Malware Analysis Report

2024-07-28 11:39

Sample ID 240630-14m2caxcmb
Target cc0baf15ed7406cfd19465495b75c29e381db401188c9f14f10654da775a3ab6.bin
SHA256 cc0baf15ed7406cfd19465495b75c29e381db401188c9f14f10654da775a3ab6
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

cc0baf15ed7406cfd19465495b75c29e381db401188c9f14f10654da775a3ab6

Threat Level: Known bad

The file cc0baf15ed7406cfd19465495b75c29e381db401188c9f14f10654da775a3ab6.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

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

Loads dropped Dex/Jar

Declares services with permission to bind to the system

Queries the mobile country code (MCC)

Requests modifying system settings.

Declares broadcast receivers with permission to handle system events

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

Performs UI accessibility actions on behalf of the user

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).

Requests dangerous framework permissions

Reads information about phone network operator.

Acquires the wake lock

Makes use of the framework's foreground persistence service

Uses Crypto APIs (Might try to encrypt user data)

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

MITRE ATT&CK Matrix

N/A

Analysis: static1

Detonation Overview

Reported

2024-06-30 22:12

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 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 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

2024-06-30 22:12

Reported

2024-06-30 22:25

Platform

android-x86-arm-20240624-en

Max time kernel

178s

Max time network

185s

Command Line

com.quickletter5

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.quickletter5/cache/ifgkabesekgqv N/A N/A
N/A /data/user/0/com.quickletter5/cache/ifgkabesekgqv 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.quickletter5

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 biribasganidurdursunn.com udp
US 1.1.1.1:53 usomapompaliyorum.com udp
US 1.1.1.1:53 bassganndomaingitti.com udp
US 1.1.1.1:53 usomukarimyaptimbasgaaan.com udp
US 1.1.1.1:53 basgaancosturuyor.com udp
US 1.1.1.1:53 basgaaanpompaaa.com udp
RU 193.143.1.9:443 basgaancosturuyor.com tcp
RU 193.143.1.9:443 basgaancosturuyor.com tcp
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
RU 193.143.1.9:443 basgaancosturuyor.com tcp
RU 193.143.1.9:443 basgaancosturuyor.com tcp
RU 193.143.1.9:443 basgaancosturuyor.com tcp
RU 193.143.1.9:443 basgaancosturuyor.com tcp
RU 193.143.1.9:443 basgaancosturuyor.com tcp
RU 193.143.1.9:443 basgaancosturuyor.com tcp
RU 193.143.1.9:443 basgaancosturuyor.com tcp

Files

/data/data/com.quickletter5/cache/ifgkabesekgqv

MD5 56320cfe7cf4ae96fa8f2221cbd66ce7
SHA1 a9beaee2256f6803e7e0197e100c7db8473e087c
SHA256 fa5708b8740601276a5140c11ab214ac04a0217f5491f1298f84fc7713c6ba1b
SHA512 1df5ba046749930fb84aab260f00c137b04aa1f33826f130d91bd1431cbdc0861c9be6575f3b32f097070b17c3fe058317a6cb0c76fff9da7fe018a63785d557

/data/data/com.quickletter5/cache/oat/ifgkabesekgqv.cur.prof

MD5 bbf4356545a1a0e6b57c8b6b23c4bee0
SHA1 f60e477aae3cc5b9f2b910fa6e076db1df8ac9ae
SHA256 5ff757eb7b89ec49e242d457127a43b2c1fd198fcdf3af80afc1255398297de9
SHA512 efdb0e4cbf908a950b6f2990ac4257898a99dcfbb3b170acd76084a995417c7a4914376e94c68427991fe46dc70c926c50679879c953eb20a6f786989abacf28

Analysis: behavioral2

Detonation Overview

Submitted

2024-06-30 22:12

Reported

2024-06-30 22:25

Platform

android-33-x64-arm64-20240624-en

Max time kernel

179s

Max time network

187s

Command Line

com.quickletter5

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.quickletter5/cache/ifgkabesekgqv 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

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.quickletter5

Network

Country Destination Domain Proto
GB 216.58.201.100:443 udp
GB 216.58.201.100:443 tcp
GB 216.58.201.100:443 tcp
N/A 224.0.0.251:5353 udp
US 1.1.1.1:53 basgaaanpompaaa.com udp
US 1.1.1.1:53 biribasganidurdursunn.com udp
US 1.1.1.1:53 usomukarimyaptimbasgaaan.com udp
US 1.1.1.1:53 usomapompaliyorum.com udp
US 1.1.1.1:53 bassganndomaingitti.com udp
US 1.1.1.1:53 basgaancosturuyor.com udp
RU 193.143.1.9:443 basgaancosturuyor.com tcp
RU 193.143.1.9:443 basgaancosturuyor.com tcp
GB 216.58.201.100:443 udp
GB 142.250.200.36:443 udp
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
RU 193.143.1.9:443 basgaancosturuyor.com tcp
RU 193.143.1.9:443 basgaancosturuyor.com tcp
RU 193.143.1.9:443 basgaancosturuyor.com tcp
RU 193.143.1.9:443 basgaancosturuyor.com tcp
RU 193.143.1.9:443 basgaancosturuyor.com tcp
US 1.1.1.1:53 www.google.com udp
GB 142.250.178.4:443 www.google.com tcp
RU 193.143.1.9:443 basgaancosturuyor.com tcp
RU 193.143.1.9:443 basgaancosturuyor.com tcp
RU 193.143.1.9:443 basgaancosturuyor.com tcp
RU 193.143.1.9:443 basgaancosturuyor.com tcp
RU 193.143.1.9:443 basgaancosturuyor.com tcp
RU 193.143.1.9:443 basgaancosturuyor.com tcp
RU 193.143.1.9:443 basgaancosturuyor.com tcp
RU 193.143.1.9:443 basgaancosturuyor.com tcp
GB 142.250.178.4:443 www.google.com tcp
RU 193.143.1.9:443 basgaancosturuyor.com tcp
RU 193.143.1.9:443 basgaancosturuyor.com tcp
RU 193.143.1.9:443 basgaancosturuyor.com tcp

Files

/data/data/com.quickletter5/cache/ifgkabesekgqv

MD5 56320cfe7cf4ae96fa8f2221cbd66ce7
SHA1 a9beaee2256f6803e7e0197e100c7db8473e087c
SHA256 fa5708b8740601276a5140c11ab214ac04a0217f5491f1298f84fc7713c6ba1b
SHA512 1df5ba046749930fb84aab260f00c137b04aa1f33826f130d91bd1431cbdc0861c9be6575f3b32f097070b17c3fe058317a6cb0c76fff9da7fe018a63785d557

/data/data/com.quickletter5/cache/oat/ifgkabesekgqv.cur.prof

MD5 000bfca16531c955250791a64c2fa84f
SHA1 9553e55cdc4dffd1e671c6a86f6e6dcf8521cdbd
SHA256 c02e1e6282bf47ecd1d208b4080dcd39f0210875369886a3177401b538ebaee3
SHA512 1c2e7a4d38a720111a9a88885b95ff1b8a24d3c82597b8ff465b4b1419011b5b2677e729e3313f1201ee2b42b8eea7c5b48517a1cfe2e5c28b185bdbf35cdbeb