Malicious
15
/59

Threat

org.taskservices.core

Samsung Security Services

Analyzed on 2021-07-26T12:49:01.901028

37

permissions

2

activities

3

services

2

receivers

1

domains

File sums

MD5 7af6e1f4ebc4ebc56b0bd2df7522650a
SHA1 74582c3d920332117541a9bbc6b8995fbe7e1aff
SHA256 75dc2829abb951ff970debfba9f66d4d7c6b7c48a823a911dd5874f74ac63d7b
Size 0.91MB

APKiD

Information computed with APKiD.

/tmp/tmpst_0t9m4!classes.dex
anti_vm
  • Build.MANUFACTURER check
compiler
  • unknown (please file detection issue!)

SSdeep

Information computed with ssdeep.

APK file 12288:kKB/qBqOUHbqURtijoXow/AaRBfHqdp0zRsI9mDgA9AYDWbVz:kKm0XoO/AaRxi2f9Ag2Ajbt
Manifest 192:lIQzKTRdkpmR99o9RwAA2p3c38i+J3ynJPfIdO8Ab+ZAguMiteXQ5gMCFBMKmpgl:…
classes.dex 12288:eSbwxLGdkB0R7i0tbatmCJLUGxm7+gcqoJmDvJo9JB:eVGd0M+L6gIDxYB

Dexofuzzy

Information computed with Dexofuzzy.

APK file 1536:57RG458xml4SIVjXFZeMKE2R/FasXSQvPfMcJJjixHlC:57rl4XjcRR9pSQvPkcn…
classes.dex 1536:57RG458xml4SIVjXFZeMKE2R/FasXSQvPfMcJJjixHlC:57rl4XjcRR9pSQvPkcn…

APK details

Information computed with AndroGuard and Pithus.

Package org.taskservices.core
App name Samsung Security Services
Version name 1.0
Version code 1
SDK 16 - 22
UAID bf07dde799c8478f4f8b6d3d77b3be806a64642d
Signature Signature V1 Signature V2 Signature V3
Frosting Not frosted
Blocks found within V2 signature:
  • 0x7109871a: Unknown
  • 0xf05368c0: Unknown
  • 0x42726577: Verity padding

Certificate details

Information computed with AndroGuard.

MD5 e9a3f6c74468ffaa98ce184418507fc8
SHA1 0c68cae8f54006ff283648dc491af07e6eac831a
SHA256 2730274f265182bbff187b1d8466983a0bdbb91a9b6f2fb9d5ba85af3272425b
Issuer Common Name: Mick Zagger, Organizational Unit: Zagger Inc., Organization: Zagger Dev., Locality: Toronto, State/Province: Toronto, Country: CA
Not before 2020-01-14T15:28:59+00:00
Not after 2045-01-07T15:28:59+00:00

Manifest analysis

Information computed with MobSF.

High Activity (org.taskservices.core.MActivity) is not Protected. [android:exported=true]
An Activity is found to be shared with other apps on the device therefore leaving it accessible to any other application on the device.
High Service (org.taskservices.core.AccService) is Protected by a permission, but the protection level of the permission should be checked.
Permission: android.permission.BIND_ACCESSIBILITY_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 (org.taskservices.core.NoteService) is Protected by a permission, but the protection level of the permission should be checked.
Permission: android.permission.BIND_NOTIFICATION_LISTENER_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 (org.taskservices.core.BootBroadcastReceiver) 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 Broadcast Receiver (org.taskservices.core.PreHandler) 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.

Main Activity

Information computed with AndroGuard.

['org.taskservices.core.MActivity', 'org.taskservices.core.ProxyActivity']

Activities

Information computed with AndroGuard.

org.taskservices.core.MActivity
org.taskservices.core.ProxyActivity

Receivers

Information computed with AndroGuard.

org.taskservices.core.BootBroadcastReceiver
org.taskservices.core.PreHandler

Services

Information computed with AndroGuard.

org.taskservices.core.CoreService
org.taskservices.core.AccService
org.taskservices.core.NoteService

Hunting matches

Information computed by Pithus.

