Analysis

  • max time kernel
    148s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240426-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
  • submitted
    11/06/2024, 01:06

General

  • Target

    2024-06-11_0fc0471ec66c3227f04d670050b6ac6e_cryptolocker.exe

  • Size

    70KB

  • MD5

    0fc0471ec66c3227f04d670050b6ac6e

  • SHA1

    dd7f60e47aa081d1da5d0acebfc6ba1e9a833118

  • SHA256

    b9bb395500b1f57c3027578bb82c3c1c4694da9cc16ccfc6bcad234e1bd5fbce

  • SHA512

    09023146ac920b91f46c80515409e80e6ecaef084e9216ddb298ef60badfab6d7e0c675cd1bf5744e167bf4c1cf6f10fd18b6f6bbf322a21c645de7fde7dc8cc

  • SSDEEP

    768:quVbxjgQNQXtckstOOtEvwDpjAaDOK6PsED3VK2+ZtyOjgO4r9vFAg2rq6W1A1Pu:quJu9cvMOtEvwDpjWYTjipvF2bx1PQAu

Score
9/10
upx

Malware Config

Signatures

  • Detection of CryptoLocker Variants 5 IoCs
  • Detection of Cryptolocker Samples 5 IoCs
  • UPX dump on OEP (original entry point) 5 IoCs
  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Executes dropped EXE 1 IoCs
  • UPX packed file 5 IoCs

    Detects executables packed with UPX/modified UPX open source packer.

  • 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\2024-06-11_0fc0471ec66c3227f04d670050b6ac6e_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-06-11_0fc0471ec66c3227f04d670050b6ac6e_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:2008
    • C:\Users\Admin\AppData\Local\Temp\asih.exe
      "C:\Users\Admin\AppData\Local\Temp\asih.exe"
      2⤵
      • Executes dropped EXE
      PID:1448

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

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        Downloads

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

          Filesize

          70KB

          MD5

          d5e669737752be2ce6608436dfa07015

          SHA1

          47e5ba8b03b0ae1cf5322ff545574f6bdc674646

          SHA256

          9265225773454765e62fdb2a133120726fd5af510133319e306ba80f0c052ca2

          SHA512

          2c926e303ab9ca62f32b6d11484c902b4f93f0ae17d54250f56dd6b327ad069e38044f52992544556205f92b098de3400d317bc5a8eda81e42f01768dc6fcf5a

        • memory/1448-19-0x0000000000500000-0x000000000050F000-memory.dmp

          Filesize

          60KB

        • memory/1448-21-0x00000000006D0000-0x00000000006D6000-memory.dmp

          Filesize

          24KB

        • memory/1448-27-0x0000000000560000-0x0000000000566000-memory.dmp

          Filesize

          24KB

        • memory/1448-28-0x0000000000500000-0x000000000050F000-memory.dmp

          Filesize

          60KB

        • memory/2008-0-0x0000000000500000-0x000000000050F000-memory.dmp

          Filesize

          60KB

        • memory/2008-1-0x0000000000620000-0x0000000000626000-memory.dmp

          Filesize

          24KB

        • memory/2008-2-0x0000000000750000-0x0000000000756000-memory.dmp

          Filesize

          24KB

        • memory/2008-9-0x0000000000620000-0x0000000000626000-memory.dmp

          Filesize

          24KB

        • memory/2008-18-0x0000000000500000-0x000000000050F000-memory.dmp

          Filesize

          60KB