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Analysis

  • max time kernel
    141s
  • max time network
    154s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240226-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
  • submitted
    10/05/2024, 03:43

General

  • Target

    2024-05-10_52323354b98f7005bf2cafb42e133218_cryptolocker.exe

  • Size

    79KB

  • MD5

    52323354b98f7005bf2cafb42e133218

  • SHA1

    34a05ed55a7f6f0d7186417c7d7bde054eb074f9

  • SHA256

    03aa63579d2ba40766f3afe354e611c655662cb63f922120663f9ebe505047dc

  • SHA512

    52904781cb78c68ebfd2616d2b648f56a66aad4acd4051b7e74a48f9333c2e43fff11a6140aa679b158aa77927d326c39613e10d2dfc3b877a3adc165d4d9cf0

  • SSDEEP

    1536:ZzFbxmLPWQMOtEvwDpj386Sj/WprgJN6tZdOyJ3KEWT+G:ZVxkGOtEvwDpjcaxQ

Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 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 8 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-05-10_52323354b98f7005bf2cafb42e133218_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-05-10_52323354b98f7005bf2cafb42e133218_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:3080
    • 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:4824
  • 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=4324 --field-trial-handle=2284,i,9807419199535700662,2319175108930815708,262144 --variations-seed-version /prefetch:8
    1⤵
      PID:4784

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    Downloads

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

      Filesize

      79KB

      MD5

      ee92fefadd931cf72ed61ee88d2453ea

      SHA1

      506eab33443499faf99b1e4ae9110eda9a689e26

      SHA256

      1a3875e852fb78e5fa1260d9b4317860b2df5e606340d98ba911e3ca15307e4d

      SHA512

      cb4427c10e4d7b74739cfaed7ea3a440d4885f5a33773b6f6444395e969158e041d39387d60ecba07ea4384d9e4c1c4e6b3203c31712fd308f5957478132e29e

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

      Filesize

      315B

      MD5

      a34ac19f4afae63adc5d2f7bc970c07f

      SHA1

      a82190fc530c265aa40a045c21770d967f4767b8

      SHA256

      d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

      SHA512

      42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

    • memory/3080-0-0x00000000004E0000-0x00000000004E3000-memory.dmp

      Filesize

      12KB

    • memory/3080-1-0x0000000002300000-0x0000000002306000-memory.dmp

      Filesize

      24KB

    • memory/3080-2-0x0000000002300000-0x0000000002306000-memory.dmp

      Filesize

      24KB

    • memory/3080-3-0x00000000005F0000-0x00000000005F6000-memory.dmp

      Filesize

      24KB

    • memory/3080-26-0x00000000004E0000-0x00000000004E3000-memory.dmp

      Filesize

      12KB

    • memory/4824-17-0x00000000004E0000-0x00000000004E3000-memory.dmp

      Filesize

      12KB

    • memory/4824-19-0x0000000000640000-0x0000000000646000-memory.dmp

      Filesize

      24KB

    • memory/4824-20-0x0000000000660000-0x0000000000666000-memory.dmp

      Filesize

      24KB