ermac | 713b11c265c588265af6a051500143c81ce1bb9dca6cd27a0aec219726fd4698

Analysis

max time kernel
144s
max time network
152s
platform
android_x64
resource
android-x64-arm64-20240624-en
resource tags

androidarch:armarch:arm64arch:x64arch:x86image:android-x64-arm64-20240624-enlocale:en-usos:android-11-x64system
submitted
04-01-2025 22:03

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General

Target

713b11c265c588265af6a051500143c81ce1bb9dca6cd27a0aec219726fd4698.apk
Size

990KB
MD5

1ea9d80066f2b7cc6b16537d42b67904
SHA1

3cbf3948c316cc846b852ab23554fde30647db3a
SHA256

713b11c265c588265af6a051500143c81ce1bb9dca6cd27a0aec219726fd4698
SHA512

fa2fdb1268eac5efc93c9558ae8c2f4c2452601764588967d07168cf63cee1a587d6a440fbfc1a2f86f267947810e6902b6b09f5f693ec44a4e134192377f1c3
SSDEEP

24576:0BmJVatj8sbl/tX+BqUgXKb72zGR4yg/yGq:0BDtoSl/wqUg2+yg/k

Score

10^/10

ermac banker collection credential_access discovery evasion impact infostealer persistence stealth trojan

Malware Config

Extracted

Family

ermac

http://178.215.224.138:3434

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
4537	com.xiruvuhevofo.yusumi

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.xiruvuhevofo.yusumi
Framework service call	android.accessibilityservice.IAccessibilityServiceConnection.findAccessibilityNodeInfosByViewId	com.xiruvuhevofo.yusumi
Framework service call	android.accessibilityservice.IAccessibilityServiceConnection.findAccessibilityNodeInfosByText	com.xiruvuhevofo.yusumi

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.xiruvuhevofo.yusumi

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.xiruvuhevofo.yusumi

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.xiruvuhevofo.yusumi
android.accessibilityservice.IAccessibilityServiceConnection.performGlobalAction	com.xiruvuhevofo.yusumi
android.accessibilityservice.IAccessibilityServiceConnection.performGlobalAction	com.xiruvuhevofo.yusumi
android.accessibilityservice.IAccessibilityServiceConnection.performGlobalAction	com.xiruvuhevofo.yusumi
android.accessibilityservice.IAccessibilityServiceConnection.performGlobalAction	com.xiruvuhevofo.yusumi

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.xiruvuhevofo.yusumi

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.xiruvuhevofo.yusumi

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.xiruvuhevofo.yusumi

com.xiruvuhevofo.yusumi
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:4537