Malware Analysis Report

2025-01-19 07:02

Sample ID 240523-n3sh8afd5y
Target fangzai.apk
SHA256 e4be792a28d82b43cfbdde1581dbc738e8f39781a8546a3becbd71d117bdff5e
Tags
banker discovery evasion impact persistence collection credential_access
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 Overview

score
8/10

SHA256

e4be792a28d82b43cfbdde1581dbc738e8f39781a8546a3becbd71d117bdff5e

Threat Level: Likely malicious

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

Malicious Activity Summary

banker discovery evasion impact persistence collection credential_access

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

Checks memory information

Queries information about the current Wi-Fi connection

Obtains sensitive information copied to the device clipboard

Checks CPU information

Queries the mobile country code (MCC)

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

Requests dangerous framework permissions

Checks if the internet connection is available

Queries the unique device ID (IMEI, MEID, IMSI)

Reads information about phone network operator.

Uses Crypto APIs (Might try to encrypt user data)

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-05-23 11:55

Signatures

Requests dangerous framework permissions

Description Indicator Process Target
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 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
Required to be able to access the camera device. android.permission.CAMERA N/A N/A
Allows an application to record audio. android.permission.RECORD_AUDIO N/A N/A
Allows access to the list of accounts in the Accounts Service. android.permission.GET_ACCOUNTS 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 app to access approximate location. android.permission.ACCESS_COARSE_LOCATION N/A N/A
Allows an app to access precise location. android.permission.ACCESS_FINE_LOCATION N/A N/A
Allows an application to read or write the system settings. android.permission.WRITE_SETTINGS N/A N/A

Analysis: behavioral1

Detonation Overview

Submitted

2024-05-23 11:55

Reported

2024-05-23 12:00

Platform

android-x86-arm-20240514-en

Max time kernel

7s

Max time network

130s

Command Line

io.dcloud.H53E0C750

Signatures

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

banker discovery

Checks CPU information

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

Checks memory information

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

Queries information about the current Wi-Fi connection

discovery
Description Indicator Process Target
Framework service call android.net.wifi.IWifiManager.getConnectionInfo 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

Checks if the internet connection is available

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

Queries the unique device ID (IMEI, MEID, IMSI)

discovery

Reads information about phone network operator.

discovery

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

io.dcloud.H53E0C750

Network

Country Destination Domain Proto
N/A 224.0.0.251:5353 udp
GB 172.217.169.14:443 tcp
US 1.1.1.1:53 www.google.com udp
GB 216.58.212.228:443 www.google.com tcp
US 1.1.1.1:53 stream.dcloud.net.cn udp
CN 115.159.41.92:80 stream.dcloud.net.cn tcp
US 1.1.1.1:53 service.dcloud.net.cn udp
CN 115.159.204.155:443 service.dcloud.net.cn tcp
US 1.1.1.1:53 semanticlocation-pa.googleapis.com udp
GB 142.250.200.46:443 tcp
US 1.1.1.1:53 android.apis.google.com udp
GB 142.250.187.238:443 android.apis.google.com tcp

Files

/storage/emulated/0/.imei.txt

MD5 5c10878800d61df32df4c3e402daa244
SHA1 354208cc95d2ff1671774c769e70ecaed72ec27d
SHA256 45a1189b8ed371dcb98cb081d63eba6b0215743766c21022d9eed2cb7ec79e26
SHA512 b27a52c1bdbc8ead2168d4fc75d617cba46d24f8f8dccb7bb973e1a28ec1c782c3bb071d433535c818db33f2bffd30b71920ee17a02dc0cdd4fa46ab12f26bf4

/data/data/io.dcloud.H53E0C750/shared_prefs_ext/test_app

MD5 5291edae17c81a7909dc027d2647903f
SHA1 12e42bf8a5b39b6d9736abb9defffa5f5d6d0c12
SHA256 dc093e9c4253c774619c65d11c44c6625d474ae2047320fc0396f11a38cac513
SHA512 fc0817cd9daa23d49d25a09763a72614281fda171f69837731b4af810eb1943b638ccee85ccbf84c7a6807d6fd541e518f6424c254b1b75795310e85170ed62f

/data/data/io.dcloud.H53E0C750/files/cnc3ejE6/eje3cnc

MD5 585839d66722cfd02e40cb740cccb633
SHA1 374c19200fee201b26d0153487a281a934615884
SHA256 86a9bb4985cca6c9636c4fd071bef4b70ba7b3a5eb51af869a1299dc2b1574a8
SHA512 09bbe1bf1455861fd4732f2d1945c84bac34090906ac2fab75d144c22ffcf6bc585c8209e94a2b1919c8402df53966081a1af2993e12261ae4c4ac5568667d88

Analysis: behavioral2

Detonation Overview

Submitted

2024-05-23 11:55

Reported

2024-05-23 11:59

Platform

android-x64-arm64-20240514-en

Max time kernel

54s

Max time network

159s

Command Line

io.dcloud.H53E0C750

Signatures

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

banker discovery

Checks CPU information

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

Checks memory information

evasion discovery
Description Indicator Process Target
File opened for read /proc/meminfo 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 information about the current Wi-Fi connection

discovery
Description Indicator Process Target
Framework service call android.net.wifi.IWifiManager.getConnectionInfo N/A N/A

Checks if the internet connection is available

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

Queries the unique device ID (IMEI, MEID, IMSI)

discovery

Reads information about phone network operator.

discovery

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

io.dcloud.H53E0C750

Network

Country Destination Domain Proto
N/A 224.0.0.251:5353 udp
GB 142.250.200.46:443 tcp
GB 142.250.200.46:443 tcp
US 1.1.1.1:53 android.apis.google.com udp
GB 216.58.204.78:443 android.apis.google.com tcp
GB 216.58.204.78:443 android.apis.google.com tcp
US 1.1.1.1:53 stream.dcloud.net.cn udp
CN 115.159.41.92:80 stream.dcloud.net.cn tcp
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 service.dcloud.net.cn udp
CN 124.220.57.196:443 service.dcloud.net.cn tcp
CN 124.220.154.50:80 stream.dcloud.net.cn tcp
CN 124.220.57.196:443 service.dcloud.net.cn tcp
CN 110.40.169.99:443 service.dcloud.net.cn tcp
CN 150.158.157.83:80 stream.dcloud.net.cn tcp
CN 110.40.169.99:443 service.dcloud.net.cn tcp
CN 110.40.181.119:443 service.dcloud.net.cn tcp
CN 43.142.22.58:80 stream.dcloud.net.cn tcp
CN 110.40.181.119:443 service.dcloud.net.cn tcp
CN 111.229.199.57:443 service.dcloud.net.cn tcp
CN 43.142.67.81:80 stream.dcloud.net.cn tcp
CN 111.229.199.57:443 service.dcloud.net.cn tcp
CN 115.159.204.155:443 service.dcloud.net.cn tcp
CN 43.142.150.110:80 stream.dcloud.net.cn tcp
CN 115.159.204.155:443 service.dcloud.net.cn tcp
CN 43.142.166.20:80 stream.dcloud.net.cn tcp
GB 216.58.201.100:443 tcp
GB 216.58.201.100:443 tcp
CN 49.234.42.40:80 stream.dcloud.net.cn tcp
CN 49.234.44.193:80 stream.dcloud.net.cn tcp
US 1.1.1.1:53 stream.mobihtml5.com udp
US 23.27.132.60:80 stream.mobihtml5.com tcp

Files

/storage/emulated/0/.imei.txt

MD5 c3ebb84e1d0a5ec67e49c970c48a415c
SHA1 9a65789f4bbdcf8e604daef6fba13ebfabbb6e83
SHA256 8589af01623f7a07ccdaf8b6133adb375f465a3191e731747fd20532c45ad5a4
SHA512 e7029caca393dc2abd8ab67f2a28946fa4c75250a525063bcceb43c542271f379d7b574fa714df00063fbbda015cb90258c538c384aea07e21353e9aff8ace04

/data/data/io.dcloud.H53E0C750/shared_prefs_ext/test_app

MD5 5291edae17c81a7909dc027d2647903f
SHA1 12e42bf8a5b39b6d9736abb9defffa5f5d6d0c12
SHA256 dc093e9c4253c774619c65d11c44c6625d474ae2047320fc0396f11a38cac513
SHA512 fc0817cd9daa23d49d25a09763a72614281fda171f69837731b4af810eb1943b638ccee85ccbf84c7a6807d6fd541e518f6424c254b1b75795310e85170ed62f

/data/user/0/io.dcloud.H53E0C750/files/cnc3ejE6/eje3cnc

MD5 585839d66722cfd02e40cb740cccb633
SHA1 374c19200fee201b26d0153487a281a934615884
SHA256 86a9bb4985cca6c9636c4fd071bef4b70ba7b3a5eb51af869a1299dc2b1574a8
SHA512 09bbe1bf1455861fd4732f2d1945c84bac34090906ac2fab75d144c22ffcf6bc585c8209e94a2b1919c8402df53966081a1af2993e12261ae4c4ac5568667d88