ermac | 6618ea3f8b7ee93050c777390fd93c58d608da27271a75356e4befd890a46525

Analysis

max time kernel
176s
max time network
189s
platform
android_x64
resource
android-x64-20240611.1-en
resource tags

androidarch:x64arch:x86image:android-x64-20240611.1-enlocale:en-usos:android-10-x64system
submitted
19-06-2024 22:11

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General

Target

6618ea3f8b7ee93050c777390fd93c58d608da27271a75356e4befd890a46525.apk
Size

2.5MB
MD5

b17e35fa36d81db7773a27bf333b237f
SHA1

0f2d79a84e711d148082cd75b36ae3cd124f2371
SHA256

6618ea3f8b7ee93050c777390fd93c58d608da27271a75356e4befd890a46525
SHA512

b54d1b267b294be458d34edd181e487f3e0dc966d16ce42ca9cd855ac163f2aa2deb0b4b782a706b4c7081e5e294c4379a0ab00a3b3ef9f96fcdc041d7b532cc
SSDEEP

49152:C8/fOPaVF9YcLqBnM8ulVnSakdaMRQdBC9uSspyyIUMiRaNg/yW7:C8/2Ef8uHzkR1uX3IviAW7

Score

10^/10

ermac banker collection credential_access discovery evasion impact infostealer persistence stealth trojan

Malware Config

Extracted

Family

ermac

http://sollyzo.duckdns.org: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
5048	com.xelinixetohigo.kisinu

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.xelinixetohigo.kisinu
Framework service call	android.accessibilityservice.IAccessibilityServiceConnection.findAccessibilityNodeInfosByViewId	com.xelinixetohigo.kisinu
Framework service call	android.accessibilityservice.IAccessibilityServiceConnection.findAccessibilityNodeInfosByText	com.xelinixetohigo.kisinu

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.xelinixetohigo.kisinu

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.xelinixetohigo.kisinu

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.xelinixetohigo.kisinu
android.accessibilityservice.IAccessibilityServiceConnection.performGlobalAction	com.xelinixetohigo.kisinu
android.accessibilityservice.IAccessibilityServiceConnection.performGlobalAction	com.xelinixetohigo.kisinu
android.accessibilityservice.IAccessibilityServiceConnection.performGlobalAction	com.xelinixetohigo.kisinu
android.accessibilityservice.IAccessibilityServiceConnection.performGlobalAction	com.xelinixetohigo.kisinu
android.accessibilityservice.IAccessibilityServiceConnection.performGlobalAction	com.xelinixetohigo.kisinu
android.accessibilityservice.IAccessibilityServiceConnection.performGlobalAction	com.xelinixetohigo.kisinu

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.xelinixetohigo.kisinu

Queries the unique device ID (IMEI, MEID, IMSI) 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.xelinixetohigo.kisinu

com.xelinixetohigo.kisinu
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:5048