Analysis

  • max time kernel
    150s
  • max time network
    157s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240226-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
  • submitted
    19/03/2024, 16:51

General

  • Target

    2024-03-19_b0e3b2fc4cff0adbcf57e9136fdd27f1_cryptolocker.exe

  • Size

    60KB

  • MD5

    b0e3b2fc4cff0adbcf57e9136fdd27f1

  • SHA1

    63ab7574d76da320bdae388b542d1281af5e29f1

  • SHA256

    087ae20a6b5b1cfc4a103469391db5cbaa6915bff7629b1067a004c87bb94606

  • SHA512

    27e8a11365da523990af273b8706bb0ecd7a2dc3a0f3f3874d8e2a754f624e103c76a21ba7c69a563142b7a1a403f78f8929c314e0144dbdc001e682d67eecdf

  • SSDEEP

    768:vQz7yVEhs9+js1SQtOOtEvwDpjz9+4hdCY8EQMjpi/Wpi3B3URiLnuoUwUsfqB1D:vj+jsMQMOtEvwDpj5Hy7B3gG8xzUIN

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\2024-03-19_b0e3b2fc4cff0adbcf57e9136fdd27f1_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-03-19_b0e3b2fc4cff0adbcf57e9136fdd27f1_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:3748
    • 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:3640

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

        Loading Replay Monitor...

        Downloads

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

          Filesize

          60KB

          MD5

          e70bd481397b5d1f503d680e654a3030

          SHA1

          7f37c8666022b313dc08c864dea8b5b3de910900

          SHA256

          07ff804b6c517d053fa27dddf488f634b801976e40acb85cf8fec6dc7e297d88

          SHA512

          ead63586380b92eeed93467c595be8c1336cac14e12d015660b3970a9889e5116bae11b5f85e5dfb7764e48d7a4b37be7510728aecfe211b9577b0fc462bf79b

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

          Filesize

          315B

          MD5

          a34ac19f4afae63adc5d2f7bc970c07f

          SHA1

          a82190fc530c265aa40a045c21770d967f4767b8

          SHA256

          d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

          SHA512

          42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

        • memory/3640-17-0x00000000020E0000-0x00000000020E6000-memory.dmp

          Filesize

          24KB

        • memory/3640-21-0x00000000021E0000-0x00000000021E6000-memory.dmp

          Filesize

          24KB

        • memory/3748-0-0x00000000004F0000-0x00000000004F6000-memory.dmp

          Filesize

          24KB

        • memory/3748-1-0x00000000004F0000-0x00000000004F6000-memory.dmp

          Filesize

          24KB

        • memory/3748-2-0x0000000002090000-0x0000000002096000-memory.dmp

          Filesize

          24KB