Malware Analysis Report

2024-09-09 13:48

Sample ID 240606-kvhghacb21
Target 5904e4d17b989220ae89a165c814e3cf4f772a51b7dda3a24d173939707264fd
SHA256 5904e4d17b989220ae89a165c814e3cf4f772a51b7dda3a24d173939707264fd
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

5904e4d17b989220ae89a165c814e3cf4f772a51b7dda3a24d173939707264fd

Threat Level: Known bad

The file 5904e4d17b989220ae89a165c814e3cf4f772a51b7dda3a24d173939707264fd 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

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

Queries the phone number (MSISDN for GSM devices)

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

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

Declares services with permission to bind to the system

Requests dangerous framework permissions

Performs UI accessibility actions on behalf of the user

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

Requests modifying system settings.

Queries the mobile country code (MCC)

Reads information about phone network operator.

Acquires the wake lock

Declares broadcast receivers with permission to handle system events

Makes use of the framework's foreground persistence service

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

Uses Crypto APIs (Might try to encrypt user data)

MITRE ATT&CK Matrix

N/A

Analysis: static1

Detonation Overview

Reported

2024-06-06 08:55

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

2024-06-06 08:55

Reported

2024-06-06 08:58

Platform

android-x86-arm-20240603-en

Max time kernel

177s

Max time network

184s

Command Line

com.welltheydlg

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.welltheydlg/cache/cqsejysvklu N/A N/A
N/A /data/user/0/com.welltheydlg/cache/cqsejysvklu 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.findAccessibilityNodeInfosByText N/A N/A
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

Processes

com.welltheydlg

Network

Country Destination Domain Proto
N/A 224.0.0.251:5353 udp
RU 45.9.74.60:443 tcp
US 1.1.1.1:53 www.ip-api.com udp
US 208.95.112.1:80 www.ip-api.com tcp
RU 45.9.74.136:443 45.9.74.136 tcp
US 1.1.1.1:53 aciktim223432516.xyz udp
US 1.1.1.1:53 acizac1322343.xyz udp
RU 45.9.74.166:443 tcp
US 1.1.1.1:53 static.xx.fbcdn.net udp
GB 163.70.147.23:443 static.xx.fbcdn.net tcp
GB 216.58.204.78:443 tcp
US 1.1.1.1:53 android.apis.google.com udp
GB 142.250.187.238:443 android.apis.google.com tcp
US 1.1.1.1:53 www.google.com udp
GB 216.58.212.196:443 www.google.com udp
GB 216.58.212.196:443 www.google.com tcp
GB 216.58.212.202:443 tcp
US 1.1.1.1:53 semanticlocation-pa.googleapis.com udp
GB 172.217.169.42:443 semanticlocation-pa.googleapis.com tcp
GB 216.58.212.202:443 semanticlocation-pa.googleapis.com tcp
US 1.1.1.1:53 acizac12141.xyz udp
US 1.1.1.1:53 azisswravaas.xyz udp
RU 45.9.74.136:443 45.9.74.136 tcp
RU 45.9.74.60:443 tcp
RU 45.9.74.166:443 tcp
RU 45.9.74.60:443 tcp
GB 142.250.187.238:443 android.apis.google.com tcp
GB 142.250.178.10:443 semanticlocation-pa.googleapis.com tcp
GB 142.250.187.194:443 tcp
GB 172.217.169.42:443 semanticlocation-pa.googleapis.com tcp
GB 216.58.212.202:443 semanticlocation-pa.googleapis.com tcp
GB 172.217.169.42:443 semanticlocation-pa.googleapis.com tcp
GB 172.217.169.42:443 semanticlocation-pa.googleapis.com tcp
RU 45.9.74.166:443 tcp
RU 45.9.74.136:443 45.9.74.136 tcp
RU 45.9.74.60:443 tcp
RU 45.9.74.136:443 45.9.74.136 tcp
RU 45.9.74.166:443 tcp
RU 45.9.74.136:443 45.9.74.136 tcp
RU 45.9.74.60:443 tcp

Files

/data/data/com.welltheydlg/cache/cqsejysvklu

MD5 39bd74a7f83cd0706cc5124927346637
SHA1 4a1f8420bf74d4a98c37b88f765c1f63bf08914b
SHA256 425812657637880ef8c8bd0f6f49326132b04458ad7ceab373ed9cb7db411e51
SHA512 06f34af5627fb9e897913ee2885bb27b2c065e44c72b13b6aa41b66d2a2bc3b2ba1817add97f68fdea59e5c0705783701dbca9c8c41d7d7c7a6134e4787472ae

