File name:

UltraMedia.rar

Full analysis: https://app.any.run/tasks/ad343ac4-1d88-47a7-8e66-9f381ee4f8c9
Verdict: Malicious activity
Analysis date: January 06, 2025, 11:15:12
OS: Windows 10 Professional (build: 19045, 64 bit)
Indicators:
MIME: application/x-rar
File info: RAR archive data, v5
MD5:

B235DAB0102FE064E2DB4DE21F336100

SHA1:

7938297C88B975010460DAF1CF9981A074E81AA7

SHA256:

D4E89846D675BAB11AF65023948C1F16FD5887F2E988A8F6226F7557886631FD

SSDEEP:

98304:U4oLIFjwd9T6230W0Yb1Uig2cjvMs/nNH64kPUnJgzcSnTQkvP3WLFj369vRiiUQ:CbrAgyy

ANY.RUN is an interactive service which provides full access to the guest system. Information in this report could be distorted by user actions and is provided for user acknowledgement as it is. ANY.RUN does not guarantee maliciousness or safety of the content.

  • MALICIOUS

    • Executing a file with an untrusted certificate

      • NahimicService.exe (PID: 6404)

  • SUSPICIOUS

    • Process drops legitimate windows executable

      • WinRAR.exe (PID: 6424)

  • INFO

    • The sample compiled with english language support

      • WinRAR.exe (PID: 6424)

    • Manual execution by a user

      • NahimicService.exe (PID: 6404)

    • Create files in a temporary directory

      • NahimicService.exe (PID: 6404)

    • Executable content was dropped or overwritten

      • WinRAR.exe (PID: 6424)
Find more information about signature artifacts and mapping to MITRE ATT&CK™ MATRIX at the full report
No Malware configuration.

TRiD

.rar | RAR compressed archive (v5.0) (61.5)
.rar | RAR compressed archive (gen) (38.4)

EXIF

ZIP

FileVersion: RAR v5
CompressedSize: 58125
UncompressedSize: 116824
OperatingSystem: Win32
ArchivedFileName: UltraMedia/WebView2Loader.dll
No data.
screenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshot
All screenshots are available in the full report
All screenshots are available in the full report
Total processes
125
Monitored processes
3
Malicious processes
0
Suspicious processes
1

Behavior graph

Click at the process to see the details
start winrar.exe rundll32.exe no specs nahimicservice.exe no specs

Process information

PID
CMD
Path
Indicators
Parent process
2928C:\WINDOWS\System32\rundll32.exe C:\WINDOWS\System32\shell32.dll,SHCreateLocalServerRunDll {9aa46009-3ce0-458a-a354-715610a075e6} -EmbeddingC:\Windows\System32\rundll32.exe—svchost.exe
User:
admin
Company:
Microsoft Corporation
Integrity Level:
MEDIUM
Description:
Windows host process (Rundll32)
Exit code:
0
Version:
10.0.19041.1 (WinBuild.160101.0800)
Modules
Images
c:\windows\system32\rundll32.exe
c:\windows\system32\ntdll.dll
c:\windows\system32\kernel32.dll
c:\windows\system32\kernelbase.dll
c:\windows\system32\msvcrt.dll
c:\windows\system32\combase.dll
c:\windows\system32\ucrtbase.dll
c:\windows\system32\rpcrt4.dll
c:\windows\system32\shcore.dll
c:\windows\system32\imagehlp.dll
6404"C:\Users\admin\AppData\Roaming\UltraMedia\NahimicService.exe" C:\Users\admin\AppData\Roaming\UltraMedia\NahimicService.exe—explorer.exe
User:
admin
Company:
Soroush Falahati
Integrity Level:
MEDIUM
Description:
Circular ProgressBar Windows Form Control
Exit code:
0
Version:
2.5
Modules
Images
c:\users\admin\appdata\roaming\ultramedia\nahimicservice.exe
c:\windows\system32\ntdll.dll
c:\windows\syswow64\ntdll.dll
c:\windows\system32\wow64.dll
c:\windows\system32\wow64win.dll
c:\windows\system32\wow64cpu.dll
c:\windows\syswow64\kernel32.dll
c:\windows\syswow64\kernelbase.dll
c:\windows\syswow64\apphelp.dll
c:\windows\syswow64\user32.dll
6424"C:\Program Files\WinRAR\WinRAR.exe" C:\Users\admin\AppData\Roaming\UltraMedia.rarC:\Program Files\WinRAR\WinRAR.exe
explorer.exe
User:
admin
Company:
Alexander Roshal
Integrity Level:
MEDIUM
Description:
WinRAR archiver
Version:
5.91.0
Modules
Images
c:\program files\winrar\winrar.exe
c:\windows\system32\ntdll.dll
c:\windows\system32\kernel32.dll
c:\windows\system32\kernelbase.dll
c:\windows\system32\user32.dll
c:\windows\system32\win32u.dll
c:\windows\system32\gdi32.dll
c:\windows\system32\gdi32full.dll
c:\windows\system32\msvcp_win.dll
c:\windows\system32\ucrtbase.dll
Total events
1 694
Read events
1 686
Write events
8
Delete events
0

