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Analysis

  • max time kernel
    146s
  • max time network
    161s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20230915-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20230915-enlocale:en-usos:windows10-2004-x64system
  • submitted
    13/10/2023, 20:41

General

  • Target

    2023-08-25_ecc2662666d58f349a067e4cea7f45a0_cryptolocker_JC.exe

  • Size

    53KB

  • MD5

    ecc2662666d58f349a067e4cea7f45a0

  • SHA1

    bffa4bd3724ee49b54bb6885ff35f01248d1cad7

  • SHA256

    d2ea633ff2c53d49406fb9741715ee80b83ba043ac62bdf0047f44a31b4b6911

  • SHA512

    b0a9c10d14c35ed47f0006e82b64d53ecfed68b2b6676f3f35976ab938fc19d0e3a1e31f6eed771463b13dd96c9a7216b5978227e0ca3b7458193e460945e899

  • SSDEEP

    1536:qmbhXDmjr5MOtEvwDpj5cDtKkQZQRKb61E:BbdDmjr+OtEvwDpjMu

Score
7/10

Malware Config

Signatures

  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Executes dropped EXE 1 IoCs
  • 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\2023-08-25_ecc2662666d58f349a067e4cea7f45a0_cryptolocker_JC.exe
    "C:\Users\Admin\AppData\Local\Temp\2023-08-25_ecc2662666d58f349a067e4cea7f45a0_cryptolocker_JC.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:4576
    • C:\Users\Admin\AppData\Local\Temp\asih.exe
      "C:\Users\Admin\AppData\Local\Temp\asih.exe"
      2⤵
      • Executes dropped EXE
      PID:2308

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    53KB

    MD5

    af40b74be106c3a54f0f9c9d39443655

    SHA1

    20f7fc7f0691baa3930c3d3ded1d0a03bf28efcc

    SHA256

    fc483671c107f90d2498ae44c2693c43b5c8aedbfaf26b25ddd0e5fc8cb8ca1d

    SHA512

    0cf5d1a467afd8ae9ae643b1cac187152d1823a1c70609d91e48542ddf4e58bc75ce753ae2b2ccfeba1e05ffb4750812a9702867527eace85b979ce6832fd260

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

    Filesize

    53KB

    MD5

    af40b74be106c3a54f0f9c9d39443655

    SHA1

    20f7fc7f0691baa3930c3d3ded1d0a03bf28efcc

    SHA256

    fc483671c107f90d2498ae44c2693c43b5c8aedbfaf26b25ddd0e5fc8cb8ca1d

    SHA512

    0cf5d1a467afd8ae9ae643b1cac187152d1823a1c70609d91e48542ddf4e58bc75ce753ae2b2ccfeba1e05ffb4750812a9702867527eace85b979ce6832fd260

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

    Filesize

    53KB

    MD5

    af40b74be106c3a54f0f9c9d39443655

    SHA1

    20f7fc7f0691baa3930c3d3ded1d0a03bf28efcc

    SHA256

    fc483671c107f90d2498ae44c2693c43b5c8aedbfaf26b25ddd0e5fc8cb8ca1d

    SHA512

    0cf5d1a467afd8ae9ae643b1cac187152d1823a1c70609d91e48542ddf4e58bc75ce753ae2b2ccfeba1e05ffb4750812a9702867527eace85b979ce6832fd260

  • memory/2308-20-0x00000000006C0000-0x00000000006C6000-memory.dmp

    Filesize

    24KB

  • memory/2308-19-0x0000000002110000-0x0000000002116000-memory.dmp

    Filesize

    24KB

  • memory/2308-26-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/4576-0-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/4576-1-0x0000000000660000-0x0000000000666000-memory.dmp

    Filesize

    24KB

  • memory/4576-2-0x0000000000660000-0x0000000000666000-memory.dmp

    Filesize

    24KB

  • memory/4576-3-0x00000000006D0000-0x00000000006D6000-memory.dmp

    Filesize

    24KB

  • memory/4576-18-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB