Malware Analysis Report

2025-01-19 06:58

Sample ID 240521-1ymtdsbg7x
Target 81b13d0393d91ea8450646c1f1e26863d6b8768432fedb1da52cebcba73fcae6.bin
SHA256 81b13d0393d91ea8450646c1f1e26863d6b8768432fedb1da52cebcba73fcae6
Tags
collection credential_access evasion persistence
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

81b13d0393d91ea8450646c1f1e26863d6b8768432fedb1da52cebcba73fcae6

Threat Level: Likely malicious

The file 81b13d0393d91ea8450646c1f1e26863d6b8768432fedb1da52cebcba73fcae6.bin was found to be: Likely malicious.

Malicious Activity Summary

collection credential_access evasion persistence

Makes use of the framework's Accessibility service

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

Loads dropped Dex/Jar

Declares services with permission to bind to the system

Requests dangerous framework permissions

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-05-21 22:03

Signatures

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 an application to read from external storage. android.permission.READ_EXTERNAL_STORAGE 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 request installing packages. android.permission.REQUEST_INSTALL_PACKAGES N/A N/A

Analysis: behavioral1

Detonation Overview

Submitted

2024-05-21 22:03

Reported

2024-05-21 22:23

Platform

android-x86-arm-20240514-en

Max time kernel

12s

Max time network

168s

Command Line

com.perl.gpj

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

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

Processes

com.perl.gpj

Network

Country Destination Domain Proto
GB 142.250.187.195:443 tcp
N/A 224.0.0.251:5353 udp
US 1.1.1.1:53 down.sinhan-bank.com udp
US 172.67.134.184:443 down.sinhan-bank.com tcp
US 1.1.1.1:53 ctef503oop.freemall-kr.top udp
US 104.21.49.242:443 ctef503oop.freemall-kr.top tcp
GB 142.250.180.14:443 tcp
GB 142.250.180.14:443 tcp
US 1.1.1.1:53 android.apis.google.com udp
GB 142.250.200.14:443 android.apis.google.com tcp

Files

N/A

Analysis: behavioral2

Detonation Overview

Submitted

2024-05-21 22:03

Reported

2024-05-21 22:19

Platform

android-x64-20240514-en

Max time kernel

13s

Max time network

152s

Command Line

com.perl.gpj

Signatures

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

Processes

com.perl.gpj

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 142.250.179.232:443 ssl.google-analytics.com tcp
US 1.1.1.1:53 android.apis.google.com udp
GB 172.217.16.238:443 android.apis.google.com tcp
GB 172.217.169.14:443 tcp
US 1.1.1.1:53 down.sinhan-bank.com udp
US 104.21.6.104:443 down.sinhan-bank.com tcp
US 1.1.1.1:53 ctef503oop.freemall-kr.top udp
US 172.67.196.50:443 ctef503oop.freemall-kr.top tcp
GB 142.250.200.46:443 tcp
GB 142.250.187.194:443 tcp
GB 172.217.16.228:443 tcp
GB 172.217.16.228:443 tcp

Files

N/A

Analysis: behavioral3

Detonation Overview

Submitted

2024-05-21 22:03

Reported

2024-05-21 22:19

Platform

android-x64-arm64-20240514-en

Max time kernel

14s

Max time network

132s

Command Line

com.perl.gpj

Signatures

Loads dropped Dex/Jar

evasion
Description Indicator Process Target
N/A /system_ext/framework/androidx.window.sidecar.jar N/A N/A
N/A /system_ext/framework/androidx.window.sidecar.jar N/A N/A

Processes

com.perl.gpj

Network

Country Destination Domain Proto
N/A 224.0.0.251:5353 udp
GB 172.217.169.14:443 tcp
GB 172.217.169.14:443 tcp
US 1.1.1.1:53 android.apis.google.com udp
GB 142.250.187.238:443 android.apis.google.com tcp
US 1.1.1.1:53 ssl.google-analytics.com udp
GB 216.58.201.104:443 ssl.google-analytics.com tcp
US 1.1.1.1:53 down.sinhan-bank.com udp
US 104.21.6.104:443 down.sinhan-bank.com tcp
US 1.1.1.1:53 ctef503oop.freemall-kr.top udp
US 104.21.49.242:443 ctef503oop.freemall-kr.top tcp
GB 142.250.200.4:443 tcp
GB 142.250.200.4:443 tcp
US 1.1.1.1:53 android.apis.google.com udp
GB 216.58.212.238:443 android.apis.google.com tcp
US 1.1.1.1:53 www.google.com udp
GB 142.250.179.228:443 www.google.com tcp

Files

/system_ext/framework/androidx.window.sidecar.jar

MD5 bdf3529e80318eb14e53a5bf3720c10d
SHA1 25c9ace4b1af6e80ebb2572345972c56505969ba
SHA256 bbc8300dd1e9cd08de8f66560c1ac2c928615b72b51cef9649f88974f586d64b
SHA512 48b9c2d01171bb651b9b54826baa51f4add48431a3efd8ceb5f7cc3bcd6f8f37edf47fabb24349dd15b3a02329cd450f90a8d164bf4f8dfae554bf3b35a8a55b