RegSvcs.exe
- File Path:
C:\WINDOWS\Microsoft.NET\Framework64\v4.0.30319\RegSvcs.exe - Description: Microsoft .NET Services Installation Utility
- Comments: Flavor=Retail
Hashes
| Type | Hash |
|---|---|
| MD5 | 1584EBF1F8E089B8DF6BFC165A194D96 |
| SHA1 | 3C16D770327859588F2A4D9436F7E36CC42EF376 |
| SHA256 | CC2688FBA4D9D023D485CABC2900BB8D4BB7C585ACE5C878500FFBE5DAD3C016 |
| SHA384 | 60EB30A65C6077DABD1FC7FF82F36BA9648D0C793A13BCA7CACA72F9FB0248BA5D92390E0BE169D0107FEBE437C00AED |
| SHA512 | E82C0583040098678F80853117526BF97309BDED3E4A0FB4EC10400F3F3901FD2B857FFC95BCE3732E876907FF8F288BC0A21B368A49B47C6A59C14BDD0B187C |
| SSDEEP | 768:CBbSoy+SNIBf0k2ds9NO6Iq8YkhkzWtn3h:FoeIBf0dds9NdChk6tnx |
| PESHA1 | 7403830913307597A0E336F3A5EC4DB463ACEBF3 |
| PE256 | CDFA5308319704A644AC169B9211A8F7018DAF563D71DE4DB588448F99226F38 |
Runtime Data
Usage (stdout):
Microsoft (R) .NET Framework Services Installation Utility Version 4.8.4161.0
Copyright (C) Microsoft Corporation. All rights reserved.
Invalid option: '--help'
USAGE: regsvcs.exe [options] AssemblyName
Options:
/? or /help Display this usage message.
/fc Find or create target application (default).
/c Create target application, error if it already exists.
/exapp Expect an existing application.
/tlb:<tlbfile> Filename for the exported type library.
/appname:<name> Use the specified name for the target application.
/parname:<name> Use the specified name or id for the target partition.
/extlb Use an existing type library.
/reconfig Reconfigure existing target application (default).
/noreconfig Don't reconfigure existing target application.
/u Uninstall target application.
/nologo Suppress logo output.
/quiet Suppress logo output and success output.
/componly Configure components only, no methods or interfaces.
/appdir:<path> Set application root directory to specified path.
Loaded Modules:
| Path |
|---|
| C:\WINDOWS\Microsoft.NET\Framework64\v4.0.30319\RegSvcs.exe |
| C:\WINDOWS\System32\KERNEL32.dll |
| C:\WINDOWS\System32\KERNELBASE.dll |
| C:\WINDOWS\SYSTEM32\MSCOREE.DLL |
| C:\WINDOWS\SYSTEM32\ntdll.dll |
Signature
- Status: Signature verified.
- Serial:
33000002ED2C45E4C145CF48440000000002ED - Thumbprint:
312860D2047EB81F8F58C29FF19ECDB4C634CF6A - Issuer: CN=Microsoft Windows Production PCA 2011, O=Microsoft Corporation, L=Redmond, S=Washington, C=US
- Subject: CN=Microsoft Windows, O=Microsoft Corporation, L=Redmond, S=Washington, C=US
File Metadata
- Original Filename: RegSvcs.exe
- Product Name: Microsoft .NET Framework
- Company Name: Microsoft Corporation
- File Version: 4.8.4161.0 built by: NET48REL1
- Product Version: 4.8.4161.0
- Language: English (United States)
- Legal Copyright: Microsoft Corporation. All rights reserved.
- Machine Type: 64-bit
File Scan
- VirusTotal Detections: 0/74
- VirusTotal Link: https://www.virustotal.com/gui/file/cc2688fba4d9d023d485cabc2900bb8d4bb7c585ace5c878500ffbe5dad3c016/detection
File Similarity (ssdeep match)
| File | Score |
|---|---|
| C:\WINDOWS\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe | 66 |
| C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe | 63 |
| C:\Windows\Microsoft.NET\Framework64\v4.0.30319\RegSvcs.exe | 65 |
Possible Misuse
The following table contains possible examples of RegSvcs.exe being misused. While RegSvcs.exe is not inherently malicious, its legitimate functionality can be abused for malicious purposes.
