Analysis

  • max time kernel
    143s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231215-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
  • submitted
    14-02-2024 00:38

General

  • Target

    2024-02-14_63e39df00fda598b12ad9a5bdf0cbe10_cryptolocker.exe

  • Size

    46KB

  • MD5

    63e39df00fda598b12ad9a5bdf0cbe10

  • SHA1

    b0e5b171b1a6e6ccaa7622b796e421b53ed50322

  • SHA256

    abe993c6928b05f4c038d35444da06714cfbd19177574db7a67f580a1fdeb82c

  • SHA512

    eaf934fdc7a020ba2cc3be42ee19820e66f27ef2a53b20afa717e5ada9b58f7e2b93f9c4ec6ff1adebd0e79a4f7d5fb4234e52516421cc277e4bb3e2766f5828

  • SSDEEP

    768:UEEmoQDj/xnMp+yptndwe/PWQtOOtEvwDpjIm8z2iaSIO/WZrEu/d+qmsUHQ1ws/:ZzFbxmLPWQMOtEvwDpj386Sj/WprqQ1B

Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 1 IoCs
  • Checks computer location settings 2 TTPs 2 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).

  • Modifies system certificate store 2 TTPs 8 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-02-14_63e39df00fda598b12ad9a5bdf0cbe10_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-02-14_63e39df00fda598b12ad9a5bdf0cbe10_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:2976
    • C:\Users\Admin\AppData\Local\Temp\misid.exe
      "C:\Users\Admin\AppData\Local\Temp\misid.exe"
      2⤵
      • Checks computer location settings
      • Executes dropped EXE
      • Modifies system certificate store
      PID:3688

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    47KB

    MD5

    03e6627b4f241a3336dbb1216dee3b87

    SHA1

    948c2e752c894866c9ef2f701062ceb4eb1dbb7c

    SHA256

    ea35096f15bf09274ed0e0f9e71a24254dd35c33f8bbd467625b923384b4bd5b

    SHA512

    bc79a96a0bf2fc78ed623b6eb39030843d16bea6b03438f6a781817c098c7512a569a0f040d0a12214726487e851d665b1e72d411e7903387f91467ea57e7433

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

    Filesize

    315B

    MD5

    a34ac19f4afae63adc5d2f7bc970c07f

    SHA1

    a82190fc530c265aa40a045c21770d967f4767b8

    SHA256

    d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

    SHA512

    42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

  • memory/2976-0-0x00000000004E0000-0x00000000004E3000-memory.dmp

    Filesize

    12KB

  • memory/2976-1-0x00000000005A0000-0x00000000005A6000-memory.dmp

    Filesize

    24KB

  • memory/2976-2-0x00000000005A0000-0x00000000005A6000-memory.dmp

    Filesize

    24KB

  • memory/2976-3-0x0000000002230000-0x0000000002236000-memory.dmp

    Filesize

    24KB

  • memory/2976-18-0x00000000004E0000-0x00000000004E3000-memory.dmp

    Filesize

    12KB

  • memory/3688-17-0x00000000005A0000-0x00000000005A6000-memory.dmp

    Filesize

    24KB

  • memory/3688-20-0x00000000006C0000-0x00000000006C6000-memory.dmp

    Filesize

    24KB

  • memory/3688-25-0x00000000006A0000-0x00000000006A6000-memory.dmp

    Filesize

    24KB