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Analysis

  • max time kernel
    170s
  • max time network
    187s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231215-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
  • submitted
    05/01/2024, 05:47

General

  • Target

    2024-01-01_9894d4e2ec69a06212db6c062e71a601_cryptolocker.exe

  • Size

    39KB

  • MD5

    9894d4e2ec69a06212db6c062e71a601

  • SHA1

    bd2f15a9a3c505d1a2a3c9a31627a83dce224547

  • SHA256

    d1c77c66e97f0a057a438b968edcbd73cb1cee46183d2fe7d70909c0e228fc75

  • SHA512

    da9fc4559a07ddafdbdfd6cc52c163ed6c623bdf4842239a57b763f1e1cfcf37af1fbd6209ae980c6ef47d4cbc750883291c3a03ea323de28a7b6d9f08aab74a

  • SSDEEP

    768:6Qz7yVEhs9+4OR7tOOtEvwDpjLHqh6nzhw:6j+1NMOtEvwDpjrRzi

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\2024-01-01_9894d4e2ec69a06212db6c062e71a601_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-01-01_9894d4e2ec69a06212db6c062e71a601_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:3240
    • 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:1520

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    40KB

    MD5

    f1aa1c5057a4d8e8ffda3a709f9ab6ad

    SHA1

    70cbf0db45a499850fa8c11d37e324f3f4422e4a

    SHA256

    03a1cb6fccef1a6a4c87a2fe4487f8f6a8a293b488d9502e85aa5dce3d8724d1

    SHA512

    34269e2e06a3756953dc22736ac03aceb17e1af8d435ccf25840e643fc0b7696bd5167b24f437b007352b9e98c9176e59f9c2849f6e0b5907d24c1dd25f351a0

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

    Filesize

    315B

    MD5

    a34ac19f4afae63adc5d2f7bc970c07f

    SHA1

    a82190fc530c265aa40a045c21770d967f4767b8

    SHA256

    d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

    SHA512

    42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

  • memory/1520-19-0x00000000004E0000-0x00000000004E6000-memory.dmp

    Filesize

    24KB

  • memory/1520-18-0x0000000000510000-0x0000000000516000-memory.dmp

    Filesize

    24KB

  • memory/1520-48-0x0000000000500000-0x000000000050F000-memory.dmp

    Filesize

    60KB

  • memory/3240-0-0x0000000000500000-0x000000000050F000-memory.dmp

    Filesize

    60KB

  • memory/3240-2-0x00000000004D0000-0x00000000004D6000-memory.dmp

    Filesize

    24KB

  • memory/3240-3-0x00000000004F0000-0x00000000004F6000-memory.dmp

    Filesize

    24KB

  • memory/3240-1-0x00000000004D0000-0x00000000004D6000-memory.dmp

    Filesize

    24KB

  • memory/3240-20-0x0000000000500000-0x000000000050F000-memory.dmp

    Filesize

    60KB