Analysis

  • max time kernel
    30s
  • max time network
    153s
  • platform
    android_x64
  • resource
    android-x64-20240624-en
  • resource tags

    androidarch:x64arch:x86image:android-x64-20240624-enlocale:en-usos:android-10-x64system
  • submitted
    04-11-2024 14:41

General

  • Target

    5c8b8b4c8891dc210cec633a1a57ed28ec654ebb186d9fc3da315c768b82744f.apk

  • Size

    958KB

  • MD5

    46d6498acfb25f92b2f3324bd1a6b7f6

  • SHA1

    3630a1e1e819afbeabf432c813c33a214bf6f260

  • SHA256

    5c8b8b4c8891dc210cec633a1a57ed28ec654ebb186d9fc3da315c768b82744f

  • SHA512

    54d88c69af759a9f3ca37c8ce879bb6dd02470a725a86264d5559071d3d91327f6d09885c7cf8372e460f82e1c385d7467d274d2efdce16874bc281971362271

  • SSDEEP

    24576:2AHLNoRNZM8lAlQbcDeoPP8woZFfVyZVUQP+:2AHkovV833T

Malware Config

Extracted

Family

ermac

C2

http://154.216.18.138:3434

AES_key
AES_key

Signatures

  • Ermac

    An Android banking trojan first seen in July 2021.

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

    Runs executable file dropped to the device during analysis.

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

    Retrieves information displayed on the phone screen using AccessibilityService.

  • Obtains sensitive information copied to the device clipboard 2 TTPs 1 IoCs

    Application may abuse the framework's APIs to obtain sensitive information copied to the device clipboard.

  • Queries a list of all the installed applications on the device (Might be used in an attempt to overlay legitimate apps) 1 TTPs
  • 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 13 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
  • 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

  • chrome008822.apk
    1⤵
    • Removes its main activity from the application launcher
    • Loads dropped Dex/Jar
    • Makes use of the framework's Accessibility service
    • Obtains sensitive information copied to the device clipboard
    • 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)
    • 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:4966

Network

MITRE ATT&CK Mobile v15

Replay Monitor

Loading Replay Monitor...

Downloads

  • /data/data/chrome008822.apk/app_apkprotector_dex/classes-v1.bin

    Filesize

    686KB

    MD5

    5d03d0239963f0e37abdd80ec86c0998

    SHA1

    3cef61e3bbf27a28b7f02fab1e511c599748e339

    SHA256

    af9fb6074ce4ed5ece18f65bef2dec6f5b4cdedd01eb6bb80e9ba5d7443f1993

    SHA512

    e6727e166053950fb1ed1427d56ce72076fd171a2b3979e7459b17d8843dadfea0925f05f36e3924507895b99c00b18408c91f16207072b6fceddb1e0a5011d5