ermac | 9b9bb379b89f1d4090625b0ea46e00d8369c40ce05d11fc029f0839ab85e76d4

Analysis

max time kernel
147s
max time network
150s
platform
android-10_x64
resource
android-x64-20240910-en
resource tags

arch:x64arch:x86image:android-x64-20240910-enlocale:en-usos:android-10-x64system
submitted
29-09-2024 22:01

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General

Target

9b9bb379b89f1d4090625b0ea46e00d8369c40ce05d11fc029f0839ab85e76d4.apk
Size

976KB
MD5

d0aff4eef458409dfd5adde66bdfebe1
SHA1

785fb59422cef87b9fa2bede3d7659bb8b900bff
SHA256

9b9bb379b89f1d4090625b0ea46e00d8369c40ce05d11fc029f0839ab85e76d4
SHA512

052f35492dc814f3e01b2ef82242141ec12ca35f2caf0593616622eacdd4a915aeff0346c279c1dbcd58754edf1ced039f8cb761ab763710eb2e7a5556a8812a
SSDEEP

24576:SIg/HJPc5OeXDmQDCFjpIGy6fZfC+/s91jNL30MMdvXw0R:SIg/tWSpIGyAqhuvA0R

Score

10^/10

ermac banker collection credential_access discovery evasion impact infostealer persistence stealth trojan

Malware Config

Extracted

Family

ermac

http://193.218.190.21:3434

AES_key

Signatures

Ermac
An Android banking trojan first seen in July 2021.
banker trojan infostealer ermac

Removes its main activity from the application launcher 1 TTPs 1 IoCs

stealth trojan evasion

Suppress Application Icon

T1628.001

pid	Process
5237	com.wizehicemada.yixu

Makes use of the framework's Accessibility service 4 TTPs 3 IoCs

Retrieves information displayed on the phone screen using AccessibilityService.

collection evasion credential_access

Input Injection

T1516

Screen Capture

T1513

Keylogging

T1417.001

GUI Input Capture

T1417.002

description	ioc	Process
Framework service call	android.accessibilityservice.IAccessibilityServiceConnection.findAccessibilityNodeInfoByAccessibilityId	com.wizehicemada.yixu
Framework service call	android.accessibilityservice.IAccessibilityServiceConnection.findAccessibilityNodeInfosByViewId	com.wizehicemada.yixu
Framework service call	android.accessibilityservice.IAccessibilityServiceConnection.findAccessibilityNodeInfosByText	com.wizehicemada.yixu

Queries a list of all the installed applications on the device (Might be used in an attempt to overlay legitimate apps) 1 TTPs
banker discovery

Security Software Discovery
T1418.001
Queries the phone number (MSISDN for GSM devices) 1 TTPs
discovery

System Network Configuration Discovery
T1422

Acquires the wake lock 1 IoCs

description	ioc	Process
Framework service call	android.os.IPowerManager.acquireWakeLock	com.wizehicemada.yixu

Makes use of the framework's foreground persistence service 1 TTPs 1 IoCs

Application may abuse the framework's foreground service to continue running in the foreground.

evasion persistence

Foreground Persistence

T1541

description	ioc	Process
Framework service call	android.app.IActivityManager.setServiceForeground	com.wizehicemada.yixu

Performs UI accessibility actions on behalf of the user 1 TTPs 30 IoCs

Application may abuse the accessibility service to prevent their removal.

