Trojan:Android/Kmin
Summary
Trojan:Android/Kmin variants display a message as a decoy, while silently performing multiple malicious routines, including sending SMS messages to a premium-rate number and downloading and installing an additional application onto the device.
Removal
Once the scan is complete, the F-Secure security product will ask if you want to uninstall the file, move it to the quarantine or keep it installed on your device.
A False Positive is when a file is incorrectly detected as harmful, usually because its code or behavior resembles known harmful programs. A False Positive will usually be fixed in a subsequent database update without any action needed on your part. If you wish, you may also:
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Check for the latest database updates
First check if your F-Secure security program is using the latest updates, then try scanning the file again.
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Submit a sample
After checking, if you still believe the file is incorrectly detected, you can submit a sample of it for re-analysis.
Note: If the file was moved to quarantine, you need to collect the file from quarantine before you can submit it.
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Exclude a file from further scanning
If you are certain that the file is safe and want to continue using it, you can exclude it from further scanning by the F-Secure security product.
Note: You need administrative rights to change the settings.
Technical Details
Upon execution, variants in the Kmin trojan family display a message asking the user for a permission to proceed with a specified action; the A variant asks whether the user wishes to install a paid app and subscribe to a service, while the B and C variants only enquire whether the user would like to install a paid application.
Regardless of whether the user accepts or declines, the app will proceed with the following actions:
- Sending the Internation Mobile Equipment Identity (IMEI) number and phone number to a remote server
- Sending SMS messages to a premium-rate number
- Downloading and installing another application
- Running services in the background
Variants
- Trojan:Android/Kmin.A
- Trojan:Android/Kmin.B
- Trojan:Android/Kmin.C
More
This malware is discussed in further detail in: Q1 2012 Mobile Threat Report (PDF).
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