Effects consists of techniques used by the adversary to execute his or her mission objectives but that do not cleanly fit into another category such as Collection. Mission objectives vary based on each adversary's goals, but examples include toll fraud, destruction of device data, or locking the user out of his or her device until a ransom is paid.
ID: TA0034


Techniques: 6
T1471Encrypt Files

An adversary may encrypt files stored on the mobile device to prevent the user from accessing them, for example with the intent of only unlocking access to the files after a ransom is paid. Without escalated privileges, the adversary is generally limited to only encrypting files in external/shared storage locations. This technique has been demonstrated on Android. We are unaware of any demonstrated use on iOS.

T1472Generate Fraudulent Advertising Revenue

An adversary could seek to generate fraudulent advertising revenue from mobile devices, for example by triggering automatic clicks of advertising links without user involvement.

T1446Lock User Out of Device

An adversary may seek to lock the legitimate user out of the device, for example until a ransom is paid.

T1452Manipulate App Store Rankings or Ratings

An adversary could use access to a compromised device's credentials to attempt to manipulate app store rankings or ratings by triggering application downloads or posting fake reviews of applications. This technique likely requires privileged access (a rooted or jailbroken device).

T1448Premium SMS Toll Fraud

A malicious app could use standard Android APIs to send SMS messages. SMS messages could potentially be sent to premium numbers that charge the device owner and generate revenue for an adversary.

T1447Wipe Device Data

A malicious application could abuse Android device administrator access to wipe device contents, for example if a ransom is not paid.