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
    11/06/2024, 00:51

General

  • Target

    2024-06-11_2d060220f63307eebdf390edaf32f996_cryptolocker.exe

  • Size

    61KB

  • MD5

    2d060220f63307eebdf390edaf32f996

  • SHA1

    89a51ba075ddcb8ae3eaf649f99053d8c5ca631f

  • SHA256

    fc888caaeb4c359d4b6c39cec91572d84f36cc568818ec30861cf8c3d68a2997

  • SHA512

    3330b1724a52a16b1a67fb59dbf09ec52285e86ff97861ab0de3d139df0cbc9939847667139156a3cb4c89a4ab64da5e9e3152ae672d76e47f0979b559f1b994

  • SSDEEP

    768:H6LsoEEeegiZPvEhHSG+gk5NQXtckstOOtEvwDpjhBaD3TUogs/VXpAP6pd3k:H6QFElP6n+gou9cvMOtEvwDpjCpVXz3k

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_2d060220f63307eebdf390edaf32f996_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-06-11_2d060220f63307eebdf390edaf32f996_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:3112
    • C:\Users\Admin\AppData\Local\Temp\asih.exe
      "C:\Users\Admin\AppData\Local\Temp\asih.exe"
      2⤵
      • Executes dropped EXE
      PID:5036

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

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        Downloads

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

          Filesize

          61KB

          MD5

          3fe42829574a832714b5872a18b02334

          SHA1

          31afdc581c749256a4fb2929b31df7f20baa9d03

          SHA256

          6a5012754b4f2b50b264633180b5f3fa520b9a7df891b0a87a884dc43e8a7d4a

          SHA512

          01c14289db6f6bbc130209de23fe56570aae2438703e623d3758f63ef1177b3a89962336a97eab0bbd334ea926ce791e9f9f54c0035074a96b4cf4a1182784b9

        • memory/3112-0-0x0000000000500000-0x0000000000510000-memory.dmp

          Filesize

          64KB

        • memory/3112-1-0x00000000004D0000-0x00000000004D6000-memory.dmp

          Filesize

          24KB

        • memory/3112-2-0x00000000004D0000-0x00000000004D6000-memory.dmp

          Filesize

          24KB

        • memory/3112-3-0x00000000004F0000-0x00000000004F6000-memory.dmp

          Filesize

          24KB

        • memory/3112-19-0x0000000000500000-0x0000000000510000-memory.dmp

          Filesize

          64KB

        • memory/5036-17-0x0000000000500000-0x0000000000510000-memory.dmp

          Filesize

          64KB

        • memory/5036-26-0x0000000000620000-0x0000000000626000-memory.dmp

          Filesize

          24KB

        • memory/5036-20-0x0000000000650000-0x0000000000656000-memory.dmp

          Filesize

          24KB

        • memory/5036-27-0x0000000000500000-0x0000000000510000-memory.dmp

          Filesize

          64KB