| File name: | vsto_execute.zip |
| Full analysis: | https://app.any.run/tasks/ca107a18-cf98-4232-bb79-eb5dc8975ece |
| Verdict: | Malicious activity |
| Analysis date: | April 05, 2024, 04:21:33 |
| OS: | Windows 7 Professional Service Pack 1 (build: 7601, 32 bit) |
| Indicators: | |
| MIME: | application/zip |
| File info: | Zip archive data, at least v2.0 to extract, compression method=deflate |
| MD5: | 170A2936D4E4BD176F56B41375556EFD |
| SHA1: | 3BA2A7ACBDF0B57AC719099DD5DF97264350E975 |
| SHA256: | 59ACF8385E2B318028F85B17592B16D3B0E4F7835A253BA71C5BE687D1FAD1C1 |
| SSDEEP: | 1536:A6jYfYeZYw0grrB4z2AE/3ofU4MFQxs3Fc8yu2/+m4loSww1LUNPQG:A60geew62zf8Ut4qxyWm42S3169 |
MALICIOUS
Drops the executable file immediately after the start
- WinRAR.exe (PID: 120)
SUSPICIOUS
Checks Windows Trust Settings
- VSTOInstaller.exe (PID: 2648)
Process drops legitimate windows executable
- WinRAR.exe (PID: 120)
Reads settings of System Certificates
- VSTOInstaller.exe (PID: 2648)
Uses RUNDLL32.EXE to load library
- WinRAR.exe (PID: 120)
Creates a software uninstall entry
- VSTOInstaller.exe (PID: 2648)
Reads security settings of Internet Explorer
- VSTOInstaller.exe (PID: 2648)
Searches for installed software
- VSTOInstaller.exe (PID: 2648)
Reads Internet Explorer settings
- VSTOInstaller.exe (PID: 2648)
Start notepad (likely ransomware note)
- WinRAR.exe (PID: 120)
Reads the Internet Settings
- VSTOInstaller.exe (PID: 2648)
INFO
Checks supported languages
- VSTOInstaller.exe (PID: 2648)
Reads the software policy settings
- VSTOInstaller.exe (PID: 2648)
Reads the computer name
- VSTOInstaller.exe (PID: 2648)
Reads the machine GUID from the registry
- VSTOInstaller.exe (PID: 2648)
Creates files or folders in the user directory
- VSTOInstaller.exe (PID: 2648)
Create files in a temporary directory
- VSTOInstaller.exe (PID: 2648)
Find more information about signature artifacts and mapping to MITRE ATT&CK™ MATRIX at the full report
TRiD
| .zip | | | ZIP compressed archive (100) |
|---|
EXIF
ZIP
| ZipRequiredVersion: | 20 |
|---|---|
| ZipBitFlag: | - |
| ZipCompression: | Deflated |
| ZipModifyDate: | 2023:05:26 00:18:40 |
| ZipCRC: | 0xcd107591 |
| ZipCompressedSize: | 13567 |
| ZipUncompressedSize: | 32664 |
| ZipFileName: | Microsoft.Office.Tools.Common.v4.0.Utilities.dll |
Total processes
42
Monitored processes
7
Malicious processes
3
Suspicious processes
0
Behavior graph
Click at the process to see the details
Process information
PID | CMD | Path | Indicators | Parent process | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 120 | "C:\Program Files\WinRAR\WinRAR.exe" "C:\Users\admin\AppData\Local\Temp\vsto_execute.zip" | C:\Program Files\WinRAR\WinRAR.exe | — | explorer.exe | |||||||||||
User: admin Company: Alexander Roshal Integrity Level: MEDIUM Description: WinRAR archiver Version: 5.91.0 Modules
| |||||||||||||||
| 696 | "C:\Windows\system32\rundll32.exe" C:\Windows\system32\shell32.dll,OpenAs_RunDLL C:\Users\admin\AppData\Local\Temp\Rar$DIa120.40999\Word Update.dll.manifest | C:\Windows\System32\rundll32.exe | — | WinRAR.exe | |||||||||||
User: admin Company: Microsoft Corporation Integrity Level: MEDIUM Description: Windows host process (Rundll32) Exit code: 0 Version: 6.1.7600.16385 (win7_rtm.090713-1255) Modules
| |||||||||||||||
| 1696 | "rundll32.exe" "C:\Program Files\Common Files\Microsoft Shared\VSTO\vstoee.dll",InstallVstoSolution C:\Users\admin\AppData\Local\Temp\Rar$DIa120.39890\Word Update.vsto | C:\Windows\System32\rundll32.exe | — | WinRAR.exe | |||||||||||
User: admin Company: Microsoft Corporation Integrity Level: MEDIUM Description: Windows host process (Rundll32) Exit code: 0 Version: 6.1.7600.16385 (win7_rtm.090713-1255) Modules
| |||||||||||||||
| 1928 | "C:\Windows\system32\rundll32.exe" C:\Windows\system32\shell32.dll,OpenAs_RunDLL C:\Users\admin\AppData\Local\Temp\Rar$DIa120.41252\Microsoft.Office.Tools.Common.v4.0.Utilities.dll | C:\Windows\System32\rundll32.exe | — | WinRAR.exe | |||||||||||
User: admin Company: Microsoft Corporation Integrity Level: MEDIUM Description: Windows host process (Rundll32) Exit code: 0 Version: 6.1.7600.16385 (win7_rtm.090713-1255) Modules
| |||||||||||||||
| 2648 | VSTOInstaller.exe /install file:///C:/Users/admin/AppData/Local/Temp/Rar$DIa120.39890/Word%20Update.vsto | C:\Program Files\Common Files\Microsoft Shared\VSTO\10.0\VSTOInstaller.exe | — | rundll32.exe | |||||||||||
User: admin Company: Microsoft Corporation Integrity Level: MEDIUM Description: Visual Studio Tools for Office Solution Installer Exit code: 4294967095 Version: 10.0.31007.0 built by: VSTO_Rel Modules
| |||||||||||||||
| 2756 | "C:\Windows\system32\rundll32.exe" C:\Windows\system32\shell32.dll,OpenAs_RunDLL C:\Users\admin\AppData\Local\Temp\Rar$DIa120.40712\Microsoft.Office.Tools.Word.v4.0.Utilities.dll | C:\Windows\System32\rundll32.exe | — | WinRAR.exe | |||||||||||
User: admin Company: Microsoft Corporation Integrity Level: MEDIUM Description: Windows host process (Rundll32) Exit code: 0 Version: 6.1.7600.16385 (win7_rtm.090713-1255) Modules
| |||||||||||||||
| 3684 | "C:\Windows\system32\NOTEPAD.EXE" C:\Users\admin\AppData\Local\Temp\Rar$DIa120.41523\file.txt | C:\Windows\System32\notepad.exe | — | WinRAR.exe | |||||||||||
User: admin Company: Microsoft Corporation Integrity Level: MEDIUM Description: Notepad Exit code: 0 Version: 6.1.7600.16385 (win7_rtm.090713-1255) Modules
| |||||||||||||||
Total events
13 148
Read events
13 107
Write events
40
Delete events
1
Modification events
| (PID) Process: | (120) WinRAR.exe | Key: | HKEY_CURRENT_USER\Software\WinRAR\Interface\Themes |
| Operation: | write | Name: | ShellExtBMP |
Value: | |||
| (PID) Process: | (120) WinRAR.exe | Key: | HKEY_CURRENT_USER\Software\WinRAR\Interface\Themes |
| Operation: | write | Name: | ShellExtIcon |
Value: | |||
| (PID) Process: | (120) WinRAR.exe | Key: | HKEY_CLASSES_ROOT\Local Settings\MuiCache\182\52C64B7E |
| Operation: | write | Name: | LanguageList |
Value: en-US | |||
| (PID) Process: | (120) WinRAR.exe | Key: | HKEY_CURRENT_USER\Software\WinRAR\ArcHistory |
| Operation: | write | Name: | 3 |
Value: C:\Users\admin\Desktop\phacker.zip | |||
| (PID) Process: | (120) WinRAR.exe | Key: | HKEY_CURRENT_USER\Software\WinRAR\ArcHistory |
| Operation: | write | Name: | 2 |
Value: C:\Users\admin\Desktop\Win7-KB3191566-x86.zip | |||
| (PID) Process: | (120) WinRAR.exe | Key: | HKEY_CURRENT_USER\Software\WinRAR\ArcHistory |
| Operation: | write | Name: | 1 |
Value: C:\Users\admin\Desktop\curl-8.5.0_1-win32-mingw.zip | |||
| (PID) Process: | (120) WinRAR.exe | Key: | HKEY_CURRENT_USER\Software\WinRAR\ArcHistory |
| Operation: | write | Name: | 0 |
Value: C:\Users\admin\AppData\Local\Temp\vsto_execute.zip | |||
| (PID) Process: | (120) WinRAR.exe | Key: | HKEY_CURRENT_USER\Software\WinRAR\FileList\FileColumnWidths |
| Operation: | write | Name: | name |
Value: 120 | |||
| (PID) Process: | (120) WinRAR.exe | Key: | HKEY_CURRENT_USER\Software\WinRAR\FileList\FileColumnWidths |
| Operation: | write | Name: | size |
Value: 80 | |||
| (PID) Process: | (120) WinRAR.exe | Key: | HKEY_CURRENT_USER\Software\WinRAR\FileList\FileColumnWidths |
| Operation: | write | Name: | type |
Value: 120 | |||
Executable files
2
Suspicious files
0
Text files
5
Unknown types
0
Dropped files
PID | Process | Filename | Type | |
|---|---|---|---|---|
| 120 | WinRAR.exe | C:\Users\admin\AppData\Local\Temp\Rar$DIa120.39890\Word Update.vsto | xml | |
MD5:— | SHA256:— | |||
| 2648 | VSTOInstaller.exe | C:\Users\admin\AppData\Local\Temp\Deployment\WT2308XL.2K4\OJEN541H.6AN.application | xml | |
MD5:— | SHA256:— | |||
| 2648 | VSTOInstaller.exe | C:\Users\admin\AppData\Local\Microsoft\Windows\Temporary Internet Files\Content.IE5\PO2HN1X2\FRXHSIDN.log | text | |
MD5:— | SHA256:— | |||
| 120 | WinRAR.exe | C:\Users\admin\AppData\Local\Temp\Rar$DIa120.40712\Microsoft.Office.Tools.Word.v4.0.Utilities.dll | executable | |
MD5:— | SHA256:— | |||
| 120 | WinRAR.exe | C:\Users\admin\AppData\Local\Temp\Rar$DIa120.40999\Word Update.dll.manifest | xml | |
MD5:— | SHA256:— | |||
| 120 | WinRAR.exe | C:\Users\admin\AppData\Local\Temp\Rar$DIa120.41252\Microsoft.Office.Tools.Common.v4.0.Utilities.dll | executable | |
MD5:— | SHA256:— | |||
| 120 | WinRAR.exe | C:\Users\admin\AppData\Local\Temp\Rar$DIa120.41523\file.txt | text | |
MD5:— | SHA256:— | |||
Download PCAP, analyze network streams, HTTP content and a lot more at the full report
HTTP(S) requests
0
TCP/UDP connections
4
DNS requests
0
Threats
0
HTTP requests
Download PCAP, analyze network streams, HTTP content and a lot more at the full report
Connections
PID | Process | IP | Domain | ASN | CN | Reputation |
|---|---|---|---|---|---|---|
4 | System | 192.168.100.255:137 | — | — | — | whitelisted |
— | — | 224.0.0.252:5355 | — | — | — | unknown |
4 | System | 192.168.100.255:138 | — | — | — | whitelisted |
1080 | svchost.exe | 224.0.0.252:5355 | — | — | — | unknown |