General

  • Target

    ermac.apk

  • Size

    2.8MB

  • Sample

    221213-mpyyeaed92

  • MD5

    4241a3067b87e687be063feb545fc3c2

  • SHA1

    05d7fe38dd0b7f2132a9e7e9f0cecf585debbb65

  • SHA256

    ea832ffd966341b068065875ce11cd5f3021487475947322ec8cc93af6f6f4f9

  • SHA512

    9f9719e5079562413daa2d5d06893dfac55202029c8ecd9959ba246a417b30ed031fd72d59e8929b6579aeefd9f0d20d2c5cfd932fa80f57ba70a329a597a4e6

  • SSDEEP

    49152:B7MG0EhsS++NP4feDJCSnviujng53+mmaIHYXKOdpbyHQwz356Vd:xMMs0rJXbjnUOUDbywwt6/

Malware Config

Extracted

Family

ermac

C2

http://193.106.191.116:3434

AES_key
AES_key

Targets

    • Target

      ermac.apk

    • Size

      2.8MB

    • MD5

      4241a3067b87e687be063feb545fc3c2

    • SHA1

      05d7fe38dd0b7f2132a9e7e9f0cecf585debbb65

    • SHA256

      ea832ffd966341b068065875ce11cd5f3021487475947322ec8cc93af6f6f4f9

    • SHA512

      9f9719e5079562413daa2d5d06893dfac55202029c8ecd9959ba246a417b30ed031fd72d59e8929b6579aeefd9f0d20d2c5cfd932fa80f57ba70a329a597a4e6

    • SSDEEP

      49152:B7MG0EhsS++NP4feDJCSnviujng53+mmaIHYXKOdpbyHQwz356Vd:xMMs0rJXbjnUOUDbywwt6/

    • 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