ermac | b12bc936897ec7373a4c312b0b3676008f1dc665d0807cdee8758fd7ab2b9f95

Analysis

max time kernel
82s
max time network
183s
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
16-08-2024 22:03

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General

Target

b12bc936897ec7373a4c312b0b3676008f1dc665d0807cdee8758fd7ab2b9f95.apk
Size

1012KB
MD5

fedc4034c028309656c6c92ed0577462
SHA1

88a36ccafd0fb1b233451b34808c57bb1fe599df
SHA256

b12bc936897ec7373a4c312b0b3676008f1dc665d0807cdee8758fd7ab2b9f95
SHA512

3c42dc5807d790e8104329e581e55a2b66d74e81d333b5c64a386aedb85b5f8aff2cd26a26d358045d768f62c882408ea091a0bf819e35e63315d4387fe3783a
SSDEEP

24576:tuogyc2vKW0s38ZSrfPRZwiMyNLx1ozSilkJg/ZwP0M:tu3yHB0sMZ4fPRZwovDWkJg/K0M

Score

10^/10

ermac banker collection credential_access discovery evasion impact infostealer persistence stealth trojan

Malware Config

Extracted

Family

ermac

http://40.89.179.195:3434

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 3 IoCs

stealth trojan evasion

Suppress Application Icon

T1628.001

pid	Process
4263	com.bojocaconabike.vogu
4263	com.bojocaconabike.vogu
4263	com.bojocaconabike.vogu

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.bojocaconabike.vogu
Framework service call	android.accessibilityservice.IAccessibilityServiceConnection.findAccessibilityNodeInfosByViewId	com.bojocaconabike.vogu
Framework service call	android.accessibilityservice.IAccessibilityServiceConnection.findAccessibilityNodeInfosByText	com.bojocaconabike.vogu

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.bojocaconabike.vogu

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.bojocaconabike.vogu

Performs UI accessibility actions on behalf of the user 1 TTPs 7 IoCs

Application may abuse the accessibility service to prevent their removal.

evasion

Prevent Application Removal

T1629.001

ioc	Process
android.accessibilityservice.IAccessibilityServiceConnection.performGlobalAction	com.bojocaconabike.vogu
android.accessibilityservice.IAccessibilityServiceConnection.performGlobalAction	com.bojocaconabike.vogu
android.accessibilityservice.IAccessibilityServiceConnection.performGlobalAction	com.bojocaconabike.vogu
android.accessibilityservice.IAccessibilityServiceConnection.performGlobalAction	com.bojocaconabike.vogu
android.accessibilityservice.IAccessibilityServiceConnection.performGlobalAction	com.bojocaconabike.vogu
android.accessibilityservice.IAccessibilityServiceConnection.performGlobalAction	com.bojocaconabike.vogu
android.accessibilityservice.IAccessibilityServiceConnection.performGlobalAction	com.bojocaconabike.vogu

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.bojocaconabike.vogu

Queries the unique device ID (IMEI, MEID, IMSI) 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.bojocaconabike.vogu

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.bojocaconabike.vogu

com.bojocaconabike.vogu
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:4263