Analysis

  • max time kernel
    144s
  • max time network
    147s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231222-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231222-enlocale:en-usos:windows10-2004-x64system
  • submitted
    12/02/2024, 01:26

General

  • Target

    2024-02-12_2aed50922ca51a90ba561dbc51e0f0e3_cryptolocker.exe

  • Size

    58KB

  • MD5

    2aed50922ca51a90ba561dbc51e0f0e3

  • SHA1

    167cf59c22d47af2139615a853fea5caa2b20c21

  • SHA256

    4169de541891bced4ba5031065d2d0027755b0282b6f5f1311fa977beb9801f3

  • SHA512

    11bd0dc80f53a5e632af2389efd9656e630a8f5d82067ef718b93a678d1a5bbd78ef548cb5f6886fe4ccf9b22e55d91dad401b8c2416c925a781ed792e020f77

  • SSDEEP

    768:UEEmoQDj/xnMp+yptndwe/PWQtOOtEvwDpjIm8lB4dCOBy/cMFqeoYPO+Fv5W:ZzFbxmLPWQMOtEvwDpj38lD/cMAT+K

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 10 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-02-12_2aed50922ca51a90ba561dbc51e0f0e3_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-02-12_2aed50922ca51a90ba561dbc51e0f0e3_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:4664
    • 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:4372

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

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        Downloads

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

          Filesize

          58KB

          MD5

          2ae9dd2886526c14f7e923623c186815

          SHA1

          30faa40b0a8e9c6257e684e653844ab89a3fe407

          SHA256

          0043fe65873ad9920ed89eadc73b812b5217bc5fcf236455ee61366524797c7b

          SHA512

          a3b474fa2f6ede58dfbc9c4ea60d74804488dbdc4270d5e66564e24561f2c4507f8960da09ed8d90aea5a5af271d6f1c53ae3f4cc71badaa5aef808fe7731920

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

          Filesize

          315B

          MD5

          a34ac19f4afae63adc5d2f7bc970c07f

          SHA1

          a82190fc530c265aa40a045c21770d967f4767b8

          SHA256

          d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

          SHA512

          42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

        • memory/4372-20-0x0000000000510000-0x0000000000516000-memory.dmp

          Filesize

          24KB

        • memory/4372-18-0x00000000004E0000-0x00000000004E6000-memory.dmp

          Filesize

          24KB

        • memory/4372-26-0x00000000004D0000-0x00000000004D6000-memory.dmp

          Filesize

          24KB

        • memory/4664-0-0x00000000004A0000-0x00000000004A3000-memory.dmp

          Filesize

          12KB

        • memory/4664-1-0x00000000004E0000-0x00000000004E6000-memory.dmp

          Filesize

          24KB

        • memory/4664-2-0x00000000004E0000-0x00000000004E6000-memory.dmp

          Filesize

          24KB

        • memory/4664-3-0x00000000005E0000-0x00000000005E6000-memory.dmp

          Filesize

          24KB

        • memory/4664-17-0x00000000004A0000-0x00000000004A3000-memory.dmp

          Filesize

          12KB