Malicious
2
/58

Threat

com.jerry.floatwindow

SmartView

Analyzed on 2022-02-01T23:01:02.913454

25

permissions

3

activities

2

services

2

receivers

1

domains

File sums

MD5 a4724db33bf97fd865527c7b5cd6b8d5
SHA1 b201784616a098d0a6a5406cee961bbaada06401
SHA256 b44374480059004030c00767ba3d2b7f1f94fd00c13d8e999dc340c9e315e637
Size 0.91MB

APKiD

Information computed with APKiD.

/tmp/tmplb6f0k0v!classes.dex
anti_vm
  • Build.MANUFACTURER check
  • Build.BOARD check
  • possible Build.SERIAL check
compiler
  • dx

SSdeep

Information computed with ssdeep.

APK file 24576:C6bQQFAbY0YWO3Jvi1H18J7jyhpRfzCJLO/YeUA5:z0Qyb7YWOsV8QVGWYlA5
Manifest 384:TgSG9aKoOGyOo23m0ozo/5oroS7Gn3GRFp2a+0Y/Gr5Q6+hBY4VreV9DsCRPGGYZ:…
classes.dex 12288:jaO8Vr/4kaepWlgJGWP1VlhUS/I/PjtP7TeJxGfIrzaHz2z2I0:jaO8VrgklpWl…

Dexofuzzy

Information computed with Dexofuzzy.

APK file 48:kAprqnc8qH2JBnGVkMWx8wQ8l8g3hnyjZIZ3iPetayGUO/B:1OzNJBGix8wx39yjZI…
classes.dex 48:kAprqnc8qH2JBnGVkMWx8wQ8l8g3hnyjZIZ3iPetayGUO/B:1OzNJBGix8wx39yjZI…

APK details

Information computed with AndroGuard and Pithus.

Package com.jerry.floatwindow
App name SmartView
Version name 1.0
Version code 1
SDK 23 - 29
UAID e58f80adcd16e309e73d6629d157d1ed59dbd342
Signature Signature V1
Frosting Not frosted

Certificate details

Information computed with AndroGuard.

MD5 01f45973675b64608628e4f90fc9a989
SHA1 292c1ba3ec2733bfbcb4e61ac23169bac9d1b71d
SHA256 332ae8e905d6258d2dfe84fca78de9da74a5ab481f93dc8f9325fc475757bf28
Issuer Common Name: Ethan, Organizational Unit: Wish Chip, Organization: Wish Chip, Locality: ShenZhen, State/Province: GuangDong, Country: 86
Not before 2019-10-24T16:12:16+00:00
Not after 2029-10-21T16:12:16+00:00

Manifest analysis

Information computed with MobSF.

High Clear text traffic is Enabled For App[android:usesCleartextTraffic=true]
The app intends to use cleartext network traffic, such as cleartext HTTP, FTP stacks, DownloadManager, and MediaPlayer. The default value for apps that target API level 27 or lower is "true". Apps that target API level 28 or higher default to "false". The key reason for avoiding cleartext traffic is the lack of confidentiality, authenticity, and protections against tampering; a network attacker can eavesdrop on transmitted data and also modify it without being detected.
Medium Application Data can be Backed up[android:allowBackup=true]
This flag allows anyone to backup your application data via adb. It allows users who have enabled USB debugging to copy application data off of the device.
High Activity (.CreateCodeActivity) is not Protected.An intent-filter exists.
An Activity is found to be shared with other apps on the device therefore leaving it accessible to any other application on the device. The presence of intent-filter indicates that the Activity is explicitly exported.
High Activity (.FloatWindow) is not Protected.An intent-filter exists.
An Activity is found to be shared with other apps on the device therefore leaving it accessible to any other application on the device. The presence of intent-filter indicates that the Activity is explicitly exported.
High Broadcast Receiver (.EthanDeviceAdminReceiver) is Protected by a permission, but the protection level of the permission should be checked.
Permission: android.permission.BIND_DEVICE_ADMIN [android:exported=true]
A Broadcast Receiver is found to be shared with other apps on the device therefore leaving it accessible to any other application on the device. It is protected by a permission which is not defined in the analysed application. As a result, the protection level of the permission should be checked where it is defined. If it is set to normal or dangerous, a malicious application can request and obtain the permission and interact with the component. If it is set to signature, only applications signed with the same certificate can obtain the permission.
High Service (.EthanJobService) is Protected by a permission, but the protection level of the permission should be checked.
Permission: android.permission.BIND_JOB_SERVICE [android:exported=true]
A Service is found to be shared with other apps on the device therefore leaving it accessible to any other application on the device. It is protected by a permission which is not defined in the analysed application. As a result, the protection level of the permission should be checked where it is defined. If it is set to normal or dangerous, a malicious application can request and obtain the permission and interact with the component. If it is set to signature, only applications signed with the same certificate can obtain the permission.
High Service (.MainService) is Protected by a permission, but the protection level of the permission should be checked.
Permission: android.permission.BIND_JOB_SERVICE [android:exported=true]
A Service is found to be shared with other apps on the device therefore leaving it accessible to any other application on the device. It is protected by a permission which is not defined in the analysed application. As a result, the protection level of the permission should be checked where it is defined. If it is set to normal or dangerous, a malicious application can request and obtain the permission and interact with the component. If it is set to signature, only applications signed with the same certificate can obtain the permission.
High Broadcast Receiver (.BootReceiver) is Protected by a permission, but the protection level of the permission should be checked.
Permission: android.permission.RECEIVE_BOOT_COMPLETED [android:exported=true]
A Broadcast Receiver is found to be shared with other apps on the device therefore leaving it accessible to any other application on the device. It is protected by a permission which is not defined in the analysed application. As a result, the protection level of the permission should be checked where it is defined. If it is set to normal or dangerous, a malicious application can request and obtain the permission and interact with the component. If it is set to signature, only applications signed with the same certificate can obtain the permission.
Medium High Intent Priority (2147483647)[android:priority]
By setting an intent priority higher than another intent, the app effectively overrides other requests.

