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, 21:41

General

  • Target

    2024-06-10_e0f17ee4360c34ee7c7bafd8080d956e_cryptolocker.exe

  • Size

    40KB

  • MD5

    e0f17ee4360c34ee7c7bafd8080d956e

  • SHA1

    d2249578c4bacb7676bfe45160714e2e1d44ed28

  • SHA256

    f784f269cfc66250dce1ce50fc804144861151b2fbf9c260351b4841f42ae6de

  • SHA512

    9f1dcbae9068b94685fb41a33be79c423bbfc657e07f5f0a9f8798ba7ecf523354f878f722b56d831b7cf7b6a00fea5a25e15fda83a067aeb890f816154810c9

  • SSDEEP

    768:q7PdFecFS5agQtOOtEvwDpjeMLZdzuqpXsiE8Wq/DpkITYabDbX:qDdFJy3QMOtEvwDpjjWMl7Tdr

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_e0f17ee4360c34ee7c7bafd8080d956e_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-06-10_e0f17ee4360c34ee7c7bafd8080d956e_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:1328
    • C:\Users\Admin\AppData\Local\Temp\asih.exe
      "C:\Users\Admin\AppData\Local\Temp\asih.exe"
      2⤵
      • Executes dropped EXE
      PID:4600

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

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        Downloads

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

          Filesize

          40KB

          MD5

          75aa511b8642ae23bff1fc3a22deac6e

          SHA1

          a65c73a943296aa81b103f29093c3a81bed6a10d

          SHA256

          e112fe4bae004918faf0efb5ae338aeaa536a8c5f358d857915d3ee1ed11559b

          SHA512

          adfdf748beddb136d7007b453384eda1029f471b672ce75839c5b8b97859f7efa0be6679f4a58656606ea915a2b2c8784f0d1f6ed8184c6a2b7959aeeeb64c31

        • memory/1328-0-0x0000000000500000-0x0000000000510000-memory.dmp

          Filesize

          64KB

        • memory/1328-1-0x00000000005C0000-0x00000000005C6000-memory.dmp

          Filesize

          24KB

        • memory/1328-2-0x00000000005E0000-0x00000000005E6000-memory.dmp

          Filesize

          24KB

        • memory/1328-9-0x00000000005C0000-0x00000000005C6000-memory.dmp

          Filesize

          24KB

        • memory/1328-18-0x0000000000500000-0x0000000000510000-memory.dmp

          Filesize

          64KB

        • memory/4600-20-0x0000000002070000-0x0000000002076000-memory.dmp

          Filesize

          24KB

        • memory/4600-26-0x0000000000660000-0x0000000000666000-memory.dmp

          Filesize

          24KB

        • memory/4600-27-0x0000000000500000-0x0000000000510000-memory.dmp

          Filesize

          64KB