Analysis

  • max time kernel
    148s
  • max time network
    155s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240226-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
  • submitted
    11-04-2024 08:56

General

  • Target

    2024-04-11_d825ee1f5ff96a0ae17360ceff1035f7_cryptolocker.exe

  • Size

    106KB

  • MD5

    d825ee1f5ff96a0ae17360ceff1035f7

  • SHA1

    03a2e66a67b600723bd93bb2743fcc6f298baa2f

  • SHA256

    a0d9d0fc5288597e3cf64673dc53d6577f6056b2f822c1324931b509ec9c8654

  • SHA512

    53df2835c126a963fbce4048b82c3f90b603d329ecc0a0f6cc9f58db443d6ee5bb1e0fcd9e12bc58bd0c1781d6d72917c0632fd0a89047ef8747f0699643dbe6

  • SSDEEP

    1536:V6QFElP6n+gMQMOtEvwDpjQGYQbN/PKwNgpQbCJh5:V6a+pOtEvwDpjtzw

Score
9/10

Malware Config

Signatures

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

  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-04-11_d825ee1f5ff96a0ae17360ceff1035f7_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-04-11_d825ee1f5ff96a0ae17360ceff1035f7_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:872
    • C:\Users\Admin\AppData\Local\Temp\asih.exe
      "C:\Users\Admin\AppData\Local\Temp\asih.exe"
      2⤵
      • Executes dropped EXE
      PID:3828

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    106KB

    MD5

    ff4e3c271794482429ed938a348fbf86

    SHA1

    01a6010a1d69c36d9d272b2f08922f231033fb25

    SHA256

    43a43216dd21bc9f2ae150f44bd988d036d5cfd30c1f524c3b9287d498de33a6

    SHA512

    639d5cf4aaaaf48285c3ab4be1c0bf6389c92268e6c037e1cccfb2a9442ba77fe62713432f246cb858942a12ab2e77fa31d78e4d91b658faf610af3c44127b8c

  • memory/872-0-0x00000000006A0000-0x00000000006A6000-memory.dmp

    Filesize

    24KB

  • memory/872-1-0x00000000006A0000-0x00000000006A6000-memory.dmp

    Filesize

    24KB

  • memory/872-2-0x00000000007E0000-0x00000000007E6000-memory.dmp

    Filesize

    24KB

  • memory/3828-19-0x00000000004D0000-0x00000000004D6000-memory.dmp

    Filesize

    24KB

  • memory/3828-17-0x0000000000510000-0x0000000000516000-memory.dmp

    Filesize

    24KB