Analysis

  • max time kernel
    178s
  • max time network
    182s
  • 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
    11-07-2024 22:07

General

  • Target

    4a55b500b6f19a08245fd9a06601933fdc5b7e1ab19975c0058dcc7cd58d2a4f.apk

  • Size

    1.2MB

  • MD5

    8bd2143870f954032d93cc03f6d0f75b

  • SHA1

    3f9bf9dafb037e9aba94d03e571a40953e3eb793

  • SHA256

    4a55b500b6f19a08245fd9a06601933fdc5b7e1ab19975c0058dcc7cd58d2a4f

  • SHA512

    8ce532ee02013588b1e08d03e1f2ad977f32396e4359cafb9c4afebb0f148f2cd2221ad821c1099c065ddfe8a14b5ad92fa650703c04008f4baaac579133f3cd

  • SSDEEP

    24576:poG9uMkqxybVYd6okIxt4l0kmNPF/juhKCJFxcxPo3j139dgypD1:aydgbGd6vIcl0kYF/oxcg3j139dg6

Malware Config

Extracted

Family

ermac

C2

http://89.213.56.192:3434

AES_key
AES_key

Signatures

  • Ermac

    An Android banking trojan first seen in July 2021.

  • Removes its main activity from the application launcher 1 TTPs 1 IoCs
  • Makes use of the framework's Accessibility service 4 TTPs 3 IoCs

    Retrieves information displayed on the phone screen using AccessibilityService.

  • Queries the phone number (MSISDN for GSM devices) 1 TTPs
  • 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.

  • Performs UI accessibility actions on behalf of the user 1 TTPs 7 IoCs

    Application may abuse the accessibility service to prevent their removal.

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

Processes

  • nusku.ermacv2.apk
    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).
    • 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:4216

Network

MITRE ATT&CK Mobile v15

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Downloads