rex[.]apk | Triage

General

Target

rex.apk
Size

7.6MB
MD5

4e23bc04c672be6b4d70b14232b65805
SHA1

7f4f0c99028b9f61cdfc2b485a27c16fd3ae5f75
SHA256

34585eda422c74507bffc0e06a4a90203f7f23b3476e275865310daba687211e
SHA512

3d6f99faeafb5065b123645d88e2801b9c3e9954eae8005ade0c5b2b56b265fb1a4874216414261ade62d03ea42effd5112e81daab2e4e1c2916db4adbe00249
SSDEEP

196608:AcaiXcKqcEcdEppfcVcgA0TIrsE+5zFKKpEC6iOcMdsd:haisI9d0UqgA0krs7T9/d

Score

6^/10

Malware Config

Signatures

Attempts to obfuscate APK file format
Applies obfuscation techniques to the APK format in order to hinder analysis

Declares broadcast receivers with permission to handle system events 1 IoCs

description	ioc
Required by device admin receivers to bind with the system. Allows apps to manage device administration features.	android.permission.BIND_DEVICE_ADMIN

Declares services with permission to bind to the system 2 IoCs

description	ioc
Required by notification listener services to bind with the system. Allows apps to listen to and interact with notifications on the device.	android.permission.BIND_NOTIFICATION_LISTENER_SERVICE
Required by accessibility services to bind with the system. Allows apps to access accessibility features.	android.permission.BIND_ACCESSIBILITY_SERVICE

Requests dangerous framework permissions 17 IoCs

description	ioc
Allows an application to read or write the system settings.	android.permission.WRITE_SETTINGS
Allows access to the list of accounts in the Accounts Service.	android.permission.GET_ACCOUNTS
Allows read only access to phone state, including the current cellular network information, the status of any ongoing calls, and a list of any PhoneAccounts registered on the device.	android.permission.READ_PHONE_STATE
Allows an app to post notifications.	android.permission.POST_NOTIFICATIONS
Allows read only access to phone state, including the current cellular network information, the status of any ongoing calls, and a list of any PhoneAccounts registered on the device.	android.permission.READ_PHONE_STATE
Allows an app to access approximate location.	android.permission.ACCESS_COARSE_LOCATION
Allows an app to create windows using the type LayoutParams.TYPE_APPLICATION_OVERLAY, shown on top of all other apps.	android.permission.SYSTEM_ALERT_WINDOW
Allows an application to read SMS messages.	android.permission.READ_SMS
Allows an application to read the user's contacts data.	android.permission.READ_CONTACTS
Allows an application to read the user's call log.	android.permission.READ_CALL_LOG
Allows an application to initiate a phone call without going through the Dialer user interface for the user to confirm the call.	android.permission.CALL_PHONE
Allows an application to send SMS messages.	android.permission.SEND_SMS
Allows an application to request installing packages.	android.permission.REQUEST_INSTALL_PACKAGES
Allows access to the list of accounts in the Accounts Service.	android.permission.GET_ACCOUNTS
Allows an application to write and read the user's call log data.	android.permission.WRITE_CALL_LOG
Allows an application to receive SMS messages.	android.permission.RECEIVE_SMS
Allows an application to write the user's contacts data.	android.permission.WRITE_CONTACTS

Files

rex.apk
.apk android

com.tencent.mm

.main

Activities

.main

android.intent.action.MAIN
android.intent.action.SEND
android.intent.action.SENDTO

Permissions

android.permission.WRITE_SETTINGS
android.permission.RECEIVE_BOOT_COMPLETED
android.permission.EXPAND_STATUS_BAR
android.permission.KILL_BACKGROUND_PROCESSES
android.permission.GET_ACCOUNTS
android.permission.REQUEST_DELETE_PACKAGES
oppo.permission.OPPO_COMPONENT_SAFE
oplus.permission.OPLUS_COMPONENT_SAFE
com.huawei.permission.external_app_settings.USE_COMPONENT
android.permission.QUERY_ALL_PACKAGES
android.permission.READ_PHONE_STATE
android.permission.INTERNET
android.permission.WAKE_LOCK
android.permission.VIBRATE
android.permission.POST_NOTIFICATIONS
android.permission.READ_PHONE_STATE
android.permission.ACCESS_COARSE_LOCATION
android.permission.ACCESS_NETWORK_STATE
android.permission.CHANGE_NETWORK_STATE
android.permission.ACCESS_COARSE_UPDATES
android.permission.SYSTEM_ALERT_WINDOW
android.permission.SYSTEM_ERROR_WINDOW
android.permission.READ_SMS
android.permission.WRITE_SMS
android.permission.READ_CONTACTS
android.permission.READ_CALL_LOG
android.permission.CALL_PHONE
android.permission.SEND_SMS
android.permission.ACCESS_WIFI_STATE
android.permission.FOREGROUND_SERVICE
android.permission.RECEIVE_BOOT_COMPLETED
android.permission.ACCESS_NOTIFICATION_POLICY
com.android.alarm.permission.SET_ALARM
android.permission.CHANGE_WIFI_STATE
android.permission.USE_FULL_SCREEN_INTENT
android.permission.ACTION_MANAGE_OVERLAY_PERMISSION
android.permission.REQUEST_IGNORE_BATTERY_OPTIMIZATIONS
android.permission.REQUEST_INSTALL_PACKAGES
android.permission.GET_ACCOUNTS
android.permission.MANAGE_ACCOUNTS
android.permission.WRITE_CALL_LOG
android.permission.DISABLE_KEYGUARD
android.permission.BATTERY_STATS
android.permission.RECEIVE_SMS
android.permission.WRITE_CONTACTS

