Malware Analysis Report

2024-10-19 12:59

Sample ID 240826-11ldcazark
Target b4eb26b424f7a9b914c12e10bf3aef6f585379f12f1c84719eeafe47ac75f4a5.bin
SHA256 b4eb26b424f7a9b914c12e10bf3aef6f585379f12f1c84719eeafe47ac75f4a5
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

b4eb26b424f7a9b914c12e10bf3aef6f585379f12f1c84719eeafe47ac75f4a5

Threat Level: Known bad

The file b4eb26b424f7a9b914c12e10bf3aef6f585379f12f1c84719eeafe47ac75f4a5.bin was found to be: Known bad.

Malicious Activity Summary

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

Octo payload

Octo

Removes its main activity from the application launcher

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)

Makes use of the framework's Accessibility service

Queries the mobile country code (MCC)

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

Declares services with permission to bind to the system

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

Makes use of the framework's foreground persistence service

Performs UI accessibility actions on behalf of the user

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

Declares broadcast receivers with permission to handle system events

Attempts to obfuscate APK file format

Requests modifying system settings.

Requests dangerous framework permissions

Acquires the wake lock

Reads information about phone network operator.

Uses Crypto APIs (Might try to encrypt user data)

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

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-08-26 22:07

Signatures

Attempts to obfuscate APK file format

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
Required to be able to connect to paired Bluetooth devices. android.permission.BLUETOOTH_CONNECT N/A N/A
Allows an application to collect component usage statistics. android.permission.PACKAGE_USAGE_STATS N/A N/A
Allows an application to read SMS messages. android.permission.READ_SMS N/A N/A
Allows an application to read image files from external storage. android.permission.READ_MEDIA_IMAGES N/A N/A
Allows an application to write the user's contacts data. android.permission.WRITE_CONTACTS 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 receive SMS messages. android.permission.RECEIVE_SMS N/A N/A
Allows an application to send SMS messages. android.permission.SEND_SMS N/A N/A
Allows an application to access any geographic locations persisted in the user's shared collection. android.permission.ACCESS_MEDIA_LOCATION N/A N/A
Allows an app to access precise location. android.permission.ACCESS_FINE_LOCATION 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 app to post notifications. android.permission.POST_NOTIFICATIONS N/A N/A
Allows an application to read audio files from external storage. android.permission.READ_MEDIA_AUDIO 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 or write the system settings. android.permission.WRITE_SETTINGS N/A N/A
Allows an app to access approximate location. android.permission.ACCESS_COARSE_LOCATION N/A N/A
Allows an application to read or write the system settings. android.permission.WRITE_SETTINGS N/A N/A
Allows an app to access approximate location. android.permission.ACCESS_COARSE_LOCATION 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 from external storage. android.permission.READ_EXTERNAL_STORAGE N/A N/A
Allows an application a broad access to external storage in scoped storage. android.permission.MANAGE_EXTERNAL_STORAGE N/A N/A
Required to be able to advertise to nearby Bluetooth devices. android.permission.BLUETOOTH_ADVERTISE 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
Required to be able to advertise and connect to nearby devices via Wi-Fi. android.permission.NEARBY_WIFI_DEVICES N/A N/A
Allows an app to access location in the background. android.permission.ACCESS_BACKGROUND_LOCATION N/A N/A
Allows an app to post notifications. android.permission.POST_NOTIFICATIONS N/A N/A
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 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
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 an application to read video files from external storage. android.permission.READ_MEDIA_VIDEO N/A N/A
Required to be able to access the camera device. android.permission.CAMERA N/A N/A

Analysis: behavioral1

Detonation Overview

Submitted

2024-08-26 22:07

Reported

2024-08-26 22:16

Platform

android-x86-arm-20240624-en

Max time kernel

178s

Max time network

129s

Command Line

com.admit.fun

Signatures

Octo

banker trojan infostealer rat octo

Octo payload

Description Indicator Process Target
N/A N/A N/A N/A
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.admit.fun/app_fiber/xKd.json N/A N/A
N/A /data/user/0/com.admit.fun/app_fiber/xKd.json 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

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

Requests modifying system settings.

evasion
Description Indicator Process Target
Intent action android.settings.action.MANAGE_WRITE_SETTINGS 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.admit.fun

