Analysis

  • max time kernel
    148s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240508-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
  • submitted
    27/05/2024, 18:30

General

  • Target

    2024-05-27_5411364013c3ec712d5d743586e3c42b_cryptolocker.exe

  • Size

    48KB

  • MD5

    5411364013c3ec712d5d743586e3c42b

  • SHA1

    a17ce54ef5a62c0fa70ff5199f991f6adec963f1

  • SHA256

    830b6d46bc5f26c71ca94ba90b9550a2aa6ebf247437399fa0674148f1e68686

  • SHA512

    c0868b831828a00719a5fe814450afe09834086a562206626a1aebd09b82b7e218e53823d7f83f88be934aa6254c8a47dfcec558db559714c5a08a250e3ef8cd

  • SSDEEP

    768:vQz7yVEhs9+js1SQtOOtEvwDpjz9+4/Uth8igNrr42A7n0FmB0n8:vj+jsMQMOtEvwDpj5HczerLO04B/

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\2024-05-27_5411364013c3ec712d5d743586e3c42b_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-05-27_5411364013c3ec712d5d743586e3c42b_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:8
    • 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:4064

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

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        Downloads

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

          Filesize

          49KB

          MD5

          eceb7e1b73c49b9e4aa9419381c5e613

          SHA1

          d230b7f8f26f747b0f23a943092891ec28997c3f

          SHA256

          79f157fcea97dab7a08cb625ffb350c55c423181e7d03ba6365a42d99056341e

          SHA512

          b41d0bf0c318ffa7784212a39f800c3e4f874c39aca449350b84eab1b124a6fc43493cd349a229fe09b848372188cff93b7a8e344d5ac705893f62004f123cc5

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

          Filesize

          315B

          MD5

          a34ac19f4afae63adc5d2f7bc970c07f

          SHA1

          a82190fc530c265aa40a045c21770d967f4767b8

          SHA256

          d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

          SHA512

          42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

        • memory/8-1-0x00000000004F0000-0x00000000004F6000-memory.dmp

          Filesize

          24KB

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

          Filesize

          24KB

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

          Filesize

          24KB