Malware Analysis Report

2024-12-07 17:09

Sample ID 241112-18cfeasern
Target 55ce04247cd98362cfd010a76c32b61c97ef62b5e6c76ba9b44a2abd24e210d5.bin
SHA256 55ce04247cd98362cfd010a76c32b61c97ef62b5e6c76ba9b44a2abd24e210d5
Tags
octo banker collection credential_access discovery evasion impact infostealer persistence rat stealth trojan
score
10/10

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
10/10

SHA256

55ce04247cd98362cfd010a76c32b61c97ef62b5e6c76ba9b44a2abd24e210d5

Threat Level: Known bad

The file 55ce04247cd98362cfd010a76c32b61c97ef62b5e6c76ba9b44a2abd24e210d5.bin was found to be: Known bad.

Malicious Activity Summary

octo banker collection credential_access discovery evasion impact infostealer persistence rat stealth trojan

Octo

Octo family

Octo payload

Removes its main activity from the application launcher

Makes use of the framework's Accessibility service

Loads dropped Dex/Jar

Queries the phone number (MSISDN for GSM devices)

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

Performs UI accessibility actions on behalf of the user

Declares broadcast receivers with permission to handle system events

Makes use of the framework's foreground persistence service

Reads information about phone network operator.

Requests accessing notifications (often used to intercept notifications before users become aware).

Declares services with permission to bind to the system

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

Acquires the wake lock

Requests dangerous framework permissions

Queries the mobile country code (MCC)

Requests disabling of battery optimizations (often used to enable hiding in the background).

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

Uses Crypto APIs (Might try to encrypt user data)

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-11-12 22:18

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

Declares services with permission to bind to the system

Description Indicator Process Target
Required by accessibility services to bind with the system. Allows apps to access accessibility features. android.permission.BIND_ACCESSIBILITY_SERVICE N/A N/A
Required by notification listener services to bind with the system. Allows apps to listen to and interact with notifications on the device. android.permission.BIND_NOTIFICATION_LISTENER_SERVICE N/A N/A

Requests dangerous framework permissions

Description Indicator Process Target
Allows an application to read from external storage. android.permission.READ_EXTERNAL_STORAGE N/A N/A
Allows an app to post notifications. android.permission.POST_NOTIFICATIONS N/A N/A
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 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 read or write the system settings. android.permission.WRITE_SETTINGS N/A N/A
Allows applications to use exact alarm APIs. android.permission.SCHEDULE_EXACT_ALARM 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

Analysis: behavioral1

Detonation Overview

Submitted

2024-11-12 22:18

Reported

2024-11-12 22:21

Platform

android-x86-arm-20240624-en

Max time kernel

148s

Max time network

131s

Command Line

com.nevercountry4

Signatures

Octo

banker trojan infostealer rat octo

Octo family

octo

Octo payload

Description Indicator Process Target
N/A N/A N/A N/A

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/user/0/com.nevercountry4/cache/ymhhmpclesoc N/A N/A
N/A /data/user/0/com.nevercountry4/cache/ymhhmpclesoc N/A N/A

Makes use of the framework's Accessibility service

collection evasion credential_access
Description Indicator Process Target
Framework service call android.accessibilityservice.IAccessibilityServiceConnection.findAccessibilityNodeInfoByAccessibilityId N/A N/A
Framework service call android.accessibilityservice.IAccessibilityServiceConnection.findAccessibilityNodeInfosByViewId N/A N/A

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

banker discovery

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

Performs UI accessibility actions on behalf of the user

evasion
Description Indicator Process Target
N/A android.accessibilityservice.IAccessibilityServiceConnection.performGlobalAction N/A N/A
N/A android.accessibilityservice.IAccessibilityServiceConnection.performGlobalAction 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

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

discovery

Reads information about phone network operator.

discovery

Requests accessing notifications (often used to intercept notifications before users become aware).

collection credential_access
Description Indicator Process Target
Intent action android.settings.ACTION_NOTIFICATION_LISTENER_SETTINGS N/A N/A

Requests disabling of battery optimizations (often used to enable hiding in the background).

evasion
Description Indicator Process Target
Intent action android.settings.REQUEST_IGNORE_BATTERY_OPTIMIZATIONS 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.nevercountry4

Network

Country Destination Domain Proto
N/A 224.0.0.251:5353 udp
US 1.1.1.1:53 semanticlocation-pa.googleapis.com udp
US 1.1.1.1:53 hepsi010malltim21.com udp
US 1.1.1.1:53 neadamsin45mdeaayaq.com udp
US 1.1.1.1:53 hersenbo67saaaeldai548.com udp
US 1.1.1.1:53 alayinag45idaesaesr5454.com udp
US 1.1.1.1:53 hepsinezipala4esdim52.com udp
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 142.250.178.10:443 semanticlocation-pa.googleapis.com tcp
GB 216.58.201.106:443 semanticlocation-pa.googleapis.com tcp

Files

/data/data/com.nevercountry4/cache/ymhhmpclesoc

MD5 e89fb3a2fd931b06f8f03d8d3f0e492c
SHA1 258e4fba62ae7e8f043d25467230e93cf613bb8a
SHA256 6255c507a1aa5b0711967ba75bcdac4cef4b2feb3a23f050f12944bec6396d6c
SHA512 b62ea041810b3361d42cabd7c8c7337423d792caf9d86e9d80c7c4325967a6c3ece64a5bfa764c1d674f557e46496ae6f58d1f884cc6784de809735075975968

/data/data/com.nevercountry4/cache/oat/ymhhmpclesoc.cur.prof

MD5 035a1ab51fe49a5135b07755f663ccfe
SHA1 f6e93188298e43fcc89681d72d355233889a8b75
SHA256 4d2d6884886c261a3cc321c596cc907a095652b6013757ea59bea5c1bd83dd9c
SHA512 e17e7d2c154de224b5332e366436474b6e729b21f151c90e2d05362383f33b89036d6304577d1cf5939d1b6342221a75417cc50c946bd53f24d7f98e1f397f69

Analysis: behavioral2

Detonation Overview

Submitted

2024-11-12 22:18

Reported

2024-11-12 22:21

Platform

android-33-x64-arm64-20240910-en

Max time kernel

148s

Max time network

151s

Command Line

com.nevercountry4

Signatures

Octo

banker trojan infostealer rat octo

Octo family

octo

Octo payload

Description Indicator Process Target
N/A N/A N/A N/A

Loads dropped Dex/Jar

evasion
Description Indicator Process Target
N/A /data/user/0/com.nevercountry4/cache/ymhhmpclesoc N/A N/A

Makes use of the framework's Accessibility service

collection evasion credential_access
Description Indicator Process Target
Framework service call android.accessibilityservice.IAccessibilityServiceConnection.findAccessibilityNodeInfoByAccessibilityId N/A N/A
Framework service call android.accessibilityservice.IAccessibilityServiceConnection.findAccessibilityNodeInfosByViewId N/A N/A

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

banker discovery

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

Performs UI accessibility actions on behalf of the user

evasion
Description Indicator Process Target
N/A android.accessibilityservice.IAccessibilityServiceConnection.performGlobalAction N/A N/A
N/A android.accessibilityservice.IAccessibilityServiceConnection.performGlobalAction N/A N/A
N/A android.accessibilityservice.IAccessibilityServiceConnection.performGlobalAction N/A N/A
N/A android.accessibilityservice.IAccessibilityServiceConnection.performGlobalAction 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

Reads information about phone network operator.

discovery

Requests accessing notifications (often used to intercept notifications before users become aware).

collection credential_access
Description Indicator Process Target
Intent action android.settings.ACTION_NOTIFICATION_LISTENER_SETTINGS N/A N/A

Requests disabling of battery optimizations (often used to enable hiding in the background).

evasion
Description Indicator Process Target
Intent action android.settings.REQUEST_IGNORE_BATTERY_OPTIMIZATIONS 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.nevercountry4

Network

Country Destination Domain Proto
N/A 224.0.0.251:5353 udp
US 1.1.1.1:53 alayinag45idaesaesr5454.com udp
US 1.1.1.1:53 neadamsin45mdeaayaq.com udp
US 1.1.1.1:53 hepsi010malltim21.com udp
US 1.1.1.1:53 hepsinezipala4esdim52.com udp
US 1.1.1.1:53 hersenbo67saaaeldai548.com udp
US 1.1.1.1:53 android.apis.google.com udp
GB 142.250.178.14:443 android.apis.google.com tcp
US 1.1.1.1:53 rcs-acs-tmo-us.jibe.google.com udp
US 216.239.36.155:443 rcs-acs-tmo-us.jibe.google.com tcp
US 1.1.1.1:53 remoteprovisioning.googleapis.com udp
GB 172.217.169.74:443 remoteprovisioning.googleapis.com tcp
GB 216.58.204.74:443 remoteprovisioning.googleapis.com tcp
GB 142.250.178.14:443 android.apis.google.com udp
GB 216.58.212.228:443 tcp
US 1.1.1.1:53 www.google.com udp
GB 142.250.178.4:443 www.google.com udp
US 1.1.1.1:53 www.google.com udp
GB 142.250.200.4:443 www.google.com tcp
GB 216.58.213.6:80 tcp
GB 216.58.212.193:443 tcp
GB 172.217.169.65:443 tcp
GB 172.217.169.65:443 tcp
GB 142.250.187.238:443 tcp
GB 172.217.169.65:443 tcp
GB 172.217.169.65:443 tcp
GB 142.250.200.35:443 tcp
US 216.239.34.36:443 tcp

Files

/data/data/com.nevercountry4/cache/ymhhmpclesoc

MD5 e89fb3a2fd931b06f8f03d8d3f0e492c
SHA1 258e4fba62ae7e8f043d25467230e93cf613bb8a
SHA256 6255c507a1aa5b0711967ba75bcdac4cef4b2feb3a23f050f12944bec6396d6c
SHA512 b62ea041810b3361d42cabd7c8c7337423d792caf9d86e9d80c7c4325967a6c3ece64a5bfa764c1d674f557e46496ae6f58d1f884cc6784de809735075975968

/data/data/com.nevercountry4/cache/oat/ymhhmpclesoc.cur.prof

MD5 1579c5ac6d7b5ec5a108b36d960461bc
SHA1 809ac187d45b08edbe8f5b10afdf5b0535c12033
SHA256 69e4bdbddcc5b7c90330162e8ff46443b7b6d5a2d949cb9ef0c7bd62b50d05ee
SHA512 5b0eecf70cbd270f3055b552168823ccb946ac8f434c4324d8f423f8ab914c9d5d87eb03b5dc07a4317937caec2d840a579359759112d97723f6c5ac599f85e7