Malware Analysis Report

2024-12-01 03:16

Sample ID 240723-s1kg2szfka
Target chinhphu0629.apk
SHA256 f6aaeed90d51f1d3c270c9b9ca9f0df89f6af484cf657b2edc1d2f4262820a2c
Tags
banker collection credential_access discovery evasion impact persistence golddigger
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK

Mobile Matrix V15

Analysis: static1

Detonation Overview

Signatures

Analysis: behavioral3

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis: behavioral4

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis: behavioral1

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis: behavioral2

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis Overview

score
10/10

SHA256

f6aaeed90d51f1d3c270c9b9ca9f0df89f6af484cf657b2edc1d2f4262820a2c

Threat Level: Known bad

The file chinhphu0629.apk was found to be: Known bad.

Malicious Activity Summary

banker collection credential_access discovery evasion impact persistence golddigger

GoldDigger payload

Golddigger family

Obtains sensitive information copied to the device clipboard

Makes use of the framework's Accessibility service

Queries a list of all the installed applications on the device (Might be used in an attempt to overlay legitimate apps)

Requests dangerous framework permissions

Declares broadcast receivers with permission to handle system events

Acquires the wake lock

Declares services with permission to bind to the system

Requests enabling of the accessibility settings.

Queries the mobile country code (MCC)

Makes use of the framework's foreground persistence service

Uses Crypto APIs (Might try to encrypt user data)

Registers a broadcast receiver at runtime (usually for listening for system events)

Checks memory information

Checks CPU information

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-07-23 15:35

Signatures

GoldDigger payload

Description Indicator Process Target
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A

Golddigger family

golddigger

Declares broadcast receivers with permission to handle system events

Description Indicator Process Target
Required by device admin receivers to bind with the system. Allows apps to manage device administration features. android.permission.BIND_DEVICE_ADMIN N/A N/A

Declares services with permission to bind to the system

Description Indicator Process Target
Required by accessibility services to bind with the system. Allows apps to access accessibility features. android.permission.BIND_ACCESSIBILITY_SERVICE N/A N/A
Required by wallpaper services to bind with the system. Allows apps to provide live wallpapers. android.permission.BIND_WALLPAPER N/A N/A

Requests dangerous framework permissions

Description Indicator Process Target
Allows an app to post notifications. android.permission.POST_NOTIFICATIONS N/A N/A
Allows an application a broad access to external storage in scoped storage. android.permission.MANAGE_EXTERNAL_STORAGE N/A N/A
Allows an application to write to external storage. android.permission.WRITE_EXTERNAL_STORAGE N/A N/A
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 N/A N/A
Allows an application to read or write the system settings. android.permission.WRITE_SETTINGS N/A N/A
Allows an application to receive SMS messages. android.permission.RECEIVE_SMS N/A N/A
Allows an application to read from external storage. android.permission.READ_EXTERNAL_STORAGE N/A N/A
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 N/A N/A
Allows an application to read SMS messages. android.permission.READ_SMS N/A N/A
Allows an application to send SMS messages. android.permission.SEND_SMS N/A N/A
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 N/A N/A
Allows an application to request installing packages. android.permission.REQUEST_INSTALL_PACKAGES N/A N/A
Allows an application to collect component usage statistics. android.permission.PACKAGE_USAGE_STATS N/A N/A
Allows access to the list of accounts in the Accounts Service. android.permission.GET_ACCOUNTS N/A N/A
Allows applications to use exact alarm APIs. android.permission.SCHEDULE_EXACT_ALARM N/A N/A

Analysis: behavioral3

Detonation Overview

Submitted

2024-07-23 15:35

Reported

2024-07-23 15:47

Platform

android-33-x64-arm64-20240624-en

Max time kernel

329s

Max time network

339s

Command Line

com.ac.apck

Signatures

Makes use of the framework's Accessibility service

collection evasion credential_access
Description Indicator Process Target
Framework service call android.accessibilityservice.IAccessibilityServiceConnection.findAccessibilityNodeInfoByAccessibilityId N/A N/A

Obtains sensitive information copied to the device clipboard

collection credential_access impact
Description Indicator Process Target
Framework service call android.content.IClipboard.addPrimaryClipChangedListener N/A N/A

Queries a list of all the installed applications on the device (Might be used in an attempt to overlay legitimate apps)

banker discovery

Acquires the wake lock

Description Indicator Process Target
Framework service call android.os.IPowerManager.acquireWakeLock N/A N/A

Makes use of the framework's foreground persistence service

evasion persistence
Description Indicator Process Target
Framework service call android.app.IActivityManager.setServiceForeground N/A N/A
Framework service call android.app.IActivityManager.setServiceForeground N/A N/A
Framework service call android.app.IActivityManager.setServiceForeground N/A N/A
Framework service call android.app.IActivityManager.setServiceForeground N/A N/A

Requests enabling of the accessibility settings.

