Analysis Overview
SHA256
4a55b500b6f19a08245fd9a06601933fdc5b7e1ab19975c0058dcc7cd58d2a4f
Threat Level: Known bad
The file 4a55b500b6f19a08245fd9a06601933fdc5b7e1ab19975c0058dcc7cd58d2a4f.bin was found to be: Known bad.
Malicious Activity Summary
Ermac
Removes its main activity from the application launcher
Queries the phone number (MSISDN for GSM devices)
Obtains sensitive information copied to the device clipboard
Makes use of the framework's Accessibility service
Requests disabling of battery optimizations (often used to enable hiding in the background).
Declares services with permission to bind to the system
Makes use of the framework's foreground persistence service
Queries the unique device ID (IMEI, MEID, IMSI)
Performs UI accessibility actions on behalf of the user
Acquires the wake lock
Queries the mobile country code (MCC)
Reads information about phone network operator.
Requests dangerous framework permissions
Declares broadcast receivers with permission to handle system events
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
Analysis: static1
Detonation Overview
Reported
2024-07-11 22:07
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 |
Requests dangerous framework permissions
| Description | Indicator | Process | Target |
| Allows an application to request installing packages. | android.permission.REQUEST_INSTALL_PACKAGES | 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 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 read the user's contacts data. | android.permission.READ_CONTACTS | N/A | N/A |
| Allows access to the list of accounts in the Accounts Service. | android.permission.GET_ACCOUNTS | 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 read access to the device's phone number(s). | android.permission.READ_PHONE_NUMBERS | N/A | N/A |
| Allows an app to create windows using the type LayoutParams.TYPE_APPLICATION_OVERLAY, shown on top of all other apps. | android.permission.SYSTEM_ALERT_WINDOW | N/A | N/A |
Analysis: behavioral1
Detonation Overview
Submitted
2024-07-11 22:07
Reported
2024-07-11 22:20
Platform
android-x86-arm-20240624-en
Max time kernel
178s
Max time network
182s
Command Line
Signatures
Ermac
Removes its main activity from the application launcher
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Makes use of the framework's Accessibility service
| 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 the phone number (MSISDN for GSM devices)
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
| Description | Indicator | Process | Target |
| Framework service call | android.app.IActivityManager.setServiceForeground | N/A | N/A |
Performs UI accessibility actions on behalf of the user
| 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 |
| 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)
| 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)
Requests disabling of battery optimizations (often used to enable hiding in the background).
| Description | Indicator | Process | Target |
| Intent action | android.settings.REQUEST_IGNORE_BATTERY_OPTIMIZATIONS | N/A | N/A |
Registers a broadcast receiver at runtime (usually for listening for system events)
| Description | Indicator | Process | Target |
| Framework service call | android.app.IActivityManager.registerReceiver | N/A | N/A |
Uses Crypto APIs (Might try to encrypt user data)
| 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
nusku.ermacv2.apk
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 |
| SG | 89.213.56.192:3434 | tcp | |
| SG | 89.213.56.192:3434 | tcp | |
| SG | 89.213.56.192:3434 | tcp | |
| GB | 142.250.187.206:443 | tcp | |
| US | 1.1.1.1:53 | android.apis.google.com | udp |
| GB | 142.250.180.14:443 | android.apis.google.com | tcp |
| SG | 89.213.56.192:3434 | tcp | |
| SG | 89.213.56.192:3434 | tcp |
Files
Analysis: behavioral2
Detonation Overview
Submitted
2024-07-11 22:07
Reported
2024-07-11 22:20
Platform
android-x64-20240624-en
Max time kernel
175s
Max time network
176s
Command Line
Signatures
Ermac
Removes its main activity from the application launcher
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Makes use of the framework's Accessibility service
| 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 |
| Framework service call | android.accessibilityservice.IAccessibilityServiceConnection.findAccessibilityNodeInfosByText | N/A | N/A |
Obtains sensitive information copied to the device clipboard
| Description | Indicator | Process | Target |
| Framework service call | android.content.IClipboard.addPrimaryClipChangedListener | N/A | N/A |
Queries the phone number (MSISDN for GSM devices)
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
| Description | Indicator | Process | Target |
| Framework service call | android.app.IActivityManager.setServiceForeground | N/A | N/A |
Performs UI accessibility actions on behalf of the user
| 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)
| 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)
Reads information about phone network operator.
