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Analysis

  • max time kernel
    142s
  • 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
    14/05/2024, 00:25

General

  • Target

    2024-05-14_46e1e94b511a86e34cc5ada618061363_cryptolocker.exe

  • Size

    59KB

  • MD5

    46e1e94b511a86e34cc5ada618061363

  • SHA1

    a17a2b989eb7b63b04c991355c62247275d12a12

  • SHA256

    f3affa4af6e0b5f8b1754f50efaa4dc47ed620d3aae783c9897327018f2bc12c

  • SHA512

    ace453844ddc8b9b14e6440cbfc25f6b8e72fe042e4bbcd297591237b247b5a33b18a4b144cc9a1f9bdcf921fa0ee470ba0318a4a7e33e44ddb601e78c230a96

  • SSDEEP

    768:H6LsoEEeegiZPvEhHSG+gk5NQXtckstOOtEvwDpjhBaD3TUogs/VXpAP6pJ:H6QFElP6n+gou9cvMOtEvwDpjCpVXH

Score
9/10
upx

Malware Config

Signatures

  • Detection of CryptoLocker Variants 4 IoCs
  • Detection of Cryptolocker Samples 4 IoCs
  • UPX dump on OEP (original entry point) 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
  • UPX packed file 4 IoCs

    Detects executables packed with UPX/modified UPX open source packer.

  • 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\2024-05-14_46e1e94b511a86e34cc5ada618061363_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-05-14_46e1e94b511a86e34cc5ada618061363_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:1140
    • C:\Users\Admin\AppData\Local\Temp\asih.exe
      "C:\Users\Admin\AppData\Local\Temp\asih.exe"
      2⤵
      • Executes dropped EXE
      PID:4008
  • 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=4064 --field-trial-handle=2356,i,13261194862334667799,7441241219475888176,262144 --variations-seed-version /prefetch:8
    1⤵
      PID:3856

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    Downloads

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

      Filesize

      59KB

      MD5

      5102d428898da7b1adf6122be1cd37e3

      SHA1

      8e0e5603d292a5a4aeb2162cf6ace5fea7e2282a

      SHA256

      b3011805b8cca682abfe10febfb572b199170666950f89a58561fb70fdd36a36

      SHA512

      22e1ef6ed1ebd4cfcd0e2f17515f2579158a3103b86979268c4008c1ed75a57f97779db0c80259b5ce9498a8bf42b9f6b899a87d68cba7e99b5445cae4f9f515

    • memory/1140-0-0x0000000000500000-0x0000000000510000-memory.dmp

      Filesize

      64KB

    • memory/1140-1-0x00000000004D0000-0x00000000004D6000-memory.dmp

      Filesize

      24KB

    • memory/1140-2-0x00000000004D0000-0x00000000004D6000-memory.dmp

      Filesize

      24KB

    • memory/1140-3-0x00000000004F0000-0x00000000004F6000-memory.dmp

      Filesize

      24KB

    • memory/1140-24-0x0000000000500000-0x0000000000510000-memory.dmp

      Filesize

      64KB

    • memory/4008-25-0x0000000000500000-0x0000000000510000-memory.dmp

      Filesize

      64KB