evasion

Prevent Application Removal

T1629.001

ioc	Process
android.accessibilityservice.IAccessibilityServiceConnection.performGlobalAction	com.wizehicemada.yixu
android.accessibilityservice.IAccessibilityServiceConnection.performGlobalAction	com.wizehicemada.yixu
android.accessibilityservice.IAccessibilityServiceConnection.performGlobalAction	com.wizehicemada.yixu
android.accessibilityservice.IAccessibilityServiceConnection.performGlobalAction	com.wizehicemada.yixu
android.accessibilityservice.IAccessibilityServiceConnection.performGlobalAction	com.wizehicemada.yixu
android.accessibilityservice.IAccessibilityServiceConnection.performGlobalAction	com.wizehicemada.yixu
android.accessibilityservice.IAccessibilityServiceConnection.performGlobalAction	com.wizehicemada.yixu
android.accessibilityservice.IAccessibilityServiceConnection.performGlobalAction	com.wizehicemada.yixu
android.accessibilityservice.IAccessibilityServiceConnection.performGlobalAction	com.wizehicemada.yixu
android.accessibilityservice.IAccessibilityServiceConnection.performGlobalAction	com.wizehicemada.yixu
android.accessibilityservice.IAccessibilityServiceConnection.performGlobalAction	com.wizehicemada.yixu
android.accessibilityservice.IAccessibilityServiceConnection.performGlobalAction	com.wizehicemada.yixu
android.accessibilityservice.IAccessibilityServiceConnection.performGlobalAction	com.wizehicemada.yixu
android.accessibilityservice.IAccessibilityServiceConnection.performGlobalAction	com.wizehicemada.yixu
android.accessibilityservice.IAccessibilityServiceConnection.performGlobalAction	com.wizehicemada.yixu
android.accessibilityservice.IAccessibilityServiceConnection.performGlobalAction	com.wizehicemada.yixu
android.accessibilityservice.IAccessibilityServiceConnection.performGlobalAction	com.wizehicemada.yixu
android.accessibilityservice.IAccessibilityServiceConnection.performGlobalAction	com.wizehicemada.yixu
android.accessibilityservice.IAccessibilityServiceConnection.performGlobalAction	com.wizehicemada.yixu
android.accessibilityservice.IAccessibilityServiceConnection.performGlobalAction	com.wizehicemada.yixu
android.accessibilityservice.IAccessibilityServiceConnection.performGlobalAction	com.wizehicemada.yixu
android.accessibilityservice.IAccessibilityServiceConnection.performGlobalAction	com.wizehicemada.yixu
android.accessibilityservice.IAccessibilityServiceConnection.performGlobalAction	com.wizehicemada.yixu
android.accessibilityservice.IAccessibilityServiceConnection.performGlobalAction	com.wizehicemada.yixu
android.accessibilityservice.IAccessibilityServiceConnection.performGlobalAction	com.wizehicemada.yixu
android.accessibilityservice.IAccessibilityServiceConnection.performGlobalAction	com.wizehicemada.yixu
android.accessibilityservice.IAccessibilityServiceConnection.performGlobalAction	com.wizehicemada.yixu
android.accessibilityservice.IAccessibilityServiceConnection.performGlobalAction	com.wizehicemada.yixu
android.accessibilityservice.IAccessibilityServiceConnection.performGlobalAction	com.wizehicemada.yixu
android.accessibilityservice.IAccessibilityServiceConnection.performGlobalAction	com.wizehicemada.yixu

Queries the mobile country code (MCC) 1 TTPs 1 IoCs

discovery

System Network Configuration Discovery

T1422

description	ioc	Process
Framework service call	com.android.internal.telephony.ITelephony.getNetworkCountryIsoForPhone	com.wizehicemada.yixu

Queries the unique device ID (IMEI, MEID, IMSI) 1 TTPs
discovery

System Network Configuration Discovery
T1422
Reads information about phone network operator. 1 TTPs
discovery

System Network Configuration Discovery
T1422

Uses Crypto APIs (Might try to encrypt user data) 1 TTPs 1 IoCs

impact

Data Encrypted for Impact

T1471

description	ioc	Process
Framework API call	javax.crypto.Cipher.doFinal	com.wizehicemada.yixu

com.wizehicemada.yixu
1⤵
- Removes its main activity from the application launcher
- Makes use of the framework's Accessibility service
- Acquires the wake lock
- Makes use of the framework's foreground persistence service
- Performs UI accessibility actions on behalf of the user
- Queries the mobile country code (MCC)
- Uses Crypto APIs (Might try to encrypt user data)
PID:5237