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
    26/04/2024, 04:44

General

  • Target

    2024-04-26_635a4b7a6522727705bc276265093af1_cryptolocker.exe

  • Size

    48KB

  • MD5

    635a4b7a6522727705bc276265093af1

  • SHA1

    40fc9e87e5eb3780eff14325426a7c02c0484719

  • SHA256

    264c74e0a84130f9990cd5f794fb323f630f2f761d87dc510d22e79203f37da7

  • SHA512

    3c4ceced6c5de789c9277f360298d38e0fe161e863fe2b6dcccafeed4352857a0eb1f92dfe52d42aa4b3a054737b4ba2f60380b00fa45cb31752ec07cb5570fe

  • SSDEEP

    768:qmOKYQDf5XdrDmjr5tOOtEvwDpjAajFEitQbDmoSQCVUBJUkQqAHBIG05W2Mo2pK:qmbhXDmjr5MOtEvwDpj5cDtKkQZQ7

Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 5 IoCs
  • Detection of Cryptolocker Samples 2 IoCs
  • UPX dump on OEP (original entry point) 5 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\2024-04-26_635a4b7a6522727705bc276265093af1_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-04-26_635a4b7a6522727705bc276265093af1_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:4028
    • C:\Users\Admin\AppData\Local\Temp\asih.exe
      "C:\Users\Admin\AppData\Local\Temp\asih.exe"
      2⤵
      • Executes dropped EXE
      PID:4196
  • 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=3996 --field-trial-handle=3084,i,4016110471176367543,14287608422419064331,262144 --variations-seed-version /prefetch:8
    1⤵
      PID:1272

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    Downloads

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

      Filesize

      48KB

      MD5

      0235785a191deb10e28272770a75aaa1

      SHA1

      298bd71d52edcbafda19aa526e45eb7f0d089875

      SHA256

      8a381ed729e8a79483160f5c66b60fe775ae772b9cbd9667a4ca8034c21f4bf2

      SHA512

      6acdee5a80795fef83e93e29a6ea7dcea384aba37ad21a312fb2d6ddc232cb50ddc4e3993b645b141aa781217d96df46c81086e50d3804646893573bb76c7f7e

    • memory/4028-0-0x0000000000500000-0x0000000000510000-memory.dmp

      Filesize

      64KB

    • memory/4028-1-0x0000000002140000-0x0000000002146000-memory.dmp

      Filesize

      24KB

    • memory/4028-2-0x0000000002140000-0x0000000002146000-memory.dmp

      Filesize

      24KB

    • memory/4028-3-0x0000000002050000-0x0000000002056000-memory.dmp

      Filesize

      24KB

    • memory/4028-21-0x0000000000500000-0x0000000000510000-memory.dmp

      Filesize

      64KB

    • memory/4196-17-0x0000000000500000-0x0000000000510000-memory.dmp

      Filesize

      64KB

    • memory/4196-19-0x00000000020F0000-0x00000000020F6000-memory.dmp

      Filesize

      24KB

    • memory/4196-20-0x00000000006B0000-0x00000000006B6000-memory.dmp

      Filesize

      24KB

    • memory/4196-27-0x0000000000500000-0x0000000000510000-memory.dmp

      Filesize

      64KB