/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/user/0/com.admit.fun/app_fiber/xKd.json --output-vdex-fd=41 --oat-fd=42 --oat-location=/data/user/0/com.admit.fun/app_fiber/oat/x86/xKd.odex --compiler-filter=quicken --class-loader-context=&

Network

Country Destination Domain Proto
N/A 224.0.0.251:5353 udp
GB 142.250.187.202:443 tcp
US 1.1.1.1:53 semanticlocation-pa.googleapis.com udp
US 1.1.1.1:53 zarovinx.site udp
US 1.1.1.1:53 www.ip-api.com udp
US 1.1.1.1:53 tarnivex.website udp
US 208.95.112.1:80 www.ip-api.com tcp
US 1.1.1.1:53 peranlix.website udp
US 1.1.1.1:53 kolvinex.site udp
US 1.1.1.1:53 voranlix.store udp
US 1.1.1.1:53 lornivex.website udp
US 1.1.1.1:53 zanorvix.site udp
US 1.1.1.1:53 vernolixa.store udp
US 1.1.1.1:53 rolnivexa.website udp
US 1.1.1.1:53 kelvorim.store udp
US 1.1.1.1:53 tarovixa.website udp
US 1.1.1.1:53 ferolixan.store udp
US 1.1.1.1:53 solvenix.store udp
US 1.1.1.1:53 jervonix.store udp
US 1.1.1.1:53 norvelix.site udp
US 1.1.1.1:53 xelronax.website udp
US 1.1.1.1:53 travinox.site udp
US 1.1.1.1:53 zolvinax.store udp
US 1.1.1.1:53 xeromixan.website udp
US 1.1.1.1:53 melranix.site udp
GB 142.250.200.46:443 tcp
US 1.1.1.1:53 android.apis.google.com udp
GB 172.217.16.238:443 android.apis.google.com tcp

Files

/data/data/com.admit.fun/app_fiber/xKd.json

MD5 e9fb9122e08801927d5e01a080e1b877
SHA1 60eb0b7e384ce2c1a0785ef8c93b56d11c191e22
SHA256 d573c16b7c91656cde8603d7026aae97436e1985a64bc18c1c111383fe9b88bd
SHA512 0994c2ad7e347b14186a527479bb7045c45c82d597f97f1cd3ae4630e20da7b6ac1071e377b455955de9348ff145e2ac2d90b54296d1153c4642ca5e8949715f

/data/data/com.admit.fun/app_fiber/xKd.json

MD5 a56ec29a2a05a9aa661e15a83ef67bc9
SHA1 75d87551c65bdbdc859a7cb43cfc3fc8e32331d3
SHA256 ce47e765c9287bc346c6d5b5a7a8cb9ed341d5c331a8abde1472e154bd9b60ae
SHA512 80103603f1257616b516f85d2cd67a461911212611dba49321c2c8b3249735b83b9342559d98dee6c2ac2b39903e98c2d0b6c139a093b3aa85bbce65df5a59ad

/data/user/0/com.admit.fun/app_fiber/xKd.json

MD5 6093d3509e02b25fc9820993ad4fce8f
SHA1 007d11f9e0a7b12a6f027edd372c24ae2ad44892
SHA256 7e1a0fbf35a6a78571f8363ff1409c3c353befc84f2b0155e0bd153816344736
SHA512 2087b0888ecf109a4cd0f2493ba4610378401d3b5a5245ce065a0c1426baabfc8d82906b69cce6dc856c8beae29c02ad6461a919e6ddd646caf57a53940fe5fa

/data/user/0/com.admit.fun/app_fiber/xKd.json

MD5 4259123135ac5956ef878f0141ab0e61
SHA1 b8cd25fceee4447693820c3b3d3260d279c8182c
SHA256 8dc9e2e8c6dc7e52582500a0b49efef44de6a5ec8d4827c67fa745f3a34fa94d
SHA512 28a935c94aa2664d935198111a811d3514fea7bf20378e3a82d5d8ea5bd2b2edb3cccb278d3fc434ac4eee6bccbe0ee1769d776ced7c0c6345def3cb26d8653a

Analysis: behavioral2

Detonation Overview

Submitted

2024-08-26 22:07

Reported

2024-08-26 22:16

Platform

android-33-x64-arm64-20240624-en

Max time kernel

178s

Max time network

132s

Command Line

com.admit.fun

Signatures

Octo

banker trojan infostealer rat 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.admit.fun/app_fiber/xKd.json 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

