Analysis

  • max time kernel
    189s
  • max time network
    202s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231215-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
  • submitted
    07/01/2024, 12:05

General

  • Target

    2024-01-06_05f19fa8693771910bfeb8b7dad319e7_cryptolocker.exe

  • Size

    50KB

  • MD5

    05f19fa8693771910bfeb8b7dad319e7

  • SHA1

    214083986cef63b18e0ffaecbd80793748bc83ce

  • SHA256

    9c4fe73a2f6b6196cc1c12787060270b32a1f29bfbe455cb9ae47338256943f4

  • SHA512

    4ec0e9369826d200e9f71496f00abd3d5664510b336118bf70de43e188c88d91fed59c250864d9ca1722590e08c76389adbe1db49e3a5b88baa557ce56bd6479

  • SSDEEP

    768:bIDOw9UiaCHfjnE0Sfa7ilR0p9u6p4ICNBCXK9+:bIDOw9a0DwitDZzx

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\2024-01-06_05f19fa8693771910bfeb8b7dad319e7_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-01-06_05f19fa8693771910bfeb8b7dad319e7_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:3896
    • C:\Users\Admin\AppData\Local\Temp\lossy.exe
      "C:\Users\Admin\AppData\Local\Temp\lossy.exe"
      2⤵
      • Executes dropped EXE
      PID:2520

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

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        Downloads

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

          Filesize

          50KB

          MD5

          347df0c599e51a9530cf34d7460cfe42

          SHA1

          14788c9cd7d129cd45bc77c1bc6edfed712a4182

          SHA256

          d1546282a5564316d3a49d8af8cc1aef413cc3e9e6b55ce2eda37108c70db52f

          SHA512

          c7a533b54a9bf823065445a5acd498693efc238668f09e9adb6389d60f8cc0043bc149fa482ed6bcc4b2d244052b563b7b457858166834957a5f75af1ba84289

        • memory/2520-17-0x0000000002060000-0x0000000002066000-memory.dmp

          Filesize

          24KB

        • memory/2520-18-0x0000000002040000-0x0000000002046000-memory.dmp

          Filesize

          24KB

        • memory/3896-0-0x00000000006E0000-0x00000000006E6000-memory.dmp

          Filesize

          24KB

        • memory/3896-1-0x00000000006E0000-0x00000000006E6000-memory.dmp

          Filesize

          24KB

        • memory/3896-2-0x00000000021A0000-0x00000000021A6000-memory.dmp

          Filesize

          24KB