Resubmissions

07-08-2023 04:30

230807-e5bttaeh2w 10

04-08-2023 13:49

230804-q4wy5sbb43 10

08-03-2023 22:25

230308-2ca35sgd5w 10

General

  • Target

    sakinacmaermacapk.apk

  • Size

    2.9MB

  • Sample

    230308-2ca35sgd5w

  • MD5

    59c1dfcf5cc3b76c961fe08f163dbb02

  • SHA1

    12d002783acc1fe8573abf8f07e7fc79d2769f27

  • SHA256

    33b7572766cef039979714d229ff2076cd5c979e22a11891ef6fc4baaac0e0fc

  • SHA512

    38639d0029410c6af04c15e53a37d4c7e8e572cf8fae4c97ee347885615c30d65825d85f7c71149d6bc9bee8db5c12048695cf59b91f1e6241568d69384b0184

  • SSDEEP

    49152:Fun4FKKpN0DAb3KBoNEzcnxmnHy99J9N1OG8Ps9KL4fED3AfnkIPBNLEO4ZT5Noq:FCelAAnxc49D/B5qD3AfBLn4ZTcyN

Malware Config

Extracted

Family

ermac

C2

http://31.41.244.187:3434

AES_key
AES_key

Targets

    • Target

      sakinacmaermacapk.apk

    • Size

      2.9MB

    • MD5

      59c1dfcf5cc3b76c961fe08f163dbb02

    • SHA1

      12d002783acc1fe8573abf8f07e7fc79d2769f27

    • SHA256

      33b7572766cef039979714d229ff2076cd5c979e22a11891ef6fc4baaac0e0fc

    • SHA512

      38639d0029410c6af04c15e53a37d4c7e8e572cf8fae4c97ee347885615c30d65825d85f7c71149d6bc9bee8db5c12048695cf59b91f1e6241568d69384b0184

    • SSDEEP

      49152:Fun4FKKpN0DAb3KBoNEzcnxmnHy99J9N1OG8Ps9KL4fED3AfnkIPBNLEO4ZT5Noq:FCelAAnxc49D/B5qD3AfBLn4ZTcyN

    • 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