| File name: | vs_BuildTools.exe |
| Full analysis: | https://app.any.run/tasks/e1d98c40-88b9-4213-9693-4384482ef4aa |
| Verdict: | Malicious activity |
| Analysis date: | September 06, 2024, 18:10:25 |
| OS: | Windows 10 Professional (build: 19045, 64 bit) |
| Tags: | |
| Indicators: | |
| MIME: | application/x-dosexec |
| File info: | PE32 executable (GUI) Intel 80386, for MS Windows |
| MD5: | E95EA545D65944F3FE4462DC69312694 |
| SHA1: | 6796279839C01946CB4B800D92D5355AA7C1C73D |
| SHA256: | 751FC7138FACFE9A7D846945E4643FB592562964C2A3A4C6336B192D61913F5A |
| SSDEEP: | 98304:OgxB3Dupa9JcAx30hoS4bMdqKR+km8IwyBPkH7XJCWBfVhDLcQJ5K6DRu4FiIepk:UAvqdhidyn |
MALICIOUS
No malicious indicators.SUSPICIOUS
Starts a Microsoft application from unusual location
- vs_BuildTools.exe (PID: 5916)
Process drops legitimate windows executable
- vs_BuildTools.exe (PID: 5916)
- vs_setup_bootstrapper.exe (PID: 5700)
Reads security settings of Internet Explorer
- vs_BuildTools.exe (PID: 5916)
- vs_setup_bootstrapper.exe (PID: 5700)
- setup.exe (PID: 5732)
Executable content was dropped or overwritten
- vs_BuildTools.exe (PID: 5916)
- vs_setup_bootstrapper.exe (PID: 5700)
The process drops C-runtime libraries
- vs_setup_bootstrapper.exe (PID: 5700)
The process creates files with name similar to system file names
- vs_setup_bootstrapper.exe (PID: 5700)
Found regular expressions for crypto-addresses (YARA)
- vs_setup_bootstrapper.exe (PID: 5700)
Creates a software uninstall entry
- vs_installer.windows.exe (PID: 6480)
Searches for installed software
- vs_installer.windows.exe (PID: 6480)
INFO
Process checks computer location settings
- vs_BuildTools.exe (PID: 5916)
The process uses the downloaded file
- vs_BuildTools.exe (PID: 5916)
- setup.exe (PID: 5732)
Checks supported languages
- vs_BuildTools.exe (PID: 5916)
- vs_setup_bootstrapper.exe (PID: 5700)
- setup.exe (PID: 5732)
- vs_installer.windows.exe (PID: 6480)
Reads the machine GUID from the registry
- vs_BuildTools.exe (PID: 5916)
- vs_setup_bootstrapper.exe (PID: 5700)
- setup.exe (PID: 5732)
Reads the computer name
- vs_BuildTools.exe (PID: 5916)
- vs_setup_bootstrapper.exe (PID: 5700)
- setup.exe (PID: 5732)
- vs_installer.windows.exe (PID: 6480)
Create files in a temporary directory
- vs_BuildTools.exe (PID: 5916)
- vs_setup_bootstrapper.exe (PID: 5700)
- setup.exe (PID: 5732)
Creates files in the program directory
- vs_setup_bootstrapper.exe (PID: 5700)
- setup.exe (PID: 5732)
Displays MAC addresses of computer network adapters
- getmac.exe (PID: 5532)
Disables trace logs
- vs_setup_bootstrapper.exe (PID: 5700)
- setup.exe (PID: 5732)
Checks proxy server information
- vs_setup_bootstrapper.exe (PID: 5700)
- setup.exe (PID: 5732)
Reads CPU info
- vs_setup_bootstrapper.exe (PID: 5700)
- setup.exe (PID: 5732)
Reads the software policy settings
- vs_setup_bootstrapper.exe (PID: 5700)
- setup.exe (PID: 5732)
Creates files or folders in the user directory
- vs_setup_bootstrapper.exe (PID: 5700)
- setup.exe (PID: 5732)
Reads Environment values
- setup.exe (PID: 5732)
Find more information about signature artifacts and mapping to MITRE ATT&CK™ MATRIX at the full report
TRiD
| .exe | | | Win32 Executable (generic) (52.9) |
|---|---|---|
| .exe | | | Generic Win/DOS Executable (23.5) |
| .exe | | | DOS Executable Generic (23.5) |
EXIF
EXE
| MachineType: | Intel 386 or later, and compatibles |
|---|---|
| TimeStamp: | 2024:08:19 23:47:27+00:00 |
| ImageFileCharacteristics: | Executable, Large address aware, 32-bit |
| PEType: | PE32 |
| LinkerVersion: | 14.16 |
| CodeSize: | 227328 |
| InitializedDataSize: | 199680 |
| UninitializedDataSize: | - |
| EntryPoint: | 0x1dfd0 |
| OSVersion: | 5.1 |
| ImageVersion: | 10 |
| SubsystemVersion: | 6 |
| Subsystem: | Windows GUI |
| FileVersionNumber: | 17.11.35222.181 |
| ProductVersionNumber: | 17.11.35222.181 |
| FileFlagsMask: | 0x003f |
| FileFlags: | (none) |
| FileOS: | Win32 |
| ObjectFileType: | Executable application |
| FileSubtype: | - |
| LanguageCode: | English (U.S.) |
| CharacterSet: | Unicode |
| CompanyName: | Microsoft Corporation |
| FileDescription: | Visual Studio Installer |
| FileVersion: | 17.11.35222.181 |
| InternalName: | vs_buildtools.exe |
| OriginalFileName: | vs_buildtools.exe |
| ProductName: | Microsoft Visual Studio BuildTools |
| ProductVersion: | Visual Studio 2022 |
| LegalCopyright: | © Microsoft Corporation. All rights reserved. |
Total processes
137
Monitored processes
7
Malicious processes
3
Suspicious processes
1
Behavior graph
Click at the process to see the details
Process information
PID | CMD | Path | Indicators | Parent process | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2768 | \??\C:\WINDOWS\system32\conhost.exe 0xffffffff -ForceV1 | C:\Windows\System32\conhost.exe | — | vs_installer.windows.exe | |||||||||||
User: admin Company: Microsoft Corporation Integrity Level: HIGH Description: Console Window Host Exit code: 0 Version: 10.0.19041.1 (WinBuild.160101.0800) Modules
| |||||||||||||||
| 5124 | \??\C:\WINDOWS\system32\conhost.exe 0xffffffff -ForceV1 | C:\Windows\System32\conhost.exe | — | getmac.exe | |||||||||||
User: admin Company: Microsoft Corporation Integrity Level: HIGH Description: Console Window Host Exit code: 0 Version: 10.0.19041.1 (WinBuild.160101.0800) Modules
| |||||||||||||||
| 5532 | "getmac" | C:\Windows\SysWOW64\getmac.exe | — | vs_setup_bootstrapper.exe | |||||||||||
User: admin Company: Microsoft Corporation Integrity Level: HIGH Description: Displays NIC MAC information Exit code: 0 Version: 10.0.19041.1 (WinBuild.160101.0800) Modules
| |||||||||||||||
| 5700 | "C:\Users\admin\AppData\Local\Temp\ed61ad5a2bb1f997d129dbb8ef2a\vs_bootstrapper_d15\vs_setup_bootstrapper.exe" --env "_SFX_CAB_EXE_PACKAGE:C:\Users\admin\AppData\Local\Temp\vs_BuildTools.exe _SFX_CAB_EXE_ORIGINALWORKINGDIR:C:\Users\admin\AppData\Local\Temp" | C:\Users\admin\AppData\Local\Temp\ed61ad5a2bb1f997d129dbb8ef2a\vs_bootstrapper_d15\vs_setup_bootstrapper.exe | vs_BuildTools.exe | ||||||||||||
User: admin Company: Microsoft Integrity Level: HIGH Description: Visual Studio Installer Version: 3.11.2180.21897 Modules
| |||||||||||||||
| 5732 | "C:\Program Files (x86)\Microsoft Visual Studio\Installer\setup.exe" /finalizeInstall install --in "C:\ProgramData\Microsoft\VisualStudio\Packages\_bootstrapper\vs_setup_bootstrapper_202409061810390627.json" --locale en-US --activityId "05a3b5c4-58cd-447d-b39e-e183741f5196" --pipe "3c114f84-07ea-4b58-8ecd-c12b5a90f8a2" | C:\Program Files (x86)\Microsoft Visual Studio\Installer\setup.exe | vs_setup_bootstrapper.exe | ||||||||||||
User: admin Company: Microsoft Integrity Level: HIGH Description: Visual Studio Installer Version: 3.11.2180.21897 Modules
| |||||||||||||||
| 5916 | "C:\Users\admin\AppData\Local\Temp\vs_BuildTools.exe" | C:\Users\admin\AppData\Local\Temp\vs_BuildTools.exe | explorer.exe | ||||||||||||
User: admin Company: Microsoft Corporation Integrity Level: MEDIUM Description: Visual Studio Installer Version: 17.11.35222.181 Modules
| |||||||||||||||
| 6480 | "C:\Program Files (x86)\Microsoft Visual Studio\Installer\vs_installer.windows.exe" /finalizeinstall 6F320B93-EE3C-4826-85E0-ADF79F8D4C61 "Visual Studio Installer" "Microsoft Visual Studio Installer" 3.11.2180.21897 0 "C:\Program Files (x86)\Microsoft Visual Studio\Installer\setup.exe" | C:\Program Files (x86)\Microsoft Visual Studio\Installer\vs_installer.windows.exe | — | setup.exe | |||||||||||
User: admin Company: Microsoft Integrity Level: HIGH Description: Microsoft.VisualStudio.Installer.Windows Exit code: 0 Version: 3.11.2180.21897 Modules
| |||||||||||||||
Total events
11 279
Read events
11 148
Write events
130
Delete events
1
Modification events
| (PID) Process: | (5700) vs_setup_bootstrapper.exe | Key: | HKEY_CURRENT_USER\SOFTWARE\Microsoft\VisualStudio\Telemetry |
| Operation: | write | Name: | UseCollector |
Value: 0 | |||
| (PID) Process: | (5700) vs_setup_bootstrapper.exe | Key: | HKEY_CURRENT_USER\SOFTWARE\Microsoft\VisualStudio\Telemetry\Default\v2 |
| Operation: | write | Name: | UseCollector |
Value: 0 | |||
| (PID) Process: | (5700) vs_setup_bootstrapper.exe | Key: | HKEY_CURRENT_USER\SOFTWARE\Microsoft\DeveloperTools |
| Operation: | write | Name: | deviceid |
Value: 0f1dcb50-d220-4895-886d-108ccde843e8 | |||
| (PID) Process: | (5700) vs_setup_bootstrapper.exe | Key: | HKEY_CURRENT_USER\SOFTWARE\Microsoft\DeveloperTools\HardwareCache |
| Operation: | write | Name: | Uuid |
Value: 1d1fb0bb-21b9-4fc0-b017-a4dada231e17 | |||
| (PID) Process: | (5700) vs_setup_bootstrapper.exe | Key: | HKEY_CURRENT_USER\SOFTWARE\Microsoft\DeveloperTools\HardwareCache |
| Operation: | write | Name: | MachineGuid |
Value: bb926e54-e3ca-40fd-ae90-2764341e7792 | |||
| (PID) Process: | (5700) vs_setup_bootstrapper.exe | Key: | HKEY_CURRENT_USER\SOFTWARE\Microsoft\DeveloperTools\HardwareCache |
| Operation: | write | Name: | HardDriveSerialNumber |
Value: qm00001 | |||
| (PID) Process: | (5700) vs_setup_bootstrapper.exe | Key: | HKEY_LOCAL_MACHINE\SOFTWARE\WOW6432Node\Microsoft\Tracing\vs_setup_bootstrapper_RASAPI32 |
| Operation: | write | Name: | EnableFileTracing |
Value: 0 | |||
| (PID) Process: | (5700) vs_setup_bootstrapper.exe | Key: | HKEY_LOCAL_MACHINE\SOFTWARE\WOW6432Node\Microsoft\Tracing\vs_setup_bootstrapper_RASAPI32 |
| Operation: | write | Name: | EnableAutoFileTracing |
Value: 0 | |||
| (PID) Process: | (5700) vs_setup_bootstrapper.exe | Key: | HKEY_LOCAL_MACHINE\SOFTWARE\WOW6432Node\Microsoft\Tracing\vs_setup_bootstrapper_RASAPI32 |
| Operation: | write | Name: | EnableConsoleTracing |
Value: 0 | |||
