General

  • Target

    ermac.apk

  • Size

    2.7MB

  • Sample

    221213-l7c8zsed62

  • MD5

    35e91deffa2d5392c8d0afa3e83db6a9

  • SHA1

    98b6acf59125ee3a37c0d4c3ab7cf6f295958f6e

  • SHA256

    3abe643e901859b9148b124a1556ab531dfe1e37fa8413500b6caddd0382307f

  • SHA512

    ea24dc840032159758708a2e43782bfbb6d56314ced043c2b75d43b32a7b486d47324242b85489354e809b858a04563e9c2557f76c69b3244b265e255dbd4ca8

  • SSDEEP

    49152:d7MG0Evk+P+OP94fBhVmLnviujng53+mmaIHYymrvk8DwslHOBF:VM6kcRPQVQbjnUOak8UsEr

Malware Config

Extracted

Family

ermac

C2

http://193.106.191.116:3434

AES_key
AES_key

Targets

    • Target

      ermac.apk

    • Size

      2.7MB

    • MD5

      35e91deffa2d5392c8d0afa3e83db6a9

    • SHA1

      98b6acf59125ee3a37c0d4c3ab7cf6f295958f6e

    • SHA256

      3abe643e901859b9148b124a1556ab531dfe1e37fa8413500b6caddd0382307f

    • SHA512

      ea24dc840032159758708a2e43782bfbb6d56314ced043c2b75d43b32a7b486d47324242b85489354e809b858a04563e9c2557f76c69b3244b265e255dbd4ca8

    • SSDEEP

      49152:d7MG0Evk+P+OP94fBhVmLnviujng53+mmaIHYymrvk8DwslHOBF:VM6kcRPQVQbjnUOak8UsEr

    • Ermac

      An Android banking trojan first seen in July 2021.

    • Ermac2 payload

    • Makes use of the framework's Accessibility service.

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

    • Removes its main activity from the application launcher

    • Acquires the wake lock.

    • Loads dropped Dex/Jar

      Runs executable file dropped to the device during analysis.

    • 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).

    • Removes a system notification.

    • Uses Crypto APIs (Might try to encrypt user data).

MITRE ATT&CK Matrix

Tasks