Analysis

  • max time kernel
    130s
  • max time network
    123s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240419-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240419-enlocale:en-usos:windows10-2004-x64system
  • submitted
    05/05/2024, 05:26

General

  • Target

    2024-05-05_df20c5b288d537545f5cb1778162449e_cryptolocker.exe

  • Size

    39KB

  • MD5

    df20c5b288d537545f5cb1778162449e

  • SHA1

    8102eccb21cd3734c3ec1c6182e9d52070e10e8f

  • SHA256

    435cb902e81f957fa94f9bd9b35722c5efbfd2ee01e7dbb5f52db0df1ef8e20b

  • SHA512

    8d96f2766565a33346b0fd6006f906e563bb4a058b8383a92d00cedf61623c9ce91653d9f848377acf29e85306cd88255603425d4205b9b60fdf80b2bb21ce99

  • SSDEEP

    768:UEEmoQDj/xnMp+yptndwe/PWQtOOtEvwDpjLeJAsKuDk9lJ:ZzFbxmLPWQMOtEvwDpjLeJAsKcWJ

Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 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 10 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-05-05_df20c5b288d537545f5cb1778162449e_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-05-05_df20c5b288d537545f5cb1778162449e_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:2216
    • 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:1164

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    39KB

    MD5

    a1e697cb69013b66c068bd0c201f278b

    SHA1

    8b74ea3a751fa3b91198ee50495472f879e86795

    SHA256

    35a87c81a886d83e508b1ae9287da94cbed7dae619936f0c1dae38aa45ed6d25

    SHA512

    ef277212e9208f9ef9baa932606f5f44ba0a07ba2551b35c65ededbab5bc97ec1a31b6e69fc013d515564fb4bebf0b53fae9087fdb81a932e3594d98d356b7ca

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

    Filesize

    315B

    MD5

    a34ac19f4afae63adc5d2f7bc970c07f

    SHA1

    a82190fc530c265aa40a045c21770d967f4767b8

    SHA256

    d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

    SHA512

    42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

  • memory/1164-18-0x00000000004E0000-0x00000000004E3000-memory.dmp

    Filesize

    12KB

  • memory/1164-20-0x0000000002060000-0x0000000002066000-memory.dmp

    Filesize

    24KB

  • memory/1164-26-0x00000000021E0000-0x00000000021E6000-memory.dmp

    Filesize

    24KB

  • memory/2216-0-0x00000000004E0000-0x00000000004E3000-memory.dmp

    Filesize

    12KB

  • memory/2216-1-0x00000000006A0000-0x00000000006A6000-memory.dmp

    Filesize

    24KB

  • memory/2216-2-0x00000000006C0000-0x00000000006C6000-memory.dmp

    Filesize

    24KB

  • memory/2216-9-0x00000000006A0000-0x00000000006A6000-memory.dmp

    Filesize

    24KB

  • memory/2216-17-0x00000000004E0000-0x00000000004E3000-memory.dmp

    Filesize

    12KB