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Threat

com.sec.android.app.simsettingmgr

SIM card manager

Analyzed on 2022-05-27T13:13:57.227525

20

permissions

10

activities

0

services

1

receivers

0

domains

File sums

MD5 cf5033c8d99f20eb3b38bafc163e43b1
SHA1 3f2ee4199d2539e24fe2b124bf860fd33a2c73d0
SHA256 c2f256c4957d4a43e6fe21b10239822f3d8da340bc688f5ad07bdc0328557c4c
Size 2.21MB

APKiD

Information computed with APKiD.

/tmp/tmpz6mk9yxv!classes.dex
yara_issue
  • yara issue - dex file recognized by apkid but not yara module
anti_vm
  • subscriber ID check
compiler
  • unknown (please file detection issue!)

SSdeep

Information computed with ssdeep.

APK file 49152:GqeHuP218pmhILj7z4TD/FhzSa6RJoh/n4u2ZrwDFhj:GqeHuP218pmhiTCDdoVyFJ2VwD/
Manifest 192:h719DVs/Evbkjroi613co/Al5ligDCSMH6ApO+zpO9CImZrnZggjSC3PYv3LGb:h7…
classes.dex 24576:LEVHFJf5ylbTa4ThJSooUmjbRdzCVg1ztiKMe/4JzRYQyx6We+ghTKiJMsNK73g…

Dexofuzzy

Information computed with Dexofuzzy.

classes.dex None

APK details

Information computed with AndroGuard and Pithus.

Package com.sec.android.app.simsettingmgr
App name SIM card manager
Version name 1.0
Version code 1
SDK 26 - 28
UAID 5cfcc1c94a62a35c6ab1d09b1dbf04fa2fdebaa5
Signature Signature V1 Signature V2
Frosting Not frosted
Blocks found within V2 signature:
  • 0x7109871a: Unknown

Certificate details

Information computed with AndroGuard.

MD5 d087e72912fba064cafa78dc34aea839
SHA1 9ca5170f381919dfe0446fcdab18b19a143b3163
SHA256 34df0e7a9f1cf1892e45c056b4973cd81ccf148a4050d11aea4ac5a65f900a42
Issuer Email Address: android.os@samsung.com, Common Name: Samsung Cert, Organizational Unit: DMC, Organization: Samsung Corporation, Locality: Suwon City, State/Province: South Korea, Country: KR
Not before 2011-06-22T12:25:12+00:00
Not after 2038-11-07T12:25:12+00:00

File Analysis

Information computed with MobSF.

Findings Files
Certificate/Key files hardcoded inside the app. SEC-INF/buildConfirm.crt

Manifest analysis

Information computed with MobSF.

Low App is direct-boot aware [android:directBootAware=true]
This app can run before the user unlocks the device. If you're using a custom subclass of Application, and if any component inside your application is direct - boot aware, then your entire custom application is considered to be direct - boot aware.During Direct Boot, your application can only access the data that is stored in device protected storage.
Medium Application Data can be Backed up[android:allowBackup] flag is missing.
The flag [android:allowBackup] should be set to false. By default it is set to true and 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 (.NetworkManagementSetting) 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 (.verInfo) 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 (.ManagementDataConnectionDialog) 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 (NetworkStatusReceiver) is not Protected.An intent-filter exists.
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. The presence of intent-filter indicates that the Broadcast Receiver is explicitly exported.
High Dailer Code: 0000 Found [android:scheme="android_secret_code"]
A secret code was found in the manifest. These codes, when entered into the dialer grant access to hidden content that may contain sensitive information.

