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Analysis

  • max time kernel
    145s
  • max time network
    153s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240226-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
  • submitted
    09/05/2024, 20:24

General

  • Target

    2024-05-09_3042696e30608a27beae9522dea2a2b6_cryptolocker.exe

  • Size

    68KB

  • MD5

    3042696e30608a27beae9522dea2a2b6

  • SHA1

    302071c513bf13d71a834c43b42a13720bcc8257

  • SHA256

    ec556b654a240b7b256cb9a8ae785963fd232e18e6c48e896272984eca847d4f

  • SHA512

    75c368ecc0344840272a7fd759f730d18cef3295fa1cb789e979158e272b73aed6a5a8a11c9484980200b4c3c774f597209db700ca6510c123796744a30c6b9f

  • SSDEEP

    1536:o1KhxqwtdgI2MyzNORQtOflIwoHNV2XBFV72BOlA7ZszudnYTjipvF293vaRLEZ:aq7tdgI2MyzNORQtOflIwoHNV2XBFV7h

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).

  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-05-09_3042696e30608a27beae9522dea2a2b6_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-05-09_3042696e30608a27beae9522dea2a2b6_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:4400
    • C:\Users\Admin\AppData\Local\Temp\hurok.exe
      "C:\Users\Admin\AppData\Local\Temp\hurok.exe"
      2⤵
      • Checks computer location settings
      • Executes dropped EXE
      PID:1132
  • 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=3696 --field-trial-handle=2256,i,6670388345726423024,18382795228658886258,262144 --variations-seed-version /prefetch:8
    1⤵
      PID:1972

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    Downloads

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

      Filesize

      68KB

      MD5

      5d0bcb4e844cb46ba469ce074ced48c9

      SHA1

      9b77646caaefc4c983621e95c1382020e05a8f32

      SHA256

      464a1b783d6c73ae57f0a21b2b697b66ac97b0fe93d3003e1764fe32b6018e74

      SHA512

      7bfb185c4ca59e05190336cac00711c06c66ce92d7309e6302e9be20728e8e3a5be3d7faafb55ee6607411d7924b3856926df8650c5a253d091eb76a68d52c7d

    • memory/1132-18-0x0000000001F40000-0x0000000001F46000-memory.dmp

      Filesize

      24KB

    • memory/4400-0-0x0000000000560000-0x0000000000566000-memory.dmp

      Filesize

      24KB

    • memory/4400-1-0x0000000000560000-0x0000000000566000-memory.dmp

      Filesize

      24KB

    • memory/4400-2-0x0000000000400000-0x0000000000406000-memory.dmp

      Filesize

      24KB