A note on these insights.
The findings outlined in this blog post were drawn from the condensed results of a Malcore scan. To review the exhaustive findings of Malcore’s static analysis of Wells Fargo’s mobile banking app APK, click the button below.
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Discovered Trackers
Appdynamics
Tealium
Google Firebase Analytics
Google AdMob
Bolts
High severity warnings from code analysis
The App uses an insecure Random Number Generator.
App creates temp file. Sensitive information should never be written into a temp file.
App uses SQLite Database and execute raw SQL query. Untrusted user input in raw SQL queries can cause SQL Injection. Also sensitive information should be encrypted and written to the database.
Insecure Implementation of SSL. Trusting all the certificates or accepting self signed certificates is a critical Security Hole. This application is vulnerable to MITM attacks
Files may contain hardcoded sensitive informations like usernames, passwords, keys etc.
App can read/write to External Storage. Any App can read data written to External Storage.
This App has capabilities to prevent against Screenshots from Recent Task History/ Now On Tap etc.
Suspicious severity warnings from code analysis
Application attempts to discover build version of device
Dangerous Labelled permissions from Android
Permissions which Android’s developers have labelled as “Dangerous”, per the documentation available here, are listed below.
Name: CHANGE_NETWORK_STATE
Description: Allows an application to change the state of network connectivity.
Name: ACCESS_COARSE_LOCATION
Description: Access coarse location sources, such as the mobile network database, to determine an approximate phone location, where available. Malicious applications can use this to determine approximately where you are.
Name: CAMERA
Description: Allows application to take pictures and videos with the camera. This allows the application to collect images that the camera is seeing at any time.
Name: NFC
Description: Allows an application to communicate with Near-Field Communication (NFC) tags, cards and readers.
Name: ACCESS_FINE_LOCATION
Description: Access fine location sources, such as the Global Positioning System on the phone, where available. Malicious applications can use this to determine where you are and may consume additional battery power.
Name: REORDER_TASKS
Description: Allows an application to move tasks to the foreground and background. Malicious applications can force themselves to the front without your control.
Name: ACCESS_NETWORK_STATE
Description: Allows an application to view the status of all networks.
Name: WRITE_EXTERNAL_STORAGE
Description: Allows an application to write to the SD card.
Name: READ_PHONE_NUMBERS
Description: Allows read access to the device's phone number(s). This is a subset of the capabilities granted by
Name: READ_EXTERNAL_STORAGE
Description: Allows an application to read from SD Card.
Name: QUERY_ALL_PACKAGES
Description: Allows query of any normal app on the device, regardless of manifest declarations.
Name: CALL_PHONE
Description: Allows the application to call phone numbers without your intervention. Malicious applications may cause unexpected calls on your phone bill. Note that this does not allow the application to call emergency numbers.
Name: READ_PHONE_STATE
Description: Allows the application to access the phone features of the device. An application with this permission can determine the phone number and serial number of this phone, whether a call is active, the number that call is connected to and so on.
Name: WAKE_LOCK
Description: Allows an application to prevent the phone from going to sleep.
Name: READ_CONTACTS
Description: Allows an application to read all of the contact (address) data stored on your phone. Malicious applications can use this to send your data to other people.
To view how these results compare within industry see our analysis:
To view how these scores are created visit our transparency post, below, where we published a description of our phone application threat scoring algorithm.