Analysis

  • max time kernel
    135s
  • max time network
    125s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240426-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
  • submitted
    22-05-2024 18:15

General

  • Target

    20240521f25127a141e0295e9be57a728d453ed0cryptolocker.exe

  • Size

    37KB

  • MD5

    f25127a141e0295e9be57a728d453ed0

  • SHA1

    8a1ea4a652a54c3d17fee1be34fe25d1d5377fc4

  • SHA256

    5c97497acc6bb9181a68186626ad5cd5b5d6e938d24f71eea6b608b852fcdc7e

  • SHA512

    06589e30f57f1cfed7c0c7d916af20ac5f3acf018dbcd490785c08263e654be2f5e75dc2a2395f708ed2972943e5d24ae9e8bad227219a767a08b0b50bd7e753

  • SSDEEP

    768:fTz7y3lhsT+hs1SQtOOtEvwDpjfAu9+4k:fT+hsMQMOtEvwDpjoIHk

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\20240521f25127a141e0295e9be57a728d453ed0cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\20240521f25127a141e0295e9be57a728d453ed0cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:3144
    • 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:2276

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    37KB

    MD5

    f1e6d5220b3278636f183ba8b97311da

    SHA1

    19affb6659a15ad1d6ebed557cfe8d15a888e0a2

    SHA256

    58318a2bc60f4c310916d7713fb492f9ff4a29224b05c201f5c31d87f0b07d2b

    SHA512

    233170daffa2137a0be38de500b53b5944a4bfb6af0180839a09de02db56e99b5ed7421f1f6c8ca018bb3f0649d0934b640ebf8c52811bc7564037be871657ca

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

    Filesize

    315B

    MD5

    a34ac19f4afae63adc5d2f7bc970c07f

    SHA1

    a82190fc530c265aa40a045c21770d967f4767b8

    SHA256

    d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

    SHA512

    42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

  • memory/2276-23-0x00000000004E0000-0x00000000004E6000-memory.dmp

    Filesize

    24KB

  • memory/3144-0-0x00000000005C0000-0x00000000005C6000-memory.dmp

    Filesize

    24KB

  • memory/3144-1-0x00000000005E0000-0x00000000005E6000-memory.dmp

    Filesize

    24KB

  • memory/3144-8-0x00000000005C0000-0x00000000005C6000-memory.dmp

    Filesize

    24KB