Main Activity

Information computed with AndroGuard.

com.jerry.floatwindow.MainActivity

Activities

Information computed with AndroGuard.

com.jerry.floatwindow.MainActivity
com.jerry.floatwindow.CreateCodeActivity
com.jerry.floatwindow.FloatWindow

Receivers

Information computed with AndroGuard.

com.jerry.floatwindow.EthanDeviceAdminReceiver
com.jerry.floatwindow.BootReceiver

Services

Information computed with AndroGuard.

com.jerry.floatwindow.EthanJobService
com.jerry.floatwindow.MainService

Sample timeline

Oldest file found in APK Jan. 1, 1980, 8 a.m.
Certificate valid not before Oct. 24, 2019, 4:12 p.m.
Latest file found in APK April 29, 2020, 11:12 p.m.
First submission on VT May 21, 2020, 12:32 p.m.
Last submission on VT Dec. 21, 2021, 3:20 a.m.
Upload on Pithus Feb. 1, 2022, 11:01 p.m.
Certificate valid not after Oct. 21, 2029, 4:12 p.m.

NIAP analysis

Information computed with MobSF.

FCS_STO_EXT.1.1 The application does not store any credentials to non-volatile memory.
Storage of Credentials
FCS_CKM_EXT.1.1 The application generate no asymmetric cryptographic keys.
Cryptographic Key Generation Services
FDP_DEC_EXT.1.1 The application has access to ['location', 'network connectivity'].
Access to Platform Resources
FDP_DEC_EXT.1.2 The application has access to ['address book'].
Access to Platform Resources
FDP_NET_EXT.1.1 The application has user/application initiated network communications.
Network Communications
FDP_DAR_EXT.1.1 The application implement functionality to encrypt sensitive data in non-volatile memory.
Encryption Of Sensitive Application Data
FMT_MEC_EXT.1.1 The application invoke the mechanisms recommended by the platform vendor for storing and setting configuration options.
Supported Configuration Mechanism
FTP_DIT_EXT.1.1 The application does not encrypt any data in traffic or does not transmit any data between itself and another trusted IT product.
Protection of Data in Transit

Code analysis

Information computed with MobSF.

Low
CVSS:7.5
The App logs information. Sensitive information should never be logged.
MASVS: MSTG-STORAGE-3
CWE-532 Insertion of Sensitive Information into Log File
Files:
 com/jerry/floatwindow/b.java
com/jerry/floatwindow/FloatWindow.java
com/jerry/floatwindow/e.java
com/jerry/floatwindow/MainActivity.java
com/jerry/floatwindow/d.java
com/jerry/floatwindow/MainService.java
com/jerry/floatwindow/f.java
com/jerry/floatwindow/c.java
com/jerry/floatwindow/k.java
com/jerry/floatwindow/EthanDeviceAdminReceiver.java
com/jerry/floatwindow/BootReceiver.java
com/jerry/floatwindow/a.java
Pygal United States: 100

Map computed by Pithus.

Domains analysis

Information computed with MobSF.

US admin.expcover.com 184.170.208.228

URL analysis

Information computed with MobSF.

http://admin.expcover.com
Defined in Android String Resource

Permissions analysis

Information computed with MobSF.