Activities

Information computed with AndroGuard.

com.sec.android.app.simsettingmgr.NetworkManagement
com.sec.android.app.simsettingmgr.NetworkManagementSetting
com.sec.android.app.simsettingmgr.esim.oobedownload.BackgroundDownLoad
com.sec.android.app.simsettingmgr.esim.qrcode.CaptureActivity
com.sec.android.app.simsettingmgr.esim.qrcode.DecoderActivity
com.sec.android.app.simsettingmgr.esim.EsimLockActivity
com.sec.android.app.simsettingmgr.esim.ESIMManagermentActivity
com.sec.android.app.simsettingmgr.verInfo
com.sec.android.app.simsettingmgr.ManagementDataConnectionDialog
com.sec.android.app.simsettingmgr.esim.manualinput.ManualInputActivity

Receivers

Information computed with AndroGuard.

com.sec.android.app.simsettingmgr.NetworkStatusReceiver

Sample timeline

Oldest file found in APK Jan. 1, 2009, midnight
Latest file found in APK Jan. 1, 2009, midnight
Certificate valid not before June 22, 2011, 12:25 p.m.
First submission on VT April 27, 2021, 4:03 a.m.
Last submission on VT April 27, 2021, 4:03 a.m.
Upload on Pithus May 27, 2022, 1:13 p.m.
Certificate valid not after Nov. 7, 2038, 12:25 p.m.

NIAP analysis

Information computed with MobSF.

FCS_RBG_EXT.1.1 The application use no DRBG functionality for its cryptographic operations.
Random Bit Generation Services
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 ['network connectivity'].
Access to Platform Resources
FDP_DEC_EXT.1.2 The application has access to no sensitive information repositories.
Access to Platform Resources
FDP_NET_EXT.1.1 The application has no network communications.
Network Communications
FDP_DAR_EXT.1.1 The application does not encrypt files 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/jwetherell/quick_response_code/camera/CameraManager.java
com/sec/android/app/simsettingmgr/esim/qrcode/DecoderActivity.java
com/sec/android/app/simsettingmgr/esim/ui/DialogBuilder.java
com/sec/android/app/simsettingmgr/esim/EsimLockActivity.java
com/sec/android/app/simsettingmgr/Utils.java
com/sec/android/app/simsettingmgr/esim/qrcode/CaptureActivity.java
com/sec/android/app/simsettingmgr/SimDropDownPreference.java
com/sec/android/app/simsettingmgr/MultiSimCardManagerPreference.java
com/jwetherell/quick_response_code/camera/PreviewCallback.java
com/sec/android/app/simsettingmgr/NetworkStatusReceiver.java
com/sec/android/app/simsettingmgr/SimEnabler.java
com/sec/android/app/simsettingmgr/esim/ESIMManagermentActivity.java
com/samsung/euicc/lib/message/Response.java
com/sec/android/app/simsettingmgr/verInfo.java
com/sec/android/app/simsettingmgr/esim/base/BaseFragment.java
com/sec/android/app/simsettingmgr/NetworkManagement.java
com/sec/android/app/simsettingmgr/NetworkManagementSetting.java
com/jwetherell/quick_response_code/camera/AutoFocusCallback.java
com/sec/android/app/simsettingmgr/esim/EsimEventsHandler.java
com/sec/android/app/simsettingmgr/winset/SimSwitchPreference.java
com/sec/android/app/simsettingmgr/esim/oobedownload/BackgroundDownLoad.java
com/sec/android/app/simsettingmgr/esim/locks/ChooseLockSettingsHelper.java
com/jwetherell/quick_response_code/camera/CameraConfigurationManager.java
com/sec/android/app/simsettingmgr/esim/qrcode/DecodeThread.java
com/sec/android/app/simsettingmgr/esim/qrcode/DecoderActivityHandler.java
com/sec/android/app/simsettingmgr/esim/qrcode/DecodeHandler.java
High
CVSS:5.5
App can read/write to External Storage. Any App can read data written to External Storage.
MASVS: MSTG-STORAGE-2
CWE-276 Incorrect Default Permissions
M2: Insecure Data Storage
Files:
 com/sec/android/app/simsettingmgr/Utils.java
Medium
CVSS:7.4
Files may contain hardcoded sensitive information like usernames, passwords, keys etc.
MASVS: MSTG-STORAGE-14
CWE-312 Cleartext Storage of Sensitive Information
M9: Reverse Engineering
Files:
 com/sec/android/app/simsettingmgr/NetworkManagementSetting.java

Permissions analysis

Information computed with MobSF.

