Malware Analysis Report

2024-09-09 13:46

Sample ID 240531-18fg3agc86
Target 521f4567d1b7cd932be680dc591507f4200ed35c8d802a0cee34d6a97c2c8699.bin
SHA256 521f4567d1b7cd932be680dc591507f4200ed35c8d802a0cee34d6a97c2c8699
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 Matrix

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

521f4567d1b7cd932be680dc591507f4200ed35c8d802a0cee34d6a97c2c8699

Threat Level: Known bad

The file 521f4567d1b7cd932be680dc591507f4200ed35c8d802a0cee34d6a97c2c8699.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

Makes use of the framework's Accessibility service

Requests modifying system settings.

Removes its main activity from the application launcher

Prevents application removal

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

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

Queries the phone number (MSISDN for GSM devices)

Queries the mobile country code (MCC)

Loads dropped Dex/Jar

Makes use of the framework's foreground persistence service

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

Declares services with permission to bind to the system

Requests dangerous framework permissions

Declares broadcast receivers with permission to handle system events

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

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

Reads information about phone network operator.

Acquires the wake lock

Uses Crypto APIs (Might try to encrypt user data)

MITRE ATT&CK Matrix

N/A

Analysis: static1

Detonation Overview

Reported

2024-05-31 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 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 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 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 application to read or write the system settings. android.permission.WRITE_SETTINGS N/A N/A

Analysis: behavioral1

Detonation Overview

Submitted

2024-05-31 22:18

Reported

2024-05-31 22:22

Platform

android-x86-arm-20240514-en

Max time kernel

178s

Max time network

166s

Command Line

com.turnyoungo

Signatures

Octo

banker trojan infostealer rat octo

Octo payload

Description Indicator Process Target
N/A N/A 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

Prevents application removal

evasion
Description Indicator Process Target
Framework service call android.accessibilityservice.IAccessibilityServiceConnection.performGlobalAction 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

Removes its main activity from the application launcher

stealth trojan evasion
Description Indicator Process Target
N/A N/A N/A N/A

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 modifying system settings.

evasion
Description Indicator Process Target
Intent action android.settings.action.MANAGE_WRITE_SETTINGS N/A N/A

Loads dropped Dex/Jar

evasion
Description Indicator Process Target
N/A /data/user/0/com.turnyoungo/cache/dvjqxjbflgchze N/A N/A
N/A /data/user/0/com.turnyoungo/cache/dvjqxjbflgchze 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

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 phone number (MSISDN for GSM devices)

discovery

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

Acquires the wake lock

Description Indicator Process Target
Framework service call android.os.IPowerManager.acquireWakeLock N/A N/A

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

discovery

Reads information about phone network operator.

discovery

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.turnyoungo

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 semanticlocation-pa.googleapis.com udp
US 1.1.1.1:53 www.google.com udp
GB 172.217.169.68:443 www.google.com tcp
US 1.1.1.1:53 www.ip-api.com udp
US 208.95.112.1:80 www.ip-api.com tcp
US 1.1.1.1:53 moneyeurolandbebek.net udp
BG 79.110.49.131:443 moneyeurolandbebek.net tcp
US 1.1.1.1:53 moneyeurolandscans.net udp
US 1.1.1.1:53 moneyeurolandbabis.net udp
US 1.1.1.1:53 moneyeurolanddelicim.net udp
BG 79.110.49.131:443 moneyeurolandbebek.net tcp
GB 142.250.178.3:443 tcp
GB 142.250.200.46:443 tcp
US 1.1.1.1:53 android.apis.google.com udp
GB 142.250.187.206:443 android.apis.google.com tcp
GB 216.58.212.234:443 semanticlocation-pa.googleapis.com tcp
BG 79.110.49.131:443 moneyeurolandbebek.net tcp
BG 79.110.49.131:443 moneyeurolandbebek.net tcp

Files

/data/data/com.turnyoungo/cache/dvjqxjbflgchze

MD5 868698412bee61c1199333e15035128e
SHA1 566c1a72be5b12155fe2524fa7aa4cc205f3e81e
SHA256 abcba03708b5062b3289fa58f736604ba5a54cffc82d51a054548718bdbc625d
SHA512 c037f83fb11eebc78346a4880c122f601ba34bb0c13ca68b03178048ec73215e0e90fba8b427942768fd2f2a1909238bdb6e453bdffa9c102685ad61bed36d1a