Modification events

(PID) Process:(6424) WinRAR.exeKey:HKEY_CURRENT_USER\SOFTWARE\WinRAR\ArcHistory
Operation:writeName:3
Value:
C:\Users\admin\Desktop\preferences.zip
(PID) Process:(6424) WinRAR.exeKey:HKEY_CURRENT_USER\SOFTWARE\WinRAR\ArcHistory
Operation:writeName:2
Value:
C:\Users\admin\Desktop\chromium_ext.zip
(PID) Process:(6424) WinRAR.exeKey:HKEY_CURRENT_USER\SOFTWARE\WinRAR\ArcHistory
Operation:writeName:1
Value:
C:\Users\admin\Desktop\omni_23_10_2024_.zip
(PID) Process:(6424) WinRAR.exeKey:HKEY_CURRENT_USER\SOFTWARE\WinRAR\ArcHistory
Operation:writeName:0
Value:
C:\Users\admin\AppData\Roaming\UltraMedia.rar
(PID) Process:(6424) WinRAR.exeKey:HKEY_CURRENT_USER\SOFTWARE\WinRAR\FileList\FileColumnWidths
Operation:writeName:name
Value:
120
(PID) Process:(6424) WinRAR.exeKey:HKEY_CURRENT_USER\SOFTWARE\WinRAR\FileList\FileColumnWidths
Operation:writeName:size
Value:
80
(PID) Process:(6424) WinRAR.exeKey:HKEY_CURRENT_USER\SOFTWARE\WinRAR\FileList\FileColumnWidths
Operation:writeName:type
Value:
120
(PID) Process:(6424) WinRAR.exeKey:HKEY_CURRENT_USER\SOFTWARE\WinRAR\FileList\FileColumnWidths
Operation:writeName:mtime
Value:
100
Executable files
1
Suspicious files
0
Text files
1
Unknown types
0

Dropped files

PID
Process
Filename
Type
6424WinRAR.exeC:\Users\admin\AppData\Local\Temp\Rar$DRa6424.46794\UltraMedia\NahimicService.exe —
MD5:—
SHA256:—
6424WinRAR.exeC:\Users\admin\AppData\Local\Temp\Rar$DRa6424.46794\UltraMedia\WebView2Loader.dllexecutable
MD5:498EC9D51485EBF9522687FF5C853664
SHA256:7DD7DCF920414E3629C7313FEA95DAC8F49DE4A67D9BBA6506FAE2EB9BB437FB
6404NahimicService.exeC:\Users\admin\AppData\Local\Temp\1abc2f03image
MD5:A531136EB3047E7A951F786F51121C50
SHA256:8DA9AA7EE2D51D3BD1F6C9DACC64977A8C48871718478EC8D1E1E11FD6911621
Download PCAP, analyze network streams, HTTP content and a lot more at the full report
HTTP(S) requests
9
TCP/UDP connections
32
DNS requests
14
Threats
0

