Analysis

  • max time kernel
    149s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240508-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
  • submitted
    05-06-2024 02:52

General

  • Target

    2024-06-05_edcfdae289ec1a3ca6b2de2afbe7bb0a_cryptolocker.exe

  • Size

    50KB

  • MD5

    edcfdae289ec1a3ca6b2de2afbe7bb0a

  • SHA1

    22ac64dcf8ffb869cc41c262891a3df25944f4dc

  • SHA256

    d345072311235d9f93c24ab9704581e50ceab15694a52ad171fa31c20f09e21e

  • SHA512

    67f4a0c7f7a00003391c68978abfcc8de85c623223d4355cf87cd2d94269ce9881d89691d87ebb5bd5c45af12ac8bdb48a2a0b3a1b5de4acb8e3c786d0ebdfcb

  • SSDEEP

    1536:ZzFbxmLPWQMOtEvwDpj386Sj/WprqQ15x8rb:ZVxkGOtEvwDpjcL

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 8 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-06-05_edcfdae289ec1a3ca6b2de2afbe7bb0a_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-06-05_edcfdae289ec1a3ca6b2de2afbe7bb0a_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:3128
    • 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:1716

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    51KB

    MD5

    9ef600271df9c459fc2b039e331dc29a

    SHA1

    a8313ca1ece503d795a83768a0c62cc8886ba556

    SHA256

    385783ae2b6e5c1532fb1fe8cf8a271984250f94e42e0d610b5b5aba56eefb06

    SHA512

    b60e478898f46fab2a7f06a58c9c32c3ca63db3a720f13a0231222b806d2fae69a4c525f79d883f8a21abc636ffa610eef667f18d3be70b239a3f75a8fa41256

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

    Filesize

    315B

    MD5

    a34ac19f4afae63adc5d2f7bc970c07f

    SHA1

    a82190fc530c265aa40a045c21770d967f4767b8

    SHA256

    d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

    SHA512

    42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

  • memory/1716-17-0x0000000000460000-0x00000000004A0000-memory.dmp

    Filesize

    256KB

  • memory/1716-19-0x0000000002080000-0x0000000002086000-memory.dmp

    Filesize

    24KB

  • memory/1716-25-0x00000000004E0000-0x00000000004E6000-memory.dmp

    Filesize

    24KB

  • memory/3128-0-0x00000000004E0000-0x00000000004F0000-memory.dmp

    Filesize

    64KB

  • memory/3128-1-0x00000000006C0000-0x00000000006C6000-memory.dmp

    Filesize

    24KB

  • memory/3128-2-0x00000000006E0000-0x00000000006E6000-memory.dmp

    Filesize

    24KB

  • memory/3128-9-0x00000000006C0000-0x00000000006C6000-memory.dmp

    Filesize

    24KB