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Analysis

  • max time kernel
    93s
  • max time network
    94s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240508-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
  • submitted
    10/05/2024, 07:25

General

  • Target

    2024-05-10_1d353703106406b9e64ed7b5dca2d95f_cryptolocker.exe

  • Size

    95KB

  • MD5

    1d353703106406b9e64ed7b5dca2d95f

  • SHA1

    4643f1de61b65a8b86063182c29f61bad99233b2

  • SHA256

    e57d7d235d04c418345ff7cbb18b6dfc2cbaa4402d0119dbcd65e60e6cdaca7c

  • SHA512

    564be489e0a67a29cbfd900283cdfc40234d9e386fee3f777b5ce6ca0d6c0efa278957097eef1b98e4565df1eb2e62269ebcfda267ebca90690f0907c514146c

  • SSDEEP

    768:xQz7yVEhs9+4uR1bytOOtEvwDpjWfbZ7uyA36S7MpxRiWNa9mktJYt:xj+VGMOtEvwDpjubwQEIiVmkst

Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 5 IoCs
  • Detection of Cryptolocker Samples 5 IoCs
  • Detects executables built or packed with MPress PE compressor 5 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\2024-05-10_1d353703106406b9e64ed7b5dca2d95f_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-05-10_1d353703106406b9e64ed7b5dca2d95f_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:4896
    • 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:2272

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    95KB

    MD5

    cde4bf7fd947a9ceaf8b8d5e7f4324e8

    SHA1

    ed72058c833b06095e93de49c6ecc92261bc1b38

    SHA256

    887c0706797948154425b3d5f2a80866893274d0df9087bca3670b4b16caf160

    SHA512

    fc4b32a9d7cd325c4b4654105b2c87ddd0f46eeab9d05c25138f1f68fb59336347763b3da4d780f5b62429b2461d933418cebede3091454cb6983068ca637baf

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

    Filesize

    315B

    MD5

    a34ac19f4afae63adc5d2f7bc970c07f

    SHA1

    a82190fc530c265aa40a045c21770d967f4767b8

    SHA256

    d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

    SHA512

    42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

  • memory/2272-18-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/2272-20-0x00000000006D0000-0x00000000006D6000-memory.dmp

    Filesize

    24KB

  • memory/2272-26-0x00000000006B0000-0x00000000006B6000-memory.dmp

    Filesize

    24KB

  • memory/2272-47-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/4896-0-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/4896-1-0x0000000002140000-0x0000000002146000-memory.dmp

    Filesize

    24KB

  • memory/4896-2-0x0000000002040000-0x0000000002046000-memory.dmp

    Filesize

    24KB

  • memory/4896-9-0x0000000002140000-0x0000000002146000-memory.dmp

    Filesize

    24KB

  • memory/4896-16-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB