ermac | 983657d206e2f1cbb41368e0268b9db393a4b60d6a2c89c08f7a6c77d2c9265b

Analysis

max time kernel
147s
max time network
149s
platform
android-9_x86
resource
android-x86-arm-20240910-en
resource tags

arch:armarch:x86image:android-x86-arm-20240910-enlocale:en-usos:android-9-x86system
submitted
26-10-2024 22:03

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General

Target

983657d206e2f1cbb41368e0268b9db393a4b60d6a2c89c08f7a6c77d2c9265b.apk
Size

904KB
MD5

0b165e73851daa70de19a651ce03fde9
SHA1

b9a16242b3fdc219979fd7861a011a6abc6ca7d5
SHA256

983657d206e2f1cbb41368e0268b9db393a4b60d6a2c89c08f7a6c77d2c9265b
SHA512

35816343a7157dc67a9349aeb5a248431ef2e8193004d0a271aacdcfe1e218bb737fca922923c893f42af27938adbea4084eed631cf221ab2ca03d8feb9c85df
SSDEEP

12288:BgA4qD+th5nOKrmqp6zMZygVoEFZ6bmo6jKNrrRaiGDqOo081yf0BgGOani9L4r:Bg/FT5OhmQMmr1YxDLZ8E0BDfi9L4r

Score

10^/10

ermac banker collection credential_access discovery evasion impact infostealer persistence stealth trojan

Malware Config

Extracted

Family

ermac

http://45.149.241.240:3434

AES_key

Signatures

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

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

stealth trojan evasion

Suppress Application Icon

T1628.001

pid	Process
4348	com.tupafatopabe.rurabezo

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.tupafatopabe.rurabezo
Framework service call	android.accessibilityservice.IAccessibilityServiceConnection.findAccessibilityNodeInfosByViewId	com.tupafatopabe.rurabezo
Framework service call	android.accessibilityservice.IAccessibilityServiceConnection.findAccessibilityNodeInfosByText	com.tupafatopabe.rurabezo

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.tupafatopabe.rurabezo

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.tupafatopabe.rurabezo

Performs UI accessibility actions on behalf of the user 1 TTPs 5 IoCs

Application may abuse the accessibility service to prevent their removal.

evasion

Prevent Application Removal

T1629.001

ioc	Process
android.accessibilityservice.IAccessibilityServiceConnection.performGlobalAction	com.tupafatopabe.rurabezo
android.accessibilityservice.IAccessibilityServiceConnection.performGlobalAction	com.tupafatopabe.rurabezo
android.accessibilityservice.IAccessibilityServiceConnection.performGlobalAction	com.tupafatopabe.rurabezo
android.accessibilityservice.IAccessibilityServiceConnection.performGlobalAction	com.tupafatopabe.rurabezo
android.accessibilityservice.IAccessibilityServiceConnection.performGlobalAction	com.tupafatopabe.rurabezo

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.tupafatopabe.rurabezo

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.tupafatopabe.rurabezo

Registers a broadcast receiver at runtime (usually for listening for system events) 1 TTPs 1 IoCs

persistence

Broadcast Receivers

T1624.001

description	ioc	Process
Framework service call	android.app.IActivityManager.registerReceiver	com.tupafatopabe.rurabezo

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.tupafatopabe.rurabezo

Checks CPU information 2 TTPs 1 IoCs

System Checks

T1633.001

System Information Discovery

T1426

description	ioc	Process
File opened for read	/proc/cpuinfo	com.tupafatopabe.rurabezo

Checks memory information 2 TTPs 1 IoCs

System Checks

T1633.001

System Information Discovery

T1426

description	ioc	Process
File opened for read	/proc/meminfo	com.tupafatopabe.rurabezo

com.tupafatopabe.rurabezo
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).
- Registers a broadcast receiver at runtime (usually for listening for system events)
- Uses Crypto APIs (Might try to encrypt user data)
- Checks CPU information
- Checks memory information
PID:4348