Malware Analysis Report

2024-07-28 11:35

Sample ID 240615-31jkvsthkq
Target ca87fbdb57d7608b3c04810a86e0b990fbc1e6df249445719696e87468155e3e.bin
SHA256 ca87fbdb57d7608b3c04810a86e0b990fbc1e6df249445719696e87468155e3e
Tags
discovery evasion execution 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

ca87fbdb57d7608b3c04810a86e0b990fbc1e6df249445719696e87468155e3e

Threat Level: Likely malicious

The file ca87fbdb57d7608b3c04810a86e0b990fbc1e6df249445719696e87468155e3e.bin was found to be: Likely malicious.

Malicious Activity Summary

discovery evasion execution impact persistence privilege_escalation stealth trojan

Removes its main activity from the application launcher

Loads dropped Dex/Jar

Queries the phone number (MSISDN for GSM devices)

Acquires the wake lock

Queries information about active data network

Tries to add a device administrator.

Declares broadcast receivers with permission to handle system events

Requests dangerous framework permissions

Makes use of the framework's foreground persistence service

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

Schedules tasks to execute at a specified time

Uses Crypto APIs (Might try to encrypt user data)

MITRE ATT&CK Matrix

N/A

Analysis: static1

Detonation Overview

Reported

2024-06-15 23:58

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 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 write the user's contacts data. android.permission.WRITE_CONTACTS 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 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 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 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
Allows an application to read the user's call log. android.permission.READ_CALL_LOG N/A N/A
Allows an application to write and read the user's call log data. android.permission.WRITE_CALL_LOG N/A N/A
Allows the app to answer an incoming phone call. android.permission.ANSWER_PHONE_CALLS N/A N/A
Allows an application to record audio. android.permission.RECORD_AUDIO N/A N/A

Analysis: behavioral1

Detonation Overview

Submitted

2024-06-15 23:58

Reported

2024-06-16 00:01

Platform

android-x86-arm-20240611.1-en

Max time kernel

177s

Max time network

169s

Command Line

com.bmSFNQnt

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.bmSFNQnt/b.zip N/A N/A
N/A /data/data/com.bmSFNQnt/b.zip N/A N/A
N/A /data/data/com.bmSFNQnt/b.zip N/A N/A

Queries the phone number (MSISDN for GSM devices)

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

Queries information about active data network

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

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

com.bmSFNQnt

/system/bin/dex2oat --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 --dex-file=/data/data/com.bmSFNQnt/b.zip --output-vdex-fd=44 --oat-fd=45 --oat-location=/data/data/com.bmSFNQnt/oat/x86/b.odex --compiler-filter=quicken --class-loader-context=&

Network

Country Destination Domain Proto
N/A 224.0.0.251:5353 udp
TW 114.36.201.102:8081 tcp
KR 103.13.221.63:80 103.13.221.63 tcp
US 1.1.1.1:53 semanticlocation-pa.googleapis.com udp
GB 142.250.187.206:443 tcp
US 1.1.1.1:53 android.apis.google.com udp
GB 216.58.204.78:443 android.apis.google.com tcp
GB 172.217.169.10:443 semanticlocation-pa.googleapis.com tcp
TW 114.36.201.102:8081 tcp
TW 114.36.201.102:8081 tcp

Files

/data/data/com.bmSFNQnt/b.zip

MD5 1db8f032804d525ca4f3f6010693c04e
SHA1 57c6f89ddd2097f2bb2f3ff2f644752d1048e7c7
SHA256 5d757dc6fc86e3f161d720d7ca3c98b68e3ef3943c39d24f88d38ce31f4cb903
SHA512 81465aaf05810a963ab881942289d644a2295dae153e7afc63f0bc11c2d6529a1c386c5f16d61c3047dd77971458a1f6bd3b94bd4167d23e482eca08b6d35e5d

/data/data/com.bmSFNQnt/files/config

MD5 06244f5544f63c03cbba32710aa7b737
SHA1 4747c81291757043bda75b34dc43fbbd7c839611
SHA256 c10720b9e264d8e3ac4a11b984f3d5198f2e3fd466b3ca4d39dd0b70b10e6e94
SHA512 0c3d99a4cb2ba47e985bce3ae99e33e8583e14b722ddbce6054fb70de7bb5c85100cebdf3ae73c1b0c0c6aebdd1d324c235fb932be143c72c0971ee38c657f70