Analysis

  • max time kernel
    149s
  • max time network
    151s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240426-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
  • submitted
    30/05/2024, 21:08

General

  • Target

    2024-05-30_4c876ba3a720c6a79744775c40c82d2b_cryptolocker.exe

  • Size

    71KB

  • MD5

    4c876ba3a720c6a79744775c40c82d2b

  • SHA1

    b7091264ebcb89b236a691bb74022d8b7daba3fd

  • SHA256

    4e7ad3d46958d1ebd19bc9e9f996779bde43836f1b8e1f1b687d84306afe227e

  • SHA512

    2a69e6d21eaac9084cf634645f77ff64bc2e7eaf0f74357baacf001290237dfe6312a90521ef622a6fc9c796f6304a69c09f421df365a98f1bfbfd6db7113458

  • SSDEEP

    768:vQz7yVEhs9+js1SQtOOtEvwDpjz9+4ZPsED3VK2+ZtyOjgO4r9vFAg2rq2g1B/RD:vj+jsMQMOtEvwDpj5HZYTjipvF247

Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 1 IoCs
  • Detection of Cryptolocker Samples 1 IoCs
  • Checks computer location settings 2 TTPs 2 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Executes dropped EXE 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Modifies system certificate store 2 TTPs 8 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-05-30_4c876ba3a720c6a79744775c40c82d2b_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-05-30_4c876ba3a720c6a79744775c40c82d2b_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:4644
    • C:\Users\Admin\AppData\Local\Temp\misid.exe
      "C:\Users\Admin\AppData\Local\Temp\misid.exe"
      2⤵
      • Checks computer location settings
      • Executes dropped EXE
      • Modifies system certificate store
      PID:5244

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

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        Downloads

        • C:\Users\Admin\AppData\Local\Temp\misid.exe

          Filesize

          71KB

          MD5

          1609c1479e657be7abde436a226d5640

          SHA1

          b923269aa54c3d9a492dcc3fc2b3093cb32bdf7e

          SHA256

          f35b5e7ebbe67610f7085d36d2ad51f87cf06349b81ecc10b6b6a9c77e4adc50

          SHA512

          5ddb071cdcd53aadb2011364f31dcf7e8b6c24e19647c049f0604b66adc2e60b891b58ae9fc848ecceb11ba491f6eb4b9593160f2401ac479ba0ac5dbf26812e

        • C:\Users\Admin\AppData\Local\Temp\misids.exe

          Filesize

          315B

          MD5

          a34ac19f4afae63adc5d2f7bc970c07f

          SHA1

          a82190fc530c265aa40a045c21770d967f4767b8

          SHA256

          d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

          SHA512

          42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

        • memory/4644-0-0x00000000004D0000-0x00000000004D6000-memory.dmp

          Filesize

          24KB

        • memory/4644-1-0x00000000005E0000-0x00000000005E6000-memory.dmp

          Filesize

          24KB

        • memory/4644-8-0x00000000004D0000-0x00000000004D6000-memory.dmp

          Filesize

          24KB

        • memory/5244-17-0x00000000004F0000-0x00000000004F6000-memory.dmp

          Filesize

          24KB