Yara ruleset: StrongPity Android implants - updated rule
StrongPity_Android_implants
matching files:
/classes.dex

Sample timeline

Certificate valid not before Jan. 14, 2020, 3:28 p.m.
First submission on VT Jan. 23, 2021, 8:19 p.m.
Last submission on VT July 22, 2021, 6:42 a.m.
Upload on Pithus July 26, 2021, 12:49 p.m.
Certificate valid not after Jan. 7, 2045, 3:28 p.m.

VirusTotal

Score 15/59
Report https://www.virustotal.com/gui/file/75dc2829abb951ff970debfba9f66d4d7c6b7c48a823a911dd5874f74ac63d7b/detection

Most Popular AV Detections

Provided by VirusTotal

Threat name: boogr Identified 2 times

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 ['microphone', 'camera', 'network connectivity', 'location'].
Access to Platform Resources
FDP_DEC_EXT.1.2 The application has access to ['call lists', 'address book', 'calender'].
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
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_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.1.1 The application invoked platform-provided functionality to validate certificates in accordance with the following rules: ['The certificate path must terminate with a trusted CA certificate'].
X.509 Certificate Validation
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

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:
 a/d/a/a/tuygln.java
a/d/g/hqjlmk.java
a/d/b/ltymcr.java
a/a/d/itxdrx.java
a/d/b/ekoocv.java
a/d/g/nhnhpi.java
a/d/g/mqiawf.java
a/d/b/nhnhpi.java
a/d/g/a/djdeeu.java
a/a/a/a/tuygln.java
a/d/b/djdeeu.java
a/d/b/pekmek.java
a/d/a/a/ekoocv.java
a/d/g/djdeeu.java
a/d/g/itxdrx.java
a/i/a/a/ltymcr.java
a/d/g/xhtzwf.java
a/d/a/a/djdeeu.java
a/d/f/djdeeu.java
a/d/b/wedqwg.java
a/h/a/djdeeu.java
High
CVSS:7.4
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
MASVS: MSTG-NETWORK-3
CWE-295 Improper Certificate Validation
M3: Insecure Communication
Files:
 org/taskservices/core/itxdrx.java
High
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:
 org/taskservices/core/nhnhpi.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:
 org/taskservices/core/tfsdne.java

Domains analysis

Information computed with MobSF.

schemas.android.com

URL analysis

Information computed with MobSF.

http://schemas.android.com/apk/res/android
Defined in a/d/a/a/itxdrx.java

Permissions analysis

Information computed with MobSF.

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.READ_CALL_LOG Allows an application to read the user's call log.
High android.permission.READ_SMS read SMS or MMS
Allows application to read SMS messages stored on your phone or SIM card. Malicious applications may read your confidential messages.
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.WRITE_EXTERNAL_STORAGE read/modify/delete external storage contents
Allows an application to write to external storage.
High android.permission.READ_EXTERNAL_STORAGE read external storage contents
Allows an application to read from external storage.
High android.permission.GET_ACCOUNTS list accounts
Allows access to the list of accounts in the Accounts Service.
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.RECORD_AUDIO record audio
Allows application to access the audio record path.
High android.permission.PROCESS_OUTGOING_CALLS intercept outgoing calls
Allows application to process outgoing calls and change the number to be dialled. Malicious applications may monitor, redirect or prevent outgoing calls.
High android.permission.READ_HISTORY_BOOKMARKS read Browser's history and bookmarks
Allows the application to read all the URLs that the browser has visited and all of the browser's bookmarks.
High android.permission.READ_CALENDAR read calendar events
Allows an application to read all of the calendar events stored on your phone. Malicious applications can use this to send your calendar events to other people.
High android.permission.CAMERA take pictures and videos
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.
High android.permission.READ_PHONE_NUMBERS Allows read access to the device's phone number(s). This is a subset of the capabilities granted by
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.
High android.permission.MOUNT_FORMAT_FILESYSTEMS format external storage
Allows the application to format removable 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.
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.INTERNET full Internet access
Allows an application to create network sockets.
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.ACCESS_NETWORK_STATE view network status
Allows an application to view the status of all networks.
Low android.permission.WAKE_LOCK prevent phone from sleeping
Allows an application to prevent the phone from going to sleep.
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.CHANGE_NETWORK_STATE change network connectivity
Allows applications to change network connectivity state.
Low android.permission.FOREGROUND_SERVICE Allows a regular application to use Service.startForeground
Low android.permission.REQUEST_DELETE_PACKAGES Allows an application to request deleting packages.
Low android.permission.USE_FULL_SCREEN_INTENT Required for apps targeting Build.VERSION_CODES.Q that want to use notification full screen intents.
Low android.permission.MODIFY_AUDIO_SETTINGS change your audio settings
Allows application to modify global audio settings, such as volume and routing.
Low android.permission.DISABLE_KEYGUARD Allows applications to disable the keyguard if it is not secure.
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.PACKAGE_USAGE_STATS update component usage statistics
Allows the modification of collected component usage statistics. Not for use by common applications.
Medium android.permission.REBOOT force phone reboot
Allows the application to force the phone to reboot.
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.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.ACCESS_SUPERUSER Unknown permission
Unknown permission from android reference
com.android.browser.permission.READ_HISTORY_BOOKMARKS Unknown permission
Unknown permission from android reference

