Analysis

  • max time kernel
    147s
  • max time network
    153s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231215-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
  • submitted
    10-01-2024 06:04

General

  • Target

    2024-01-09_ffe2d316ccefd48278bb7997b7e142b9_cryptolocker.exe

  • Size

    53KB

  • MD5

    ffe2d316ccefd48278bb7997b7e142b9

  • SHA1

    85769cd45626ad755bd3bb79d2e276243c4863e6

  • SHA256

    3b6f987d477ccca9dc15860906ffb5e91e8b3ac3a1fe1140c60551296b4b89c8

  • SHA512

    46d90559cfec3a26dae44c65e30068f12dc198e5677745b1ee99f2eee40da2b11bab221b5c5859315a092048aa96b3b7c933cebbc5316359dd0f82b2fcdf62e2

  • SSDEEP

    768:xQz7yVEhs9+4uR1bytOOtEvwDpjWfbZgBh8i6g7GoF9:xj+VGMOtEvwDpjubEgy9

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\2024-01-09_ffe2d316ccefd48278bb7997b7e142b9_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-01-09_ffe2d316ccefd48278bb7997b7e142b9_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:4932
    • 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:4140

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    54KB

    MD5

    d7b06894dd309ba170f8d1f35b781be6

    SHA1

    99e2f8b00d2d611d7b8c4cca91e2fc875c46a6a0

    SHA256

    4f726fd20dba6641129326676636c914c9315744f67ce6cb304a21055cce60de

    SHA512

    8970d9a4de3dbfe51e21637812da3cf0e378e4cc1be3cc03330cf28aa8f2471d919aec866b37bb4a14d79b8052ef69c63f96dd2c4e02fbaac5d2fd4f4f6ed882

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

    Filesize

    315B

    MD5

    a34ac19f4afae63adc5d2f7bc970c07f

    SHA1

    a82190fc530c265aa40a045c21770d967f4767b8

    SHA256

    d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

    SHA512

    42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

  • memory/4140-19-0x00000000006C0000-0x00000000006C6000-memory.dmp

    Filesize

    24KB

  • memory/4140-25-0x0000000000560000-0x0000000000566000-memory.dmp

    Filesize

    24KB

  • memory/4140-48-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/4932-0-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/4932-3-0x0000000000510000-0x0000000000516000-memory.dmp

    Filesize

    24KB

  • memory/4932-2-0x00000000004D0000-0x00000000004D6000-memory.dmp

    Filesize

    24KB

  • memory/4932-1-0x00000000004D0000-0x00000000004D6000-memory.dmp

    Filesize

    24KB

  • memory/4932-17-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB