Analysis

  • max time kernel
    12s
  • max time network
    150s
  • 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, 09:25

General

  • Target
    extension-fix-B1T36S.hta
  • Size 3KB
  • Sample260803-ldymtsfq2t
  • SHA256 94b0f4d9e198e8223b38ac89b8795c4cab7f0dcfe5be5421b4f0964cbbc3abdb
  • 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 9 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 24 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 8 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-B1T36S.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:1200
    • 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
      PID:3524
      • 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:4832
      • 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:5444
        • 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: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:4292
        • 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:4288
      • 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:1260
        • 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:3648
      • C:\Windows\SysWOW64\attrib.exe
        "C:\Windows\System32\attrib.exe" +h +s "C:\idhiofre\"
        2⤵
        • System Location Discovery: System Language Discovery
        • Views/modifies file attributes
        PID:4820
      • C:\idhiofre\idhiofre.exe
        "C:\idhiofre\idhiofre.exe" C:\idhiofre\idhiofre
        2⤵
          PID:3392
        • C:\Windows\SysWOW64\rundll32.exe
          "C:\Windows\System32\rundll32.exe" InetCpl.cpl,ClearMyTracksByProcess 8
          2⤵
            PID:6088
            • 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:960
            • 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:2900
              • 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:3888

          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 f9f8fee3b5efba86fe16d1fae18afae2d1e59bbba9587a054871bc78653e25fd
                • MD5 SHA1 SHA512 TLSH

                B46811C17859FFB409CF0E904A4AA8F8

                • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\B46811C17859FFB409CF0E904A4AA8F8
                • Size 170B
                • SHA256 b1f51846ff70ba1a0534dfb9f14da55231921627d409c6731aa38accadaab0c1
                • MD5 SHA1 SHA512 TLSH

                a1.zip

                • Path C:\idhiofre\a1.zip
                • Size 494KB
                • SHA256 c5b0534205199992470a9ba0854a580d79de3142bc92c35109c52b2fa9461535
                • MD5 SHA1 SHA512 SSDEEP TLSH

                a2.zip

                • Path C:\idhiofre\a2.zip
                • Size 1.3MB
                • SHA256 544ab296f3398aac77dc9c417eba755f4c3e78e8e298b653059f7d8570294323
                • MD5 SHA1 SHA512 SSDEEP TLSH

                a3.zip

                • Path C:\idhiofre\a3.zip
                • Size 2KB
                • SHA256 26fbeee660aeaa91b3bcf70217315ecd109f27570b9d1bd03fb2737deec60d01
                • MD5 SHA1 SHA512 TLSH

                idhiofre

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

                idhiofre.exe

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

                memory/3392-110-0x0000000000400000-0x00000000005C7000-memory.dmp