| (PID) Process: | (5700) vs_setup_bootstrapper.exe | Key: | HKEY_LOCAL_MACHINE\SOFTWARE\WOW6432Node\Microsoft\Tracing\vs_setup_bootstrapper_RASAPI32 |
| Operation: | write | Name: | FileTracingMask |
Value: | |||
Executable files
447
Suspicious files
26
Text files
77
Unknown types
3
Dropped files
PID | Process | Filename | Type | |
|---|---|---|---|---|
| 5916 | vs_BuildTools.exe | C:\Users\admin\AppData\Local\Temp\ed61ad5a2bb1f997d129dbb8ef2a\vs_bootstrapper_d15\HelpFile\1055\help.html | html | |
MD5:C7B60E697671394781260D5B2CD21810 | SHA256:CCF766B55CB0CC623F2705206A2AF04F2C83801580BC40A5AC20F644B814AB8F | |||
| 5916 | vs_BuildTools.exe | C:\Users\admin\AppData\Local\Temp\ed61ad5a2bb1f997d129dbb8ef2a\vs_bootstrapper_d15\HelpFile\1028\help.html | html | |
MD5:EEAF8CBF54B4E891FF6BE38CF44E3814 | SHA256:AAD5B2ACF30EB9C2DD35FF3B5C6C1A76CC4F1AE0AB6F382A635F5C329439F3AF | |||
| 5916 | vs_BuildTools.exe | C:\Users\admin\AppData\Local\Temp\ed61ad5a2bb1f997d129dbb8ef2a\vs_bootstrapper_d15\HelpFile\2052\help.html | html | |
MD5:1BD86FBD65D005648103E050D9BEB9F1 | SHA256:740117157B31BD5C634A232A0BA98A692B28ED2B4829EF52372200EB547D07CF | |||
| 5916 | vs_BuildTools.exe | C:\Users\admin\AppData\Local\Temp\ed61ad5a2bb1f997d129dbb8ef2a\vs_bootstrapper_d15\HelpFile\1033\help.html | html | |
MD5:4F7415E811ACBDDED478B40C3E7B287E | SHA256:55846D86DBE60B1B663018D72BEFA0F53A61D34A4EB093563B93A41B2FAA34A5 | |||
| 5916 | vs_BuildTools.exe | C:\Users\admin\AppData\Local\Temp\ed61ad5a2bb1f997d129dbb8ef2a\vs_bootstrapper_d15\HelpFile\1029\help.html | html | |
MD5:432E50F4764D69625E5143571F823B6A | SHA256:C877FE7CD9544369A42A61B5C51264D74BFCA5B4BC5D4DD1FA703428261D6ABC | |||
| 5916 | vs_BuildTools.exe | C:\Users\admin\AppData\Local\Temp\ed61ad5a2bb1f997d129dbb8ef2a\vs_bootstrapper_d15\HelpFile\1040\help.html | html | |
MD5:88289FD0D816A06C1A7B303397D0C122 | SHA256:DF46CA96704CBEF3B79E0AA7A8B8239E7ACF12899B6C02A063F138C1F0F9FD34 | |||
| 5916 | vs_BuildTools.exe | C:\Users\admin\AppData\Local\Temp\ed61ad5a2bb1f997d129dbb8ef2a\vs_bootstrapper_d15\HelpFile\1049\help.html | html | |
MD5:66D963430209555CDCB8A5C0219BC60C | SHA256:D9AB0A8DB5A8409C5849AA4E1512576225E5B320EA79B0CDC83C2B4848401611 | |||
| 5916 | vs_BuildTools.exe | C:\Users\admin\AppData\Local\Temp\ed61ad5a2bb1f997d129dbb8ef2a\vs_bootstrapper_d15\vs_setup_bootstrapper.exe | executable | |
MD5:E24EF04DDB8A5474314D34CBD3FFA0C2 | SHA256:49FC3EC8AB51C8F05591EE0FF0D9040BED994DBC3EF9A417A188C6D69A56952F | |||
| 5916 | vs_BuildTools.exe | C:\Users\admin\AppData\Local\Temp\ed61ad5a2bb1f997d129dbb8ef2a\vs_bootstrapper_d15\Microsoft.C2RSignatureReader.Interop.dll | executable | |
MD5:6240940009ABE0240203A943741F22B2 | SHA256:62D8143505B130E7DCD2488384C19827787F9370C132D0C05957E16C28C70447 | |||
| 5916 | vs_BuildTools.exe | C:\Users\admin\AppData\Local\Temp\ed61ad5a2bb1f997d129dbb8ef2a\vs_bootstrapper_d15\HelpFile\3082\help.html | html | |
MD5:0474106AC825B4F7727FF94576FC15C2 | SHA256:A597AA82F35641455E12BD78662A05142F64BC221FF91D4EC4F2A8FA2983297F | |||
Download PCAP, analyze network streams, HTTP content and a lot more at the full report
HTTP(S) requests
8
TCP/UDP connections
54
DNS requests
28
Threats
0
HTTP requests
