Trojan:AndroidOS/AdSMS.A is distributed via a link embedded in a fake SMS; on clicking the link, the trojan's Android Package (APK) file is downloaded and installed onto the mobile device.

Trojan:AndroidOS/AdSMS.A can be uninstalled with the following steps:

The SMS appears to be targeted to Android users in mainland China, as it pretends to be from a mobile service provider in China and contains Chinese-language text, a translated example of which is as follows:

The link provided in the SMS leads to the APK for this trojan. At the time of writing, the APK uses the filename htc.apk.

The trojan is only installed if the user clicks on the link in the malicious SMS. Shown below are the permissions requested by the trojan:

Permissions request by Trojan:AndroidOS/AdSMS.A

Once installed, no icon appears in the phone's applications menu to indicate the malware's presence on the phone, though the trojan will run in the background.

Users may detect its presence by checking the "Manage applications" menu under Settings for the application name andiord.system.providers:

Trojan:AndroidOS/AdSMS.A's listed as 'andiord.system.providers'

While running, it will download an additional file and configuration file from various malicious sites:

The trojan also obtains the following details from the phone:

And sends the details to remote servers.

The trojan is also capable of reading, writing and sending SMS messages and changing the phone's Wi-Fi state.