Analysis

  • max time kernel
    150s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260911-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260911-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    17/10/2026, 00:26

General

  • Target
    iTaxViewer-Pro.exe
  • Size 2.6MB
  • Sample261017-arpfjayz2p
  • SHA256 f5d2603fa53db87dc3b5a666a1e8603a3a8842198bf2858afac5f9d3419243c6
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Signatures

  • Modifies security service 2 TTPs 1 IoCs
  • Checks computer location settings 2 TTPs 2 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Executes dropped EXE 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Reads the TCP/IP host and domain name from the registry 1 TTPs 12 IoCs

    The configured hostname and DNS domain identify the machine and are commonly collected to profile a host before it reports in.

  • System Location Discovery: System Language Discovery 1 TTPs 23 IoCs

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

  • Inno Setup is an open-source installation builder for Windows applications. 2 IoCs

    Inno Setup installer

  • Kills process with taskkill 15 IoCs
  • Modifies Control Panel 12 IoCs
  • Modifies Internet Explorer settings 1 TTPs 18 IoCs
  • Modifies data under HKEY_USERS 11 IoCs
  • Suspicious behavior: EnumeratesProcesses 24 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of WriteProcessMemory 22 IoCs
  • System policy modification 1 TTPs 6 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\iTaxViewer-Pro.exe
    "C:\Users\Admin\AppData\Local\Temp\iTaxViewer-Pro.exe"
    1⤵
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:5432
    • C:\Users\Admin\AppData\Local\Temp\is-09OQR.tmp\iTaxViewer-Pro.tmp
      "C:\Users\Admin\AppData\Local\Temp\is-09OQR.tmp\iTaxViewer-Pro.tmp" /SL5="$400AC,2282797,239616,C:\Users\Admin\AppData\Local\Temp\iTaxViewer-Pro.exe"
      2⤵
      • Modifies security service
      • Checks computer location settings
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      • Modifies Control Panel
      • Modifies Internet Explorer settings
      • Modifies data under HKEY_USERS
      • Suspicious use of WriteProcessMemory
      • System policy modification
      PID:2504
      • C:\Windows\SysWOW64\taskkill.exe
        "C:\Windows\System32\taskkill.exe" /f /im Nca_v4_certd.exe
        3⤵
        • System Location Discovery: System Language Discovery
        • Kills process with taskkill
        • Suspicious use of AdjustPrivilegeToken
        PID:1388
      • C:\Windows\SysWOW64\taskkill.exe
        "C:\Windows\System32\taskkill.exe" /f /im Nca_v4.exe
        3⤵
        • System Location Discovery: System Language Discovery
        • Kills process with taskkill
        • Suspicious use of AdjustPrivilegeToken
        PID:3548
      • C:\Windows\SysWOW64\taskkill.exe
        "C:\Windows\System32\taskkill.exe" /f /im iexplore.exe
        3⤵
        • System Location Discovery: System Language Discovery
        • Kills process with taskkill
        • Suspicious use of AdjustPrivilegeToken
        PID:6012
      • C:\Windows\SysWOW64\taskkill.exe
        "C:\Windows\System32\taskkill.exe" /f /im WinDone.exe
        3⤵
        • System Location Discovery: System Language Discovery
        • Kills process with taskkill
        • Suspicious use of AdjustPrivilegeToken
        PID:5936
      • C:\Windows\SysWOW64\taskkill.exe
        "C:\Windows\System32\taskkill.exe" /f /im WinSys.exe
        3⤵
        • System Location Discovery: System Language Discovery
        • Kills process with taskkill
        • Suspicious use of AdjustPrivilegeToken
        PID:1104
      • C:\Windows\SysWOW64\taskkill.exe
        "C:\Windows\System32\taskkill.exe" /f /im Xseo.exe
        3⤵
        • System Location Discovery: System Language Discovery
        • Kills process with taskkill
        • Suspicious use of AdjustPrivilegeToken
        PID:2500
      • C:\Windows\SysWOW64\taskkill.exe
        "C:\Windows\System32\taskkill.exe" /f /im PFS.QTT2012.TOOLNHAP.exe
        3⤵
        • System Location Discovery: System Language Discovery
        • Kills process with taskkill
        • Suspicious use of AdjustPrivilegeToken
        PID:2108
      • C:\Windows\SysWOW64\taskkill.exe
        "C:\Windows\System32\taskkill.exe" /f /im PFS.QTT2012.TOOLNHAPDKT2009.exe
        3⤵
        • System Location Discovery: System Language Discovery
        • Kills process with taskkill
        PID:1860
      • C:\Windows\SysWOW64\taskkill.exe
        "C:\Windows\System32\taskkill.exe" /f /im java.exe
        3⤵
        • System Location Discovery: System Language Discovery
        • Kills process with taskkill
        • Suspicious use of AdjustPrivilegeToken
        PID:5900
      • C:\Windows\SysWOW64\taskkill.exe
        "C:\Windows\System32\taskkill.exe" /f /im javaw.exe
        3⤵
        • System Location Discovery: System Language Discovery
        • Kills process with taskkill
        PID:5592
      • C:\Windows\SysWOW64\taskkill.exe
        "C:\Windows\System32\taskkill.exe" /f /im jp2launcher.exe
        3⤵
        • System Location Discovery: System Language Discovery
        • Kills process with taskkill
        PID:1152
      • C:\Windows\SysWOW64\taskkill.exe
        "C:\Windows\System32\taskkill.exe" /f /im jusched.exe
        3⤵
        • System Location Discovery: System Language Discovery
        • Kills process with taskkill
        PID:1740
      • C:\Windows\SysWOW64\taskkill.exe
        "C:\Windows\System32\taskkill.exe" /f /im jucheck.exe
        3⤵
        • System Location Discovery: System Language Discovery
        • Kills process with taskkill
        PID:5028
      • C:\Windows\SysWOW64\taskkill.exe
        "C:\Windows\System32\taskkill.exe" /f /im jaureg.exe
        3⤵
        • System Location Discovery: System Language Discovery
        • Kills process with taskkill
        PID:2728
      • C:\Windows\SysWOW64\taskkill.exe
        "C:\Windows\System32\taskkill.exe" /f /im jqs.exe
        3⤵
        • System Location Discovery: System Language Discovery
        • Kills process with taskkill
        PID:3636
      • C:\Windows\SysWOW64\wbem\WMIC.exe
        "C:\Windows\System32\wbem\WMIC.exe" process where "name like '%java%'" delete
        3⤵
        • Reads the TCP/IP host and domain name from the registry
        • System Location Discovery: System Language Discovery
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:5792
      • C:\Windows\SysWOW64\wbem\WMIC.exe
        "C:\Windows\System32\wbem\WMIC.exe" process where "name like '%jp2%'" delete
        3⤵
        • Reads the TCP/IP host and domain name from the registry
        • System Location Discovery: System Language Discovery
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:5104
      • C:\Windows\SysWOW64\wbem\WMIC.exe
        "C:\Windows\System32\wbem\WMIC.exe" process where "name like '%nca%'" delete
        3⤵
        • Reads the TCP/IP host and domain name from the registry
        • System Location Discovery: System Language Discovery
        • Suspicious behavior: EnumeratesProcesses
        PID:2884
      • C:\Windows\SysWOW64\wbem\WMIC.exe
        "C:\Windows\System32\wbem\WMIC.exe" process where "name like '%jusched%'" delete
        3⤵
        • Reads the TCP/IP host and domain name from the registry
        • System Location Discovery: System Language Discovery
        • Suspicious behavior: EnumeratesProcesses
        PID:5072
      • C:\Windows\SysWOW64\wbem\WMIC.exe
        "C:\Windows\System32\wbem\WMIC.exe" process where "name like '%jucheck%'" delete
        3⤵
        • Reads the TCP/IP host and domain name from the registry
        • System Location Discovery: System Language Discovery
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:1376
      • C:\Windows\SysWOW64\wbem\WMIC.exe
        "C:\Windows\System32\wbem\WMIC.exe" process where "name like '%LCS-CA%'" delete
        3⤵
        • Reads the TCP/IP host and domain name from the registry
        • System Location Discovery: System Language Discovery
        • Suspicious behavior: EnumeratesProcesses
        PID:6016

Network

        MITRE ATT&CK Enterprise v16

        Replay Monitor

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        Downloads

        iTaxViewer-Pro.tmp

        • Path C:\Users\Admin\AppData\Local\Temp\is-09OQR.tmp\iTaxViewer-Pro.tmp
        • Size 1.2MB
        • SHA256 07fb1e53313514062c7e30baf932819a5847c01a7b835a60e70f145e1057e327
        • MD5 SHA1 SHA512 SSDEEP TLSH

        memory/2504-6-0x0000000002320000-0x0000000002321000-memory.dmp

        memory/2504-8-0x0000000002320000-0x0000000002321000-memory.dmp

        memory/2504-10-0x0000000000400000-0x000000000054A000-memory.dmp

        memory/5432-0-0x0000000000400000-0x0000000000444000-memory.dmp

        memory/5432-9-0x0000000000400000-0x0000000000444000-memory.dmp