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Analysis

  • max time kernel
    148s
  • max time network
    152s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240226-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
  • submitted
    11/05/2024, 05:03

General

  • Target

    2024-05-11_a725142ac29fa797384dfcceaaed9a89_cryptolocker.exe

  • Size

    42KB

  • MD5

    a725142ac29fa797384dfcceaaed9a89

  • SHA1

    73c8068fbbfb7481df490c33c168660fdcf40857

  • SHA256

    ea17b7e4566feb76e0a5a7e3aa07b75ffe4c8d9c40617fb66d57c23a0af4d3e2

  • SHA512

    7fd9ffdb43b91c1e03a6782262274c808f6e6742190eca9a6442a50a94cd8195921cf529918648c0a72f91e53b1dabbcf2aee81b200aec2f8fb8247eacbf1482

  • SSDEEP

    768:6Qz7yVEhs9+4OR7tOOtEvwDpjLHqh6/aDN:6j+1NMOtEvwDpjrRy

Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 4 IoCs
  • Detection of Cryptolocker Samples 4 IoCs
  • Detects executables built or packed with MPress PE compressor 4 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 6 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-05-11_a725142ac29fa797384dfcceaaed9a89_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-05-11_a725142ac29fa797384dfcceaaed9a89_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:4812
    • 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:3528
  • 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=4160 --field-trial-handle=2304,i,6987730730348465820,3913273227385401271,262144 --variations-seed-version /prefetch:8
    1⤵
      PID:2692

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    Downloads

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

      Filesize

      43KB

      MD5

      ca9d4c952ce9084b4422bc263e8f8f32

      SHA1

      cc43992d934dac3846ed11ee7a2dbbe45472bd6b

      SHA256

      eff54dc60751bca83b3073404f2d7f62ee99f3ecdfbf11fcb97f05e5a8f54b9b

      SHA512

      41fec97d5a98908d184cebc80a4847279fc3b22fbfe70bad20bd8e37f6f8218cf439b700023c6a94c8b992a008e65fcf61deed8f1bb3daf7c30a28fca55fa223

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

      Filesize

      315B

      MD5

      a34ac19f4afae63adc5d2f7bc970c07f

      SHA1

      a82190fc530c265aa40a045c21770d967f4767b8

      SHA256

      d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

      SHA512

      42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

    • memory/3528-18-0x00000000004F0000-0x00000000004F6000-memory.dmp

      Filesize

      24KB

    • memory/3528-24-0x00000000004D0000-0x00000000004D6000-memory.dmp

      Filesize

      24KB

    • memory/3528-48-0x0000000000500000-0x000000000050F000-memory.dmp

      Filesize

      60KB

    • memory/4812-0-0x0000000000500000-0x000000000050F000-memory.dmp

      Filesize

      60KB

    • memory/4812-1-0x0000000002210000-0x0000000002216000-memory.dmp

      Filesize

      24KB

    • memory/4812-2-0x0000000002210000-0x0000000002216000-memory.dmp

      Filesize

      24KB

    • memory/4812-3-0x0000000002240000-0x0000000002246000-memory.dmp

      Filesize

      24KB

    • memory/4812-25-0x0000000000500000-0x000000000050F000-memory.dmp

      Filesize

      60KB