Here are some potential effects and behaviors of malicious mobile applications:
- Steal personal information like contacts, call logs, text messages, photos, location data
- Make fraudulent calls or send text messages to premium numbers without the user's knowledge
- Install additional malware payloads like keyloggers or remote access tools
- Disable security mechanisms like antivirus to allow other malware to infect the device
- Overwrite system applications or settings to persist even if the malware is uninstalled
- Spy on the user through microphone or camera without triggering any indicators
- Encrypt files or lock the device to demand ransom for its release