Analysis

  • max time kernel
    150s
  • 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
    10/06/2024, 21:36

General

  • Target

    2024-06-10_98768e8703a5b946d5548b8321c988fa_cryptolocker.exe

  • Size

    41KB

  • MD5

    98768e8703a5b946d5548b8321c988fa

  • SHA1

    ccd62b6ed2800c10dcb7eccf02e211bbdf8e0552

  • SHA256

    451a4d4b2fa6f735b20ae8c90402b6b75446480756204509bb8e9d2456de3ae3

  • SHA512

    2264fcd842e70c413a55a0cc8e4b28d82f9202828757e34aad223762d019ee869032d526a91d9dbff5f6d4bd4b980984faab121686a1f15cd93f174f50d8bdab

  • SSDEEP

    768:q7PdFecFS5agQtOOtEvwDpjeMLZdzuqpXsiE8Wq/DpkITYljy:qDdFJy3QMOtEvwDpjjWMl7T6+

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\2024-06-10_98768e8703a5b946d5548b8321c988fa_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-06-10_98768e8703a5b946d5548b8321c988fa_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:4100
    • C:\Users\Admin\AppData\Local\Temp\asih.exe
      "C:\Users\Admin\AppData\Local\Temp\asih.exe"
      2⤵
      • Executes dropped EXE
      PID:1196

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

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        Downloads

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

          Filesize

          42KB

          MD5

          a9e9539b5dd5a344e4b7cee1819b7cc0

          SHA1

          42bf68294ee851bba68055db91e423e53c0f968a

          SHA256

          2b43a49987b48a0fe7eb874ef5e59ab1c2645cfbcb9a83a4d4f1119ac1b8ad88

          SHA512

          a101caeac621e7a50e2b636996e0ca148ff679d592fd102cc7c834057ab3ba6a995ebd8a1a8b9086ae566c68391086e516aa5987f656e414ffb31531f0766f59

        • memory/1196-19-0x0000000000500000-0x0000000000510000-memory.dmp

          Filesize

          64KB

        • memory/1196-21-0x00000000004F0000-0x00000000004F6000-memory.dmp

          Filesize

          24KB

        • memory/1196-27-0x00000000004D0000-0x00000000004D6000-memory.dmp

          Filesize

          24KB

        • memory/1196-28-0x0000000000500000-0x0000000000510000-memory.dmp

          Filesize

          64KB

        • memory/4100-0-0x0000000000500000-0x0000000000510000-memory.dmp

          Filesize

          64KB

        • memory/4100-1-0x00000000006A0000-0x00000000006A6000-memory.dmp

          Filesize

          24KB

        • memory/4100-3-0x00000000006C0000-0x00000000006C6000-memory.dmp

          Filesize

          24KB

        • memory/4100-2-0x00000000006A0000-0x00000000006A6000-memory.dmp

          Filesize

          24KB

        • memory/4100-17-0x0000000000500000-0x0000000000510000-memory.dmp

          Filesize

          64KB