/data/data/com.welltheydlg/cache/oat/cqsejysvklu.cur.prof

MD5 e115dcf8793154fe46daeea87da38979
SHA1 12ac5fd91751ff9483d0006d51eddbd99b4bb2f4
SHA256 876fbdc42808b1af360531f149c177ba17a6ad0d13620f5d6173db798c68a53f
SHA512 d5935df940d261e2ccbafcf598e5376a067736fb86ecd63ebf745b4d2bceffad79ca37eddf8a931c5665c68fad75248f51c18fce5e3decdc3418d78a202bd7c9

/data/data/com.welltheydlg/cache/oat/cqsejysvklu.cur.prof

MD5 ff175df87e2d15037d7ab7a6a15c8cc6
SHA1 d37009679e03717f71b2093d2a3808f15a683aec
SHA256 0899d83161f80973903c6818022b9cc13f5af17922f114e8ebf207459abc6376
SHA512 9ecaf8dbefe54bd076a1825e94a87dc496541849b113d0099b2cf607d52aaf816da13bc109d1f2f34410c966d3b47955b1a85ad1600d2fbbb2c88298bb20956d

Analysis: behavioral2

Detonation Overview

Submitted

2024-06-06 08:55

Reported

2024-06-06 08:58

Platform

android-x64-20240603-en

Max time kernel

179s

Max time network

185s

Command Line

com.welltheydlg

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.welltheydlg/cache/cqsejysvklu N/A N/A
N/A /data/user/0/com.welltheydlg/cache/cqsejysvklu 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

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.welltheydlg

Network

Country Destination Domain Proto
N/A 224.0.0.251:5353 udp
GB 216.58.201.106:443 tcp
US 1.1.1.1:53 android.apis.google.com udp
GB 142.250.187.206:443 android.apis.google.com tcp
US 1.1.1.1:53 acizac1322343.xyz udp
US 1.1.1.1:53 ssl.google-analytics.com udp
GB 216.58.204.72:443 ssl.google-analytics.com tcp
US 1.1.1.1:53 www.ip-api.com udp
US 1.1.1.1:53 aciktim223432516.xyz udp
US 208.95.112.1:80 www.ip-api.com tcp
US 1.1.1.1:53 azisswravaas.xyz udp
RU 45.9.74.136:443 45.9.74.136 tcp
RU 45.9.74.166:443 tcp
US 1.1.1.1:53 acizac12141.xyz udp
RU 45.9.74.166:443 tcp
GB 172.217.169.14:443 tcp
GB 142.250.200.34:443 tcp
GB 142.250.178.4:443 tcp
GB 142.250.178.4:443 tcp
RU 45.9.74.60:443 tcp
GB 172.217.169.46:443 tcp
RU 45.9.74.136:443 45.9.74.136 tcp
RU 45.9.74.60:443 tcp
RU 45.9.74.60:443 tcp
RU 45.9.74.60:443 tcp
RU 45.9.74.166:443 tcp
RU 45.9.74.136:443 45.9.74.136 tcp
RU 45.9.74.166:443 tcp
RU 45.9.74.60:443 tcp
RU 45.9.74.166:443 tcp
RU 45.9.74.166:443 tcp
RU 45.9.74.166:443 tcp
RU 45.9.74.136:443 45.9.74.136 tcp
RU 45.9.74.166:443 tcp
RU 45.9.74.60:443 tcp
RU 45.9.74.166:443 tcp
RU 45.9.74.60:443 tcp
RU 45.9.74.166:443 tcp

Files

/data/data/com.welltheydlg/cache/cqsejysvklu

MD5 39bd74a7f83cd0706cc5124927346637
SHA1 4a1f8420bf74d4a98c37b88f765c1f63bf08914b
SHA256 425812657637880ef8c8bd0f6f49326132b04458ad7ceab373ed9cb7db411e51
SHA512 06f34af5627fb9e897913ee2885bb27b2c065e44c72b13b6aa41b66d2a2bc3b2ba1817add97f68fdea59e5c0705783701dbca9c8c41d7d7c7a6134e4787472ae

/data/data/com.welltheydlg/cache/oat/cqsejysvklu.cur.prof

MD5 7cedeba2f65f70b1b3a05f908846e7b8
SHA1 612221bc9ca6076851be1f4886be4371c97e0a32
SHA256 e063bbbbf5f3f52679871035383f4bd35e0bfada261210df8b6c8096e91ebca5
SHA512 ff24444906abedd902eafd45983ca62f20467c015c99748061a2cb29e6f3e9f0752b7bddc48d63716a4cc008f3f123015634503da04e38c772c05f48b2166a1d