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Analysis

  • max time kernel
    141s
  • max time network
    151s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240226-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
  • submitted
    30/05/2024, 23:31

General

  • Target

    2024-05-30_d871504c8612c3e5ae00fca6969e8454_cryptolocker.exe

  • Size

    38KB

  • MD5

    d871504c8612c3e5ae00fca6969e8454

  • SHA1

    57f08ad78cafd273afd15d1d8f804b60fdc9b9a3

  • SHA256

    55b53a3adb57d35b8369a5b8e43847b07f5afa243d138f50214ffb55f21f0805

  • SHA512

    4457146afb3bcdaa6a107ac021c060047d7b05c313d319d41a0f0d272aec96a4edb914e923156ff69fb81d6b1e4aca4e52f40bdcedf9187df672870ba0401a56

  • SSDEEP

    768:fTz7y3lhsT+hs1SQtOOtEvwDpjfAu9+4+:fT+hsMQMOtEvwDpjoIH+

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\2024-05-30_d871504c8612c3e5ae00fca6969e8454_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-05-30_d871504c8612c3e5ae00fca6969e8454_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:3696
    • 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:780
  • 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=4088 --field-trial-handle=3088,i,14310325015283915034,7660943942870463106,262144 --variations-seed-version /prefetch:8
    1⤵
      PID:3292

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    Downloads

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

      Filesize

      38KB

      MD5

      151eba09983b2bc9a8e54c3bcc9bffb3

      SHA1

      7b047d6a8498dd766f0ebe5281982562c38a0c8a

      SHA256

      326f92c947366c749a436060008f84b2b4bc15af1f15419db105b085bf0b9034

      SHA512

      5ab8f7b90c301097ad3068096059bfdc45d6977f3756d9c8ded01d50c1bd97a31ac810e53c29d94b8155eaba15e61f86690c66b8ecf0766838996028382a954f

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

      Filesize

      315B

      MD5

      a34ac19f4afae63adc5d2f7bc970c07f

      SHA1

      a82190fc530c265aa40a045c21770d967f4767b8

      SHA256

      d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

      SHA512

      42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

    • memory/780-17-0x00000000006A0000-0x00000000006A6000-memory.dmp

      Filesize

      24KB

    • memory/780-18-0x00000000006C0000-0x00000000006C6000-memory.dmp

      Filesize

      24KB

    • memory/3696-0-0x00000000005F0000-0x00000000005F6000-memory.dmp

      Filesize

      24KB

    • memory/3696-1-0x00000000005F0000-0x00000000005F6000-memory.dmp

      Filesize

      24KB

    • memory/3696-2-0x0000000000610000-0x0000000000616000-memory.dmp

      Filesize

      24KB