General

  • Target

    5-aligned-signed_en.apk

  • Size

    3.8MB

  • Sample

    241005-ybvvdavgmb

  • MD5

    239e33c64d322f85cc05cc2d2a5234f4

  • SHA1

    223efb835a820ad6bd4611b9eba3e9eb0d159736

  • SHA256

    dfc6b7f14b14efcb7914cc06638de4fc6807b46d0cd5c6e1ad48e6dc247da0c7

  • SHA512

    7ce21abdeaf7d81f0731dc8478ef6260b8ef9f74c4e0a31733a1102ce35aef32d44c48e22192a644aa8ca856e7d2e3081fb96eccdb632dd9a26d2bf07f3e8a85

  • SSDEEP

    98304:k20r2QFjrI1AuY/QtkxjC4Niw1Jo75ckB4E7EmbER5tH7:kPrxRydtkXSZ4E9bE9

Malware Config

Extracted

Family

ermac

C2

http://176.111.174.221:3434

AES_key
AES_key

Targets

    • Target

      5-aligned-signed_en.apk

    • Size

      3.8MB

    • MD5

      239e33c64d322f85cc05cc2d2a5234f4

    • SHA1

      223efb835a820ad6bd4611b9eba3e9eb0d159736

    • SHA256

      dfc6b7f14b14efcb7914cc06638de4fc6807b46d0cd5c6e1ad48e6dc247da0c7

    • SHA512

      7ce21abdeaf7d81f0731dc8478ef6260b8ef9f74c4e0a31733a1102ce35aef32d44c48e22192a644aa8ca856e7d2e3081fb96eccdb632dd9a26d2bf07f3e8a85

    • SSDEEP

      98304:k20r2QFjrI1AuY/QtkxjC4Niw1Jo75ckB4E7EmbER5tH7:kPrxRydtkXSZ4E9bE9

    • Ermac

      An Android banking trojan first seen in July 2021.

    • Ermac2 payload

    • Removes its main activity from the application launcher

    • Loads dropped Dex/Jar

      Runs executable file dropped to the device during analysis.

    • Makes use of the framework's Accessibility service

      Retrieves information displayed on the phone screen using AccessibilityService.

    • 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)

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

MITRE ATT&CK Mobile v15

Tasks