Analysis

  • max time kernel
    36s
  • max time network
    71s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260617-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260617-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    20/06/2026, 18:48

General

  • Target
    plikan.exe
  • Size 2.4MB
  • Sample260620-xf997agy8j
  • SHA256 66ed1a3ba95e7e55d74ff600cf62feb38704e2aa2b344d9ad08143d98383e22d
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Signatures

  • Creates new service(s) 2 TTPs
  • Modifies file permissions 1 TTPs 1 IoCs
  • Looks up external IP address via web service 3 IoCs

    Uses a legitimate IP lookup service to find the infected system's external IP.

  • Drops file in System32 directory 2 IoCs
  • Costura .NET executable packer 1 IoCs

    Costura packer aka Costura Fody, is an add-in for the .NET framework that embeds all external dependency .dll files as resources inside main executable.

  • Launches sc.exe 2 IoCs

    Sc.exe is a Windows utlilty to control services on the system.

  • Enumerates physical storage devices 1 TTPs

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

  • Runs net.exe
  • Scheduled Task/Job: Scheduled Task 1 TTPs 4 IoCs

    Schtasks is often used by malware for persistence or to perform post-infection execution.

  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\plikan.exe
    "C:\Users\Admin\AppData\Local\Temp\plikan.exe"
    1⤵
    • Drops file in System32 directory
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1428
    • C:\Windows\System32\icacls.exe
      "C:\Windows\System32\icacls.exe" "C:\Windows\System32\winlogon_fix.exe" /deny *S-1-1-0:(DE,DC,WDAC,WO,WD,AS)
      2⤵
      • Modifies file permissions
      PID:2492
    • C:\Windows\System32\winlogon_fix.exe
      "C:\Windows\System32\winlogon_fix.exe"
      2⤵
        PID:3348
        • C:\Windows\System32\schtasks.exe
          "C:\Windows\System32\schtasks.exe" /Create /F /TN "WinUpdate" /TR ""C:\Windows\System32\winlogon_fix.exe"" /SC ONLOGON /RL HIGHEST
          3⤵
          • Scheduled Task/Job: Scheduled Task
          PID:256
        • C:\Windows\System32\schtasks.exe
          "C:\Windows\System32\schtasks.exe" /Create /F /TN "WinCheck" /TR ""C:\Windows\System32\winlogon_fix.exe"" /SC HOURLY /RL HIGHEST
          3⤵
          • Scheduled Task/Job: Scheduled Task
          PID:248
        • C:\Windows\System32\schtasks.exe
          "C:\Windows\System32\schtasks.exe" /Create /F /TN "WinStartup" /TR ""C:\Windows\System32\winlogon_fix.exe"" /SC ONSTART /RL HIGHEST
          3⤵
          • Scheduled Task/Job: Scheduled Task
          PID:620
        • C:\Windows\System32\schtasks.exe
          "C:\Windows\System32\schtasks.exe" /Create /F /TN "WinIdle" /TR ""C:\Windows\System32\winlogon_fix.exe"" /SC ONIDLE /I 5 /RL HIGHEST
          3⤵
          • Scheduled Task/Job: Scheduled Task
          PID:3032
        • C:\Windows\System32\sc.exe
          "C:\Windows\System32\sc.exe" create WinDefSrv binPath= "C:\Windows\System32\winlogon_fix.exe" start= auto
          3⤵
          • Launches sc.exe
          PID:2956
        • C:\Windows\System32\sc.exe
          "C:\Windows\System32\sc.exe" create WinUpdSrv binPath= "C:\Windows\System32\winlogon_fix.exe" start= auto
          3⤵
          • Launches sc.exe
          PID:2920
        • C:\Windows\System32\winlogon_fix.exe
          "C:\Windows\System32\winlogon_fix.exe" "powershell.exe" -Command "Add-MpPreference -ExclusionExtension 'msi' -ErrorAction SilentlyContinue"
          3⤵
            PID:3716
          • C:\Windows\System32\winlogon_fix.exe
            "C:\Windows\System32\winlogon_fix.exe" "powershell.exe" -Command "Add-MpPreference -ExclusionExtension 'sys' -ErrorAction SilentlyContinue"
            3⤵
              PID:5088
            • C:\Windows\System32\winlogon_fix.exe
              "C:\Windows\System32\winlogon_fix.exe" "powershell.exe" -Command "Add-MpPreference -ExclusionExtension 'drv' -ErrorAction SilentlyContinue"
              3⤵
                PID:3500
              • C:\Windows\System32\winlogon_fix.exe
                "C:\Windows\System32\winlogon_fix.exe" "powershell.exe" -Command "Add-MpPreference -ExclusionExtension 'ocx' -ErrorAction SilentlyContinue"
                3⤵
                  PID:2948
                • C:\Windows\System32\winlogon_fix.exe
                  "C:\Windows\System32\winlogon_fix.exe" "powershell.exe" -Command "Add-MpPreference -ExclusionExtension 'cpl' -ErrorAction SilentlyContinue"
                  3⤵
                    PID:3064
                  • C:\Windows\System32\winlogon_fix.exe
                    "C:\Windows\System32\winlogon_fix.exe" "powershell.exe" -Command "Add-MpPreference -ExclusionExtension 'scr' -ErrorAction SilentlyContinue"
                    3⤵
                      PID:2888
                    • C:\Windows\System32\winlogon_fix.exe
                      "C:\Windows\System32\winlogon_fix.exe" "powershell.exe" -Command "Add-MpPreference -ExclusionExtension 'bat' -ErrorAction SilentlyContinue"
                      3⤵
                        PID:3160
                      • C:\Windows\System32\winlogon_fix.exe
                        "C:\Windows\System32\winlogon_fix.exe" "powershell.exe" -Command "Add-MpPreference -ExclusionExtension 'cmd' -ErrorAction SilentlyContinue"
                        3⤵
                          PID:5060
                        • C:\Windows\System32\winlogon_fix.exe
                          "C:\Windows\System32\winlogon_fix.exe" "powershell.exe" -Command "Add-MpPreference -ExclusionExtension 'com' -ErrorAction SilentlyContinue"
                          3⤵
                            PID:2704
                          • C:\Windows\System32\winlogon_fix.exe
                            "C:\Windows\System32\winlogon_fix.exe" "powershell.exe" -Command "Add-MpPreference -ExclusionExtension 'vbs' -ErrorAction SilentlyContinue"
