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Analysis

  • max time kernel
    138s
  • max time network
    146s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240226-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
  • submitted
    04/05/2024, 04:47

General

  • Target

    2024-05-04_86c235b66d9b2482e13a0a2da7d046f2_cryptolocker.exe

  • Size

    54KB

  • MD5

    86c235b66d9b2482e13a0a2da7d046f2

  • SHA1

    00e6d08840cdb2b776e5d4cb0f16a7ab136ccfdb

  • SHA256

    966fea44fe1e8994c36f5c1415a2619f5524f21b687397c4b920f380eeedb54d

  • SHA512

    11dc76e04dc7550343add9199de011ce076fb066664147ed1f1d7f3299a9f2a198d8457f9653faa2621c07109c0ad117c6278d69c259d8a9dd2f313068419151

  • SSDEEP

    1536:ZzFbxmLPWQMOtEvwDpj386Sj/WprgJN6tZdO5Uoj:ZVxkGOtEvwDpjcZ

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\2024-05-04_86c235b66d9b2482e13a0a2da7d046f2_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-05-04_86c235b66d9b2482e13a0a2da7d046f2_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:3264
    • 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:3120
  • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
    "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --mojo-platform-channel-handle=3996 --field-trial-handle=3084,i,4016110471176367543,14287608422419064331,262144 --variations-seed-version /prefetch:8
    1⤵
      PID:3864

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    Downloads

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

      Filesize

      54KB

      MD5

      d69831c8080fb461e9fde50878a7df32

      SHA1

      c983d943d93c423216047d88c29ba36b1873f2c5

      SHA256

      3824c2c58436a3b2e63be1c5bc6e580c52d96a660334ad9e088676fcdda78a9c

      SHA512

      69de5a4b83fa3b83f435673bb34a86f2eb7eda99aacf31ddd486a3acb875235794b903694a63dc5b2009a3a784ac7bf77fb0edb8e801e4e429e26df8ffb61ed0

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

      Filesize

      315B

      MD5

      a34ac19f4afae63adc5d2f7bc970c07f

      SHA1

      a82190fc530c265aa40a045c21770d967f4767b8

      SHA256

      d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

      SHA512

      42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

    • memory/3120-17-0x00000000004E0000-0x00000000004E3000-memory.dmp

      Filesize

      12KB

    • memory/3120-19-0x00000000006C0000-0x00000000006C6000-memory.dmp

      Filesize

      24KB

    • memory/3120-25-0x00000000006A0000-0x00000000006A6000-memory.dmp

      Filesize

      24KB

    • memory/3264-0-0x0000000000450000-0x0000000000453000-memory.dmp

      Filesize

      12KB

    • memory/3264-1-0x0000000000670000-0x0000000000676000-memory.dmp

      Filesize

      24KB

    • memory/3264-2-0x0000000000670000-0x0000000000676000-memory.dmp

      Filesize

      24KB

    • memory/3264-3-0x0000000000690000-0x0000000000696000-memory.dmp

      Filesize

      24KB

    • memory/3264-26-0x0000000000450000-0x0000000000453000-memory.dmp

      Filesize

      12KB