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Analysis

  • max time kernel
    143s
  • max time network
    156s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240226-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
  • submitted
    25/04/2024, 15:34

General

  • Target

    2024-04-25_bc8b1eecd565287772776e7d1ae6a320_cryptolocker.exe

  • Size

    96KB

  • MD5

    bc8b1eecd565287772776e7d1ae6a320

  • SHA1

    b757e94b1bd8d34856e216592eaf1de6a91784c8

  • SHA256

    7e7da5885a343d54128603cad73b2f2115f1a8e2dc931e92ba03fc931b622948

  • SHA512

    3e3a24e085a01ada3ef8ad120bf690c7d4afbfa47331183455391157254f5d3836cdc127c59b8246160c959c1a2142a959c8647cf8f30d99906120a12bd7bb7d

  • SSDEEP

    768:xQz7yVEhs9+4uR1bytOOtEvwDpjWfbZ7uyA36S7MpxRiWNa9mktJvj8+:xj+VGMOtEvwDpjubwQEIiVmkPL

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 1 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).

  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-04-25_bc8b1eecd565287772776e7d1ae6a320_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-04-25_bc8b1eecd565287772776e7d1ae6a320_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:3012
    • C:\Users\Admin\AppData\Local\Temp\misid.exe
      "C:\Users\Admin\AppData\Local\Temp\misid.exe"
      2⤵
      • Executes dropped EXE
      PID:2592
  • 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=1312 --field-trial-handle=2284,i,9807419199535700662,2319175108930815708,262144 --variations-seed-version /prefetch:8
    1⤵
      PID:2300

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

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    Downloads

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

      Filesize

      96KB

      MD5

      df59ab107d67a040876dfb4812bf4396

      SHA1

      891f91083325c42e438a1d3de42c7effdecbebbb

      SHA256

      bc220f69e539bcf3f63d4761df39b06095a63962ab45287220ea693ac731f6b5

      SHA512

      b24da5cd68855998146053b5ce9f5eb64db725b4145f5e3349f29419086008677f4fcbcb7953c65493a8bde73b096c2c98b0d9efa1c8a4ed80466397d7fdfff8

    • memory/2592-18-0x00000000004F0000-0x00000000004F6000-memory.dmp

      Filesize

      24KB

    • memory/2592-20-0x00000000004D0000-0x00000000004D6000-memory.dmp

      Filesize

      24KB

    • memory/2592-26-0x0000000000500000-0x0000000000510000-memory.dmp

      Filesize

      64KB

    • memory/3012-0-0x0000000000500000-0x0000000000510000-memory.dmp

      Filesize

      64KB

    • memory/3012-1-0x00000000006B0000-0x00000000006B6000-memory.dmp

      Filesize

      24KB

    • memory/3012-2-0x00000000006B0000-0x00000000006B6000-memory.dmp

      Filesize

      24KB

    • memory/3012-3-0x00000000006D0000-0x00000000006D6000-memory.dmp

      Filesize

      24KB

    • memory/3012-19-0x0000000000500000-0x0000000000510000-memory.dmp

      Filesize

      64KB