Receivers

anywheresoftware.b4a.objects.AdminReceiver2

android.app.action.DEVICE_ADMIN_ENABLED

.myreceiver

android.intent.action.BOOT_COMPLETED
android.intent.action.PACKAGE_ADDED
android.intent.action.PACKAGE_REMOVED
android.intent.action.SCREEN_ON
android.intent.action.SCREEN_OFF
android.intent.action.ACTION_POWER_CONNECTED
android.intent.action.ACTION_POWER_DISCONNECTED

.notificationservice$notificationservice_BR

android.intent.action.BOOT_COMPLETED

.s1$s1_BR

android.provider.Telephony.SMS_RECEIVED

.service1$service1_BR

android.provider.Telephony.SMS_DELIVER

.service2$service2_BR

android.provider.Telephony.WAP_PUSH_DELIVER

Services

anywheresoftware.b4a.objects.NotificationListenerWrapper

android.service.notification.NotificationListenerService

com.tencent.mm.backgroundservice

android.accessibilityservice.AccessibilityService

.service3

android.intent.action.RESPOND_VIA_MESSAGE

Android Permissions

rex.apk

Permissions

android.permission.WRITE_SETTINGS

android.permission.RECEIVE_BOOT_COMPLETED

android.permission.EXPAND_STATUS_BAR

android.permission.KILL_BACKGROUND_PROCESSES

android.permission.GET_ACCOUNTS

android.permission.REQUEST_DELETE_PACKAGES

oppo.permission.OPPO_COMPONENT_SAFE

oplus.permission.OPLUS_COMPONENT_SAFE

com.huawei.permission.external_app_settings.USE_COMPONENT

android.permission.QUERY_ALL_PACKAGES

android.permission.READ_PHONE_STATE

android.permission.INTERNET

android.permission.WAKE_LOCK

android.permission.VIBRATE

android.permission.POST_NOTIFICATIONS

android.permission.READ_PHONE_STATE

android.permission.ACCESS_COARSE_LOCATION

android.permission.ACCESS_NETWORK_STATE

android.permission.CHANGE_NETWORK_STATE

android.permission.ACCESS_COARSE_UPDATES

android.permission.SYSTEM_ALERT_WINDOW

android.permission.SYSTEM_ERROR_WINDOW

android.permission.READ_SMS

android.permission.WRITE_SMS

android.permission.READ_CONTACTS

android.permission.READ_CALL_LOG

android.permission.CALL_PHONE

android.permission.SEND_SMS

android.permission.ACCESS_WIFI_STATE

android.permission.FOREGROUND_SERVICE

android.permission.RECEIVE_BOOT_COMPLETED

android.permission.ACCESS_NOTIFICATION_POLICY

com.android.alarm.permission.SET_ALARM

android.permission.CHANGE_WIFI_STATE

android.permission.USE_FULL_SCREEN_INTENT

android.permission.ACTION_MANAGE_OVERLAY_PERMISSION

android.permission.REQUEST_IGNORE_BATTERY_OPTIMIZATIONS

android.permission.REQUEST_INSTALL_PACKAGES

android.permission.GET_ACCOUNTS

android.permission.MANAGE_ACCOUNTS

android.permission.WRITE_CALL_LOG

android.permission.DISABLE_KEYGUARD

android.permission.BATTERY_STATS

android.permission.RECEIVE_SMS

android.permission.WRITE_CONTACTS

Sharing

General

Malware Config

Signatures

Files

com.tencent.mm

.main

Activities

.main

Permissions

Receivers

anywheresoftware.b4a.objects.AdminReceiver2

.myreceiver

.notificationservice$notificationservice_BR

.s1$s1_BR

.service1$service1_BR

.service2$service2_BR

Services

anywheresoftware.b4a.objects.NotificationListenerWrapper

com.tencent.mm.backgroundservice

.service3

Android Permissions

rex.apk