Threat analysis

Information computed with Quark-Engine.

Confidence:
100%
Run shell script programmably
Confidence:
100%
Implicit intent(view a web page, make a phone call, etc.)
Confidence:
100%
Find a method from given class name, usually for reflection
Confidence:
100%
Method reflection
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%
Get last known location of the device
Confidence:
100%
Get location of the device
Confidence:
100%
Query the IMEI number
Confidence:
100%
Method reflection
Confidence:
100%
Get the time of current location
Confidence:
100%
Initialize class object dynamically
Confidence:
80%
Read data and put it into a buffer stream
Confidence:
80%
Read file and put it into a stream
Confidence:
80%
Get declared method from given method name
Confidence:
80%
Open a file from given absolute path of the file
Confidence:
80%
Put data in cursor to JSON object
Confidence:
80%
Get absolute path of the file and store in string
Confidence:
80%
Executes the specified string Linux command
Confidence:
80%
Get resource file from res/raw directory

Behavior analysis

Information computed with MobSF.

Base64 decode
       a/d/a/a/dbxkcj.java
org/taskservices/core/pekmek.java
Base64 encode
       a/d/d/tuygln.java
org/taskservices/core/pekmek.java
Crypto
       org/taskservices/core/pekmek.java
Dynamic class and dexloading
       org/taskservices/core/ltymcr.java
Execute os command
       org/taskservices/core/phkyxc.java
Get device id, imei,meid/esn etc
       org/taskservices/core/tfsdne.java
Get system service
       a/d/g/mqiawf.java
a/a/d/pekmek.java
a/e/a/dbxkcj.java
org/taskservices/core/tfsdne.java
org/taskservices/core/ekoocv.java
org/taskservices/core/phkyxc.java
org/taskservices/core/dbxkcj.java
org/taskservices/core/eyfdff.java
org/taskservices/core/tuygln.java
org/taskservices/core/bplqef.java
Https connection
       org/taskservices/core/sadwoo.java
org/taskservices/core/itxdrx.java
Inter process communication
       a/d/a/tuygln.java
org/taskservices/core/MActivity.java
org/taskservices/core/CoreService.java
org/taskservices/core/ekoocv.java
org/taskservices/core/phkyxc.java
org/taskservices/core/dbxkcj.java
org/taskservices/core/PreHandler.java
org/taskservices/core/tuygln.java
org/taskservices/core/BootBroadcastReceiver.java
org/taskservices/core/ProxyActivity.java
Java reflection
       a/d/b/itxdrx.java
a/a/d/itxdrx.java
a/d/b/ekoocv.java
a/d/g/nhnhpi.java
a/d/g/mqiawf.java
a/d/b/nhnhpi.java
org/taskservices/core/phkyxc.java
org/taskservices/core/ltymcr.java
a/d/b/wedqwg.java
a/d/g/pekmek.java
a/d/b/pekmek.java
Local file i/o operations
       org/taskservices/core/nhnhpi.java
a/d/b/ltymcr.java
org/taskservices/core/tfsdne.java
Starting activity
       org/taskservices/core/phkyxc.java
org/taskservices/core/ProxyActivity.java
Starting service
       org/taskservices/core/phkyxc.java

Control flow graphs analysis

Information computed by Pithus.

The application probably dynamically loads code

The application probably gets the IMEI of the phone

The application probably gets the location based on GPS and/or Wi-Fi

The application probably uses cryptography

The application probably plays sound

The application probably makes OS calls

The application probably executes OS commands