Analysis

  • max time kernel
    10s
  • max time network
    136s
  • 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, 09:36

General

  • Target
    extension-fix-R27RJI.hta
  • Size 3KB
  • Sample260803-lkzhpswtbx
  • SHA256 1cffcd67d137f1f76e69f9e19ce1e2edf26f3d2d129df9e9301dfa73c53d836d
  • MD5 SHA1 SHA512 TLSH

Malware Config

Signatures

  • Badlisted process makes network request 3 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 1 IoCs

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

  • System Location Discovery: System Language Discovery 1 TTPs 10 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • 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 28 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 5 IoCs
  • Suspicious use of WriteProcessMemory 9 IoCs
  • Views/modifies file attributes 1 TTPs 1 IoCs

Processes

  • C:\Windows\SysWOW64\mshta.exe
    C:\Windows\SysWOW64\mshta.exe "C:\Users\Admin\AppData\Local\Temp\extension-fix-R27RJI.hta" {1E460BD7-F1C3-4B2E-88BF-4E770A288AF5}{1E460BD7-F1C3-4B2E-88BF-4E770A288AF5}
    1⤵
    • Badlisted process makes network request
    • System Location Discovery: System Language Discovery
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of WriteProcessMemory
    PID:3576
    • C:\Windows\SysWOW64\rundll32.exe
      "C:\Windows\System32\rundll32.exe" InetCpl.cpl,ClearMyTracksByProcess 8
      2⤵
      • System Location Discovery: System Language Discovery
      • Modifies Internet Explorer settings
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of WriteProcessMemory
      PID:6948
      • C:\Windows\SysWOW64\rundll32.exe
        C:\Windows\system32\rundll32.exe C:\Windows\system32\inetcpl.cpl,ClearMyTracksByProcess Flags:8 WinX:0 WinY:0 IEFrame:00000000
        3⤵
        • System Location Discovery: System Language Discovery
        • Modifies registry class
        PID:4708
    • C:\Windows\SysWOW64\rundll32.exe
      "C:\Windows\System32\rundll32.exe" InetCpl.cpl,ClearMyTracksByProcess 8
      2⤵
      • System Location Discovery: System Language Discovery
      • Modifies Internet Explorer settings
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of WriteProcessMemory
      PID:4768
      • C:\Windows\SysWOW64\rundll32.exe
        C:\Windows\system32\rundll32.exe C:\Windows\system32\inetcpl.cpl,ClearMyTracksByProcess Flags:8 WinX:0 WinY:0 IEFrame:00000000
        3⤵
        • System Location Discovery: System Language Discovery
        • Modifies registry class
        PID:832
    • C:\Windows\SysWOW64\rundll32.exe
      "C:\Windows\System32\rundll32.exe" InetCpl.cpl,ClearMyTracksByProcess 8
      2⤵
      • System Location Discovery: System Language Discovery
      • Modifies Internet Explorer settings
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of WriteProcessMemory
      PID:4376
      • C:\Windows\SysWOW64\rundll32.exe
        C:\Windows\system32\rundll32.exe C:\Windows\system32\inetcpl.cpl,ClearMyTracksByProcess Flags:8 WinX:0 WinY:0 IEFrame:00000000
        3⤵
        • System Location Discovery: System Language Discovery
        • Modifies registry class
        PID:6920
    • C:\Windows\SysWOW64\rundll32.exe
      "C:\Windows\System32\rundll32.exe" InetCpl.cpl,ClearMyTracksByProcess 8
      2⤵
      • System Location Discovery: System Language Discovery
      • Modifies Internet Explorer settings
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of WriteProcessMemory
      PID:4608
      • C:\Windows\SysWOW64\rundll32.exe
        C:\Windows\system32\rundll32.exe C:\Windows\system32\inetcpl.cpl,ClearMyTracksByProcess Flags:8 WinX:0 WinY:0 IEFrame:00000000
        3⤵
        • System Location Discovery: System Language Discovery
        • Modifies registry class
        PID:5820
    • C:\Windows\SysWOW64\attrib.exe
      "C:\Windows\System32\attrib.exe" +h +s "C:\tkwppqin\"
      2⤵
      • System Location Discovery: System Language Discovery
      • Views/modifies file attributes
      PID:3272
    • C:\tkwppqin\tkwppqin.exe
      "C:\tkwppqin\tkwppqin.exe" C:\tkwppqin\tkwppqin
      2⤵
        PID:6744
      • C:\Windows\SysWOW64\rundll32.exe
        "C:\Windows\System32\rundll32.exe" InetCpl.cpl,ClearMyTracksByProcess 8
        2⤵
          PID:6736
          • C:\Windows\SysWOW64\rundll32.exe
            C:\Windows\system32\rundll32.exe C:\Windows\system32\inetcpl.cpl,ClearMyTracksByProcess Flags:8 WinX:0 WinY:0 IEFrame:00000000
            3⤵
              PID:4588
          • C:\Windows\SysWOW64\cmd.exe
            "C:\Windows\System32\cmd.exe" /c ping -n 300 -w 1000 127.0.0.1 >nul
            2⤵
            • Executes a command shell one-liner
            • System Network Configuration Discovery: Internet Connection Discovery
            PID:7116
            • C:\Windows\SysWOW64\PING.EXE
              ping -n 300 -w 1000 127.0.0.1
              3⤵
              • System Network Configuration Discovery: Internet Connection Discovery
              • Runs ping.exe
              PID:5876

        Network

              MITRE ATT&CK Enterprise v16

              Replay Monitor

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              Downloads

              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

              8B2B9A00839EED1DFDCCC3BFC2F5DF12

              • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\8B2B9A00839EED1DFDCCC3BFC2F5DF12
              • Size 174B
              • SHA256 691d8e4b0ffb0384539b1c9d2bf6bae0f7c2cb0c06361f6ef4e968debdd20075
              • MD5 SHA1 SHA512 TLSH

              B46811C17859FFB409CF0E904A4AA8F8

              • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\B46811C17859FFB409CF0E904A4AA8F8
              • Size 170B
              • SHA256 677a156481112d0d84a30163d83e7750cbce4b38c46f2b748fe7fb60cc0b6240
              • MD5 SHA1 SHA512 TLSH

              a1.zip

              • Path C:\tkwppqin\a1.zip
              • Size 494KB
              • SHA256 1917132c369616f307505539a8b9bef8d414afd6c9a6abb89adda5fad8471ccc
              • MD5 SHA1 SHA512 SSDEEP TLSH

              a2.zip

              • Path C:\tkwppqin\a2.zip
              • Size 1.3MB
              • SHA256 35360ab619806402176315e39bc2e12e5fc243573afd000eddd54c10c67e4088
              • MD5 SHA1 SHA512 SSDEEP TLSH

              a3.zip

              • Path C:\tkwppqin\a3.zip
              • Size 2KB
              • SHA256 5080cebe648e787fda1f43a625065bfe0f5b87f5e1cece56ee41745ef36d7b91
              • MD5 SHA1 SHA512 TLSH

              tkwppqin

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

              tkwppqin.exe

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

              memory/6744-110-0x0000000000400000-0x00000000005C7000-memory.dmp