Analysis

  • max time kernel
    415s
  • max time network
    443s
  • platform
    windows11-21h2_x64
  • resource
    win11-20250207-en
  • resource tags

    arch:x64arch:x86image:win11-20250207-enlocale:en-usos:windows11-21h2-x64system
  • submitted
    09-02-2025 15:25

General

  • Target

    windows.zip

  • Size

    406.3MB

  • MD5

    04658cf203835d56e03e19b21a669ad6

  • SHA1

    53de0846c62b10f781936e909fa29796daaee7b4

  • SHA256

    30178e750e73839e5c1d60aeecab63d1c1d9059da0be19c7745f28ba06f35869

  • SHA512

    3ff24f0f1ccb18a4c8ccd23471879a9ba9be23c4ea0832c7c9b42cc5aaaa8e667be9aa6252f01de35674c345f7766bcda5a1352f9aa8d3b7e621dbfbaa8d4b42

  • SSDEEP

    12582912:anPlyqUMyEufTqGCZU/TgwrF24zmm0+E9SrKzPB4hL:4P8qUMyZfTqRfF4h0+koKzg

Malware Config

Signatures

  • Downloads MZ/PE file 1 IoCs
  • Event Triggered Execution: Component Object Model Hijacking 1 TTPs

    Adversaries may establish persistence by executing malicious content triggered by hijacked references to Component Object Model (COM) objects.

  • Modifies system executable filetype association 2 TTPs 2 IoCs
  • System Location Discovery: System Language Discovery 1 TTPs 2 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • System Network Configuration Discovery: Internet Connection Discovery 1 TTPs 1 IoCs

    Adversaries may check for Internet connectivity on compromised systems.

  • Checks processor information in registry 2 TTPs 2 IoCs

    Processor information is often read in order to detect sandboxing environments.

  • Modifies Internet Explorer settings 1 TTPs 2 IoCs
  • Modifies registry class 64 IoCs
  • Suspicious behavior: AddClipboardFormatListener 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of FindShellTrayWindow 3 IoCs
  • Suspicious use of SendNotifyMessage 3 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs

Processes

  • C:\Windows\Explorer.exe
    C:\Windows\Explorer.exe /idlist,,C:\Users\Admin\AppData\Local\Temp\windows.zip
    1⤵
      PID:3544
    • C:\Program Files (x86)\Microsoft\EdgeUpdate\MicrosoftEdgeUpdate.exe
      "C:\Program Files (x86)\Microsoft\EdgeUpdate\MicrosoftEdgeUpdate.exe" /ping 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-PG9lbSBwcm9kdWN0X21hbnVmYWN0dXJlcj0iIiBwcm9kdWN0X25hbWU9IiIvPjxleHAgZXRhZz0iJnF1b3Q7RSt4YkF6Nlk2c1UxMjg5YlM2cWw0VlJMYmtqZkJVR1RNSnNqckhyNDRpST0mcXVvdDsiLz48YXBwIGFwcGlkPSJ7OEE2OUQzNDUtRDU2NC00NjNjLUFGRjEtQTY5RDlFNTMwRjk2fSIgdmVyc2lvbj0iMTIzLjAuNjMxMi4xMjMiIG5leHR2ZXJzaW9uPSIiIGxhbmc9ImVuIiBicmFuZD0iR0dMUyIgY2xpZW50PSIiIGluc3RhbGxhZ2U9IjEiIGluc3RhbGxkYXRldGltZT0iMTczODk1NDk2OSIgb29iZV9pbnN0YWxsX3RpbWU9IjEzMzgzNDI3NjY5NTc5MDAwMCI-PGV2ZW50IGV2ZW50dHlwZT0iMzEiIGV2ZW50cmVzdWx0PSIxIiBlcnJvcmNvZGU9IjAiIGV4dHJhY29kZTE9IjIxNzk4NjIiIHN5c3RlbV91cHRpbWVfdGlja3M9IjQ4MzUxMzkxNTciLz48L2FwcD48L3JlcXVlc3Q-
      1⤵
      • System Location Discovery: System Language Discovery
      • System Network Configuration Discovery: Internet Connection Discovery
      PID:1988
    • C:\Windows\System32\rundll32.exe
      C:\Windows\System32\rundll32.exe C:\Windows\System32\shell32.dll,SHCreateLocalServerRunDll {9aa46009-3ce0-458a-a354-715610a075e6} -Embedding
      1⤵
        PID:1532
      • C:\Windows\system32\BackgroundTransferHost.exe
        "BackgroundTransferHost.exe" -ServerName:BackgroundTransferHost.13
        1⤵
          PID:4064
        • C:\Users\Admin\AppData\Local\Microsoft\OneDrive\OneDrive.exe
          "C:\Users\Admin\AppData\Local\Microsoft\OneDrive\OneDrive.exe"
          1⤵
          • Modifies system executable filetype association
          • System Location Discovery: System Language Discovery
          • Checks processor information in registry
          • Modifies Internet Explorer settings
          • Modifies registry class
          • Suspicious behavior: AddClipboardFormatListener
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of FindShellTrayWindow
          • Suspicious use of SendNotifyMessage
          • Suspicious use of SetWindowsHookEx
          PID:4056
        • C:\Windows\system32\svchost.exe
          C:\Windows\system32\svchost.exe -k LocalService -p -s fdPHost
          1⤵
            PID:2900

          Network

          MITRE ATT&CK Enterprise v15

          Replay Monitor

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          Downloads

          • C:\Users\Admin\AppData\Local\Packages\MicrosoftWindows.Client.CBS_cw5n1h2txyewy\AC\BackgroundTransferApi\1cb2b5ef-1518-4bdd-953e-425b91016f62.down_data

            Filesize

            521KB

            MD5

            c9d293a6b8bbf69557514f3939a456cf

            SHA1

            0aec45075565c8539c734e768cef9469047ac2e0

            SHA256

            8e80ec1e37c6079c5340a834501a919fdc5475d06c348e58077493dbc3f9512a

            SHA512

            6fd79a2f2dd73331334cc9fb98307bdedb765dfd2bd31adf76adfc52e20386d8a4d9823f10d777381caea220127d390e7b56e908b1d197a3a4dd3ff0a288be22