                            3⤵
                              PID:5392
                            • C:\Windows\System32\winlogon_fix.exe
                              "C:\Windows\System32\winlogon_fix.exe" "powershell.exe" -Command "Add-MpPreference -ExclusionExtension 'vbe' -ErrorAction SilentlyContinue"
                              3⤵
                                PID:2176
                              • C:\Windows\System32\winlogon_fix.exe
                                "C:\Windows\System32\winlogon_fix.exe" "powershell.exe" -Command "Add-MpPreference -ExclusionExtension 'js' -ErrorAction SilentlyContinue"
                                3⤵
                                  PID:3456
                                • C:\Windows\System32\winlogon_fix.exe
                                  "C:\Windows\System32\winlogon_fix.exe" "powershell.exe" -Command "Add-MpPreference -ExclusionExtension 'jse' -ErrorAction SilentlyContinue"
                                  3⤵
                                    PID:5016
                                  • C:\Windows\System32\winlogon_fix.exe
                                    "C:\Windows\System32\winlogon_fix.exe" "powershell.exe" -Command "Add-MpPreference -ExclusionExtension 'wsf' -ErrorAction SilentlyContinue"
                                    3⤵
                                      PID:1688
                                    • C:\Windows\System32\winlogon_fix.exe
                                      "C:\Windows\System32\winlogon_fix.exe" "powershell.exe" -Command "Add-MpPreference -ExclusionExtension 'wsh' -ErrorAction SilentlyContinue"
                                      3⤵
                                        PID:5180
                                      • C:\Windows\System32\winlogon_fix.exe
                                        "C:\Windows\System32\winlogon_fix.exe" "powershell.exe" -Command "Add-MpPreference -ExclusionExtension 'php4' -ErrorAction SilentlyContinue"
                                        3⤵
                                          PID:3452
                                        • C:\Windows\System32\winlogon_fix.exe
                                          "C:\Windows\System32\winlogon_fix.exe" "powershell.exe" -Command "Add-MpPreference -ExclusionExtension 'php5' -ErrorAction SilentlyContinue"
                                          3⤵
                                            PID:3944
                                          • C:\Windows\System32\winlogon_fix.exe
                                            "C:\Windows\System32\winlogon_fix.exe" "powershell.exe" -Command "Add-MpPreference -ExclusionExtension 'phtml' -ErrorAction SilentlyContinue"
                                            3⤵
                                              PID:3368
                                            • C:\Windows\System32\winlogon_fix.exe
                                              "C:\Windows\System32\winlogon_fix.exe" "powershell.exe" -Command "Add-MpPreference -ExclusionExtension 'asp' -ErrorAction SilentlyContinue"
                                              3⤵
                                                PID:3288
                                              • C:\Windows\System32\winlogon_fix.exe
                                                "C:\Windows\System32\winlogon_fix.exe" "powershell.exe" -Command "Add-MpPreference -ExclusionExtension 'aspx' -ErrorAction SilentlyContinue"
                                                3⤵
                                                  PID:3764
                                                • C:\Windows\System32\winlogon_fix.exe
                                                  "C:\Windows\System32\winlogon_fix.exe" "powershell.exe" -Command "Add-MpPreference -ExclusionExtension 'ascx' -ErrorAction SilentlyContinue"
                                                  3⤵
                                                    PID:2692
                                                  • C:\Windows\System32\Wbem\wmic.exe
                                                    "wmic.exe" /namespace:\\root\Microsoft\Windows\Defender path MSFT_MpPreference call Add ExclusionPath='C:'
                                                    3⤵
                                                      PID:7528
                                                    • C:\Windows\System32\winlogon_fix.exe
                                                      "C:\Windows\System32\winlogon_fix.exe" "cmd.exe" /c powershell -Command "Add-MpPreference -ExclusionPath 'F:'"
                                                      3⤵
                                                        PID:1116
                                                      • C:\Windows\System32\netsh.exe
                                                        "C:\Windows\System32\netsh.exe" wlan disconnect
                                                        3⤵
                                                          PID:4400
                                                        • C:\Windows\System32\net.exe
                                                          "C:\Windows\System32\net.exe" stop WinHttpAutoProxySvc /y
                                                          3⤵
                                                            PID:9168
                                                      • C:\Windows\system32\userinit.exe
                                                        userinit.exe
                                                        1⤵
                                                          PID:7776
                                                        • C:\Windows\System32\winlogon_fix.exe
                                                          C:\Windows\System32\winlogon_fix.exe
                                                          1⤵
                                                            PID:7784

