Malware Analysis Report

2025-05-06 01:31

Sample ID 241103-1lf53svgke
Target target.apk
SHA256 a25bf4bdb2ed9872456af0057eb21ce31fd03d680d63a9da469519060b4814bc
Tags
banker collection credential_access discovery evasion execution impact persistence stealth trojan
score
8/10

Table of Contents

Analysis Overview

MITRE ATT&CK

Mobile Matrix V15

Analysis: static1

Detonation Overview

Signatures

Analysis: behavioral1

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis: behavioral2

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis: behavioral3

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis Overview

score
8/10

SHA256

a25bf4bdb2ed9872456af0057eb21ce31fd03d680d63a9da469519060b4814bc

Threat Level: Likely malicious

The file target.apk was found to be: Likely malicious.

Malicious Activity Summary

banker collection credential_access discovery evasion execution impact persistence stealth trojan

Removes its main activity from the application launcher

Makes use of the framework's Accessibility service

Loads dropped Dex/Jar

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

Performs UI accessibility actions on behalf of the user

Declares broadcast receivers with permission to handle system events

Requests dangerous framework permissions

Acquires the wake lock

Declares services with permission to bind to the system

Requests enabling of the accessibility settings.

Schedules tasks to execute at a specified time

Uses Crypto APIs (Might try to encrypt user data)

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-11-03 21:44

Signatures

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

Requests dangerous framework permissions

Description Indicator Process Target
Allows access to the list of accounts in the Accounts Service. android.permission.GET_ACCOUNTS N/A N/A
Allows an application to read the user's contacts data. android.permission.READ_CONTACTS N/A N/A
Allows an application to write to external storage. android.permission.WRITE_EXTERNAL_STORAGE N/A N/A
Allows an application to read from external storage. android.permission.READ_EXTERNAL_STORAGE 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 receive SMS messages. android.permission.RECEIVE_SMS N/A N/A
Allows an application to write the user's contacts data. android.permission.WRITE_CONTACTS 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

Analysis: behavioral1

Detonation Overview

Submitted

2024-11-03 21:44

Reported

2024-11-03 21:46

Platform

android-x86-arm-20240624-en

Max time kernel

139s

Max time network

145s

Command Line

artwork.differ.kitchen

Signatures

Removes its main activity from the application launcher

stealth trojan evasion
Description Indicator Process Target
N/A N/A N/A N/A

Loads dropped Dex/Jar

evasion
Description Indicator Process Target
N/A /data/user/0/artwork.differ.kitchen/app_DynamicOptDex/wumso.json N/A N/A
N/A /data/user/0/artwork.differ.kitchen/app_DynamicOptDex/wumso.json N/A N/A
N/A /data/user/0/artwork.differ.kitchen/app_DynamicOptDex/wumso.json N/A N/A
N/A /data/user/0/artwork.differ.kitchen/app_DynamicOptDex/wumso.json N/A N/A
N/A /data/user/0/artwork.differ.kitchen/app_DynamicOptDex/wumso.json N/A N/A

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

Requests enabling of the accessibility settings.

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

Schedules tasks to execute at a specified time

execution persistence
Description Indicator Process Target
Framework service call android.app.job.IJobScheduler.schedule 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

Processes

artwork.differ.kitchen

/system/bin/dex2oat --debuggable --instruction-set=x86 --instruction-set-features=ssse3,-sse4.1,-sse4.2,-avx,-avx2,-popcnt --runtime-arg -Xhidden-api-checks --runtime-arg -Xrelocate --boot-image=/system/framework/boot.art --runtime-arg -Xms64m --runtime-arg -Xmx512m --instruction-set-variant=x86 --instruction-set-features=default --inline-max-code-units=0 --compact-dex-level=none --debuggable --generate-mini-debug-info --dex-file=/data/user/0/artwork.differ.kitchen/app_DynamicOptDex/wumso.json --output-vdex-fd=42 --oat-fd=43 --oat-location=/data/user/0/artwork.differ.kitchen/app_DynamicOptDex/oat/x86/wumso.odex --compiler-filter=quicken --class-loader-context=&

artwork.differ.kitchen:cproc

Network

Country Destination Domain Proto
N/A 224.0.0.251:5353 udp
GB 216.58.213.10:443 tcp
US 1.1.1.1:53 semanticlocation-pa.googleapis.com udp
RU 185.215.113.90:80 185.215.113.90 tcp
GB 142.250.200.46:443 tcp
US 1.1.1.1:53 android.apis.google.com udp
GB 142.250.187.206:443 android.apis.google.com tcp
RU 185.215.113.90:80 185.215.113.90 tcp
RU 185.215.113.90:80 185.215.113.90 tcp
RU 185.215.113.90:80 185.215.113.90 tcp
RU 185.215.113.90:80 185.215.113.90 tcp

