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Analysis

  • max time kernel
    137s
  • max time network
    149s
  • 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, 02:55

General

  • Target

    2024-05-10_60838f40eac5ea2ba6d36e64797bdf8d_cryptolocker.exe

  • Size

    50KB

  • MD5

    60838f40eac5ea2ba6d36e64797bdf8d

  • SHA1

    ed982e113dedf97d075f85b5877b5e82a5b44ce8

  • SHA256

    3cf552d5e55d46f64468149ba01ee30da79d8e9e23dfe63c558f04809a804e97

  • SHA512

    e962d171fcc18e345302beadf68da2e89ce7a118d6faef38c336ae380556a28b1a91756fd455cd33c0b88527654e8fa7cc0a237bb5eaec3bbb756c37a8dfab88

  • SSDEEP

    768:X6LsoEEeegiZPvEhHSG+gp/QtOOtEvwDpjBaaEqbIu55id3AMWZYY:X6QFElP6n+gJQMOtEvwDpjB0GIWiWLiY

Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 1 IoCs
  • Detection of Cryptolocker Samples 1 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\2024-05-10_60838f40eac5ea2ba6d36e64797bdf8d_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-05-10_60838f40eac5ea2ba6d36e64797bdf8d_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:4452
    • C:\Users\Admin\AppData\Local\Temp\asih.exe
      "C:\Users\Admin\AppData\Local\Temp\asih.exe"
      2⤵
      • Executes dropped EXE
      PID:4220
  • 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=5164 --field-trial-handle=3084,i,4016110471176367543,14287608422419064331,262144 --variations-seed-version /prefetch:8
    1⤵
      PID:4284

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    Downloads

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

      Filesize

      50KB

      MD5

      a5e5a0f2ff0ce3597068e8543c115324

      SHA1

      59437955b5501b6150f7d57fd2e71d42b5ad46d3

      SHA256

      9953b80bd5b79d01b51daf19bed842846326434f3d4d1f2080f43fd94aea196a

      SHA512

      7694444f48e8ed4ee5ad8eff1256627278185b0254fc0b981ea2bd4768216fe791675cf041c11edc4cea24326df482b2f83b81a78bf42a0b7aabbacb39f62610

    • memory/4220-17-0x0000000000510000-0x0000000000516000-memory.dmp

      Filesize

      24KB

    • memory/4220-23-0x00000000004E0000-0x00000000004E6000-memory.dmp

      Filesize

      24KB

    • memory/4452-0-0x00000000005A0000-0x00000000005A6000-memory.dmp

      Filesize

      24KB

    • memory/4452-1-0x00000000005A0000-0x00000000005A6000-memory.dmp

      Filesize

      24KB

    • memory/4452-2-0x0000000002230000-0x0000000002236000-memory.dmp

      Filesize

      24KB