| File name: | SANS SEC401.pdf_ |
| Full analysis: | https://app.any.run/tasks/3604054f-df53-4957-ab00-aaf811b2c41a |
| Verdict: | Malicious activity |
| Analysis date: | April 14, 2024, 00:10:35 |
| OS: | Windows 7 Professional Service Pack 1 (build: 7601, 32 bit) |
| Indicators: | |
| MIME: | application/pdf |
| File info: | PDF document, version 1.6 (zip deflate encoded) |
| MD5: | 60CCE380DA0C5D26C70C4917C06FA60F |
| SHA1: | AFF4353707A2B9893B473B8A42FA189F48F796DA |
| SHA256: | BF76B9992DEF63B87CD3880487624F07D60EE0FC9003FE29A73A9AD3632C6AC4 |
| SSDEEP: | 768:JHQ9WeGTz640jPifjdTiWQigyF9z6y0v7+LpYyARQ:NeK+r7iFVpo7+LpZARQ |
MALICIOUS
The DLL Hijacking
- OIS.EXE (PID: 3996)
SUSPICIOUS
Reads the Internet Settings
- rundll32.exe (PID: 1696)
Non-standard symbols in registry
- OIS.EXE (PID: 3996)
INFO
Reads Environment values
- OIS.EXE (PID: 3996)
Reads the computer name
- OIS.EXE (PID: 3996)
Checks supported languages
- OIS.EXE (PID: 3996)
Reads Microsoft Office registry keys
- OIS.EXE (PID: 3996)
Creates files or folders in the user directory
- OIS.EXE (PID: 3996)
Reads the machine GUID from the registry
- OIS.EXE (PID: 3996)
Process checks computer location settings
- OIS.EXE (PID: 3996)
Find more information about signature artifacts and mapping to MITRE ATT&CK™ MATRIX at the full report
TRiD
| | | Adobe Portable Document Format (100) |
EXIF
| PDFVersion: | 1.6 |
|---|---|
| Linearized: | No |
Total processes
39
Monitored processes
2
Malicious processes
1
Suspicious processes
1
Behavior graph
Click at the process to see the details
Process information
PID | CMD | Path | Indicators | Parent process | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1696 | "C:\Windows\system32\rundll32.exe" C:\Windows\system32\shell32.dll,OpenAs_RunDLL "C:\Users\admin\Desktop\SANS SEC401.pdf_" | C:\Windows\System32\rundll32.exe | — | explorer.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
| |||||||||||||||
| 3996 | "C:\PROGRA~1\MICROS~1\Office14\OIS.EXE" /shellOpen "C:\Users\admin\Desktop\SANS SEC401.pdf_" | C:\Program Files\Microsoft Office\Office14\OIS.EXE | — | rundll32.exe | |||||||||||
User: admin Company: Microsoft Corporation Integrity Level: MEDIUM Description: Microsoft Office 2010 Exit code: 0 Version: 14.0.6015.1000 Modules
| |||||||||||||||
Total events
5 070
Read events
5 012
Write events
54
Delete events
4
Modification events
| (PID) Process: | (1696) rundll32.exe | Key: | HKEY_CLASSES_ROOT\Local Settings\Software\Microsoft\Windows\Shell\MuiCache |
| Operation: | write | Name: | C:\Program Files\Adobe\Acrobat Reader DC\Reader\AcroRd32.exe |
Value: Adobe Acrobat Reader DC | |||
| (PID) Process: | (1696) rundll32.exe | Key: | HKEY_CLASSES_ROOT\Local Settings\Software\Microsoft\Windows\Shell\MuiCache |
| Operation: | write | Name: | C:\Windows\eHome\ehshell.exe |
Value: Windows Media Center | |||
| (PID) Process: | (1696) rundll32.exe | Key: | HKEY_CLASSES_ROOT\Local Settings\Software\Microsoft\Windows\Shell\MuiCache |
| Operation: | write | Name: | C:\Program Files\Mozilla Firefox\firefox.exe |
Value: Firefox | |||
| (PID) Process: | (1696) rundll32.exe | Key: | HKEY_CLASSES_ROOT\Local Settings\Software\Microsoft\Windows\Shell\MuiCache |
| Operation: | write | Name: | C:\Program Files\Internet Explorer\iexplore.exe |
Value: Internet Explorer | |||
| (PID) Process: | (1696) rundll32.exe | Key: | HKEY_CLASSES_ROOT\Local Settings\Software\Microsoft\Windows\Shell\MuiCache |
| Operation: | write | Name: | C:\Windows\system32\mspaint.exe |
Value: Paint | |||
| (PID) Process: | (1696) rundll32.exe | Key: | HKEY_CLASSES_ROOT\Local Settings\Software\Microsoft\Windows\Shell\MuiCache |
| Operation: | write | Name: | C:\Windows\system32\NOTEPAD.EXE |
Value: Notepad | |||
| (PID) Process: | (1696) rundll32.exe | Key: | HKEY_CLASSES_ROOT\Local Settings\Software\Microsoft\Windows\Shell\MuiCache |
| Operation: | write | Name: | C:\PROGRA~1\MICROS~1\Office14\OIS.EXE |
Value: Microsoft Office 2010 | |||
| (PID) Process: | (1696) rundll32.exe | Key: | HKEY_CLASSES_ROOT\Local Settings\Software\Microsoft\Windows\Shell\MuiCache |
| Operation: | write | Name: | C:\Program Files\Windows Photo Viewer\PhotoViewer.dll |
Value: Windows Photo Viewer | |||
| (PID) Process: | (1696) rundll32.exe | Key: | HKEY_CLASSES_ROOT\Local Settings\Software\Microsoft\Windows\Shell\MuiCache |
| Operation: | write | Name: | C:\Program Files\VideoLAN\VLC\vlc.exe |
Value: VLC media player | |||
| (PID) Process: | (1696) rundll32.exe | Key: | HKEY_CLASSES_ROOT\Local Settings\Software\Microsoft\Windows\Shell\MuiCache |
| Operation: | write | Name: | C:\Program Files\Microsoft Office\Office14\WINWORD.EXE |
Value: Microsoft Word | |||
Executable files
0
Suspicious files
1
Text files
2
Unknown types
0
Dropped files
PID | Process | Filename | Type | |
|---|---|---|---|---|
| 3996 | OIS.EXE | C:\Users\admin\AppData\Local\Temp\CVR919C.tmp.cvr | — | |
MD5:— | SHA256:— | |||
| 3996 | OIS.EXE | C:\Users\admin\AppData\Local\Microsoft\OIS\OIScatalog.cag | text | |
MD5:— | SHA256:— | |||
| 3996 | OIS.EXE | C:\Users\admin\AppData\Local\Microsoft\OIS\thumbnails\76F63954-1.jpg | image | |
MD5:— | SHA256:— | |||
| 3996 | OIS.EXE | C:\Users\admin\AppData\Roaming\Microsoft\OIS\Toolbars.dat | binary | |
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 |
4 | System | 192.168.100.255:138 | — | — | — | whitelisted |
1080 | svchost.exe | 224.0.0.252:5355 | — | — | — | unknown |