/data/data/com.turnyoungo/cache/oat/dvjqxjbflgchze.cur.prof

MD5 2e78ff18826e998626770a36ee800ec1
SHA1 cc3ae6ac96d7c77ecb7eb24277b222b12616c5d5
SHA256 1e0c23cb91e58aafefa82b8aaa29c11daffef2ddd02f62105ea490f91feedbde
SHA512 7cda85929fba19976cd7e1eaaf550a53b0581ba8baf56fb6d66e4d28ccf675c4035809ed3526bb04654efcbecbb1302b68c51237274336e8961214a7f3171c08

Analysis: behavioral2

Detonation Overview

Submitted

2024-05-31 22:18

Reported

2024-05-31 22:22

Platform

android-33-x64-arm64-20240514-en

Max time kernel

177s

Max time network

142s

Command Line

com.turnyoungo

Signatures

Octo

banker trojan infostealer rat octo

Octo payload

Description Indicator Process Target
N/A N/A 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

Prevents application removal

evasion
Description Indicator Process Target
Framework service call android.accessibilityservice.IAccessibilityServiceConnection.performGlobalAction 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

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 modifying system settings.

evasion
Description Indicator Process Target
Intent action android.settings.action.MANAGE_WRITE_SETTINGS N/A N/A

Loads dropped Dex/Jar

evasion
Description Indicator Process Target
N/A /data/user/0/com.turnyoungo/cache/dvjqxjbflgchze 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

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 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

Reads information about phone network operator.

discovery

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.turnyoungo

Network

Country Destination Domain Proto
GB 142.250.187.228:443 udp
GB 142.250.187.228:443 tcp
N/A 224.0.0.251:5353 udp
US 1.1.1.1:53 remoteprovisioning.googleapis.com udp
GB 142.250.200.10:443 remoteprovisioning.googleapis.com tcp
US 1.1.1.1:53 gmscompliance-pa.googleapis.com udp
GB 216.58.213.10:443 gmscompliance-pa.googleapis.com tcp
US 1.1.1.1:53 www.ip-api.com udp
US 208.95.112.1:80 www.ip-api.com tcp
US 1.1.1.1:53 moneyeurolandscans.net udp
US 1.1.1.1:53 moneyeurolandbabis.net udp
US 1.1.1.1:53 moneyeuroland.net udp
US 1.1.1.1:53 moneyeurolandbebek.net udp
BG 79.110.49.131:443 moneyeurolandbebek.net tcp
BG 79.110.49.131:443 moneyeurolandbebek.net tcp
GB 216.58.204.67:443 tcp
GB 142.250.187.228:443 udp
GB 142.250.187.228:443 tcp
GB 142.250.179.228:443 udp
GB 142.250.179.228:443 tcp
GB 142.250.179.228:443 tcp
US 172.64.41.3:443 tcp
US 172.64.41.3:443 tcp
GB 142.250.180.3:443 tcp
GB 142.250.180.3:443 tcp
US 172.64.41.3:443 udp
GB 142.250.180.3:443 udp
GB 142.250.187.206:443 tcp
BG 79.110.49.131:443 moneyeurolandbebek.net tcp
BG 79.110.49.131:443 moneyeurolandbebek.net tcp

Files

/data/user/0/com.turnyoungo/cache/dvjqxjbflgchze

MD5 868698412bee61c1199333e15035128e
SHA1 566c1a72be5b12155fe2524fa7aa4cc205f3e81e
SHA256 abcba03708b5062b3289fa58f736604ba5a54cffc82d51a054548718bdbc625d
SHA512 c037f83fb11eebc78346a4880c122f601ba34bb0c13ca68b03178048ec73215e0e90fba8b427942768fd2f2a1909238bdb6e453bdffa9c102685ad61bed36d1a

/data/user/0/com.turnyoungo/cache/oat/dvjqxjbflgchze.cur.prof

MD5 5ee64a6f31f5fbfba61ce10f546c38d7
SHA1 e561f6e831de9f156115fee6fcc4308afcfc2664
SHA256 1f1b0dd73b8864f0ddf7adaf92aa5625a9ce47d1f6e484e0e866afc02d44a93c
SHA512 ebe89a947cfe64f09e970c7c8479df496041791b2bc26afde7f9e1eb75f3da7d1d22510bb03e66a12448865b13fddfb7a75e56aa596ca3bcf75ddeedb4dd9a60