                                                          Network

                                                                MITRE ATT&CK Enterprise v16

                                                                Replay Monitor

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                                                                Downloads

                                                                zov_debug.log

                                                                • Path C:\Users\Admin\AppData\Local\Temp\zov_debug.log
                                                                • Size 1KB
                                                                • SHA256 b853021d0333beeed2acebfc63bbc772d574e615ab354ef978e7d05c43ef3796
                                                                • MD5 SHA1 SHA512 TLSH

                                                                zov_debug.log

                                                                • Path C:\Users\Admin\AppData\Local\Temp\zov_debug.log
                                                                • Size 20KB
                                                                • SHA256 c7b9569e5fbd77c1561df4074b3f61b59e457f4f80f0f0adc61a0464b6e686b7
                                                                • MD5 SHA1 SHA512 SSDEEP TLSH

                                                                zov_debug.log

                                                                • Path C:\Users\Admin\AppData\Local\Temp\zov_debug.log
                                                                • Size 1KB
                                                                • SHA256 8b84592231e163d588d0ca82191fa8a9b01f1efaf6fd8c582c9b7adefbe9ae2b
                                                                • MD5 SHA1 SHA512 TLSH

                                                                zov_debug.log

                                                                • Path C:\Users\Admin\AppData\Local\Temp\zov_debug.log
                                                                • Size 2KB
                                                                • SHA256 7c279bc0f30db506102fd2bb5a6b186a10c353e2c73290cfc725038de12e31d9
                                                                • MD5 SHA1 SHA512 TLSH

                                                                zov_debug.log

                                                                • Path C:\Users\Admin\AppData\Local\Temp\zov_debug.log
                                                                • Size 3KB
                                                                • SHA256 21640757d2849fbf355a2ec2af10b4ffcc1cecd40110917924bdf4c8f1958a75
                                                                • MD5 SHA1 SHA512 TLSH