Registers a broadcast receiver at runtime (usually for listening for system events)
| Description | Indicator | Process | Target |
| Framework service call | android.app.IActivityManager.registerReceiver | N/A | N/A |
Uses Crypto APIs (Might try to encrypt user data)
| 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
nusku.ermacv2.apk
Network
| Country | Destination | Domain | Proto |
| N/A | 224.0.0.251:5353 | udp | |
| SG | 89.213.56.192:3434 | tcp | |
| US | 1.1.1.1:53 | ssl.google-analytics.com | udp |
| GB | 142.250.200.8:443 | ssl.google-analytics.com | tcp |
| GB | 142.250.187.206:443 | tcp | |
| US | 1.1.1.1:53 | android.apis.google.com | udp |
| GB | 216.58.204.78:443 | android.apis.google.com | tcp |
| SG | 89.213.56.192:3434 | tcp | |
| SG | 89.213.56.192:3434 | tcp | |
| SG | 89.213.56.192:3434 | tcp | |
| GB | 216.58.201.100:443 | tcp | |
| GB | 216.58.201.100:443 | tcp | |
| GB | 172.217.16.238:443 | tcp | |
| GB | 216.58.201.98:443 | tcp | |
| SG | 89.213.56.192:3434 | tcp |
Files
Analysis: behavioral3
Detonation Overview
Submitted
2024-07-11 22:07
Reported
2024-07-11 22:20
Platform
android-x64-arm64-20240624-en
Max time kernel
179s
Max time network
187s
Command Line
Signatures
Ermac
Removes its main activity from the application launcher
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Makes use of the framework's Accessibility service
| Description | Indicator | Process | Target |
| Framework service call | android.accessibilityservice.IAccessibilityServiceConnection.findAccessibilityNodeInfosByViewId | N/A | N/A |
| Framework service call | android.accessibilityservice.IAccessibilityServiceConnection.findAccessibilityNodeInfosByText | N/A | N/A |
| Framework service call | android.accessibilityservice.IAccessibilityServiceConnection.findAccessibilityNodeInfoByAccessibilityId | N/A | N/A |
Obtains sensitive information copied to the device clipboard
| Description | Indicator | Process | Target |
| Framework service call | android.content.IClipboard.addPrimaryClipChangedListener | N/A | N/A |
Queries the phone number (MSISDN for GSM devices)
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
| Description | Indicator | Process | Target |
| Framework service call | android.app.IActivityManager.setServiceForeground | N/A | N/A |
Performs UI accessibility actions on behalf of the user
| 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)
| 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)
Reads information about phone network operator.
Requests disabling of battery optimizations (often used to enable hiding in the background).
| 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)
| 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
nusku.ermacv2.apk
Network
| Country | Destination | Domain | Proto |
| N/A | 224.0.0.251:5353 | udp | |
| GB | 142.250.187.206:443 | tcp | |
| GB | 142.250.187.206:443 | tcp | |
| US | 1.1.1.1:53 | android.apis.google.com | udp |
| GB | 216.58.204.78:443 | android.apis.google.com | tcp |
| SG | 89.213.56.192:3434 | tcp | |
| US | 1.1.1.1:53 | ssl.google-analytics.com | udp |
| GB | 216.58.212.232:443 | ssl.google-analytics.com | tcp |
| SG | 89.213.56.192:3434 | tcp | |
| SG | 89.213.56.192:3434 | tcp | |
| SG | 89.213.56.192:3434 | tcp | |
| GB | 142.250.187.228:443 | tcp | |
| GB | 142.250.187.228:443 | tcp | |
| SG | 89.213.56.192:3434 | tcp |