup. It also downloads a plist file from hxxp://46226108171/comappleproxyinitializeplist, which contains encrypted Python commands identical to the one that checks if Little Snitch is running and connects to the encrypted Empyre backend. The plist file will be used to launch xmrig2 to mine cryptocurrency. The malware also downloads a plist file from hxxp://46226108171/comapplerig2plist and saves it to ~/Library/LaunchAgents. This will be saved as ~/Library/Application Support/Google/Chrome/Default/.zip, and subsequently uploaded to hxxp://46226108171:8000.Īutostart Technique and Cryptocurrency-Mining zip-compressed along with Google Chrome cookies. The information will then be collected as a. This will be used to display the decrypted information from the Google Chrome browser. The malware connects to hxxp://46226108171/harmlesslittlecodepy and saves Python scripts to ~/Library/Application Support/Google/Chrome/Default. Malware stealing user credentials and credit card information Target information includes origin URL, username, password, and credit card name, number, and expiration date.įigure 3. Uploadminer.sh contains routines capable of stealing saved information from Google Chrome browsers. The file uploadminer.sh will be saved to the system and executed. It will receive a command to download Bash scripts from hxxp://46226108171:4444/uploadminersh once the backdoor runs. If it’s not, the script will connect to hxxp://46226108171:4444/login/process.php, which hosts an encrypted Empyre backend capable of pushing arbitrary commands to an infected macOS system. We also found out that the malware connects to hxxps:///jj9a, which contains an encrypted Python script that checks if Little Snitch - a host-based application firewall for macOS - is running. This is the original Adobe Zii.app used to camouflage its malicious background activities. The contents are then extracted and executed in the system. While running a copy of Adobe Zii.app, we observed that it downloads sample.app from hxxp://46226108171:80/sample.zip and saves it to the user directory ~/.

Zii acrobat