Malware Analysis Report

2024-09-09 13:51

Sample ID 240710-ppekwaxgrr
Target 808414f3db4fca9182bbc9e3e7c562a0.apk
SHA256 94d9a3428f6143a11bf674c1afdfef2dcf3ac4e62e109a2f1eb3a6647da45519
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 Overview

score
10/10

SHA256

94d9a3428f6143a11bf674c1afdfef2dcf3ac4e62e109a2f1eb3a6647da45519

Threat Level: Known bad

The file 808414f3db4fca9182bbc9e3e7c562a0.apk was found to be: Known bad.

Malicious Activity Summary

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

Octo

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)

Requests dangerous framework permissions

Requests modifying system settings.

Declares broadcast receivers with permission to handle system events

Declares services with permission to bind to the system

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

Performs UI accessibility actions on behalf of the user

Acquires the wake lock

Makes use of the framework's foreground persistence service

Queries the mobile country code (MCC)

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

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

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)

Checks memory information

Checks CPU information

MITRE ATT&CK Matrix

N/A

Analysis: static1

Detonation Overview

Reported

2024-07-10 12:29

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 application to write to external storage. android.permission.WRITE_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

2024-07-10 12:29

Reported

2024-07-10 12:31

Platform

android-x86-arm-20240624-en

Max time kernel

63s

Max time network

66s

Command Line

com.laughschool0

Signatures

Octo

banker trojan infostealer rat 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.laughschool0/cache/gixypdv N/A N/A
N/A /data/user/0/com.laughschool0/cache/gixypdv 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
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

Checks CPU information

Description Indicator Process Target
File opened for read /proc/cpuinfo N/A N/A

Checks memory information

Description Indicator Process Target
File opened for read /proc/meminfo N/A N/A

Processes

com.laughschool0

Network

Country Destination Domain Proto
N/A 224.0.0.251:5353 udp
GB 216.58.204.74:443 tcp
US 1.1.1.1:53 semanticlocation-pa.googleapis.com udp
NL 79.110.62.118:443 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 5yam4acfirarda22.xyz udp
US 1.1.1.1:53 5yam8acfirarda22.xyz udp
NL 79.110.62.118:443 tcp
GB 142.250.187.206:443 tcp
US 1.1.1.1:53 android.apis.google.com udp
GB 216.58.212.238:443 android.apis.google.com tcp
US 1.1.1.1:53 3yamacfirarda22.xyz udp
NL 79.110.62.121:443 3yamacfirarda22.xyz tcp

Files

/data/data/com.laughschool0/cache/gixypdv

MD5 f9294b7e7c2537a1bc2c48cea85f4202
SHA1 0ecd38e90cc33356055b18b93fc1b1941285f6c6
SHA256 b48849f18e0a75946885a3d2a1b01f090509d4b80e0515c1a5dc1c3fdec5ac55
SHA512 3d146a04ae907123d9926b5a062fd01ab93b2fccbb4a0be4552dc2b4c7de76042e447ed92e3db9cb2db4069f78a00f6695c70f8f46d3ce5afafad90b0e83d1c4

/data/data/com.laughschool0/kl.txt

MD5 6311c3fd15588bb5c126e6c28ff5fffe
SHA1 ce81d136fce31779f4dd62e20bdaf99c91e2fc57
SHA256 8b82f6032e29a2b5c96031a3630fb6173d12ff0295bc20bb21b877d08f0812d8
SHA512 2975fe2e94b6a8adc9cfc1a865ad113772b54572883a537b02a16dd2d029c0f7d9cca3b154fd849bdfe978e18b396bcf9fa6e67e7c61f92bdc089a29a9c355c6

/data/data/com.laughschool0/kl.txt

MD5 f61c7ebebb8df5e719df87913d099871
SHA1 4f351bfd65c15e10c34d09bf31b7f8892b94b3b8
SHA256 0234dd53828ab0d2900d8978b00c881c952089a3a9a46e9188dd5475d7bca5bf
SHA512 7eb8ac20400b0a713afc31d19b15df9d304743a4123b18c1a575a0e552033e2ed34c38eb7f09cf86ab587cbfd7ef88e58bff9b367350ebeef6c6dc79f8dc041c

/data/data/com.laughschool0/cache/oat/gixypdv.cur.prof

MD5 475e4de0a0cfaab0575cc35ac15477f4
SHA1 c79fa8bc7ed7e680233424ee804b5a9a803c4a8c
SHA256 825d95bc14b75d283e6135f06c4f178d88f233e283a8d4702b23588f4d73f237
SHA512 c32723d42a6bc4907c8f2d21689c08eca78d6e18d17ad1d23f1e8c6ce7c103de34e0344a218e17fe8a938b004a089a7bdefb6a48cddcb45ff1e9aa1193221abf