Analysis

  • max time kernel
    150s
  • max time network
    157s
  • 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, 12:15

General

  • Target

    2024-01-06_b6fb8783fe4ffa20e0e574604b7cd8df_cryptolocker.exe

  • Size

    60KB

  • MD5

    b6fb8783fe4ffa20e0e574604b7cd8df

  • SHA1

    9ff0be0d95c1885a9cad842aa8691c7f2a4dabe9

  • SHA256

    c36758d98ada5f3d44d8eac634478a1878cee228e7f65089289d32abdd36223d

  • SHA512

    9f86222f304d5741aca3d9f576284ddd3c39dc3c2aecb66803dcd93f53f1baf44a5cf680273dd1c5937f346a6a81887434f253344a6fee5029361f64a27a2338

  • SSDEEP

    768:6Qz7yVEhs9+4OR7tOOtEvwDpjLHqPOYRmNxt5I52kGElUAl:6j+1NMOtEvwDpjr8ox8UDElbl

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 8 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-01-06_b6fb8783fe4ffa20e0e574604b7cd8df_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-01-06_b6fb8783fe4ffa20e0e574604b7cd8df_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:4208
    • 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:4740

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

        Loading Replay Monitor...

        Downloads

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

          Filesize

          60KB

          MD5

          33d7483d991522d4259933d8f9e3025d

          SHA1

          026cb39116c6f18a5293999e645d28fbeab303f4

          SHA256

          741edbe02be5a9e7cf537a11a0eb789d6ea9e3101e279cf7e75896c659b87d07

          SHA512

          99479e8ade78c7cea06f58680f46849f13e40b92f5f1d81d11bbb8dbc933e41a2d6f459310196803b5b35369a3e70a0aad0f7f75169bc006ebcfa205d1405621

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

          Filesize

          315B

          MD5

          a34ac19f4afae63adc5d2f7bc970c07f

          SHA1

          a82190fc530c265aa40a045c21770d967f4767b8

          SHA256

          d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

          SHA512

          42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

        • memory/4208-0-0x0000000000500000-0x000000000050F000-memory.dmp

          Filesize

          60KB

        • memory/4208-2-0x00000000005F0000-0x00000000005F6000-memory.dmp

          Filesize

          24KB

        • memory/4208-3-0x00000000021C0000-0x00000000021C6000-memory.dmp

          Filesize

          24KB

        • memory/4208-1-0x00000000005F0000-0x00000000005F6000-memory.dmp

          Filesize

          24KB

        • memory/4208-18-0x0000000000500000-0x000000000050F000-memory.dmp

          Filesize

          60KB

        • memory/4740-17-0x0000000000500000-0x000000000050F000-memory.dmp

          Filesize

          60KB

        • memory/4740-21-0x0000000002050000-0x0000000002056000-memory.dmp

          Filesize

          24KB

        • memory/4740-20-0x0000000002150000-0x0000000002156000-memory.dmp

          Filesize

          24KB

        • memory/4740-48-0x0000000000500000-0x000000000050F000-memory.dmp

          Filesize

          60KB