Requests modifying system settings.

evasion
Description Indicator Process Target
Intent action android.settings.action.MANAGE_WRITE_SETTINGS 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.admit.fun

Network

Country Destination Domain Proto
N/A 224.0.0.251:5353 udp
GB 216.58.201.100:443 udp
GB 216.58.201.100:443 tcp
GB 216.58.201.100:443 tcp
US 1.1.1.1:53 kelvorim.store udp
US 1.1.1.1:53 norvelix.site udp
US 1.1.1.1:53 www.ip-api.com udp
US 1.1.1.1:53 solvenix.store udp
US 208.95.112.1:80 www.ip-api.com tcp
US 1.1.1.1:53 xeromixan.website udp
US 1.1.1.1:53 zolvinax.store udp
US 1.1.1.1:53 voranlix.store udp
US 1.1.1.1:53 zanorvix.site udp
US 1.1.1.1:53 ferolixan.store udp
US 1.1.1.1:53 xelronax.website udp
US 1.1.1.1:53 rolnivexa.website udp
US 1.1.1.1:53 kolvinex.site udp
US 1.1.1.1:53 vernolixa.store udp
US 1.1.1.1:53 tarnivex.website udp
US 1.1.1.1:53 lornivex.website udp
US 1.1.1.1:53 travinox.site udp
US 1.1.1.1:53 zarovinx.site udp
US 1.1.1.1:53 melranix.site udp
US 1.1.1.1:53 jervonix.store udp
US 1.1.1.1:53 tarovixa.website udp
US 1.1.1.1:53 peranlix.website udp
GB 216.58.204.78:443 tcp
GB 216.58.204.78:443 tcp
GB 216.58.204.78:443 udp
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 jervonix.store udp
US 1.1.1.1:53 jervonix.store udp
US 1.1.1.1:53 jervonix.store udp
US 1.1.1.1:53 jervonix.store udp
US 1.1.1.1:53 remoteprovisioning.googleapis.com udp
GB 216.58.201.106:443 remoteprovisioning.googleapis.com tcp
GB 216.58.201.100:443 tcp
GB 142.250.200.36:443 tcp
GB 142.250.200.36:443 tcp
US 172.64.41.3:443 tcp
US 172.64.41.3:443 tcp
GB 142.250.187.227:443 tcp
US 172.64.41.3:443 udp
GB 142.250.187.227:443 udp
GB 216.58.201.100:443 udp

Files

/data/data/com.admit.fun/app_fiber/xKd.json

MD5 e9fb9122e08801927d5e01a080e1b877
SHA1 60eb0b7e384ce2c1a0785ef8c93b56d11c191e22
SHA256 d573c16b7c91656cde8603d7026aae97436e1985a64bc18c1c111383fe9b88bd
SHA512 0994c2ad7e347b14186a527479bb7045c45c82d597f97f1cd3ae4630e20da7b6ac1071e377b455955de9348ff145e2ac2d90b54296d1153c4642ca5e8949715f

/data/data/com.admit.fun/app_fiber/xKd.json

MD5 a56ec29a2a05a9aa661e15a83ef67bc9
SHA1 75d87551c65bdbdc859a7cb43cfc3fc8e32331d3
SHA256 ce47e765c9287bc346c6d5b5a7a8cb9ed341d5c331a8abde1472e154bd9b60ae
SHA512 80103603f1257616b516f85d2cd67a461911212611dba49321c2c8b3249735b83b9342559d98dee6c2ac2b39903e98c2d0b6c139a093b3aa85bbce65df5a59ad

/data/user/0/com.admit.fun/app_fiber/xKd.json

MD5 6093d3509e02b25fc9820993ad4fce8f
SHA1 007d11f9e0a7b12a6f027edd372c24ae2ad44892
SHA256 7e1a0fbf35a6a78571f8363ff1409c3c353befc84f2b0155e0bd153816344736
SHA512 2087b0888ecf109a4cd0f2493ba4610378401d3b5a5245ce065a0c1426baabfc8d82906b69cce6dc856c8beae29c02ad6461a919e6ddd646caf57a53940fe5fa