High android.permission.ACCESS_COARSE_LOCATION coarse (network-based) location
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.
High android.permission.ACCESS_FINE_LOCATION fine (GPS) location
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.
High android.permission.WRITE_EXTERNAL_STORAGE read/modify/delete external storage contents
Allows an application to write to external storage.
High android.permission.WRITE_SETTINGS modify global system settings
Allows an application to modify the system's settings data. Malicious applications can corrupt your system's configuration.
High android.permission.READ_EXTERNAL_STORAGE read external storage contents
Allows an application to read from external storage.
High android.permission.READ_PHONE_STATE read phone state and identity
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.
High android.permission.READ_CONTACTS read contact data
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.
High android.permission.ANSWER_PHONE_CALLS Allows the app to answer an incoming phone call.
High android.permission.SYSTEM_ALERT_WINDOW display system-level alerts
Allows an application to show system-alert windows. Malicious applications can take over the entire screen of the phone.
Low android.permission.WAKE_LOCK prevent phone from sleeping
Allows an application to prevent the phone from going to sleep.
Low android.permission.RECEIVE_BOOT_COMPLETED automatically start at boot
Allows an application to start itself as soon as the system has finished booting. This can make it take longer to start the phone and allow the application to slow down the overall phone by always running.
Low android.permission.ACCESS_NETWORK_STATE view network status
Allows an application to view the status of all networks.
Low android.permission.ACCESS_WIFI_STATE view Wi-Fi status
Allows an application to view the information about the status of Wi-Fi.
Low android.permission.INTERNET full Internet access
Allows an application to create network sockets.
Low android.permission.CHANGE_WIFI_STATE change Wi-Fi status
Allows an application to connect to and disconnect from Wi-Fi access points and to make changes to configured Wi-Fi networks.
Low android.permission.FOREGROUND_SERVICE Allows a regular application to use Service.startForeground.
Low android.permission.REQUEST_IGNORE_BATTERY_OPTIMIZATIONS Permission an application must hold in order to use Settings.ACTION_REQUEST_IGNORE_BATTERY_OPTIMIZATIONS.
Medium android.permission.DEVICE_POWER turn phone on or off
Allows the application to turn the phone on or off.
Medium android.permission.CHANGE_CONFIGURATION change your UI settings
Allows an application to change the current configuration, such as the locale or overall font size.
Medium android.permission.WRITE_SECURE_SETTINGS modify secure system settings
Allows an application to modify the system's secure settings data. Not for use by common applications.
android.permission.BROADCAST_PACKAGE_ADDED Unknown permission
Unknown permission from android reference
android.permission.BROADCAST_PACKAGE_CHANGED Unknown permission
Unknown permission from android reference
android.permission.BROADCAST_PACKAGE_INSTALL Unknown permission
Unknown permission from android reference
android.permission.BROADCAST_PACKAGE_REPLACED Unknown permission
Unknown permission from android reference
android.permission.USES_POLICY_FORCE_LOCK Unknown permission
Unknown permission from android reference

Threat analysis

Information computed with Quark-Engine.

Confidence:
100%
Find a method from given class name, usually for reflection
Confidence:
100%
Method reflection
Confidence:
100%
Load class from given class name
Confidence:
100%
Read sensitive data(SMS, CALLLOG, etc)
Confidence:
100%
Implicit intent(view a web page, make a phone call, etc.) via setData
Confidence:
100%
Monitor the broadcast action events (BOOT_COMPLETED)
Confidence:
100%
Query the IMSI number
Confidence:
100%
Query the IMEI number
Confidence:
100%
Method reflection

Behavior analysis

Information computed with MobSF.

Get network interface information
       com/jerry/floatwindow/c.java
Get subscriber id
       com/jerry/floatwindow/c.java
Get system service
       com/jerry/floatwindow/FloatWindow.java
com/jerry/floatwindow/MainService.java
com/jerry/floatwindow/c.java
Inter process communication
       com/jerry/floatwindow/MainActivity.java
com/jerry/floatwindow/m.java
com/jerry/floatwindow/h.java
com/jerry/floatwindow/MainService.java
com/jerry/floatwindow/c.java
com/jerry/floatwindow/EthanDeviceAdminReceiver.java
com/jerry/floatwindow/BootReceiver.java
Local file i/o operations
       com/jerry/floatwindow/MainService.java
com/jerry/floatwindow/c.java
Starting activity
       com/jerry/floatwindow/MainActivity.java
com/jerry/floatwindow/m.java
com/jerry/floatwindow/BootReceiver.java
Starting service
       com/jerry/floatwindow/h.java

Control flow graphs analysis

Information computed by Pithus.

The application probably gets the IMEI of the phone

The application probably gets the subscriber ID associated to the SIM card/ Should never be collected

The application probably gets network interfaces addresses (IP and/or MAC)

The application probably plays sound

The application probably reads the Android serial number

The application probably listens accessibility events