New Android Malware Mimic As Social Media Apps Steals Sensitive Data

A new RAT malware has been discovered to be targeting Android devices. This malware is capable of executing additional commands compared to other RAT malware.

This malware can also perform phishing attacks by disguising itself as legitimate applications like Snapchat, Instagram, WhatsApp, Twitter, and Google to harvest credentials from the victim.

Sonicwall’s further investigation found that it consists of multiple HTML files in its assets folder, which are duplicate login pages of several legitimate applications.

These files will harvest the credentials from users and send them back to the C2 server.

Fraudulent HTML files from the Malware’s asset files (Source: SonicWall)

Android Malware Mimic As Social Media

The infection chain of this malware starts after the malicious application is installed on the victim’s Android devices.

However, when installing the application, it requests Accessibility service and Device admin permission to gain control over the installed device and execute further malicious actions.

The distribution of this malware is still unclear, but researchers speculate that it will be done using traditional social engineering techniques.

After installation, the malware communicates with the C2 server to receive instructions and commands for specific tasks.

The list of commands that are executed by the malware is as follows:

The C2 URL is also found to be embedded in the resource file.

Once the malware receives commands from the C2 server, the malware proceeds to harvest credentials from browsers and other Android applications by displaying a fraudulent login page using the HTML files (phishing).

Fraudulent Login pages displayed by the malware (Source: SonicWall)

When victims enter their credentials in these phishing pages, they are collected and shared with the showTt function.

In addition, the malware collects the list of phone numbers stored on the victim device and attempts to change the device’s wallpaper when a condition is met. 

If the ‘str’ parameter matches the decrypted value to 0, 1, or 2, the condition for changing the wallpaper is related to a specific resource.

The malware also retrieves information about the installed applications from the victim’s device. 

After further analysis of the malware code, the malware also uses the CameraManager to turn on/off the flashlight on the victim’s device.

Furthermore, the malware sends a message to a particular number based on the inputs received from the C2 server.

Code that sends a message to a specific number (Source: SonicWall)

Indicators Of Compromise

  • 0cc5cf33350853cdd219d56902e5b97eb699c975a40d24e0e211a1015948a13d
  • 37074eb92d3cfe4e2c51f1b96a6adf33ed6093e4caa34aa2fa1b9affe288a509
  • 3df7c8074b6b1ab35db387b5cb9ea9c6fc2f23667d1a191787aabfbf2fb23173
  • 6eb33f00d5e626bfd54889558c6d031c6cac8f180d3b0e39fbfa2c501b65f564
  • 9b366eeeffd6c9b726299bc3cf96b2e673572971555719be9b9e4dcaad895162
  • a28e99cb8e79d4c2d19ccfda338d43f74bd1daa214f5add54c298b2bcfaac9c3
  • d09f2df6dc6f27a9df6e0e0995b91a5189622b1e53992474b2791bbd679f6987
  • d8413287ac20dabcf38bc2b5ecd65a37584d8066a364eede77c715ec63b7e0f1
  • ecf941c1cc85ee576f0d4ef761135d3e924dec67bc3f0051a43015924c53bfbb
  • f10072b712d1eed0f7e2290b47d39212918f3e1fd4deef00bf42ea3fe9809c41

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Author: Eswar