ermac | d1b1fea5cab3fd1b802f0a1a10fa4e59492d7498365df6054d173558c2a911e1

Analysis

max time kernel
177s
max time network
185s
platform
android_x86
resource
android-x86-arm-20240624-en
resource tags

androidarch:armarch:x86image:android-x86-arm-20240624-enlocale:en-usos:android-9-x86system
submitted
26/08/2024, 22:08

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General

Target

d1b1fea5cab3fd1b802f0a1a10fa4e59492d7498365df6054d173558c2a911e1.apk
Size

915KB
MD5

4aca273aa0043a0f047f02af2256b8f0
SHA1

7b66f0edcd448f38f056cf55a44341f5f8c65004
SHA256

d1b1fea5cab3fd1b802f0a1a10fa4e59492d7498365df6054d173558c2a911e1
SHA512

289e62807db87248ce62da27ea8480ce36883d24afb10dd9653576afa2870c36064f592ab38b644c8d3ec74f92d19da9271427b491742a0d6247e99d504a4abd
SSDEEP

12288:VfV+RZRk4VAeXpR1fTTRsHJqU0QdsFOG328Cm0dy4ForuhuAVFyp3dL1PXkvADSC:P+TLzXCkQUONdL6uhuHzL1vkvuSg/ZLb

Score

10^/10

ermac banker collection credential_access discovery evasion impact infostealer persistence stealth trojan

Malware Config

Extracted

Family

ermac

http://193.111.125.240:8080

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
4249	com.xomimotaxiva.gebuxi

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.xomimotaxiva.gebuxi
Framework service call	android.accessibilityservice.IAccessibilityServiceConnection.findAccessibilityNodeInfosByViewId	com.xomimotaxiva.gebuxi
Framework service call	android.accessibilityservice.IAccessibilityServiceConnection.findAccessibilityNodeInfosByText	com.xomimotaxiva.gebuxi

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.xomimotaxiva.gebuxi

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.xomimotaxiva.gebuxi

Performs UI accessibility actions on behalf of the user 1 TTPs 9 IoCs

Application may abuse the accessibility service to prevent their removal.

evasion

Prevent Application Removal

T1629.001

ioc	Process
android.accessibilityservice.IAccessibilityServiceConnection.performGlobalAction	com.xomimotaxiva.gebuxi
android.accessibilityservice.IAccessibilityServiceConnection.performGlobalAction	com.xomimotaxiva.gebuxi
android.accessibilityservice.IAccessibilityServiceConnection.performGlobalAction	com.xomimotaxiva.gebuxi
android.accessibilityservice.IAccessibilityServiceConnection.performGlobalAction	com.xomimotaxiva.gebuxi
android.accessibilityservice.IAccessibilityServiceConnection.performGlobalAction	com.xomimotaxiva.gebuxi
android.accessibilityservice.IAccessibilityServiceConnection.performGlobalAction	com.xomimotaxiva.gebuxi
android.accessibilityservice.IAccessibilityServiceConnection.performGlobalAction	com.xomimotaxiva.gebuxi
android.accessibilityservice.IAccessibilityServiceConnection.performGlobalAction	com.xomimotaxiva.gebuxi
android.accessibilityservice.IAccessibilityServiceConnection.performGlobalAction	com.xomimotaxiva.gebuxi

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.xomimotaxiva.gebuxi

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

Requests disabling of battery optimizations (often used to enable hiding in the background). 1 TTPs 1 IoCs

evasion

User Evasion

T1628.002

description	ioc	Process
Intent action	android.settings.REQUEST_IGNORE_BATTERY_OPTIMIZATIONS	com.xomimotaxiva.gebuxi

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.xomimotaxiva.gebuxi

com.xomimotaxiva.gebuxi
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)
- Requests disabling of battery optimizations (often used to enable hiding in the background).
- Uses Crypto APIs (Might try to encrypt user data)
PID:4249