Description Indicator Process Target
Intent action android.settings.ACCESSIBILITY_SETTINGS N/A N/A

Uses Crypto APIs (Might try to encrypt user data)

impact
Description Indicator Process Target
Framework API call javax.crypto.Cipher.doFinal N/A N/A

Checks CPU information

Description Indicator Process Target
File opened for read /proc/cpuinfo N/A N/A

Checks memory information

Description Indicator Process Target
File opened for read /proc/meminfo N/A N/A

Processes

com.ac.apck

com.ac.apck:p1

com.ac.apck:p2

com.ac.apck:p3

com.ac.apck:s3

com.ac.apck:s1

com.ac.apck:s2

com.ac.apck:r1

com.ac.apck:r2

com.ac.apck:r3

Network

Country Destination Domain Proto
GB 142.250.187.228:443 udp
GB 142.250.187.228:443 tcp
N/A 224.0.0.251:5353 udp
US 1.1.1.1:53 android.apis.google.com udp
US 1.1.1.1:53 smgeo.cc udp
US 1.1.1.1:53 rcs-acs-tmo-us.jibe.google.com udp
US 216.239.36.155:443 rcs-acs-tmo-us.jibe.google.com tcp
GB 142.250.187.238:443 udp
US 1.1.1.1:53 remoteprovisioning.googleapis.com udp
GB 142.250.178.4:443 udp
GB 142.250.187.228:443 udp
GB 142.250.178.4:443 tcp
GB 142.250.180.10:443 remoteprovisioning.googleapis.com tcp
US 162.159.61.3:443 tcp
US 162.159.61.3:443 tcp
US 162.159.61.3:443 tcp
GB 142.250.200.3:443 tcp
US 162.159.61.3:443 udp
GB 142.250.200.3:443 udp
GB 216.58.201.98:443 tcp
GB 216.58.201.98:443 tcp
GB 216.58.201.98:443 tcp
GB 216.58.213.6:443 tcp
GB 142.250.200.2:443 tcp
GB 216.58.212.206:443 tcp
US 216.239.32.36:443 tcp
GB 172.217.169.1:443 tcp
GB 216.58.213.1:443 tcp
GB 172.217.169.1:443 tcp
GB 172.217.169.1:443 tcp
GB 172.217.169.1:443 tcp
GB 172.217.169.1:443 tcp

Files

N/A

Analysis: behavioral4

Detonation Overview

Submitted

2024-07-23 15:35

Reported

2024-07-23 15:41

Platform

android-x86-arm-20240624-en

Max time kernel

327s

Max time network

336s

Command Line

com.ac.apck:p1

Signatures

Makes use of the framework's Accessibility service

collection evasion credential_access
Description Indicator Process Target
Framework service call android.accessibilityservice.IAccessibilityServiceConnection.findAccessibilityNodeInfoByAccessibilityId N/A N/A

Queries a list of all the installed applications on the device (Might be used in an attempt to overlay legitimate apps)

banker discovery

Acquires the wake lock

Description Indicator Process Target
Framework service call android.os.IPowerManager.acquireWakeLock N/A N/A

Makes use of the framework's foreground persistence service

evasion persistence
Description Indicator Process Target
Framework service call android.app.IActivityManager.setServiceForeground N/A N/A
Framework service call android.app.IActivityManager.setServiceForeground N/A N/A
Framework service call android.app.IActivityManager.setServiceForeground N/A N/A
Framework service call android.app.IActivityManager.setServiceForeground N/A N/A

Queries the mobile country code (MCC)

discovery
Description Indicator Process Target
Framework service call com.android.internal.telephony.ITelephony.getNetworkCountryIsoForPhone N/A N/A

Requests enabling of the accessibility settings.

