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Analysis

  • max time kernel
    138s
  • max time network
    145s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240226-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
  • submitted
    28/04/2024, 04:50

General

  • Target

    2024-04-28_cea9f77b191407d33f04e64ac72dadd4_cryptolocker.exe

  • Size

    61KB

  • MD5

    cea9f77b191407d33f04e64ac72dadd4

  • SHA1

    743c993fdad9b518329dd46c562dd671babbff32

  • SHA256

    f39a8de5977fa0ce317e72f84102b7186a6bd46c1b00d6e90d8cf93d375457f2

  • SHA512

    27a8a5dda8fd2feb7c90ca644c1e6fc2c6a966bda82d6ab740a0a3e0767ebc2a976c9e5044d4397024f0fb0a250bd9984265d66f06540a9df0b7e0518599c377

  • SSDEEP

    1536:ZzFbxmLPWQMOtEvwDpj386Sj/WprgJN6tZdOyJT/Equ:ZVxkGOtEvwDpjcOY

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\2024-04-28_cea9f77b191407d33f04e64ac72dadd4_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-04-28_cea9f77b191407d33f04e64ac72dadd4_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:4028
    • 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:4196
  • 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=3084,i,4016110471176367543,14287608422419064331,262144 --variations-seed-version /prefetch:8
    1⤵
      PID:2696

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    Downloads

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

      Filesize

      61KB

      MD5

      7a42bb29b3bb64967f5af892662a8fbf

      SHA1

      3f6c50449221833207de59b3f57c3c1ee5caeec0

      SHA256

      5ba5f102481947d95a4c334ec1a95314a92755527b94d8d2e37cca0d05dea154

      SHA512

      90b6062182c03a2e020140196b9e47a27b5b078ee87b90b93390cc2692cb3b16bd446d7a5ffb493f02269a1008e51bf5580437dbb671d26706786f71d2c0dffb

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

      Filesize

      315B

      MD5

      a34ac19f4afae63adc5d2f7bc970c07f

      SHA1

      a82190fc530c265aa40a045c21770d967f4767b8

      SHA256

      d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

      SHA512

      42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

    • memory/4028-0-0x00000000004A0000-0x00000000004A3000-memory.dmp

      Filesize

      12KB

    • memory/4028-1-0x00000000004D0000-0x00000000004D6000-memory.dmp

      Filesize

      24KB

    • memory/4028-2-0x00000000004D0000-0x00000000004D6000-memory.dmp

      Filesize

      24KB

    • memory/4028-3-0x00000000004F0000-0x00000000004F6000-memory.dmp

      Filesize

      24KB

    • memory/4028-25-0x00000000004A0000-0x00000000004A3000-memory.dmp

      Filesize

      12KB

    • memory/4196-17-0x00000000004D0000-0x00000000004D6000-memory.dmp

      Filesize

      24KB