Malware Analysis Report

2024-09-09 13:44

Sample ID 240521-1wsa4abf9t
Target 5e48e3c0554053eb58550d1bbaf1bf4d50d6ea75c4440502e40301c76b800db6.bin
SHA256 5e48e3c0554053eb58550d1bbaf1bf4d50d6ea75c4440502e40301c76b800db6
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

5e48e3c0554053eb58550d1bbaf1bf4d50d6ea75c4440502e40301c76b800db6

Threat Level: Known bad

The file 5e48e3c0554053eb58550d1bbaf1bf4d50d6ea75c4440502e40301c76b800db6.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

Prevents application removal

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

Makes use of the framework's Accessibility service

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

Removes its main activity from the application launcher

Queries the phone number (MSISDN for GSM devices)

Makes use of the framework's foreground persistence service

Queries the mobile country code (MCC)

Loads dropped Dex/Jar

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

Declares services with permission to bind to the system

Acquires the wake lock

Declares broadcast receivers with permission to handle system events

Reads information about phone network operator.

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

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

Requests dangerous framework permissions

Uses Crypto APIs (Might try to encrypt user data)

MITRE ATT&CK Matrix

N/A

Analysis: static1

Detonation Overview

Reported

2024-05-21 22:00

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 app to access location in the background. android.permission.ACCESS_BACKGROUND_LOCATION 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 write to external storage. android.permission.WRITE_EXTERNAL_STORAGE N/A N/A
Allows an application to record audio. android.permission.RECORD_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 read or write the system settings. android.permission.WRITE_SETTINGS N/A N/A
Allows an application to send SMS messages. android.permission.SEND_SMS 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
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

Analysis: behavioral1

Detonation Overview

Submitted

2024-05-21 22:00

Reported

2024-05-21 22:09

Platform

android-x86-arm-20240514-en

Max time kernel

28s

Max time network

140s

Command Line

com.keepnoticenfyr

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

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

Loads dropped Dex/Jar

evasion
Description Indicator Process Target
N/A /data/user/0/com.keepnoticenfyr/app_DynamicOptDex/eZm.json N/A N/A
N/A /data/user/0/com.keepnoticenfyr/app_DynamicOptDex/eZm.json N/A N/A
N/A /data/user/0/com.keepnoticenfyr/cache/arckled N/A N/A
N/A /data/user/0/com.keepnoticenfyr/cache/arckled 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

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.keepnoticenfyr

/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.keepnoticenfyr/app_DynamicOptDex/eZm.json --output-vdex-fd=41 --oat-fd=42 --oat-location=/data/user/0/com.keepnoticenfyr/app_DynamicOptDex/oat/x86/eZm.odex --compiler-filter=quicken --class-loader-context=&

Network

Country Destination Domain Proto
GB 216.58.213.3:443 tcp
GB 142.250.200.14:443 tcp
N/A 224.0.0.251:5353 udp
GB 142.250.200.10:443 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 xijunggao.com udp
US 1.1.1.1:53 abgggpoh.top udp
US 1.1.1.1:53 nisiqnisiq.com udp
US 1.1.1.1:53 sabgggsabggg.top udp
US 1.1.1.1:53 sabgggsabgggsabggg.top udp
US 1.1.1.1:53 junggvbvb.com udp
US 1.1.1.1:53 junggvbv.com udp
US 1.1.1.1:53 siqnisiq.com udp
US 1.1.1.1:53 sabgggsabggg.com udp
US 1.1.1.1:53 nisiqnisiq.top udp
US 1.1.1.1:53 fujetgue.shop udp
GB 172.217.169.14:443 tcp
US 1.1.1.1:53 android.apis.google.com udp
GB 142.250.200.14:443 android.apis.google.com tcp
US 1.1.1.1:53 semanticlocation-pa.googleapis.com udp
GB 142.250.200.10:443 semanticlocation-pa.googleapis.com tcp

Files

/data/data/com.keepnoticenfyr/app_DynamicOptDex/eZm.json

MD5 70f87cb9046a4af7afac6b6eaa9798ef
SHA1 ad47f5f18283496315f12cc30a0fdbd6cc04779f
SHA256 fe50d45f6f1254f9129cb1dd3cb54fec528496367b19cc45802d5da1f24eed96
SHA512 59fbd3d9536fade07323650f4b30e1b2c6a05e1b629966efeb8b8ad80b2954178b0b9a111dea70b5d325cb6bd72de169e8fcb2d394c83e9b5c02a311163e563e

/data/data/com.keepnoticenfyr/app_DynamicOptDex/eZm.json

MD5 3cff1e220aa74b10c5c1406f60a255ba
SHA1 b50e865bf6a59920f83fd314aa323e770fef5ae3
SHA256 d87291ca3570327a328b421d75adb30092fd547ff799f5bca8abc97748e22604
SHA512 046abb34f677d5d9954b4da2ee598f8d2ade9d76fae1da6fcd01043830c677c398520b600af4d534238cd5a3da8d264c034b094dacbb08e381292fe574d89a09

/data/user/0/com.keepnoticenfyr/app_DynamicOptDex/eZm.json

MD5 c343d8b2c6aac8ffbb98f86aa4f88fe5
SHA1 a913ea15a22323f74f1bf7ec22535dc2ec87164c
SHA256 d8564ff2a8ed704dbf46f0977f60be515400a25b5d9f6c8a383df6a3d84845c1
SHA512 840793e45f76f4cfb318f8985eabf2cbf0eaf7da3305dc001fa01317767bafabd3e19b6944d0f575229917835e460f58c571e502e186267d9c1261451d99b114

/data/user/0/com.keepnoticenfyr/app_DynamicOptDex/eZm.json

MD5 78836f7e38bb9222c332641512f91c90
SHA1 a02dc3e846dcb7465f65692d3df3f1197afb5a86
SHA256 4d7fc8f39dc71a72fd3ef48ccf2e43e4df02b52049e81ef1d77bf6c5d0c293e1
SHA512 998409bd3a6677e860dd2d730f32217673201cd7412fbd6a6df31ec63cabdf44027972779469a281d2acd25c798822e6280a47279fd7a1daa9cb7f47e2e23327

/data/data/com.keepnoticenfyr/cache/arckled

MD5 4fd57678b96e666a1a4854f9957b05ac
SHA1 9b37747060e9ecb11ed979cfc555f8555760030c
SHA256 eefa7eac85c72fde00d88404730247aa95f6714b33fcea821b8b7c0c848e3fc7
SHA512 0ca5a4636b7d15a247251f65acba83d50f31263bb0569f4293db2ff7ef013a36dbfe298ceb2dbd8456dd6b7bd878be3f3a39304dbc90131f6f10b6bbce4fe61a

Analysis: behavioral2

Detonation Overview

Submitted

2024-05-21 22:00

Reported

2024-05-21 22:09

Platform

android-33-x64-arm64-20240514-en

Max time kernel

179s

Max time network

170s

Command Line

com.keepnoticenfyr

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

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

Loads dropped Dex/Jar

evasion
Description Indicator Process Target
N/A /data/user/0/com.keepnoticenfyr/app_DynamicOptDex/eZm.json N/A N/A
N/A /data/user/0/com.keepnoticenfyr/cache/arckled 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.keepnoticenfyr