Files

/data/data/artwork.differ.kitchen/app_DynamicOptDex/wumso.json

MD5 697f9bc2aaa121bb62bd391658ca297b
SHA1 0877f5cf03074aa0bcf4ef08a1c1e49603d9d95e
SHA256 05e067405d0652cecbbd7efe627958de7e61b4bbaf925818acef58bfa4337336
SHA512 1533880d87096c1a8bd721cc87a3ec804b42e4e9244d3a6bb430e895b7b3eddbcf60e1dda6b50589700a7498eb3158f5d591e91b845d67e439f3f00e6149f923

/data/data/artwork.differ.kitchen/app_DynamicOptDex/wumso.json

MD5 477ff918c411653ea081fadffcf1b616
SHA1 22596bd0ac2add86520fe4c1baac0ec2d1883128
SHA256 8bd7dcc276bcd620054d13de928606eac85102bb32e1544eb3fae3a198adc71c
SHA512 56854f9ed86406f8dc3ce50adfae3824def1b0de95d0ff7b5b78e5cb0388f51a95d8df125340e8f58299c72f83a6d52a0c8c297d2fda241a5cb76b6a9e355ac2

Analysis: behavioral2

Detonation Overview

Submitted

2024-11-03 21:44

Reported

2024-11-03 21:46

Platform

android-x64-20240624-en

Max time kernel

138s

Max time network

145s

Command Line

artwork.differ.kitchen

Signatures

Removes its main activity from the application launcher

stealth trojan evasion
Description Indicator Process Target
N/A N/A N/A N/A

Loads dropped Dex/Jar

evasion
Description Indicator Process Target
N/A /data/user/0/artwork.differ.kitchen/app_DynamicOptDex/wumso.json N/A N/A
N/A /data/user/0/artwork.differ.kitchen/app_DynamicOptDex/wumso.json N/A N/A
N/A /data/user/0/artwork.differ.kitchen/app_DynamicOptDex/wumso.json N/A N/A
N/A /data/user/0/artwork.differ.kitchen/app_DynamicOptDex/wumso.json N/A N/A

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

Schedules tasks to execute at a specified time

execution persistence
Description Indicator Process Target
Framework service call android.app.job.IJobScheduler.schedule 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

Processes

artwork.differ.kitchen

artwork.differ.kitchen:cproc

Network

Country Destination Domain Proto
N/A 224.0.0.251:5353 udp
RU 185.215.113.90:80 185.215.113.90 tcp
US 1.1.1.1:53 ssl.google-analytics.com udp
GB 216.58.204.72:443 ssl.google-analytics.com tcp
GB 142.250.187.206:443 tcp
US 1.1.1.1:53 android.apis.google.com udp
GB 142.250.200.46:443 android.apis.google.com tcp
RU 185.215.113.90:80 185.215.113.90 tcp
GB 216.58.201.100:443 tcp
GB 216.58.201.100:443 tcp
RU 185.215.113.90:80 185.215.113.90 tcp
RU 185.215.113.90:80 185.215.113.90 tcp
RU 185.215.113.90:80 185.215.113.90 tcp

Files

/data/data/artwork.differ.kitchen/app_DynamicOptDex/wumso.json

MD5 697f9bc2aaa121bb62bd391658ca297b
SHA1 0877f5cf03074aa0bcf4ef08a1c1e49603d9d95e
SHA256 05e067405d0652cecbbd7efe627958de7e61b4bbaf925818acef58bfa4337336
SHA512 1533880d87096c1a8bd721cc87a3ec804b42e4e9244d3a6bb430e895b7b3eddbcf60e1dda6b50589700a7498eb3158f5d591e91b845d67e439f3f00e6149f923

