Malware Analysis Report

2025-01-19 07:01

Sample ID 240523-n1s2zafb8z
Target 烟草最终.apk
SHA256 244063f7d66be2f877e0637e10622ce15836b34716aef0455c85e3d665d3f8bd
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

244063f7d66be2f877e0637e10622ce15836b34716aef0455c85e3d665d3f8bd

Threat Level: Likely malicious

The file 烟草最终.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)

Obtains sensitive information copied to the device clipboard

Checks memory information

Queries the mobile country code (MCC)

Checks CPU information

Queries information about the current Wi-Fi connection

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

Reads information about phone network operator.

Checks if the internet connection is available

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

Requests dangerous framework permissions

Uses Crypto APIs (Might try to encrypt user data)

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-05-23 11:52

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 11:52

Reported

2024-05-23 11:56

Platform

android-x86-arm-20240514-en

Max time kernel

53s

Max time network

136s

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
US 1.1.1.1:53 stream.dcloud.net.cn udp
CN 43.142.67.81:80 stream.dcloud.net.cn tcp
US 1.1.1.1:53 service.dcloud.net.cn udp
CN 111.229.199.57:443 service.dcloud.net.cn tcp
CN 111.229.199.57:443 service.dcloud.net.cn tcp
CN 43.142.150.110:80 stream.dcloud.net.cn tcp
CN 115.159.204.155:443 service.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 142.250.180.14:443 tcp
US 1.1.1.1:53 android.apis.google.com udp
GB 216.58.204.78:443 android.apis.google.com tcp
CN 124.220.57.196:443 service.dcloud.net.cn tcp
CN 124.220.57.196:443 service.dcloud.net.cn tcp
CN 49.234.42.40:80 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 49.234.44.193:80 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 115.159.41.92:80 stream.dcloud.net.cn tcp
GB 142.250.187.206:443 tcp
CN 124.220.154.50:80 stream.dcloud.net.cn tcp
CN 150.158.157.83:80 stream.dcloud.net.cn tcp
CN 43.142.22.58:80 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 9dbd0de215b97ed7b51a18b4a4474a03
SHA1 1126e0b2ce57d456537d5ae9feac32f698c662fb
SHA256 3ce44fcbf0e7d5b91466a4400a90d33c97ac2feaad440b4fc1f34348aa373952
SHA512 e284ddcf51fbb3f55a9469d0af34a5690dc9a347672e997909e7bdac70ba384e9362e9616f5f4824aa39a5b7a1d7480389227b88511d81b2f06025c4071d9b3f

/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 11:52

Reported

2024-05-23 11:56

Platform

android-x64-20240514-en

Max time kernel

88s

Max time network

153s

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

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
US 1.1.1.1:53 ssl.google-analytics.com udp
GB 142.250.187.232:443 ssl.google-analytics.com tcp
GB 216.58.204.74:443 tcp
US 1.1.1.1:53 android.apis.google.com udp
GB 142.250.200.46:443 android.apis.google.com tcp
GB 172.217.169.14:443 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 service.dcloud.net.cn udp
CN 124.220.57.196:443 service.dcloud.net.cn tcp
CN 49.234.44.193:80 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 115.159.41.92:80 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 124.220.154.50:80 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 150.158.157.83:80 stream.dcloud.net.cn tcp
GB 142.250.187.238:443 tcp
GB 142.250.200.2:443 tcp
CN 111.229.199.57:443 service.dcloud.net.cn tcp
CN 115.159.204.155:443 service.dcloud.net.cn tcp
CN 43.142.22.58:80 stream.dcloud.net.cn tcp
CN 115.159.204.155:443 service.dcloud.net.cn tcp
CN 43.142.67.81:80 stream.dcloud.net.cn tcp
CN 43.142.150.110:80 stream.dcloud.net.cn tcp
CN 43.142.166.20:80 stream.dcloud.net.cn tcp
GB 172.217.16.228:443 tcp
GB 172.217.16.228:443 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 599100b04e96f64cf8c496505bf62995
SHA1 eaad5e1da0d7687ea8d1e5592c546edc9d1a573b
SHA256 16a7ee57ba4ecc3519768d7cccb2638c11aebf13fa8869d9b28a649d59cbd32e
SHA512 678fba87eb41f7fd45c2c4f946e2c0ffbb8f9ab6d5e3ada7fb6f5b95e67843d07045981329a78e55b305e3ca637129e1c2464d54f7d538ca6b059ef987372d2e

/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