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Analysis

  • max time kernel
    151s
  • max time network
    156s
  • 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, 12:06

General

  • Target

    2024-01-06_25ed969cb0face17ad7dca1c862946a3_cryptolocker.exe

  • Size

    60KB

  • MD5

    25ed969cb0face17ad7dca1c862946a3

  • SHA1

    d1b1a8e5a439bf3ab29d3fda901c711ecb288a31

  • SHA256

    7ea049392ae6c24171c4b704388f75832eed01bd8151e0b7f7f9aafdd067ea2e

  • SHA512

    138989a36ecb1ae90495fa08fdd059959a99a81224271835377de10a5ed91addf9f1e71541529afba22b020ef978916e3fc2a9849594e836509173393e289781

  • SSDEEP

    768:6Qz7yVEhs9+4OR7tOOtEvwDpjLHqPOYRmNxt5I52kGElUAf:6j+1NMOtEvwDpjr8ox8UDElbf

Score
7/10

Malware Config

Signatures

  • 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 6 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-01-06_25ed969cb0face17ad7dca1c862946a3_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-01-06_25ed969cb0face17ad7dca1c862946a3_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:1712
    • 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:4168

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    60KB

    MD5

    157e1e24abb6ef1ec67ddf4f52d6a03b

    SHA1

    8fafec499474b3f871a4ab271f2c93290faf8443

    SHA256

    36db1561d65c8a33a455f724b395a8eebca014ecbb292d024d2cc006e9b92a72

    SHA512

    60534a7a7488391900b81f639e944ad14d0dca4a06daf04342538c1b1f86ec97f00d5686546f6d2c8565cf9049ae2b194cbe3a14d587be24cb8d6452b38b832d

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

    Filesize

    315B

    MD5

    a34ac19f4afae63adc5d2f7bc970c07f

    SHA1

    a82190fc530c265aa40a045c21770d967f4767b8

    SHA256

    d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

    SHA512

    42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

  • memory/1712-0-0x0000000000500000-0x000000000050F000-memory.dmp

    Filesize

    60KB

  • memory/1712-1-0x00000000006B0000-0x00000000006B6000-memory.dmp

    Filesize

    24KB

  • memory/1712-2-0x00000000006B0000-0x00000000006B6000-memory.dmp

    Filesize

    24KB

  • memory/1712-3-0x00000000020F0000-0x00000000020F6000-memory.dmp

    Filesize

    24KB

  • memory/1712-15-0x0000000000500000-0x000000000050F000-memory.dmp

    Filesize

    60KB

  • memory/4168-18-0x0000000000500000-0x000000000050F000-memory.dmp

    Filesize

    60KB

  • memory/4168-20-0x0000000000690000-0x0000000000696000-memory.dmp

    Filesize

    24KB

  • memory/4168-25-0x0000000000660000-0x0000000000666000-memory.dmp

    Filesize

    24KB

  • memory/4168-48-0x0000000000500000-0x000000000050F000-memory.dmp

    Filesize

    60KB