0/61

Threat

com.samsung.android.app.taskedge

Tasks edge

Analyzed on 2022-05-27T13:32:46.419703

18

permissions

4

activities

0

services

5

receivers

2

domains

File sums

MD5 9072b45fb9cb755906d4f5882d1959af
SHA1 9f20d4362e736f804e5615639d86ab3f6459cfdb
SHA256 3527020698246e2d7fdc1099e2da602e20b39d3136308fb3c9fcf526d9c8fa07
Size 1.06MB

APKiD

Information computed with APKiD.

/tmp/tmpwa58rgmo!classes.dex
anti_vm
  • Build.MODEL check
  • Build.MANUFACTURER check
  • SIM operator check
manipulator
  • dexmerge
compiler
  • dx (possible dexmerge)

SSdeep

Information computed with ssdeep.

APK file 24576:PUdFX6uVpf5iLLccEKixUvEnGzK+de4tCMEG+mAT:PUdFX6uPf5i3cLZ0EwZde4YMk9
Manifest 384:d2SDgSdXunrSt7Agx5y4hkAUXUhBlRlWeAV+E05eRAJMSoORjkBjMPJ1S1Q1/1M3:…
classes.dex 24576:nT1GN1waSCdhl14y1IvjXMt8yh9s2GbKA1r:5a91P1yjEs2GL

Dexofuzzy

Information computed with Dexofuzzy.

APK file 384:8CYM/hxP28S64mxAw5n9+tQkDy2pPcTLQ2mwBFWN2FEUIs2hHoGnb3WLpPq:8Co8J…
classes.dex 384:8CYM/hxP28S64mxAw5n9+tQkDy2pPcTLQ2mwBFWN2FEUIs2hHoGnb3WLpPq:8Co8J…

APK details

Information computed with AndroGuard and Pithus.

Package com.samsung.android.app.taskedge
App name Tasks edge
Version name 3.3.49
Version code 334907000
SDK 25 - 25
UAID 44e035dfc5937139bcca8f64d1ea3f2d32024bc9
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.

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 (com.samsung.android.app.taskedge.settings.TaskEdgeSettings) 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 (com.samsung.android.app.taskedge.edgepanel.TaskEdgePanelProvider) is Protected by a permission, but the protection level of the permission should be checked.
Permission: com.samsung.android.app.cocktailbarservice.permission.ACCESS_PANEL [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 Broadcast Receiver (com.samsung.android.app.taskedge.shortcut.UninstallShortcutReceiver) is Protected by a permission, but the protection level of the permission should be checked.
Permission: com.android.launcher.permission.UNINSTALL_SHORTCUT [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 Content Provider (com.samsung.android.app.taskedge.data.TaskEdgeDataProvider) is not Protected. [android:exported=true]
A Content Provider is found to be shared with other apps on the device therefore leaving it accessible to any other application on the device.
High Broadcast Receiver (com.samsung.android.app.taskedge.backup.TaskEdgeBRReceiver) is Protected by a permission, but the protection level of the permission should be checked.
Permission: com.wssnps.permission.COM_WSSNPS [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.

Activities

Information computed with AndroGuard. 

com.samsung.android.app.taskedge.settings.TaskEdgeSettings
com.samsung.android.app.taskedge.edgepanel.TaskEdgeDummyActivity
com.samsung.android.app.taskedge.ui.DeleteShortcutAlertDialog
com.samsung.android.app.taskedge.ui.EnableOnehandDialog

Receivers

Information computed with AndroGuard. 

com.samsung.android.app.taskedge.edgepanel.TaskEdgePanelProvider
com.samsung.android.app.taskedge.shortcut.UninstallShortcutReceiver
com.samsung.android.app.taskedge.backup.TaskEdgeBRReceiver
com.samsung.android.app.taskedge.shortcut.ShortcutInfoReceiver
com.samsung.android.app.taskedge.backup.RestoreContactShortcutReceiver

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, 4:01 a.m.
Last submission on VT April 27, 2021, 4:01 a.m.
Upload on Pithus May 27, 2022, 1:32 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 invoke platform-provided 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 ['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 encrypt some transmitted data with HTTPS/TLS/SSH between itself and another trusted IT product.
Protection of Data in Transit
FCS_RBG_EXT.2.1
FCS_RBG_EXT.2.2		 The application perform all deterministic random bit generation (DRBG) services in accordance with NIST Special Publication 800-90A using Hash_DRBG. The deterministic RBG is seeded by an entropy source that accumulates entropy from a platform-based DRBG and a software-based noise source, with a minimum of 256 bits of entropy at least equal to the greatest security strength (according to NIST SP 800-57) of the keys and hashes that it will generate.
Random Bit Generation from Application
FCS_CKM.1.1(3)
FCS_CKM.1.2(3)		 A password/passphrase shall perform [Password-based Key Derivation Functions] in accordance with a specified cryptographic algorithm..
Password Conditioning
FCS_COP.1.1(1) The application perform encryption/decryption in accordance with a specified cryptographic algorithm AES-CBC (as defined in NIST SP 800-38A) mode or AES-GCM (as defined in NIST SP 800-38D) and cryptographic key sizes 256-bit/128-bit.
Cryptographic Operation - Encryption/Decryption
FCS_COP.1.1(2) The application perform cryptographic hashing services in accordance with a specified cryptographic algorithm SHA-1/SHA-256/SHA-384/SHA-512 and message digest sizes 160/256/384/512 bits.
Cryptographic Operation - Hashing
FCS_HTTPS_EXT.1.1 The application implement the HTTPS protocol that complies with RFC 2818.
HTTPS Protocol
FCS_HTTPS_EXT.1.2 The application implement HTTPS using TLS.
HTTPS Protocol
FIA_X509_EXT.2.1 The application use X.509v3 certificates as defined by RFC 5280 to support authentication for HTTPS , TLS.
X.509 Certificate Authentication
FCS_CKM.1.1(2) The application shall generate symmetric cryptographic keys using a Random Bit Generator as specified in FCS_RBG_EXT.1 and specified cryptographic key sizes 128 bit or 256 bit.
Cryptographic Symmetric Key Generation