HTTP requests

PID
Process
Method
HTTP Code
IP
URL
CN
Type
Size
Reputation
—
—
GET
200
23.48.23.143:80
http://crl.microsoft.com/pki/crl/products/MicRooCerAut2011_2011_03_22.crl
unknown
—
—
whitelisted
4712
MoUsoCoreWorker.exe
GET
200
184.30.21.171:80
http://www.microsoft.com/pkiops/crl/MicSecSerCA2011_2011-10-18.crl
unknown
—
—
whitelisted
4712
MoUsoCoreWorker.exe
GET
200
23.48.23.143:80
http://crl.microsoft.com/pki/crl/products/MicRooCerAut2011_2011_03_22.crl
unknown
—
—
whitelisted
—
—
GET
200
184.30.21.171:80
http://www.microsoft.com/pkiops/crl/MicSecSerCA2011_2011-10-18.crl
unknown
—
—
whitelisted
—
—
GET
200
192.229.221.95:80
http://ocsp.digicert.com/MFEwTzBNMEswSTAJBgUrDgMCGgUABBSAUQYBMq2awn1Rh6Doh%2FsBYgFV7gQUA95QNVbRTLtm8KPiGxvDl7I90VUCEAJ0LqoXyo4hxxe7H%2Fz9DKA%3D
unknown
—
—
whitelisted
7024
SIHClient.exe
GET
200
184.30.21.171:80
http://www.microsoft.com/pkiops/crl/Microsoft%20ECC%20Product%20Root%20Certificate%20Authority%202018.crl
unknown
—
—
whitelisted
—
—
GET
200
192.229.221.95:80
http://ocsp.digicert.com/MFEwTzBNMEswSTAJBgUrDgMCGgUABBTrjrydRyt%2BApF3GSPypfHBxR5XtQQUs9tIpPmhxdiuNkHMEWNpYim8S8YCEAI5PUjXAkJafLQcAAsO18o%3D
unknown
—
—
whitelisted
7024
SIHClient.exe
GET
200
184.30.21.171:80
http://www.microsoft.com/pkiops/crl/Microsoft%20ECC%20Update%20Secure%20Server%20CA%202.1.crl
unknown
—
—
whitelisted
5588
backgroundTaskHost.exe
GET
200
192.229.221.95:80
http://ocsp.digicert.com/MFEwTzBNMEswSTAJBgUrDgMCGgUABBQ50otx%2Fh0Ztl%2Bz8SiPI7wEWVxDlQQUTiJUIBiV5uNu5g%2F6%2BrkS7QYXjzkCEAUZZSZEml49Gjh0j13P68w%3D
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
4
System
192.168.100.255:137
—
—
—
whitelisted
—
—
4.231.128.59:443
settings-win.data.microsoft.com
MICROSOFT-CORP-MSN-AS-BLOCK
IE
whitelisted
4712
MoUsoCoreWorker.exe
23.48.23.143:80
crl.microsoft.com
Akamai International B.V.
DE
whitelisted
—
—
23.48.23.143:80
crl.microsoft.com
Akamai International B.V.
DE
whitelisted
4712
MoUsoCoreWorker.exe
184.30.21.171:80
www.microsoft.com
AKAMAI-AS
DE
whitelisted
—
—
184.30.21.171:80
www.microsoft.com
AKAMAI-AS
DE
whitelisted
4
System
192.168.100.255:138
—
—
—
whitelisted
5064
SearchApp.exe
104.126.37.170:443
www.bing.com
Akamai International B.V.
DE
whitelisted
—
—
192.229.221.95:80
ocsp.digicert.com
EDGECAST
US
whitelisted
1176
svchost.exe
20.190.160.20:443
login.live.com
MICROSOFT-CORP-MSN-AS-BLOCK
NL
whitelisted

DNS requests

Domain
IP
Reputation
settings-win.data.microsoft.com
  • 4.231.128.59
whitelisted
google.com
  • 172.217.16.142
whitelisted
crl.microsoft.com
  • 23.48.23.143
  • 23.48.23.156
whitelisted
www.microsoft.com
  • 184.30.21.171
whitelisted
www.bing.com
  • 104.126.37.170
  • 104.126.37.186
  • 104.126.37.163
  • 104.126.37.185
  • 104.126.37.123
  • 104.126.37.161
  • 104.126.37.162
  • 104.126.37.178
  • 104.126.37.179
whitelisted
ocsp.digicert.com
  • 192.229.221.95
whitelisted
login.live.com
  • 20.190.160.20
  • 40.126.32.138
  • 40.126.32.134
  • 20.190.160.14
  • 40.126.32.76
  • 40.126.32.133
  • 40.126.32.140
  • 20.190.160.17
whitelisted
go.microsoft.com
  • 23.35.238.131
whitelisted
slscr.update.microsoft.com
  • 20.12.23.50
whitelisted
fe3cr.delivery.mp.microsoft.com
  • 20.242.39.171
whitelisted

Threats

No threats detected
No debug info
Interactive malware hunting service ANY.RUN
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Reports
UltraMedia.rar