Analysis

  • max time kernel
    147s
  • max time network
    155s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240226-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
  • submitted
    14-03-2024 23:53

General

  • Target

    2024-03-14_de47ff97b4894230565258bf2593e1b5_cryptolocker.exe

  • Size

    60KB

  • MD5

    de47ff97b4894230565258bf2593e1b5

  • SHA1

    99d85983c6508d19de251c4503049c3355673d88

  • SHA256

    aa4d382bf8d7b3151431cc8d7f72ab628a5b2f42c7278e568550d3eacc04a2b6

  • SHA512

    f8f6eed6627fcf1b86b7c7edd640823575fdf3abb41c7451b5d37b3eb1a1c07e182bd816a540ab058a73449a906faf6fe6a4103631ab1f3f7579f663fad6f00b

  • SSDEEP

    1536:qmbhXDmjr5MOtEvwDpj5cDtKkQZQRKb6144:BbdDmjr+OtEvwDpjMz

Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 5 IoCs
  • Detection of Cryptolocker Samples 2 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
  • 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\2024-03-14_de47ff97b4894230565258bf2593e1b5_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-03-14_de47ff97b4894230565258bf2593e1b5_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:880
    • C:\Users\Admin\AppData\Local\Temp\asih.exe
      "C:\Users\Admin\AppData\Local\Temp\asih.exe"
      2⤵
      • Executes dropped EXE
      PID:4840

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    60KB

    MD5

    c52e86f5ad3b756669b7ab1ae02e8589

    SHA1

    423e5f50f95be34edb80611c0d81124ce4bc3b0e

    SHA256

    0d60f94bae5833058ec932309abe2b8eb37ce9e3dd6ec7eb1f1278b05d902ad9

    SHA512

    17ff5a92aad9e04f4dbb9982e754a3c2842abf7f2ad4f818d9e4bb53a7ef871300b3b4670bfd984fe4776cda23273955608aab0adc24ba4a566ed283ee1a685d

  • memory/880-0-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/880-1-0x00000000006B0000-0x00000000006B6000-memory.dmp

    Filesize

    24KB

  • memory/880-2-0x00000000006B0000-0x00000000006B6000-memory.dmp

    Filesize

    24KB

  • memory/880-3-0x00000000006D0000-0x00000000006D6000-memory.dmp

    Filesize

    24KB

  • memory/880-18-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/4840-17-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/4840-20-0x0000000000660000-0x0000000000666000-memory.dmp

    Filesize

    24KB

  • memory/4840-27-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB