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Analysis

  • max time kernel
    142s
  • 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
    19/03/2024, 01:15

General

  • Target

    2024-03-19_ddebbb2bed88cc53d60a66bf5f8d2b98_cryptolocker.exe

  • Size

    128KB

  • MD5

    ddebbb2bed88cc53d60a66bf5f8d2b98

  • SHA1

    00ad85636f231d6c14a82588d0e0843fe7ea8aeb

  • SHA256

    54c18d5a7f392c20acf9744b8b991e64ce14b8545c1027e513a151d1cce6b2ad

  • SHA512

    3a852a10e86b926ce919357b06708bb05fd2a5ec0537456be32176b6f12c8e835a34726aecaf70f953d231416996189422252127260bb055fee6eaf17375eddc

  • SSDEEP

    1536:vj+jsMQMOtEvwDpj5HwYYTjipvF2hBfIuBKLUYOVbvh//fRG:vCjsIOtEvwDpj5H9YvQd2RG

Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 1 IoCs
  • Detection of Cryptolocker Samples 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 6 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-03-19_ddebbb2bed88cc53d60a66bf5f8d2b98_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-03-19_ddebbb2bed88cc53d60a66bf5f8d2b98_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:4168
    • 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:1604
  • 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=4080 --field-trial-handle=2252,i,16504368816373493055,9578615028378602855,262144 --variations-seed-version /prefetch:8
    1⤵
      PID:3352

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    Downloads

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

      Filesize

      129KB

      MD5

      e24e258d752ead733c6e514ae5b2bc2d

      SHA1

      721c04e48c7164e0873f1d1ff901b83492420021

      SHA256

      1f2e6b1283bcb7ccad41a039610f67f62f5b90874083b7b6f03629bc7d307425

      SHA512

      caf9800f6218be75d484c44b15df6845037ebef239b68e0a4653bde92b7161db1f9537da27890509f6625ee50609f435d890014444be194bce5cbf38c23a7838

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

      Filesize

      315B

      MD5

      a34ac19f4afae63adc5d2f7bc970c07f

      SHA1

      a82190fc530c265aa40a045c21770d967f4767b8

      SHA256

      d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

      SHA512

      42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

    • memory/1604-18-0x0000000000650000-0x0000000000656000-memory.dmp

      Filesize

      24KB

    • memory/1604-17-0x0000000000620000-0x0000000000626000-memory.dmp

      Filesize

      24KB

    • memory/4168-0-0x00000000004D0000-0x00000000004D6000-memory.dmp

      Filesize

      24KB

    • memory/4168-1-0x00000000004D0000-0x00000000004D6000-memory.dmp

      Filesize

      24KB

    • memory/4168-2-0x00000000004F0000-0x00000000004F6000-memory.dmp

      Filesize

      24KB