/data/data/artwork.differ.kitchen/app_DynamicOptDex/wumso.json

MD5 477ff918c411653ea081fadffcf1b616
SHA1 22596bd0ac2add86520fe4c1baac0ec2d1883128
SHA256 8bd7dcc276bcd620054d13de928606eac85102bb32e1544eb3fae3a198adc71c
SHA512 56854f9ed86406f8dc3ce50adfae3824def1b0de95d0ff7b5b78e5cb0388f51a95d8df125340e8f58299c72f83a6d52a0c8c297d2fda241a5cb76b6a9e355ac2

Analysis: behavioral3

Detonation Overview

Submitted

2024-11-03 21:44

Reported

2024-11-03 21:46

Platform

android-x64-arm64-20240624-en

Max time kernel

138s

Max time network

146s

Command Line

artwork.differ.kitchen

Signatures

Removes its main activity from the application launcher

stealth trojan evasion
Description Indicator Process Target
N/A N/A N/A N/A

Loads dropped Dex/Jar

evasion
Description Indicator Process Target
N/A /data/user/0/artwork.differ.kitchen/app_DynamicOptDex/wumso.json N/A N/A
N/A /data/user/0/artwork.differ.kitchen/app_DynamicOptDex/wumso.json N/A N/A
N/A /data/user/0/artwork.differ.kitchen/app_DynamicOptDex/wumso.json N/A N/A
N/A /data/user/0/artwork.differ.kitchen/app_DynamicOptDex/wumso.json N/A N/A

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
Framework service call android.accessibilityservice.IAccessibilityServiceConnection.findAccessibilityNodeInfosByViewId N/A N/A
Framework service call android.accessibilityservice.IAccessibilityServiceConnection.findAccessibilityNodeInfosByText 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

Performs UI accessibility actions on behalf of the user

evasion
Description Indicator Process Target
N/A android.accessibilityservice.IAccessibilityServiceConnection.performGlobalAction N/A N/A

Requests enabling of the accessibility settings.

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

Schedules tasks to execute at a specified time

execution persistence
Description Indicator Process Target
Framework service call android.app.job.IJobScheduler.schedule 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

Processes

artwork.differ.kitchen

artwork.differ.kitchen:cproc

Network

Country Destination Domain Proto
GB 142.250.187.238:443 tcp
GB 142.250.187.238:443 tcp
GB 142.250.187.238:443 tcp
N/A 224.0.0.251:5353 udp
US 1.1.1.1:53 android.apis.google.com udp
RU 185.215.113.90:80 185.215.113.90 tcp
US 1.1.1.1:53 ssl.google-analytics.com udp
GB 216.58.213.8:443 ssl.google-analytics.com tcp
GB 216.58.204.78:443 android.apis.google.com tcp
RU 185.215.113.90:80 185.215.113.90 tcp
GB 142.250.200.36:443 tcp
GB 142.250.200.36:443 tcp
RU 185.215.113.90:80 185.215.113.90 tcp
RU 185.215.113.90:80 185.215.113.90 tcp
RU 185.215.113.90:80 185.215.113.90 tcp

Files

/data/user/0/artwork.differ.kitchen/app_DynamicOptDex/wumso.json

MD5 697f9bc2aaa121bb62bd391658ca297b
SHA1 0877f5cf03074aa0bcf4ef08a1c1e49603d9d95e
SHA256 05e067405d0652cecbbd7efe627958de7e61b4bbaf925818acef58bfa4337336
SHA512 1533880d87096c1a8bd721cc87a3ec804b42e4e9244d3a6bb430e895b7b3eddbcf60e1dda6b50589700a7498eb3158f5d591e91b845d67e439f3f00e6149f923

/data/user/0/artwork.differ.kitchen/app_DynamicOptDex/wumso.json

MD5 477ff918c411653ea081fadffcf1b616
SHA1 22596bd0ac2add86520fe4c1baac0ec2d1883128
SHA256 8bd7dcc276bcd620054d13de928606eac85102bb32e1544eb3fae3a198adc71c
SHA512 56854f9ed86406f8dc3ce50adfae3824def1b0de95d0ff7b5b78e5cb0388f51a95d8df125340e8f58299c72f83a6d52a0c8c297d2fda241a5cb76b6a9e355ac2