Network

Country Destination Domain Proto
GB 172.217.16.234:443 tcp
GB 142.250.179.228:443 udp
GB 142.250.179.228:443 tcp
GB 142.250.179.228:443 tcp
GB 142.250.179.228:443 udp
N/A 224.0.0.251:5353 udp
GB 172.217.16.238:443 udp
GB 172.217.16.238:443 tcp
GB 172.217.16.238:443 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 sabgggsabggg.com udp
US 1.1.1.1:53 xijunggao.com udp
US 1.1.1.1:53 nisiqnisiq.top udp
US 1.1.1.1:53 nisiqnisiq.com udp
US 1.1.1.1:53 sabgggsabgggsabggg.top udp
US 1.1.1.1:53 sabgggsabggg.top udp
US 1.1.1.1:53 junggvbv.com udp
US 1.1.1.1:53 siqnisiq.com udp
US 1.1.1.1:53 junggvbvb.com udp
US 1.1.1.1:53 abgggpoh.top udp
US 1.1.1.1:53 fujetgue.shop udp
US 1.1.1.1:53 remoteprovisioning.googleapis.com udp
GB 216.58.201.106:443 remoteprovisioning.googleapis.com tcp
GB 172.217.16.234:443 remoteprovisioning.googleapis.com tcp
US 162.159.61.3:443 tcp
US 162.159.61.3:443 tcp
GB 172.217.169.67:443 tcp
GB 172.217.169.67:443 tcp
US 162.159.61.3:443 udp
US 34.104.35.123:80 tcp
GB 142.250.179.228:443 udp
GB 142.250.187.196:443 udp
GB 142.250.187.196:443 tcp
GB 142.250.187.196:443 tcp
GB 172.217.169.67:443 udp
US 1.1.1.1:53 android.apis.google.com udp

Files

/data/user/0/com.keepnoticenfyr/app_DynamicOptDex/eZm.json

MD5 70f87cb9046a4af7afac6b6eaa9798ef
SHA1 ad47f5f18283496315f12cc30a0fdbd6cc04779f
SHA256 fe50d45f6f1254f9129cb1dd3cb54fec528496367b19cc45802d5da1f24eed96
SHA512 59fbd3d9536fade07323650f4b30e1b2c6a05e1b629966efeb8b8ad80b2954178b0b9a111dea70b5d325cb6bd72de169e8fcb2d394c83e9b5c02a311163e563e

/data/user/0/com.keepnoticenfyr/app_DynamicOptDex/eZm.json

MD5 3cff1e220aa74b10c5c1406f60a255ba
SHA1 b50e865bf6a59920f83fd314aa323e770fef5ae3
SHA256 d87291ca3570327a328b421d75adb30092fd547ff799f5bca8abc97748e22604
SHA512 046abb34f677d5d9954b4da2ee598f8d2ade9d76fae1da6fcd01043830c677c398520b600af4d534238cd5a3da8d264c034b094dacbb08e381292fe574d89a09

/data/user/0/com.keepnoticenfyr/app_DynamicOptDex/eZm.json

MD5 c343d8b2c6aac8ffbb98f86aa4f88fe5
SHA1 a913ea15a22323f74f1bf7ec22535dc2ec87164c
SHA256 d8564ff2a8ed704dbf46f0977f60be515400a25b5d9f6c8a383df6a3d84845c1
SHA512 840793e45f76f4cfb318f8985eabf2cbf0eaf7da3305dc001fa01317767bafabd3e19b6944d0f575229917835e460f58c571e502e186267d9c1261451d99b114

/data/user/0/com.keepnoticenfyr/cache/arckled

MD5 4fd57678b96e666a1a4854f9957b05ac
SHA1 9b37747060e9ecb11ed979cfc555f8555760030c
SHA256 eefa7eac85c72fde00d88404730247aa95f6714b33fcea821b8b7c0c848e3fc7
SHA512 0ca5a4636b7d15a247251f65acba83d50f31263bb0569f4293db2ff7ef013a36dbfe298ceb2dbd8456dd6b7bd878be3f3a39304dbc90131f6f10b6bbce4fe61a

/data/user/0/com.keepnoticenfyr/cache/oat/arckled.cur.prof

MD5 01b58b4c2d4d0ad333d55fdd9eb79369
SHA1 b794f075154e33e45fed854d4e82f924d536832e
SHA256 ac3b5d88814e6c9ce5ff892fa04e7f73e76996abfa0d0f0b4a9539289190279c
SHA512 5ac546cc8a515956a5ddec87bd421a100837f5c1d2753377fabe9fd0954e5200e13e4e551c04fec1e8ab5eb8f02c9b27092798a8b240e742b064032415c82699