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/samsung/android/app/taskedge/update/CheckForUpdates.java
 com/samsung/android/app/taskedge/edgepanel/TaskEdgeDummyActivity.java
 com/samsung/android/app/taskedge/util/Utils.java
 com/samsung/android/app/taskedge/Feature.java
 com/samsung/android/app/taskedge/backup/TaskEdgeBRReceiver.java
 com/samsung/android/app/taskedge/util/IntentUtils.java
 com/samsung/android/app/taskedge/backup/TaskEdgeBRThread.java
 com/samsung/android/app/taskedge/util/SAUtils.java
 com/samsung/android/app/taskedge/edgepanel/TaskEdgePanelProvider.java
 com/samsung/android/app/taskedge/edgepanel/TaskPanelContainer.java
 com/samsung/android/app/taskedge/shortcut/UninstallShortcutReceiver.java
 com/samsung/android/app/taskedge/data/TaskEdgeDBHelper.java
 com/samsung/android/app/taskedge/util/ContextLoggingManager.java
 com/samsung/android/app/taskedge/backup/BRUtils.java
 com/samsung/android/app/taskedge/reflection/RefSemExecutableManager.java
 com/samsung/android/app/taskedge/data/PresetTasks.java
 com/samsung/context/sdk/samsunganalytics/a/i/a.java
 com/samsung/android/app/taskedge/settings/TaskEdgeSettings.java
 com/samsung/android/app/taskedge/shortcut/ShortcutInfoReceiver.java
 com/samsung/android/app/taskedge/backup/Encryption.java
 com/samsung/android/app/taskedge/backup/RestoreContactShortcutReceiver.java
 com/samsung/android/app/taskedge/data/AbstractDbWrapper.java
 com/samsung/android/app/taskedge/reflection/AbstractBaseReflection.java
 com/samsung/android/app/taskedge/backup/GenerateXML.java
 com/samsung/android/app/taskedge/data/ExecutableItem.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/samsung/android/app/taskedge/Constants.java
 com/samsung/android/app/taskedge/util/IntentUtils.java
 com/samsung/android/app/taskedge/backup/TaskEdgeBRThread.java
Medium
CVSS:5.9
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.
CWE-89 Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection')
M7: Client Code Quality
Files: 
 com/samsung/android/app/taskedge/data/DatabaseHelper.java
 com/samsung/context/sdk/samsunganalytics/a/g/c/a/a.java
 com/samsung/context/sdk/samsunganalytics/a/g/c/a/b.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/samsung/android/app/taskedge/Constants.java
 com/samsung/android/app/taskedge/update/TargetInfo.java
High
CVSS:7.4
The App uses the encryption mode CBC with PKCS5/PKCS7 padding. This configuration is vulnerable to padding oracle attacks.
MASVS: MSTG-CRYPTO-3
CWE-649 Reliance on Obfuscation or Encryption of Security-Relevant Inputs without Integrity Checking
M5: Insufficient Cryptography
Files: 
 com/samsung/android/app/taskedge/backup/Encryption.java
Medium
CVSS:5.9
SHA-1 is a weak hash known to have hash collisions.
MASVS: MSTG-CRYPTO-4
CWE-327 Use of a Broken or Risky Cryptographic Algorithm
M5: Insufficient Cryptography
Files: 
 com/samsung/android/app/taskedge/backup/Encryption.java
Info
CVSS:0
This App uses SSL certificate pinning to detect or prevent MITM attacks in secure communication channel.
MASVS: MSTG-NETWORK-4
Files: 
 com/samsung/context/sdk/samsunganalytics/a/f/a.java
Pygal Ireland: 100 United States: 100

Map computed by Pithus.

Domains analysis

Information computed with MobSF.

US dc.di.atlas.samsung.com 34.120.24.208
IE vas.samsungapps.com 52.31.171.202

URL analysis

Information computed with MobSF.

https://dc.di.atlas.samsung.com
Defined in com/samsung/context/sdk/samsunganalytics/a/a/c.java
http://vas.samsungapps.com/stub/stubUpdateCheck.as
Defined in com/samsung/android/app/taskedge/update/CheckForUpdates.java

Permissions analysis

Information computed with MobSF.

High android.permission.READ_EXTERNAL_STORAGE read external storage contents
Allows an application to read from external storage.
High android.permission.WRITE_EXTERNAL_STORAGE read/modify/delete external storage contents
Allows an application to write to external storage.
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.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.
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.INTERNET full Internet access
Allows an application to create network sockets.
Medium android.permission.STOP_APP_SWITCHES prevent app switches
Prevents the user from switching to another application.
Medium android.permission.INJECT_EVENTS press keys and control buttons
Allows an application to deliver its own input events (key presses, etc.) to other applications. Malicious applications can use this to take over the phone.
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.
com.samsung.android.providers.context.permission.WRITE_USE_APP_FEATURE_SURVEY Unknown permission
Unknown permission from android reference
android.permission.START_ANY_ACTIVITY Unknown permission
Unknown permission from android reference
com.wssnps.permission.COM_WSSNPS Unknown permission
Unknown permission from android reference
com.android.launcher.permission.INSTALL_SHORTCUT Unknown permission
Unknown permission from android reference
com.samsung.android.launcher.permission.READ_SETTINGS Unknown permission
Unknown permission from android reference
android.permission.INTERACT_ACROSS_USERS_FULL Unknown permission
Unknown permission from android reference
com.sec.spp.permission.TOKEN_57a45ab59657f249c5f58dc7e94a409312be69aa0db60697e611e7413a2d… Unknown permission
Unknown permission from android reference
com.samsung.android.app.cocktailbarservice.permission.ACCESS_PANEL Unknown permission
Unknown permission from android reference

Threat analysis

Information computed with Quark-Engine.

Confidence:
100%
Method reflection
Confidence:
100%
Retrieve data from broadcast
Confidence:
100%
Read sensitive data(SMS, CALLLOG, etc)
Confidence:
100%
Monitor the broadcast action events (BOOT_COMPLETED)
Confidence:
100%
Get absolute path of the file and store in string
Confidence:
100%
Method reflection
Confidence:
100%
Check the list of currently running applications
Confidence:
100%
Get resource file from res/raw directory
Confidence:
80%
Read file and put it into a stream
Confidence:
80%
Initialize bitmap object and compress data (e.g. JPEG) into bitmap object

Behavior analysis

Information computed with MobSF.

Android notifications 
       com/samsung/android/app/taskedge/settings/TaskEdgeSettings.java
       com/samsung/android/app/taskedge/shortcut/ShortcutInfoReceiver.java
Content provider 
       com/samsung/android/app/taskedge/data/TaskEdgeDataProvider.java
Crypto 
       com/samsung/android/app/taskedge/backup/Encryption.java
Get installed applications 
       com/samsung/android/app/taskedge/util/Utils.java
Get sim provider details 
       com/samsung/context/sdk/samsunganalytics/a/b/a.java
       com/samsung/android/app/taskedge/update/TargetInfo.java
Get system service 
       com/samsung/android/app/taskedge/update/CheckForUpdates.java
       com/samsung/android/app/taskedge/data/PresetTasks.java
       com/samsung/android/app/taskedge/util/Utils.java
       com/samsung/android/app/taskedge/settings/TaskEdgeSettings.java
       com/samsung/android/app/taskedge/shortcut/ShortcutInfoReceiver.java
       com/samsung/context/sdk/samsunganalytics/a/g/b/b.java
       com/samsung/android/app/taskedge/data/ShortcutInfoItem.java
       com/samsung/android/app/taskedge/edgepanel/TaskEdgePanelProvider.java
       com/samsung/android/app/taskedge/update/TargetInfo.java
       com/samsung/context/sdk/samsunganalytics/a/b/a.java
       com/samsung/context/sdk/samsunganalytics/a/e/e.java
       com/samsung/android/app/taskedge/edgepanel/TaskPanelContainer.java
       com/samsung/android/app/taskedge/data/ExecutableItem.java
Https connection 
       com/samsung/context/sdk/samsunganalytics/a/g/b/a.java
       com/samsung/context/sdk/samsunganalytics/a/e/c.java
Inter process communication 
       com/samsung/android/app/taskedge/update/CheckForUpdates.java
       com/samsung/android/app/taskedge/edgepanel/TaskEdgeDummyActivity.java
       com/samsung/android/app/taskedge/data/LauncherItem.java
       com/samsung/android/app/taskedge/util/Utils.java
       com/samsung/android/app/taskedge/backup/TaskEdgeBRReceiver.java
       com/samsung/android/app/taskedge/backup/TaskEdgeXmlParser.java
       com/samsung/android/app/taskedge/util/IntentUtils.java
       com/samsung/android/app/taskedge/backup/TaskEdgeBRThread.java
       com/samsung/android/app/taskedge/edgepanel/TaskEdgePanelProvider.java
       com/samsung/android/app/taskedge/edgepanel/TaskPanelContainer.java
       com/samsung/android/app/taskedge/shortcut/UninstallShortcutReceiver.java
       com/sec/spp/push/dlc/api/IDlcService.java
       com/samsung/android/app/taskedge/data/TaskEdgeDBHelper.java
       com/samsung/android/app/taskedge/util/ContextLoggingManager.java
       com/samsung/android/app/taskedge/ui/EnableOnehandDialog.java
       com/samsung/context/sdk/samsunganalytics/a/g/a/a.java
       com/samsung/android/app/taskedge/backup/BRUtils.java
       com/samsung/android/app/taskedge/data/CombinationItem.java
       com/samsung/android/app/taskedge/reflection/RefSemExecutableManager.java
       com/samsung/android/app/taskedge/reflection/ActivityReflection.java
       com/samsung/android/app/taskedge/settings/TaskEdgeSettings.java
       com/samsung/android/app/taskedge/shortcut/ShortcutInfoReceiver.java
       com/samsung/android/app/taskedge/ui/DeleteShortcutAlertDialog.java
       com/samsung/android/app/taskedge/backup/RestoreContactShortcutReceiver.java
       com/samsung/context/sdk/samsunganalytics/a/b.java
       com/samsung/context/sdk/samsunganalytics/a/e/e.java
       com/samsung/android/app/taskedge/backup/GenerateXML.java
       com/samsung/android/app/taskedge/backup/TaskEdgeBackupValue.java
Java reflection 
       com/samsung/android/app/taskedge/reflection/RefSemExecutableManager.java
       com/samsung/android/app/taskedge/reflection/AbstractBaseReflection.java
       com/samsung/context/sdk/samsunganalytics/a/e/e.java
       com/samsung/android/app/taskedge/data/ShortcutInfoItem.java
Local file i/o operations 
       com/samsung/android/app/taskedge/update/CheckForUpdates.java
       com/samsung/android/app/taskedge/backup/BRUtils.java
       com/samsung/android/app/taskedge/util/Utils.java
       com/samsung/android/app/taskedge/settings/TaskEdgeSettings.java
       com/samsung/android/app/taskedge/shortcut/ShortcutInfoReceiver.java
       com/samsung/android/app/taskedge/util/SAUtils.java
       com/samsung/android/app/taskedge/edgepanel/TaskEdgePanelProvider.java
       com/samsung/android/app/taskedge/backup/RestoreContactShortcutReceiver.java
       com/samsung/context/sdk/samsunganalytics/a/b.java
       com/samsung/context/sdk/samsunganalytics/a/i/c.java
       com/samsung/android/app/taskedge/shortcut/UninstallShortcutReceiver.java
       com/samsung/android/app/taskedge/data/TaskEdgeDBHelper.java
       com/samsung/android/app/taskedge/edgepanel/TaskHelpContainer.java
       com/samsung/context/sdk/samsunganalytics/a/h/c.java
Message digest 
       com/samsung/context/sdk/samsunganalytics/a/e/e.java
       com/samsung/android/app/taskedge/backup/Encryption.java
Query database of sms, contacts etc 
       com/samsung/android/app/taskedge/data/AbstractDbWrapper.java
Sending broadcast 
       com/samsung/android/app/taskedge/util/Utils.java
       com/samsung/android/app/taskedge/edgepanel/TaskPanelContainer.java
       com/samsung/android/app/taskedge/util/ContextLoggingManager.java
       com/samsung/android/app/taskedge/backup/TaskEdgeBRThread.java
       com/samsung/android/app/taskedge/backup/RestoreContactShortcutReceiver.java
       com/samsung/context/sdk/samsunganalytics/a/b.java
       com/samsung/context/sdk/samsunganalytics/a/g/a/a.java
Starting activity 
       com/samsung/android/app/taskedge/update/CheckForUpdates.java
       com/samsung/android/app/taskedge/edgepanel/TaskEdgeDummyActivity.java
       com/samsung/android/app/taskedge/settings/TaskEdgeSettings.java
       com/samsung/android/app/taskedge/edgepanel/TaskEdgePanelProvider.java
Starting service 
       com/samsung/android/app/taskedge/edgepanel/TaskEdgePanelProvider.java
       com/samsung/context/sdk/samsunganalytics/a/g/a/a.java
Url connection to file/http/https/ftp/jar 
       com/samsung/android/app/taskedge/update/CheckForUpdates.java

Control flow graphs analysis

Information computed by Pithus.

The application probably lists running applications

The application probably dynamically loads code

The application probably gets different information regarding the telephony capabilities

The application probably gets the network connections information

The application probably uses cryptography

The application probably creates an accessibility service

The application probably listens accessibility events