| Source | Source File | Example | License |
|---|---|---|---|
| sigma | image_load_suspicious_dbghelp_dbgcore_load.yml | - '\regsvcs.exe' |
DRL 1.0 |
| sigma | proc_creation_win_bad_opsec_sacrificial_processes.yml | - https://docs.microsoft.com/en-us/dotnet/framework/tools/regsvcs-exe-net-services-installation-tool#feedback |
DRL 1.0 |
| sigma | proc_creation_win_bad_opsec_sacrificial_processes.yml | Image\|endswith: '\regsvcs.exe' |
DRL 1.0 |
| sigma | proc_creation_win_bad_opsec_sacrificial_processes.yml | CommandLine\|endswith: '\regsvcs.exe' |
DRL 1.0 |
| sigma | proc_creation_win_possible_applocker_bypass.yml | - '\regsvcs.exe' |
DRL 1.0 |
| LOLBAS | Regasm.yml | - Link: https://pentestlab.blog/2017/05/19/applocker-bypass-regasm-and-regsvcs/ |
|
| LOLBAS | Regsvcs.yml | Name: Regsvcs.exe |
|
| LOLBAS | Regsvcs.yml | Description: Regsvcs and Regasm are Windows command-line utilities that are used to register .NET Component Object Model (COM) assemblies |
|
| LOLBAS | Regsvcs.yml | - Command: regsvcs.exe AllTheThingsx64.dll |
|
| LOLBAS | Regsvcs.yml | - Path: C:\Windows\System32\regsvcs.exe |
|
| LOLBAS | Regsvcs.yml | - Path: C:\Windows\SysWOW64\regsvcs.exe |
|
| LOLBAS | Regsvcs.yml | - Link: https://pentestlab.blog/2017/05/19/applocker-bypass-regasm-and-regsvcs/ |
|
| atomic-red-team | index.md | - T1218.009 Regsvcs/Regasm | MIT License. © 2018 Red Canary |
| atomic-red-team | index.md | - Atomic Test #2: Regsvcs Uninstall Method Call Test [windows] | MIT License. © 2018 Red Canary |
| atomic-red-team | windows-index.md | - T1218.009 Regsvcs/Regasm | MIT License. © 2018 Red Canary |
| atomic-red-team | windows-index.md | - Atomic Test #2: Regsvcs Uninstall Method Call Test [windows] | MIT License. © 2018 Red Canary |
| atomic-red-team | matrix.md | | | | | | Regsvcs/Regasm | | | | | | | | | MIT License. © 2018 Red Canary |
| atomic-red-team | windows-matrix.md | | | | | | Regsvcs/Regasm | | | | | | | | | MIT License. © 2018 Red Canary |
| atomic-red-team | T1218.009.md | # T1218.009 - Regsvcs/Regasm | MIT License. © 2018 Red Canary |
| atomic-red-team | T1218.009.md | <blockquote>Adversaries may abuse Regsvcs and Regasm to proxy execution of code through a trusted Windows utility. Regsvcs and Regasm are Windows command-line utilities that are used to register .NET Component Object Model (COM) assemblies. Both are digitally signed by Microsoft. (Citation: MSDN Regsvcs) (Citation: MSDN Regasm) | MIT License. © 2018 Red Canary |
| atomic-red-team | T1218.009.md | Both utilities may be used to bypass application control through use of attributes within the binary to specify code that should be run before registration or unregistration: [ComRegisterFunction] or [ComUnregisterFunction] respectively. The code with the registration and unregistration attributes will be executed even if the process is run under insufficient privileges and fails to execute. (Citation: LOLBAS Regsvcs)(Citation: LOLBAS Regasm)</blockquote> |
MIT License. © 2018 Red Canary |
| atomic-red-team | T1218.009.md | - Atomic Test #2 - Regsvcs Uninstall Method Call Test | MIT License. © 2018 Red Canary |
| atomic-red-team | T1218.009.md | ## Atomic Test #2 - Regsvcs Uninstall Method Call Test | MIT License. © 2018 Red Canary |
| atomic-red-team | T1218.009.md | C:\Windows\Microsoft.NET\Framework\v4.0.30319\regsvcs.exe #{output_file} | MIT License. © 2018 Red Canary |
MIT License. Copyright (c) 2020-2021 Strontic.