Overview

overview

10

Static

static

6

31ee863aed...a0.apk

android-9-x86

10

31ee863aed...a0.apk

android-10-x64

10

31ee863aed...a0.apk

android-11-x64

10

Analysis

  • max time kernel
    149s
  • max time network
    152s
  • 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
    06-12-2024 22:03

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General

  • Target

    31ee863aed7dcda18cf0f88faa562433fd60693507d086f5a87b01b27c883ca0.apk

  • Size

    961KB

  • MD5

    4b8f84e42ca21b0edd5b23636e264852

  • SHA1

    bda306ce2bf7986f5948ae570971c32d7ca4287a

  • SHA256

    31ee863aed7dcda18cf0f88faa562433fd60693507d086f5a87b01b27c883ca0

  • SHA512

    3d8d3b996ff41dc1110f55077f57bd3281564fe7eea839be8aade08eed6803939bcc77d954e235b78d0b45eda791e25532e921ac781b5a6298fd7b6c413a2491

  • SSDEEP

    24576:UgmtKaQ+PbJAHx7ao0LzY0ky/UBC6B9d6PxYwqtaJyL5:Ugm00Lqy/UsmADqtGyL5

Score
10/10
ermacbankercollectioncredential_accessdiscoveryevasionimpactinfostealerpersistencestealthtrojan

Malware Config

Extracted

Family

ermac

C2

http://91.202.233.10:3434

AES_key
AES_key

Signatures

  • Ermac

    An Android banking trojan first seen in July 2021.

    bankertrojaninfostealerermac
  • Ermac family
    ermac
  • Ermac2 payload 2 IoCs
  • Removes its main activity from the application launcher 1 TTPs 1 IoCs
    stealthtrojanevasion
  • Loads dropped Dex/Jar 1 TTPs 3 IoCs

    Runs executable file dropped to the device during analysis.

    evasion
  • Makes use of the framework's Accessibility service 4 TTPs 3 IoCs

    Retrieves information displayed on the phone screen using AccessibilityService.

    collectionevasioncredential_access
  • Queries a list of all the installed applications on the device (Might be used in an attempt to overlay legitimate apps) 1 TTPs
    bankerdiscovery
  • Queries the phone number (MSISDN for GSM devices) 1 TTPs
    discovery
  • Acquires the wake lock 1 IoCs
  • 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.

    evasionpersistence
  • Performs UI accessibility actions on behalf of the user 1 TTPs 19 IoCs

    Application may abuse the accessibility service to prevent their removal.

    evasion
  • Queries the mobile country code (MCC) 1 TTPs 1 IoCs
    discovery
  • Queries the unique device ID (IMEI, MEID, IMSI) 1 TTPs
    discovery
  • Requests disabling of battery optimizations (often used to enable hiding in the background). 1 TTPs 1 IoCs
    evasion
  • Registers a broadcast receiver at runtime (usually for listening for system events) 1 TTPs 1 IoCs
    persistence
  • Uses Crypto APIs (Might try to encrypt user data) 1 TTPs 1 IoCs
    impact
  • Checks CPU information 2 TTPs 1 IoCs
  • Checks memory information 2 TTPs 1 IoCs

Processes

  • com.Owhhejzhsk.apk
    1⤵
    • Removes its main activity from the application launcher
    • Loads dropped Dex/Jar
    • 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:4221
    • /system/bin/dex2oat --instruction-set=x86 --instruction-set-features=ssse3,-sse4.1,-sse4.2,-avx,-avx2,-popcnt --runtime-arg -Xhidden-api-checks --runtime-arg -Xrelocate --boot-image=/system/framework/boot.art --runtime-arg -Xms64m --runtime-arg -Xmx512m --instruction-set-variant=x86 --instruction-set-features=default --inline-max-code-units=0 --compact-dex-level=none --dex-file=/data/user/0/com.Owhhejzhsk.apk/app_apkprotector_dex/classes-v1.bin --output-vdex-fd=41 --oat-fd=42 --oat-location=/data/user/0/com.Owhhejzhsk.apk/app_apkprotector_dex/oat/x86/classes-v1.odex --compiler-filter=quicken --class-loader-context=&
      2⤵
      • Loads dropped Dex/Jar
      PID:4247

Network

MITRE ATT&CK Mobile v15

Initial Access

Execution

Persistence

Event Triggered Execution

1
T1624

Broadcast Receivers

1
T1624.001

Foreground Persistence

1
T1541

Privilege Escalation

Defense Evasion

Download New Code at Runtime

1
T1407

Foreground Persistence

1
T1541

Hide Artifacts

2
T1628

Suppress Application Icon

1
T1628.001

User Evasion

1
T1628.002

Impair Defenses

1
T1629

Prevent Application Removal

1
T1629.001

Input Injection

1
T1516

Virtualization/Sandbox Evasion

2
T1633

System Checks

2
T1633.001

Credential Access

Input Capture

2
T1417

GUI Input Capture

1
T1417.002

Keylogging

1
T1417.001

Discovery

Software Discovery

1
T1418

Security Software Discovery

1
T1418.001

System Information Discovery

2
T1426

System Network Configuration Discovery

3
T1422

Lateral Movement

Collection

Input Capture

2
T1417

GUI Input Capture

1
T1417.002

Keylogging

1
T1417.001

Screen Capture

1
T1513

Command and Control

Exfiltration

Impact

Data Encrypted for Impact

1
T1471

Input Injection

1
T1516

Replay Monitor

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Downloads

  • /data/data/com.Owhhejzhsk.apk/app_apkprotector_dex/classes-v1.bin
    Filesize

    547KB

    MD5

    b1e00b79a8eef2bad76ce8c92f5d0bfd

    SHA1

    52ade098b14886f9c7b94b08f8c9b1d43a3e46a3

    SHA256

    1649075d485d1b46259dce1640d31a7e5a50f0c06ba3e3765cfe265a01249d01

    SHA512

    812112bf15222190a46e9a6807a91e19b8168c5b447607a9e9a5627db7ceb656f20e009616526f4326f36b83a247f4f1a998bd2fbd670c76b67df1bac47385c1

    Download Submit

  • /data/user/0/com.Owhhejzhsk.apk/app_apkprotector_dex/classes-v1.bin
    Filesize

    547KB

    MD5

    481c6e57e6223fba004dfbeae7f470f0

    SHA1

    0326d3e689cbb0099a78213babfc0b9d9eb40781

    SHA256

    e71f3c8bfe30cbf34135202521be851b3824eedf34fbace6d67ec08444c8d6e0

    SHA512

    b748f609937cd3eac171a29d66ba16dad209cf08125c26923e210a62ee3042e9a5f2aa09881cdcb0c9b892e056369b878c6d9539126aaef5d907b6623c7215bc

    Download Submit