ermac | 8c321ba5108cd655420d2f9f1131629410beaffded8aa7c104357c07d8d6c57a

Analysis

max time kernel
147s
max time network
157s
platform
android_x64
resource
android-x64-20240221-en
resource tags

androidarch:x64arch:x86image:android-x64-20240221-enlocale:en-usos:android-10-x64system
submitted
25-02-2024 22:01

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General

Target

8c321ba5108cd655420d2f9f1131629410beaffded8aa7c104357c07d8d6c57a.apk
Size

1.0MB
MD5

aeae1f67dff8477ff0c4776af92140f2
SHA1

9a505433dd72a80abcc2c6f600c08280b170e656
SHA256

8c321ba5108cd655420d2f9f1131629410beaffded8aa7c104357c07d8d6c57a
SHA512

3701c809496c17954dfef2705c563d5ff5d7b1648ba870928099746664a8c8a4576640d58215902ff3a84cd8ac7487a757840ff5b8c4210ce48100d519d8d90c
SSDEEP

24576:kS9yYo6onqmlIJ2GmSiGW2NDZrZzl3U2ha0GIzHPu:kCRnm6HvBzZpl3U2h1RPu

Score

10^/10

ermac banker collection discovery evasion infostealer stealth trojan

Malware Config

Extracted

Family

ermac

http://172.214.90.35:3434

AES_key

Signatures

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

Ermac2 payload 1 IoCs

resource	yara_rule
behavioral2/files/fstream-1.dat	family_ermac2

Makes use of the framework's Accessibility service 2 TTPs 3 IoCs

Retrieves information displayed on the phone screen using AccessibilityService.

collection evasion

Input Injection

T1516

Screen Capture

T1513

description	ioc	Process
Framework service call	android.accessibilityservice.IAccessibilityServiceConnection.findAccessibilityNodeInfoByAccessibilityId	com.vunuxogawenezuzo.judano
Framework service call	android.accessibilityservice.IAccessibilityServiceConnection.findAccessibilityNodeInfosByViewId	com.vunuxogawenezuzo.judano
Framework service call	android.accessibilityservice.IAccessibilityServiceConnection.findAccessibilityNodeInfosByText	com.vunuxogawenezuzo.judano

Removes its main activity from the application launcher 1 IoCs

stealth trojan

pid	Process
5034	com.vunuxogawenezuzo.judano

Loads dropped Dex/Jar 2 IoCs

Runs executable file dropped to the device during analysis.

ioc	pid	Process
/data/user/0/com.vunuxogawenezuzo.judano/app_ded/1ohnWGe7b53FaUMqq1p5MOkPjx7knDxk.dex	5034	com.vunuxogawenezuzo.judano
/data/user/0/com.vunuxogawenezuzo.judano/app_ded/1ohnWGe7b53FaUMqq1p5MOkPjx7knDxk.dex	5034	com.vunuxogawenezuzo.judano

Acquires the wake lock 1 IoCs

description	ioc	Process
Framework service call	android.os.IPowerManager.acquireWakeLock	com.vunuxogawenezuzo.judano

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 IoCs

description	ioc	Process
Framework API call	javax.crypto.Cipher.doFinal	com.vunuxogawenezuzo.judano

com.vunuxogawenezuzo.judano
1⤵
- Makes use of the framework's Accessibility service
- Removes its main activity from the application launcher
- Loads dropped Dex/Jar
- Acquires the wake lock
- Uses Crypto APIs (Might try to encrypt user data)
PID:5034

Network

MITRE ATT&CK Mobile v15

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Input Injection

T1516

Credential Access

Discovery

System Network Configuration Discovery

T1422

Lateral Movement

Collection

Screen Capture

T1513

Command and Control

Exfiltration

Impact

Input Injection

T1516

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Downloads

/data/data/com.vunuxogawenezuzo.judano/app_ded/1ohnWGe7b53FaUMqq1p5MOkPjx7knDxk.dex

Filesize
885KB

MD5
e91c3492d81fb788320ff572b3ea2044

SHA1
313d826c033634b0cac663e51c98079528a9d984

SHA256
507d8bb6706321988beafb6b4f01ed6d386bc4fe14a61a6b847bb1a35bf2fff5

SHA512
2fc0bac99d9454bd063bb6253c29537a7c3ca07e840b209981f6f10bdec35c7fa8b66f9c7c6892d5cf8d941ed3e39747be806e1b1110485f85b289aad72cf3e4

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Analysis

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General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Mobile v15

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Downloads