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Analysis

  • max time kernel
    141s
  • max time network
    173s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231215-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
  • submitted
    18/01/2024, 22:23

General

  • Target

    2024-01-18_070670f218b67fd4d2f996e5179433b6_cryptolocker.exe

  • Size

    59KB

  • MD5

    070670f218b67fd4d2f996e5179433b6

  • SHA1

    558f6de8a7534c03c29464e238617c09fe449694

  • SHA256

    3d719e46ddfebc1e9ca192bfd66bd8a94b8ad8fa834b41b954522bd68089eae2

  • SHA512

    da0d4dc0edc7ad31dc9d7ecc3f08b4a7a6c2793700e2ca8781ab710a5bf911047772aceddb4fdbc0c58391cd7f5cd1491ba6fac641e939c20d21e6392db9692b

  • SSDEEP

    1536:ZzFbxmLPWQMOtEvwDpj386Sj/WprgJN6tZdOyJT/E2:ZVxkGOtEvwDpjcOh

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 7 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-01-18_070670f218b67fd4d2f996e5179433b6_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-01-18_070670f218b67fd4d2f996e5179433b6_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:4528
    • 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:2000

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    60KB

    MD5

    7906e4f672e90b4740a976026ceae56a

    SHA1

    197d1699329e0ee51da46f9af5d7dd279df1613e

    SHA256

    84bf31c693859d3915b91dc5ac51a30b7824054f41acc43dd65c5d2f439ba45a

    SHA512

    72f22f17ff4fe31bf347a48bef3061be7d492cf2ac39b102921e361a9a69837e714999b1b88ff219b33822b2819dc04cd3f0f4c297d095689efa887c206af60d

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

    Filesize

    315B

    MD5

    a34ac19f4afae63adc5d2f7bc970c07f

    SHA1

    a82190fc530c265aa40a045c21770d967f4767b8

    SHA256

    d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

    SHA512

    42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

  • memory/2000-17-0x0000000000520000-0x0000000000526000-memory.dmp

    Filesize

    24KB

  • memory/2000-19-0x0000000000660000-0x0000000000666000-memory.dmp

    Filesize

    24KB

  • memory/2000-20-0x00000000004D0000-0x00000000004D6000-memory.dmp

    Filesize

    24KB

  • memory/4528-0-0x0000000000410000-0x0000000000413000-memory.dmp

    Filesize

    12KB

  • memory/4528-1-0x0000000000520000-0x0000000000526000-memory.dmp

    Filesize

    24KB

  • memory/4528-2-0x0000000000520000-0x0000000000526000-memory.dmp

    Filesize

    24KB

  • memory/4528-3-0x0000000000550000-0x0000000000556000-memory.dmp

    Filesize

    24KB

  • memory/4528-21-0x0000000000410000-0x0000000000413000-memory.dmp

    Filesize

    12KB