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.GET_TASKS retrieve running applications
Allows application to retrieve information about currently and recently running tasks. May allow malicious applications to discover private information about other applications.
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.
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.CHANGE_NETWORK_STATE change network connectivity
Allows applications to change network connectivity state.
Low android.permission.EXPAND_STATUS_BAR expand/collapse status bar
Allows application to expand or collapse the status bar.
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.
Medium android.permission.MODIFY_PHONE_STATE modify phone status
Allows the application to control the phone features of the device. An application with this permission can switch networks, turn the phone radio on and off and the like, without ever notifying you.
Medium android.permission.STATUS_BAR disable or modify status bar
Allows application to disable the status bar or add and remove system icons.
android.permission.READ_NETWORK_USAGE_HISTORY Unknown permission
Unknown permission from android reference
android.permission.READ_PRIVILEGED_PHONE_STATE Unknown permission
Unknown permission from android reference
android.permission.MANAGE_NETWORK_POLICY Unknown permission
Unknown permission from android reference
com.samsung.android.softsim.permission.RECEIVE Unknown permission
Unknown permission from android reference
com.samsung.permission.SIMHOTSWAP Unknown permission
Unknown permission from android reference
com.android.settings.permission.subscription Unknown permission
Unknown permission from android reference
com.samsung.permission.networkmanagement Unknown permission
Unknown permission from android reference
com.samsung.euicc.LPA_SERVICE_ACCESS Unknown permission
Unknown permission from android reference
android.permission.WRITE_EMBEDDED_SUBSCRIPTIONS Unknown permission
Unknown permission from android reference
android.permission.ACCESS_KEYGUARD_SECURE_STORAGE Unknown permission
Unknown permission from android reference

Threat analysis

Information computed with Quark-Engine.

Confidence:
100%
Query the current data network type
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%
Open a file from given absolute path of the file
Confidence:
100%
Send notification
Confidence:
100%
Monitor the broadcast action events (BOOT_COMPLETED)
Confidence:
100%
Get last known location of the device
Confidence:
100%
Get the current WIFI information
Confidence:
100%
Get location of the device
Confidence:
100%
Method reflection
Confidence:
100%
Hide the current app's icon
Confidence:
100%
Query WiFi information and WiFi Mac Address
Confidence:
100%
Get the time of current location
Confidence:
100%
Initialize class object dynamically
Confidence:
100%
Get the current WiFi MAC address
Confidence:
80%
Load external class
Confidence:
80%
Implicit intent(view a web page, make a phone call, etc.) via setData
Confidence:
80%
Get absolute path of the file and store in string
Confidence:
80%
Get calendar information
Confidence:
80%
Query data from URI (SMS, CALLLOGS)
Confidence:
80%
Query the ICCID number
Confidence:
80%
Get resource file from res/raw directory
Confidence:
80%
Read sensitive data(SMS, CALLLOG, etc)

Behavior analysis

Information computed with MobSF.

Android notifications
       com/sec/android/app/simsettingmgr/NetworkStatusReceiver.java
Get cell location
       com/sec/android/app/simsettingmgr/Utils.java
Get installed applications
       com/sec/android/app/simsettingmgr/esim/qrcode/CaptureActivity.java
Get phone number
       com/sec/android/app/simsettingmgr/MultiSimCardManagerPreference.java
Get sim operator name
       com/sec/android/app/simsettingmgr/Utils.java
com/sec/android/app/simsettingmgr/MultiSimCardManagerPreference.java
Get sim provider details
       com/sec/android/app/simsettingmgr/NetworkStatusReceiver.java
com/sec/android/app/simsettingmgr/Utils.java
com/sec/android/app/simsettingmgr/MultiSimCardManagerPreference.java
Get software version, imei/sv etc
       com/sec/android/app/simsettingmgr/Utils.java
Get subscriber id
       com/sec/android/app/simsettingmgr/NetworkStatusReceiver.java
com/sec/android/app/simsettingmgr/Utils.java
Get system service
       com/sec/android/app/simsettingmgr/esim/EsimEventsHandler.java
com/sec/android/app/simsettingmgr/NetworkStatusReceiver.java
com/sec/android/app/simsettingmgr/esim/ESIMManagermentActivity.java
com/sec/android/app/simsettingmgr/esim/oobedownload/BackgroundDownLoad.java
com/sec/android/app/simsettingmgr/Utils.java
com/sec/android/app/simsettingmgr/SimDropDownPreference.java
com/jwetherell/quick_response_code/camera/CameraConfigurationManager.java
com/sec/android/app/simsettingmgr/MultiSimCardManagerPreference.java
com/sec/android/app/simsettingmgr/NetworkManagement.java
Get wifi details
       com/sec/android/app/simsettingmgr/Utils.java
Inter process communication
       com/sec/android/app/simsettingmgr/NetworkManagementSetting.java
com/sec/android/app/simsettingmgr/esim/EsimEventsHandler.java
com/sec/android/app/simsettingmgr/esim/EsimLockActivity.java
com/sec/android/app/simsettingmgr/esim/oobedownload/BackgroundDownLoad.java
com/sec/android/app/simsettingmgr/esim/locks/ChooseLockSettingsHelper.java
com/sec/android/app/simsettingmgr/Utils.java
com/sec/android/app/simsettingmgr/esim/qrcode/CaptureActivity.java
com/sec/android/app/simsettingmgr/SimDropDownPreference.java
com/sec/android/app/simsettingmgr/MultiSimCardManagerPreference.java
com/sec/android/app/simsettingmgr/esim/qrcode/DecoderActivityHandler.java
com/sec/android/app/simsettingmgr/NetworkStatusReceiver.java
com/sec/android/app/simsettingmgr/SimEnabler.java
com/sec/android/app/simsettingmgr/esim/ESIMManagermentActivity.java
com/sec/android/app/simsettingmgr/esim/base/BaseFragment.java
com/sec/android/app/simsettingmgr/NetworkManagement.java
Local file i/o operations
       com/sec/android/app/simsettingmgr/NetworkManagementSetting.java
com/sec/android/app/simsettingmgr/NetworkStatusReceiver.java
com/sec/android/app/simsettingmgr/SimEnabler.java
com/sec/android/app/simsettingmgr/esim/utils/BasePreferenceUtil.java
com/sec/android/app/simsettingmgr/NetworkManagement.java
Query database of sms, contacts etc
       com/sec/android/app/simsettingmgr/Utils.java
com/sec/android/app/simsettingmgr/NetworkManagement.java
Sending broadcast
       com/sec/android/app/simsettingmgr/NetworkManagementSetting.java
com/sec/android/app/simsettingmgr/NetworkStatusReceiver.java
com/sec/android/app/simsettingmgr/SimEnabler.java
com/sec/android/app/simsettingmgr/esim/oobedownload/BackgroundDownLoad.java
com/sec/android/app/simsettingmgr/Utils.java
com/sec/android/app/simsettingmgr/SimDropDownPreference.java
com/sec/android/app/simsettingmgr/NetworkManagement.java
Starting activity
       com/sec/android/app/simsettingmgr/esim/EsimEventsHandler.java
com/sec/android/app/simsettingmgr/NetworkStatusReceiver.java
com/sec/android/app/simsettingmgr/esim/ESIMManagermentActivity.java
com/sec/android/app/simsettingmgr/esim/oobedownload/BackgroundDownLoad.java
com/sec/android/app/simsettingmgr/esim/locks/ChooseLockSettingsHelper.java
com/sec/android/app/simsettingmgr/esim/qrcode/CaptureActivity.java
com/sec/android/app/simsettingmgr/SimDropDownPreference.java
com/sec/android/app/simsettingmgr/MultiSimCardManagerPreference.java
com/sec/android/app/simsettingmgr/NetworkManagement.java
Starting service
       com/sec/android/app/simsettingmgr/esim/base/BaseFragment.java
com/sec/android/app/simsettingmgr/esim/oobedownload/BackgroundDownLoad.java
com/sec/android/app/simsettingmgr/NetworkManagement.java

Control flow graphs analysis

Information computed by Pithus.

The application probably gets the IMEI of the phone

The application probably determines the location based on cell towers

The application probably gets the phone number associated to the SIM card

The application probably gets the Wi-Fi connection information

The application probably gets the network connections information

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

The application probably listens accessibility events