Description Indicator Process Target
Intent action android.settings.ACCESSIBILITY_SETTINGS N/A N/A

Registers a broadcast receiver at runtime (usually for listening for system events)

persistence
Description Indicator Process Target
Framework service call android.app.IActivityManager.registerReceiver N/A N/A

Uses Crypto APIs (Might try to encrypt user data)

impact
Description Indicator Process Target
Framework API call javax.crypto.Cipher.doFinal N/A N/A

Checks CPU information

Description Indicator Process Target
File opened for read /proc/cpuinfo N/A N/A

Checks memory information

Description Indicator Process Target
File opened for read /proc/meminfo N/A N/A

Processes

com.ac.apck:p1

com.ac.apck

com.ac.apck:p1

com.ac.apck:p2

com.ac.apck:p3

com.ac.apck:s2

com.ac.apck:s1

com.ac.apck:s3

com.ac.apck:r1

com.ac.apck:r2

com.ac.apck:r3

com.ac.apck:p1

com.ac.apck:p2

com.ac.apck:p3

com.ac.apck:r1

com.ac.apck:r2

com.ac.apck:r3

Network

Country Destination Domain Proto
N/A 224.0.0.251:5353 udp
GB 142.250.180.10:443 tcp
US 1.1.1.1:53 semanticlocation-pa.googleapis.com udp
GB 142.250.179.226:443 tcp
GB 142.250.179.238:443 tcp
GB 142.250.200.10:443 semanticlocation-pa.googleapis.com tcp
GB 142.250.187.206:443 tcp
US 1.1.1.1:53 android.apis.google.com udp
GB 172.217.16.238:443 android.apis.google.com tcp
US 1.1.1.1:53 www.youtube.com udp
GB 172.217.169.14:443 www.youtube.com udp
GB 172.217.169.14:443 www.youtube.com tcp
GB 172.217.16.238:443 www.youtube.com tcp
GB 172.217.16.238:443 www.youtube.com tcp
US 1.1.1.1:53 smgeo.cc udp
GB 216.58.213.3:80 tcp
GB 172.217.16.228:443 tcp
GB 142.250.178.14:443 www.youtube.com tcp
GB 142.250.180.3:443 tcp
GB 142.250.180.3:443 tcp
GB 142.250.178.14:443 www.youtube.com tcp
GB 142.250.180.3:443 tcp
GB 142.250.180.3:443 tcp

Files

N/A

Analysis: behavioral1

Detonation Overview

Submitted

2024-07-23 15:35

Reported

2024-07-23 15:41

Platform

android-x64-20240624-en

Max time kernel

329s

Max time network

338s

Command Line

com.ac.apck:p1

Signatures

Makes use of the framework's Accessibility service

collection evasion credential_access
Description Indicator Process Target
Framework service call android.accessibilityservice.IAccessibilityServiceConnection.findAccessibilityNodeInfoByAccessibilityId N/A N/A

Obtains sensitive information copied to the device clipboard

collection credential_access impact
Description Indicator Process Target
Framework service call android.content.IClipboard.addPrimaryClipChangedListener N/A N/A

Queries a list of all the installed applications on the device (Might be used in an attempt to overlay legitimate apps)

banker discovery

Acquires the wake lock

Description Indicator Process Target
Framework service call android.os.IPowerManager.acquireWakeLock N/A N/A

Makes use of the framework's foreground persistence service

evasion persistence
Description Indicator Process Target
Framework service call android.app.IActivityManager.setServiceForeground N/A N/A
Framework service call android.app.IActivityManager.setServiceForeground N/A N/A
Framework service call android.app.IActivityManager.setServiceForeground N/A N/A
Framework service call android.app.IActivityManager.setServiceForeground N/A N/A

Queries the mobile country code (MCC)

discovery
Description Indicator Process Target
Framework service call com.android.internal.telephony.ITelephony.getNetworkCountryIsoForPhone N/A N/A

Registers a broadcast receiver at runtime (usually for listening for system events)

persistence
Description Indicator Process Target
Framework service call android.app.IActivityManager.registerReceiver N/A N/A

Uses Crypto APIs (Might try to encrypt user data)

impact
Description Indicator Process Target
Framework API call javax.crypto.Cipher.doFinal N/A N/A

