Analysis

  • max time kernel
    150s
  • max time network
    152s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240226-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
  • submitted
    18/03/2024, 14:42

General

  • Target

    2024-03-18_474ac2f9f91accd1d7ecf27988686c69_cryptolocker.exe

  • Size

    78KB

  • MD5

    474ac2f9f91accd1d7ecf27988686c69

  • SHA1

    296297af33399e1bd21726a4bfef617740f95849

  • SHA256

    981c761b82505b1b1e0f047d8a591e0b3045ae033509c5a07378378eee50b684

  • SHA512

    6f868370cd07f06813c770dd6007efb7763a72edbe7329ea9093d9e69e5e089288a15465853bff097e35b023dc0f06565adf80f2055071c71ebea9a6be792725

  • SSDEEP

    1536:ZzFbxmLPWQMOtEvwDpj386Sj/WprgJN6tZdOyJ3KEWTPs:ZVxkGOtEvwDpjcaxN

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 6 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-03-18_474ac2f9f91accd1d7ecf27988686c69_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-03-18_474ac2f9f91accd1d7ecf27988686c69_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:4084
    • 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:4708

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

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        Downloads

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

          Filesize

          78KB

          MD5

          c8d8cdde904f8796d15019bc01fa8c9f

          SHA1

          d440cfc8959ae95d2108f72fd6faa37dd8523730

          SHA256

          801468270dad299533d0d953d3f49a2d034f58a040726f5f3e568260fb376a9b

          SHA512

          9277cc465c6be747009eb50d3e1ec8325f76c1ffd0fc6261f2794463cba8e6d80db563b3895271ce8d23ce88254b4a97690317ede456cae3f469f68d1387581e

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

          Filesize

          315B

          MD5

          a34ac19f4afae63adc5d2f7bc970c07f

          SHA1

          a82190fc530c265aa40a045c21770d967f4767b8

          SHA256

          d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

          SHA512

          42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

        • memory/4084-0-0x00000000004E0000-0x00000000004E3000-memory.dmp

          Filesize

          12KB

        • memory/4084-1-0x0000000000670000-0x0000000000676000-memory.dmp

          Filesize

          24KB

        • memory/4084-2-0x0000000000670000-0x0000000000676000-memory.dmp

          Filesize

          24KB

        • memory/4084-3-0x00000000006E0000-0x00000000006E6000-memory.dmp

          Filesize

          24KB

        • memory/4084-17-0x00000000004E0000-0x00000000004E3000-memory.dmp

          Filesize

          12KB

        • memory/4708-20-0x00000000005E0000-0x00000000005E6000-memory.dmp

          Filesize

          24KB

        • memory/4708-19-0x0000000000560000-0x0000000000566000-memory.dmp

          Filesize

          24KB