Dr.Web Anti-virus for Android

• Performs quick or full file system scans as well as custom scans of user-specified files and folders.
• Using the unique Origins Tracing™ technology, detects new, unknown malware.
• The SpIDer Guard monitor scans file systems in real-time whenever an attempt is made to store files in the device’s memory.
• Moves detected threats to the quarantine from which isolated files can be restored.

And also:

• Minimally impacts system performance.
• Economises battery resources.
• Economises traffic due to the small size of the virus database updates, which is particularly important for users whose mobile device plans have usage limits.
• Collects statistics on detected threats and actions performed.
• Offers handy and informative desktop widgets for accessing the application.