Malware Analysis Report

2024-07-28 14:48

Sample ID 240616-3t7zwathmh
Target 82b7101fb1b4dd4cae1390c619bbced74677c8b1971ae62f6e063a1d1fba0a43.bin
SHA256 82b7101fb1b4dd4cae1390c619bbced74677c8b1971ae62f6e063a1d1fba0a43
Tags
collection discovery evasion impact persistence privilege_escalation stealth trojan
score
8/10

Table of Contents

Analysis Overview

MITRE ATT&CK Matrix

Analysis: static1

Detonation Overview

Signatures

Analysis: behavioral1

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis Overview

score
8/10

SHA256

82b7101fb1b4dd4cae1390c619bbced74677c8b1971ae62f6e063a1d1fba0a43

Threat Level: Likely malicious

The file 82b7101fb1b4dd4cae1390c619bbced74677c8b1971ae62f6e063a1d1fba0a43.bin was found to be: Likely malicious.

Malicious Activity Summary

collection discovery evasion impact persistence privilege_escalation stealth trojan

Removes its main activity from the application launcher

Loads dropped Dex/Jar

Queries information about active data network

Declares broadcast receivers with permission to handle system events

Acquires the wake lock

Makes use of the framework's foreground persistence service

Requests changing the default SMS application.

Tries to add a device administrator.

Requests dangerous framework permissions

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

Uses Crypto APIs (Might try to encrypt user data)

MITRE ATT&CK Matrix

N/A

Analysis: static1

Detonation Overview

Reported

2024-06-16 23:49

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

Requests dangerous framework permissions

Description Indicator Process Target
Allows an application to receive SMS messages. android.permission.RECEIVE_SMS 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 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 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 read the user's contacts data. android.permission.READ_CONTACTS 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 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 see the number being dialed during an outgoing call with the option to redirect the call to a different number or abort the call altogether. android.permission.PROCESS_OUTGOING_CALLS N/A N/A

Analysis: behavioral1

Detonation Overview

Submitted

2024-06-16 23:49

Reported

2024-06-16 23:52

Platform

android-x86-arm-20240611.1-en

Max time kernel

179s

Max time network

169s

Command Line

com.bafengcinama.mediaplayer

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/data/com.bafengcinama.mediaplayer/b.zip N/A N/A
N/A /data/data/com.bafengcinama.mediaplayer/b.zip N/A N/A
N/A /data/data/com.bafengcinama.mediaplayer/b.zip N/A N/A

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

Queries information about active data network

discovery
Description Indicator Process Target
Framework service call android.net.IConnectivityManager.getActiveNetworkInfo N/A N/A

Requests changing the default SMS application.

collection impact
Description Indicator Process Target
Intent action android.provider.Telephony.ACTION_CHANGE_DEFAULT N/A N/A

Tries to add a device administrator.

privilege_escalation impact
Description Indicator Process Target
Intent action android.app.action.ADD_DEVICE_ADMIN 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

Processes

com.bafengcinama.mediaplayer

/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/data/com.bafengcinama.mediaplayer/b.zip --output-vdex-fd=45 --oat-fd=46 --oat-location=/data/data/com.bafengcinama.mediaplayer/oat/x86/b.odex --compiler-filter=quicken --class-loader-context=&

Network

Country Destination Domain Proto
N/A 224.0.0.251:5353 udp
TW 114.43.184.175:1985 tcp
KR 103.13.222.18:80 103.13.222.18 tcp
US 1.1.1.1:53 semanticlocation-pa.googleapis.com udp
GB 216.58.201.106:443 semanticlocation-pa.googleapis.com tcp
GB 216.58.201.110:443 tcp
US 1.1.1.1:53 android.apis.google.com udp
GB 142.250.187.238:443 android.apis.google.com tcp
TW 114.43.184.175:1985 tcp

Files

/data/data/com.bafengcinama.mediaplayer/b.zip

MD5 720f772a27e8272d102dd6b1c895a66e
SHA1 27cebf2aa4e284a194ee75e438f0537ce27f4f15
SHA256 86af83dd43d3dfd4070dac6bf4c8873c935be9a41a5cf4e7ad26ba71a2033be2
SHA512 21070f5f7e8d6202673600d318643d4ad220ac536981b35424e20e3cdc92b408fdca222383dcf08338889fe12a9c2619ed67d693a736be220eee86d017055fea

/data/data/com.bafengcinama.mediaplayer/files/config

MD5 49b5691f6c1a249dd2a7f9e6db783b85
SHA1 864fa20ee23794ecf9184b6f3b3fe2afa506ecd1
SHA256 f1bc63df60b66a26072e4b89740baf2396dbc396ede805dc163472298e675955
SHA512 a1050cc7102b49ff4b3372502b36657e053d0d9f28bffd8f8ce70002ef6ce69f8a26cae973636ec8dab7eddef69d8963481b9f475a918e18f73b5d5b93c3e245