Malware Analysis Report

2025-01-19 07:02

Sample ID 240523-pdg7mage3x
Target yutian.apk
SHA256 ebc504716f1b01b052d09077c369b95386ba0ef1a5c6f4c552717412a41460f1
Tags
banker collection credential_access discovery evasion impact persistence
score
8/10

Table of Contents

Analysis Overview

MITRE ATT&CK

Mobile Matrix V15

Analysis: static1

Detonation Overview

Signatures

Analysis: behavioral2

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis: behavioral1

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis Overview

score
8/10

SHA256

ebc504716f1b01b052d09077c369b95386ba0ef1a5c6f4c552717412a41460f1

Threat Level: Likely malicious

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

Malicious Activity Summary

banker collection credential_access discovery evasion impact persistence

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

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

Checks CPU information

Obtains sensitive information copied to the device clipboard

Queries the mobile country code (MCC)

Requests dangerous framework permissions

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

Checks if the internet connection is available

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 12:13

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: behavioral2

Detonation Overview

Submitted

2024-05-23 12:12

Reported

2024-05-23 12:33

Platform

android-x64-arm64-20240514-en

Max time kernel

113s

Max time network

148s

Command Line

io.dcloud.H5A305F922222

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.H5A305F922222

Network

Country Destination Domain Proto
N/A 224.0.0.251:5353 udp
GB 142.250.178.14:443 tcp
GB 142.250.178.14:443 tcp
US 1.1.1.1:53 android.apis.google.com udp
GB 172.217.16.238:443 android.apis.google.com tcp
US 1.1.1.1:53 stream.dcloud.net.cn udp
CN 49.234.42.40:80 stream.dcloud.net.cn tcp
US 1.1.1.1:53 ssl.google-analytics.com udp
GB 142.250.178.8:443 ssl.google-analytics.com tcp
US 1.1.1.1:53 service.dcloud.net.cn udp
CN 115.159.204.155:443 service.dcloud.net.cn tcp
CN 115.159.204.155:443 service.dcloud.net.cn tcp
CN 47.100.61.181:8001 tcp
CN 49.234.44.193:80 stream.dcloud.net.cn tcp
CN 47.100.61.181:8001 tcp
CN 124.220.57.196:443 service.dcloud.net.cn tcp
CN 124.220.57.196:443 service.dcloud.net.cn tcp
CN 115.159.41.92:80 stream.dcloud.net.cn tcp
CN 110.40.169.99:443 service.dcloud.net.cn tcp
CN 110.40.169.99:443 service.dcloud.net.cn tcp
CN 124.220.154.50:80 stream.dcloud.net.cn tcp
CN 110.40.181.119:443 service.dcloud.net.cn tcp
CN 110.40.181.119:443 service.dcloud.net.cn tcp
CN 150.158.157.83:80 stream.dcloud.net.cn tcp
CN 111.229.199.57:443 service.dcloud.net.cn tcp
CN 111.229.199.57:443 service.dcloud.net.cn tcp
CN 43.142.22.58:80 stream.dcloud.net.cn tcp
CN 43.142.67.81:80 stream.dcloud.net.cn tcp
GB 142.250.187.196:443 tcp
GB 142.250.187.196:443 tcp
CN 43.142.150.110:80 stream.dcloud.net.cn tcp
CN 43.142.166.20:80 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 c12ff89dfabd8995c6e05bbc0cfbe652
SHA1 dc11e7e0a809c87649022626f60d6b532015f790
SHA256 286f5c151fda257dfb6b300515b424625b3de60f21994ee2c9d271a2032fba8b
SHA512 4fa0c2be677dd9cbce41a41e83ee8be1020b5ac3821b84921c5f65bde6a82834b0b72256b4002341d1bd3a9a289202b115ab76f9569bebd5290a063fd8e088d5

/data/data/io.dcloud.H5A305F922222/shared_prefs_ext/test_app

MD5 e56eb29ec6c970d5485d64a3f4bfca5a
SHA1 458de6c27fae98343c477bc1e9860341b9035911
SHA256 e2a97bdb1c89df1e7c6fc4fff7071fd6e1dedadccda55992cf1fafb015fb7e01
SHA512 fa42677d300f74ea18e8f9bc99a5004f434902566c9d741d5974bd31e0885e8030f18cd439bfa941ee11d52a072a2c08d62fc62f345865a8d66a181464a4923d

/data/user/0/io.dcloud.H5A305F922222/files/cnc3ejE6/eje3cnc

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-05-23 12:12

Reported

2024-05-23 12:49

Platform

android-x86-arm-20240514-en

Max time kernel

54s

Max time network

131s

Command Line

io.dcloud.H5A305F922222

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.H5A305F922222

Network

Country Destination Domain Proto
GB 142.250.200.14:443 tcp
N/A 224.0.0.251:5353 udp
US 1.1.1.1:53 stream.dcloud.net.cn udp
CN 124.220.154.50:80 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
CN 115.159.204.155:443 service.dcloud.net.cn tcp
CN 150.158.157.83:80 stream.dcloud.net.cn tcp
CN 47.100.61.181:8001 tcp
CN 47.100.61.181:8001 tcp
CN 124.220.57.196:443 service.dcloud.net.cn tcp
GB 142.250.180.14:443 tcp
US 1.1.1.1:53 android.apis.google.com udp
GB 142.250.187.238:443 android.apis.google.com tcp
CN 124.220.57.196:443 service.dcloud.net.cn tcp
CN 43.142.22.58:80 stream.dcloud.net.cn tcp
CN 110.40.169.99:443 service.dcloud.net.cn tcp
CN 110.40.169.99:443 service.dcloud.net.cn tcp
CN 43.142.67.81:80 stream.dcloud.net.cn tcp
CN 110.40.181.119:443 service.dcloud.net.cn tcp
CN 110.40.181.119:443 service.dcloud.net.cn tcp
CN 43.142.150.110:80 stream.dcloud.net.cn tcp
CN 111.229.199.57:443 service.dcloud.net.cn tcp
CN 111.229.199.57:443 service.dcloud.net.cn tcp
CN 43.142.166.20:80 stream.dcloud.net.cn tcp
CN 49.234.42.40:80 stream.dcloud.net.cn tcp
CN 49.234.44.193:80 stream.dcloud.net.cn tcp
CN 115.159.41.92:80 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 273de349e814baef6d7f0dca20f90c8b
SHA1 7fcbeaa9683f383a193624d9d1169ac19b2bd7c7
SHA256 47a168337993e8075951269af6f5bca1dc38e6d97a9c667f1bc861f05683d618
SHA512 ad304c10505104f63fc22460cb2ff6be477498902f77473396dcdeee77afb30f3c36d5ef932c90bdaad9ccf0ba00c2d47ce310e18edb2cbcdaebbe97e684adfe

/data/data/io.dcloud.H5A305F922222/shared_prefs_ext/test_app

MD5 e56eb29ec6c970d5485d64a3f4bfca5a
SHA1 458de6c27fae98343c477bc1e9860341b9035911
SHA256 e2a97bdb1c89df1e7c6fc4fff7071fd6e1dedadccda55992cf1fafb015fb7e01
SHA512 fa42677d300f74ea18e8f9bc99a5004f434902566c9d741d5974bd31e0885e8030f18cd439bfa941ee11d52a072a2c08d62fc62f345865a8d66a181464a4923d

/data/data/io.dcloud.H5A305F922222/files/cnc3ejE6/eje3cnc

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