Analysis

  • max time kernel
    149s
  • max time network
    155s
  • platform
    android_x86
  • resource
    android-x86-arm-20231215-en
  • resource tags

    androidarch:armarch:x86image:android-x86-arm-20231215-enlocale:en-usos:android-9-x86system
  • submitted
    15-02-2024 22:01

General

  • Target

    f3268bde4497dfc3ddf1102373187bed157bd09acf8942783fa8b0b15a97b5b7.apk

  • Size

    1.3MB

  • MD5

    ea335cfb06458bc13d6ac33d5ca676cb

  • SHA1

    7b477b6eefd0392a887a4f83e508def7202b603c

  • SHA256

    f3268bde4497dfc3ddf1102373187bed157bd09acf8942783fa8b0b15a97b5b7

  • SHA512

    3b5ae2666e15ce773a505eb66958efcf7d8b6bc4e05cac5bc84a1e8acf19ffd75774d16b644963ceab52ba0045e7d0f85f670c96fa88c167313fd200c389a120

  • SSDEEP

    24576:TaYGLtDwVXoC0ezwGnc8Sa0i06mXa/LkwZC8df:+DLJwVXmkP06mXa/LkwZC8R

Malware Config

Extracted

Family

ermac

C2

http://77.105.132.7:3434

AES_key
AES_key

Signatures

  • Ermac

    An Android banking trojan first seen in July 2021.

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

    Retrieves information displayed on the phone screen using AccessibilityService.

  • Removes its main activity from the application launcher 1 IoCs
  • Acquires the wake lock 1 IoCs
  • Requests disabling of battery optimizations (often used to enable hiding in the background). 1 IoCs
  • Uses Crypto APIs (Might try to encrypt user data) 1 IoCs

Processes

  • nusku.OxoChat.apk
    1⤵
    • Makes use of the framework's Accessibility service
    • Removes its main activity from the application launcher
    • Acquires the wake lock
    • Requests disabling of battery optimizations (often used to enable hiding in the background).
    • Uses Crypto APIs (Might try to encrypt user data)
    PID:4253

Network

MITRE ATT&CK Matrix

Replay Monitor

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Downloads