Analysis

  • max time kernel
    142s
  • max time network
    125s
  • platform
    windows7_x64
  • resource
    win7-20240221-en
  • resource tags

    arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
  • submitted
    24/02/2024, 03:32

General

  • Target

    2024-02-24_554364e0b8e190e973c113c8f685241a_xiaoba.exe

  • Size

    2.2MB

  • MD5

    554364e0b8e190e973c113c8f685241a

  • SHA1

    e09a20b6fccca9c5a70aa06c05e5653cc3b15210

  • SHA256

    6725dfdc478fb74bd267bda03a385cf015b21062d61cacb97637cab766389481

  • SHA512

    8b041d550b88a5b43da0b6ffe0f353daa8334a3a6d6285c9edf5f88ee6a66a4411e7f78f238b59d316c68d26a8357bed412b3993b6da19532b52e65ca4ed5d43

  • SSDEEP

    24576:BzARHYY0BU1kMzcqPKrfd2DSpytC7N1W7F+/dFbiM5LUgm1bvKrinKxPRIZG3KK3:JosU1kC3Sb7NgZi3ZtcbKrinKkTK3

Malware Config

Signatures

  • UPX dump on OEP (original entry point) 6 IoCs
  • ACProtect 1.3x - 1.4x DLL software 1 IoCs

    Detects file using ACProtect software.

  • Loads dropped DLL 1 IoCs
  • UPX packed file 4 IoCs

    Detects executables packed with UPX/modified UPX open source packer.

  • Writes to the Master Boot Record (MBR) 1 TTPs 1 IoCs

    Bootkits write to the MBR to gain persistence at a level below the operating system.

  • Drops file in System32 directory 1 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • Suspicious use of SetWindowsHookEx 6 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-02-24_554364e0b8e190e973c113c8f685241a_xiaoba.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-02-24_554364e0b8e190e973c113c8f685241a_xiaoba.exe"
    1⤵
    • Loads dropped DLL
    • Writes to the Master Boot Record (MBR)
    • Drops file in System32 directory
    • Suspicious use of SetWindowsHookEx
    PID:1660

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

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        Downloads

        • \Users\Admin\AppData\Local\Temp\jedata.dll

          Filesize

          86KB

          MD5

          114054313070472cd1a6d7d28f7c5002

          SHA1

          9a044986e6101df1a126035da7326a50c3fe9a23

          SHA256

          e15d9e1b772fed3db19e67b8d54533d1a2d46a37f8b12702a5892c6b886e9db1

          SHA512

          a2ff8481e89698dae4a1c83404105093472e384d7a3debbd7014e010543e08efc8ebb3f67c8a4ce09029e6b2a8fb7779bb402aae7c9987e61389cd8a72c73522

        • memory/1660-0-0x0000000000400000-0x0000000000628000-memory.dmp

          Filesize

          2.2MB

        • memory/1660-7-0x0000000010000000-0x000000001003E000-memory.dmp

          Filesize

          248KB

        • memory/1660-9-0x0000000010000000-0x000000001003E000-memory.dmp

          Filesize

          248KB

        • memory/1660-12-0x0000000003730000-0x0000000003740000-memory.dmp

          Filesize

          64KB

        • memory/1660-15-0x0000000010000000-0x000000001003E000-memory.dmp

          Filesize

          248KB

        • memory/1660-16-0x0000000000400000-0x0000000000628000-memory.dmp

          Filesize

          2.2MB

        • memory/1660-18-0x0000000003730000-0x0000000003740000-memory.dmp

          Filesize

          64KB