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Analysis

  • max time kernel
    142s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240226-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
  • submitted
    12/05/2024, 14:45

General

  • Target

    2024-05-12_ad6baf9540b66a3b988f1008372ba552_cryptolocker.exe

  • Size

    48KB

  • MD5

    ad6baf9540b66a3b988f1008372ba552

  • SHA1

    2be6fbdd9d6c2d2162dfd2d82f3a34907cdb6a54

  • SHA256

    408471ad72b75e098ac49d6182fb865c75479efd62888caaf289df626524e6ef

  • SHA512

    e38dae8792f7be9c2f32b5d105cd83adcbd24bb688031ccbb402d29cd14ddf41425150a30bc294925be862363ebd95a2bf3ad27830f12f4a5ae3efda2f9a211f

  • SSDEEP

    384:icX+ni9VCr5nQI021q4VQBqURYp055TOtOOtEvwDpjqIGR/hHi7/OlI0G/BdmRS+:XS5nQJ24LR1bytOOtEvwDpjNbP/bm9

Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 4 IoCs
  • Detection of Cryptolocker Samples 2 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 8 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-05-12_ad6baf9540b66a3b988f1008372ba552_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-05-12_ad6baf9540b66a3b988f1008372ba552_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:1572
    • 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:4232
  • 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=4036 --field-trial-handle=2248,i,10247514684337323751,15511974759131734137,262144 --variations-seed-version /prefetch:8
    1⤵
      PID:5040

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    Downloads

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

      Filesize

      48KB

      MD5

      265eba6ddd9e6182dd3ec8d4d9bd8389

      SHA1

      2f633d274cdec805924b32f8dac4a49bbac17693

      SHA256

      a781537cd1987e6bd47cb1a9a0054e182b8beb536d8903e83d2e174d3313b930

      SHA512

      1646ffe5ff0fa14e1c82a90c34abce19625a92712eb3a0d79664afb6bd052af3cde4226c25f4619b3f29daf003984136cd4c2c7d9bb542b6e73533a614f0e12b

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

      Filesize

      315B

      MD5

      a34ac19f4afae63adc5d2f7bc970c07f

      SHA1

      a82190fc530c265aa40a045c21770d967f4767b8

      SHA256

      d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

      SHA512

      42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

    • memory/1572-0-0x0000000000500000-0x000000000050F000-memory.dmp

      Filesize

      60KB

    • memory/1572-1-0x00000000005E0000-0x00000000005E6000-memory.dmp

      Filesize

      24KB

    • memory/1572-2-0x00000000005E0000-0x00000000005E6000-memory.dmp

      Filesize

      24KB

    • memory/1572-3-0x0000000000600000-0x0000000000606000-memory.dmp

      Filesize

      24KB

    • memory/1572-14-0x0000000000500000-0x000000000050F000-memory.dmp

      Filesize

      60KB

    • memory/4232-25-0x00000000006C0000-0x00000000006C6000-memory.dmp

      Filesize

      24KB

    • memory/4232-19-0x00000000006E0000-0x00000000006E6000-memory.dmp

      Filesize

      24KB

    • memory/4232-49-0x0000000000500000-0x000000000050F000-memory.dmp

      Filesize

      60KB