                                                                zov_debug.log

                                                                • Path C:\Users\Admin\AppData\Local\Temp\zov_debug.log
                                                                • Size 4KB
                                                                • SHA256 4167463686142e5ded0e52c7aefd216cccc039baae7302412b47c3298ee8e840
                                                                • MD5 SHA1 SHA512 SSDEEP TLSH

                                                                winlogon_fix.exe

                                                                • Path C:\Windows\System32\winlogon_fix.exe
                                                                • Size 2.2MB
                                                                • SHA256 d0741508e8a7d84f190350a5be2f4aff5b3d8526cbabdaccc5299fd7d85be862
                                                                • MD5 SHA1 SHA512 SSDEEP TLSH

                                                                winlogon_fix.exe

                                                                • Path C:\Windows\System32\winlogon_fix.exe
                                                                • Size 2.2MB
                                                                • SHA256 bbc1d51564aa35a09fd67c5b8372f4c2c446cc997703678fb0ed9059987dda36
                                                                • MD5 SHA1 SHA512 SSDEEP TLSH

                                                                winlogon_fix.exe

                                                                • Path C:\Windows\System32\winlogon_fix.exe
                                                                • Size 2.3MB
                                                                • SHA256 9a4dd189d43eeb940fa9f5944eaac5fed4562f31899caf5020c8e42dfaabcd72
                                                                • MD5 SHA1 SHA512 SSDEEP TLSH

                                                                winlogon_fix.exe

                                                                • Path C:\Windows\System32\winlogon_fix.exe
                                                                • Size 2.4MB
                                                                • SHA256 66ed1a3ba95e7e55d74ff600cf62feb38704e2aa2b344d9ad08143d98383e22d
                                                                • MD5 SHA1 SHA512 SSDEEP TLSH

                                                                memory/1428-27-0x00007FF8C9710000-0x00007FF8CA0B4000-memory.dmp

                                                                memory/1428-42-0x00007FF8C9710000-0x00007FF8CA0B4000-memory.dmp

                                                                memory/1428-34-0x00007FF8C9710000-0x00007FF8CA0B4000-memory.dmp

                                                                memory/1428-33-0x0000028D5BC20000-0x0000028D5BC42000-memory.dmp

                                                                memory/1428-35-0x0000028D3D7E0000-0x0000028D3D7EA000-memory.dmp

                                                                memory/1428-36-0x0000028D5B900000-0x0000028D5B908000-memory.dmp

                                                                memory/1428-37-0x00007FF8C9710000-0x00007FF8CA0B4000-memory.dmp

                                                                memory/1428-38-0x00007FF8C9710000-0x00007FF8CA0B4000-memory.dmp

                                                                memory/1428-39-0x00007FF8C9710000-0x00007FF8CA0B4000-memory.dmp

                                                                memory/1428-40-0x00007FF8C9710000-0x00007FF8CA0B4000-memory.dmp

                                                                memory/1428-41-0x00007FF8C9710000-0x00007FF8CA0B4000-memory.dmp

                                                                memory/1428-30-0x0000028D5BB70000-0x0000028D5BC1A000-memory.dmp

                                                                memory/1428-43-0x00007FF8C9710000-0x00007FF8CA0B4000-memory.dmp

                                                                memory/1428-29-0x00007FF8C9710000-0x00007FF8CA0B4000-memory.dmp

                                                                memory/1428-28-0x00007FF8C9710000-0x00007FF8CA0B4000-memory.dmp

                                                                memory/1428-0-0x00007FF8C989F000-0x00007FF8C98A0000-memory.dmp

                                                                memory/1428-26-0x0000028D3D7C0000-0x0000028D3D7DA000-memory.dmp

                                                                memory/1428-85-0x00007FF8C9710000-0x00007FF8CA0B4000-memory.dmp

                                                                memory/1428-25-0x0000028D5B800000-0x0000028D5B85A000-memory.dmp

                                                                memory/1428-14-0x00007FF8C9710000-0x00007FF8CA0B4000-memory.dmp

                                                                memory/1428-13-0x00007FF8C9710000-0x00007FF8CA0B4000-memory.dmp

                                                                memory/1428-1-0x0000028D3B4F0000-0x0000028D3B756000-memory.dmp

                                                                memory/1428-2-0x00007FF8C9710000-0x00007FF8CA0B4000-memory.dmp