Checks CPU information

Description Indicator Process Target
File opened for read /proc/cpuinfo N/A N/A

Checks memory information

Description Indicator Process Target
File opened for read /proc/meminfo N/A N/A

Processes

com.ac.apck:p1

com.ac.apck

com.ac.apck:p1

com.ac.apck:p2

com.ac.apck:p3

com.ac.apck:s1

com.ac.apck:s2

com.ac.apck:s3

com.ac.apck:r1

com.ac.apck:r2

com.ac.apck:r3

com.ac.apck:p1

com.ac.apck:p2

com.ac.apck:p3

com.ac.apck:r1

com.ac.apck:r2

com.ac.apck:r3

Network

Country Destination Domain Proto
N/A 224.0.0.251:5353 udp
US 1.1.1.1:53 ssl.google-analytics.com udp
GB 142.250.187.232:443 ssl.google-analytics.com tcp
US 1.1.1.1:53 smgeo.cc udp
GB 142.250.200.46:443 tcp
US 1.1.1.1:53 android.apis.google.com udp
US 1.1.1.1:53 android.apis.google.com udp
GB 142.250.200.14:443 android.apis.google.com tcp
GB 216.58.212.206:443 android.apis.google.com tcp
GB 142.250.187.228:443 tcp
GB 142.250.187.228:443 tcp
GB 142.250.178.2:443 tcp
GB 172.217.16.227:443 tcp
GB 216.58.213.14:443 tcp

Files

N/A

Analysis: behavioral2

Detonation Overview

Submitted

2024-07-23 15:35

Reported

2024-07-23 15:41

Platform

android-x64-arm64-20240624-en

Max time kernel

328s

Max time network

338s

Command Line

com.ac.apck:p2

Signatures

Makes use of the framework's Accessibility service

collection evasion credential_access
Description Indicator Process Target
Framework service call android.accessibilityservice.IAccessibilityServiceConnection.findAccessibilityNodeInfoByAccessibilityId N/A N/A

Obtains sensitive information copied to the device clipboard

collection credential_access impact
Description Indicator Process Target
Framework service call android.content.IClipboard.addPrimaryClipChangedListener N/A N/A

Queries a list of all the installed applications on the device (Might be used in an attempt to overlay legitimate apps)

banker discovery

Acquires the wake lock

Description Indicator Process Target
Framework service call android.os.IPowerManager.acquireWakeLock N/A N/A

Makes use of the framework's foreground persistence service

evasion persistence
Description Indicator Process Target
Framework service call android.app.IActivityManager.setServiceForeground N/A N/A
Framework service call android.app.IActivityManager.setServiceForeground N/A N/A
Framework service call android.app.IActivityManager.setServiceForeground N/A N/A
Framework service call android.app.IActivityManager.setServiceForeground N/A N/A

Requests enabling of the accessibility settings.

Description Indicator Process Target
Intent action android.settings.ACCESSIBILITY_SETTINGS N/A N/A

Uses Crypto APIs (Might try to encrypt user data)

impact
Description Indicator Process Target
Framework API call javax.crypto.Cipher.doFinal N/A N/A

Checks CPU information

Description Indicator Process Target
File opened for read /proc/cpuinfo N/A N/A

Checks memory information

Description Indicator Process Target
File opened for read /proc/meminfo N/A N/A

Processes

com.ac.apck:p2

com.ac.apck

com.ac.apck:p1

com.ac.apck:p2

com.ac.apck:p3

com.ac.apck:s1

com.ac.apck:s2

com.ac.apck:s3

com.ac.apck:r1

com.ac.apck:r2

com.ac.apck:r3

com.ac.apck:p1

com.ac.apck:p2

com.ac.apck:p3

com.ac.apck:r1

com.ac.apck:r2

com.ac.apck:r3

Network

Country Destination Domain Proto
N/A 224.0.0.251:5353 udp
GB 142.250.187.206:443 tcp
GB 142.250.187.206:443 tcp
US 1.1.1.1:53 android.apis.google.com udp
GB 142.250.178.14:443 android.apis.google.com tcp
US 1.1.1.1:53 ssl.google-analytics.com udp
GB 142.250.200.8:443 ssl.google-analytics.com tcp
US 1.1.1.1:53 smgeo.cc udp
GB 142.250.187.228:443 tcp
GB 142.250.187.228:443 tcp
GB 142.250.200.2:443 tcp
GB 142.250.180.14:443 tcp

Files

N/A