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General

  • Target

    ermac.apk

  • Size

    2.8MB

  • Sample

    221213-mq39hshb7v

  • MD5

    72b3faff0779e1ddaef3a317fbefa29c

  • SHA1

    6af79ef669a9250ae2599348f103f772817c88a2

  • SHA256

    4ccf02c87de6c0bf718d9f8cdf6c61a9edc909fab1cdd7d497572e30fea1f580

  • SHA512

    6a288603b55685d7ce6573ed632f3497f339e7e71e405c9d1fb8dee11a58731bcbbcc137ac3320ee4e88055ee285a5a870f3ebc8258f101bcd83de19ce9543d6

  • SSDEEP

    49152:O7MG0EqP3bAU5vB4f/VBiEZEuAI12iQ24Xnviujng53+mmaIHYu6O+c9:+MHP3bvBmBZZEfIAiQ2ebjnUOZ+g

Malware Config

Extracted

Family

ermac

C2

http://193.106.191.116:3434

AES_key
AES_key

Targets

    • Target

      ermac.apk

    • Size

      2.8MB

    • MD5

      72b3faff0779e1ddaef3a317fbefa29c

    • SHA1

      6af79ef669a9250ae2599348f103f772817c88a2

    • SHA256

      4ccf02c87de6c0bf718d9f8cdf6c61a9edc909fab1cdd7d497572e30fea1f580

    • SHA512

      6a288603b55685d7ce6573ed632f3497f339e7e71e405c9d1fb8dee11a58731bcbbcc137ac3320ee4e88055ee285a5a870f3ebc8258f101bcd83de19ce9543d6

    • SSDEEP

      49152:O7MG0EqP3bAU5vB4f/VBiEZEuAI12iQ24Xnviujng53+mmaIHYu6O+c9:+MHP3bvBmBZZEfIAiQ2ebjnUOZ+g

    • 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