Analysis

  • max time kernel
    150s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240508-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
  • submitted
    10/06/2024, 21:45

General

  • Target

    2024-06-10_f934fae6bfbb6268566f86cd9b38e5ec_cryptolocker.exe

  • Size

    95KB

  • MD5

    f934fae6bfbb6268566f86cd9b38e5ec

  • SHA1

    b8b2f58ffdd8d5b7540da4c0b9c758510a2e38de

  • SHA256

    2c571c3a1e8a8d5e005c8f2e58124ecb37aa4e10449898c5a4e44a84088476eb

  • SHA512

    272bfd95a4ae65a05f69ee62bb2855e2366fb4aada134be003a5711fcbd0859c162a216b613af9b7ef23619ba53e7c1ee2ea72e9ed841c058f2e824468212b61

  • SSDEEP

    1536:zj+soPSMOtEvwDpj4ktBl01hJl8QAPM8Ho6cRDjgx/ks:zCsanOtEvwDpjB3

Score
9/10
upx

Malware Config

Signatures

  • Detection of CryptoLocker Variants 4 IoCs
  • Detection of Cryptolocker Samples 4 IoCs
  • UPX dump on OEP (original entry point) 4 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 4 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\2024-06-10_f934fae6bfbb6268566f86cd9b38e5ec_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-06-10_f934fae6bfbb6268566f86cd9b38e5ec_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:116
    • C:\Users\Admin\AppData\Local\Temp\misid.exe
      "C:\Users\Admin\AppData\Local\Temp\misid.exe"
      2⤵
      • Executes dropped EXE
      PID:2636

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

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        Downloads

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

          Filesize

          95KB

          MD5

          20076eeb62778de2b539f028c7afa874

          SHA1

          e1b5892d1b295ad42a0d6e8a30231ce9546685ad

          SHA256

          d18e94dbd0c07915be65c192df3528432cdc1d4d35f020e3aee30f83b122d563

          SHA512

          fc8df1bf5e7587aa94f933357fe967c946b51463ab3f4dd6c71f2e3edf528865d77e3948deb485421d9a2d379cd1d2fc8d81ada77660a3e59afae6381c2b3713

        • memory/116-0-0x0000000000500000-0x0000000000510000-memory.dmp

          Filesize

          64KB

        • memory/116-9-0x0000000000620000-0x0000000000626000-memory.dmp

          Filesize

          24KB

        • memory/116-2-0x0000000000750000-0x0000000000756000-memory.dmp

          Filesize

          24KB

        • memory/116-1-0x0000000000620000-0x0000000000626000-memory.dmp

          Filesize

          24KB

        • memory/116-16-0x0000000000500000-0x0000000000510000-memory.dmp

          Filesize

          64KB

        • memory/2636-25-0x0000000000520000-0x0000000000526000-memory.dmp

          Filesize

          24KB

        • memory/2636-19-0x00000000006C0000-0x00000000006C6000-memory.dmp

          Filesize

          24KB

        • memory/2636-26-0x0000000000500000-0x0000000000510000-memory.dmp

          Filesize

          64KB