General

  • Target

    9a35c305a9acaeeb5fafded8eb87e4b17091cf8a9cc95312e6c8d055bc2a8be3.bin

  • Size

    2.1MB

  • Sample

    250105-1xfnpazjhj

  • MD5

    f3caaadbbd007edc71b0f04a3bad0dad

  • SHA1

    1b30f3ed5aac994d10285fbcd26be50b8b7b20cd

  • SHA256

    9a35c305a9acaeeb5fafded8eb87e4b17091cf8a9cc95312e6c8d055bc2a8be3

  • SHA512

    a36d0b3c03d647f37c3d8537afc957df52ac4a7265414561ef6f086caf16d271f80e3d483ecc233ab96b05d2218a2cba5419b8a4bb3b98cb56c48c0e8cb2a561

  • SSDEEP

    49152:wgS3eyrj+gBbDZgPTGhUIJlAG/6KPGRo438U7XIijUyF:aj+aHZQGhUIJlAG/6q4MXEUyF

Malware Config

Extracted

Family

ermac

C2

http://154.216.20.225:3434

rsa_pubkey
AES_key
AES_key

Targets

    • Target

      9a35c305a9acaeeb5fafded8eb87e4b17091cf8a9cc95312e6c8d055bc2a8be3.bin

    • Size

      2.1MB

    • MD5

      f3caaadbbd007edc71b0f04a3bad0dad

    • SHA1

      1b30f3ed5aac994d10285fbcd26be50b8b7b20cd

    • SHA256

      9a35c305a9acaeeb5fafded8eb87e4b17091cf8a9cc95312e6c8d055bc2a8be3

    • SHA512

      a36d0b3c03d647f37c3d8537afc957df52ac4a7265414561ef6f086caf16d271f80e3d483ecc233ab96b05d2218a2cba5419b8a4bb3b98cb56c48c0e8cb2a561

    • SSDEEP

      49152:wgS3eyrj+gBbDZgPTGhUIJlAG/6KPGRo438U7XIijUyF:aj+aHZQGhUIJlAG/6q4MXEUyF

    • Ermac

      An Android banking trojan first seen in July 2021.

    • Ermac family

    • Removes its main activity from the application launcher

    • Makes use of the framework's Accessibility service

      Retrieves information displayed on the phone screen using AccessibilityService.

    • Obtains sensitive information copied to the device clipboard

      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)

    • Queries the phone number (MSISDN for GSM devices)

    • Acquires the wake lock

    • Makes use of the framework's foreground persistence service

      Application may abuse the framework's foreground service to continue running in the foreground.

    • Performs UI accessibility actions on behalf of the user

      Application may abuse the accessibility service to prevent their removal.

    • Queries the mobile country code (MCC)

    • Queries the unique device ID (IMEI, MEID, IMSI)

    • Reads information about phone network operator.

    • Requests disabling of battery optimizations (often used to enable hiding in the background).

MITRE ATT&CK Mobile v15

Tasks