PID | Process | Method | HTTP Code | IP | URL | CN | Type | Size | Reputation |
|---|---|---|---|---|---|---|---|---|---|
5700 | vs_setup_bootstrapper.exe | GET | 200 | 23.35.229.160:80 | http://www.microsoft.com/pkiops/crl/MicCodSigPCA2011_2011-07-08.crl | unknown | — | — | whitelisted |
608 | svchost.exe | GET | 200 | 23.35.229.160:80 | http://www.microsoft.com/pkiops/crl/MicSecSerCA2011_2011-10-18.crl | unknown | — | — | whitelisted |
5700 | vs_setup_bootstrapper.exe | GET | 200 | 23.48.23.143:80 | http://crl.microsoft.com/pki/crl/products/MicRooCerAut_2010-06-23.crl | unknown | — | — | whitelisted |
5700 | vs_setup_bootstrapper.exe | GET | 200 | 23.35.229.160:80 | http://www.microsoft.com/pkiops/crl/Microsoft%20Time-Stamp%20PCA%202010(1).crl | unknown | — | — | whitelisted |
8 | svchost.exe | GET | 200 | 192.229.221.95:80 | http://ocsp.digicert.com/MFEwTzBNMEswSTAJBgUrDgMCGgUABBSAUQYBMq2awn1Rh6Doh%2FsBYgFV7gQUA95QNVbRTLtm8KPiGxvDl7I90VUCEAJ0LqoXyo4hxxe7H%2Fz9DKA%3D | unknown | — | — | whitelisted |
6576 | SIHClient.exe | GET | 200 | 23.35.229.160:80 | http://www.microsoft.com/pkiops/crl/Microsoft%20ECC%20Product%20Root%20Certificate%20Authority%202018.crl | unknown | — | — | whitelisted |
6576 | SIHClient.exe | GET | 200 | 23.35.229.160:80 | http://www.microsoft.com/pkiops/crl/Microsoft%20ECC%20Update%20Secure%20Server%20CA%202.1.crl | unknown | — | — | whitelisted |
5700 | vs_setup_bootstrapper.exe | GET | 200 | 23.48.23.143:80 | http://crl.microsoft.com/pki/crl/products/MicCodSigPCA_2010-07-06.crl | unknown | — | — | whitelisted |
Download PCAP, analyze network streams, HTTP content and a lot more at the full report
Connections
PID | Process | IP | Domain | ASN | CN | Reputation |
|---|---|---|---|---|---|---|
736 | RUXIMICS.exe | 40.127.240.158:443 | — | MICROSOFT-CORP-MSN-AS-BLOCK | IE | unknown |
2120 | MoUsoCoreWorker.exe | 40.127.240.158:443 | — | MICROSOFT-CORP-MSN-AS-BLOCK | IE | unknown |
4 | System | 192.168.100.255:138 | — | — | — | whitelisted |
608 | svchost.exe | 40.127.240.158:443 | — | MICROSOFT-CORP-MSN-AS-BLOCK | IE | unknown |
5700 | vs_setup_bootstrapper.exe | 152.199.19.161:443 | az667904.vo.msecnd.net | EDGECAST | US | whitelisted |
5700 | vs_setup_bootstrapper.exe | 23.213.170.81:443 | go.microsoft.com | AKAMAI-AS | DE | whitelisted |
5700 | vs_setup_bootstrapper.exe | 13.85.16.224:443 | targetednotifications-tm.trafficmanager.net | MICROSOFT-CORP-MSN-AS-BLOCK | US | whitelisted |
608 | svchost.exe | 4.231.128.59:443 | settings-win.data.microsoft.com | MICROSOFT-CORP-MSN-AS-BLOCK | IE | whitelisted |
608 | svchost.exe | 23.35.229.160:80 | www.microsoft.com | AKAMAI-AS | DE | whitelisted |
5700 | vs_setup_bootstrapper.exe | 2.22.34.124:443 | aka.ms | AKAMAI-AS | IT | whitelisted |
DNS requests
Domain | IP | Reputation |
|---|---|---|
google.com |
| whitelisted |
az667904.vo.msecnd.net |
| whitelisted |
go.microsoft.com |
| whitelisted |
az700632.vo.msecnd.net |
| whitelisted |
targetednotifications-tm.trafficmanager.net |
| whitelisted |
settings-win.data.microsoft.com |
| whitelisted |
www.microsoft.com |
| whitelisted |
aka.ms |
| whitelisted |
download.visualstudio.microsoft.com |
| whitelisted |
crl.microsoft.com |
| whitelisted |