File name:

1 (334)

Full analysis: https://app.any.run/tasks/a38bf7b0-4400-49f9-97f2-00ecbfc3738f
Verdict: Malicious activity
Analysis date: March 24, 2025, 20:57:50
OS: Windows 10 Professional (build: 19044, 64 bit)
Tags:
vobfus
worm
Indicators:
MIME: application/vnd.microsoft.portable-executable
File info: PE32 executable (GUI) Intel 80386, for MS Windows, 3 sections
MD5:

7A36E5DA0A435FBC9742FE376AEA50D0

SHA1:

8A4570ADF1515376803E95B29B55685AC4338F82

SHA256:

425D2B7212DBD0213EC33FA77C6849CF14A97A13EF326E4E41C0B63D78B5226C

SSDEEP:

768:SPPeZiYePLFM4tuIaHVIkcn3mA7pj91/LEfR:SeBePLFM4tuIaHVIjn17pj91/LEfR

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

    • VOBFUS mutex has been found

      • 1 (334).exe (PID: 1452)
      • yuobu.exe (PID: 5588)

    • Changes the autorun value in the registry

      • 1 (334).exe (PID: 1452)
      • yuobu.exe (PID: 5588)

    • VOBFUS has been detected

      • yuobu.exe (PID: 5588)

    • Changes the Windows auto-update feature

      • 1 (334).exe (PID: 1452)
      • yuobu.exe (PID: 5588)

  • SUSPICIOUS

    • Executable content was dropped or overwritten

      • 1 (334).exe (PID: 1452)

    • Reads security settings of Internet Explorer

      • 1 (334).exe (PID: 1452)

  • INFO

    • The sample compiled with english language support

      • 1 (334).exe (PID: 1452)

    • Reads the computer name

      • 1 (334).exe (PID: 1452)
      • yuobu.exe (PID: 5588)

    • Checks supported languages

      • 1 (334).exe (PID: 1452)
      • yuobu.exe (PID: 5588)

    • Process checks computer location settings

      • 1 (334).exe (PID: 1452)

    • Reads the software policy settings

      • slui.exe (PID: 5008)
Find more information about signature artifacts and mapping to MITRE ATT&CK™ MATRIX at the full report
No Malware configuration.

TRiD

.exe | Win32 Executable Microsoft Visual Basic 6 (84.4)
.dll | Win32 Dynamic Link Library (generic) (6.7)
.exe | Win32 Executable (generic) (4.6)
.exe | Generic Win/DOS Executable (2)
.exe | DOS Executable Generic (2)

EXIF

EXE

MachineType: Intel 386 or later, and compatibles
TimeStamp: 2012:09:24 22:52:20+00:00
ImageFileCharacteristics: No relocs, Executable, No line numbers, No symbols, 32-bit
PEType: PE32
LinkerVersion: 6
CodeSize: 73728
InitializedDataSize: 28672
UninitializedDataSize: -
EntryPoint: 0x121c
OSVersion: 4
ImageVersion: 2.3
SubsystemVersion: 4
Subsystem: Windows GUI
FileVersionNumber: 2.3.0.0
ProductVersionNumber: 2.3.0.0
FileFlagsMask: 0x0000
FileFlags: (none)
FileOS: Win32
ObjectFileType: Executable application
FileSubtype: -
LanguageCode: English (U.S.)
CharacterSet: Unicode
ProductName: Coutil
FileVersion: 2.03
ProductVersion: 2.03
InternalName: Endoscope
OriginalFileName: Endoscope.exe
No data.
screenshot
All screenshots are available in the full report
All screenshots are available in the full report
Total processes
140
Monitored processes
6
Malicious processes
2
Suspicious processes
0

Behavior graph

Click at the process to see the details
start #VOBFUS 1 (334).exe sppextcomobj.exe no specs slui.exe #VOBFUS yuobu.exe slui.exe no specs svchost.exe

Process information

PID
CMD
Path
Indicators
Parent process
1452"C:\Users\admin\AppData\Local\Temp\1 (334).exe" C:\Users\admin\AppData\Local\Temp\1 (334).exe
explorer.exe
User:
admin
Integrity Level:
MEDIUM
Version:
2.03
Modules
Images
c:\users\admin\appdata\local\temp\1 (334).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\comdlg32.dll
2196C:\WINDOWS\system32\svchost.exe -k NetworkService -p -s DnscacheC:\Windows\System32\svchost.exe
services.exe
User:
NETWORK SERVICE
Company:
Microsoft Corporation
Integrity Level:
SYSTEM
Description:
Host Process for Windows Services
Version:
10.0.19041.1 (WinBuild.160101.0800)
Modules
Images
c:\windows\system32\svchost.exe
c:\windows\system32\ntdll.dll
c:\windows\system32\kernel32.dll
c:\windows\system32\kernelbase.dll
c:\windows\system32\sechost.dll
c:\windows\system32\rpcrt4.dll
c:\windows\system32\bcrypt.dll
c:\windows\system32\ucrtbase.dll
c:\windows\system32\combase.dll
c:\windows\system32\kernel.appcore.dll
4164C:\WINDOWS\system32\SppExtComObj.exe -EmbeddingC:\Windows\System32\SppExtComObj.Exe—svchost.exe
User:
NETWORK SERVICE
Company:
Microsoft Corporation
Integrity Level:
SYSTEM
Description:
KMS Connection Broker
Version:
10.0.19041.3996 (WinBuild.160101.0800)
Modules
Images
c:\windows\system32\sppextcomobj.exe
c:\windows\system32\ntdll.dll
c:\windows\system32\kernel32.dll
c:\windows\system32\kernelbase.dll
c:\windows\system32\advapi32.dll
c:\windows\system32\msvcrt.dll
c:\windows\system32\sechost.dll
c:\windows\system32\rpcrt4.dll
c:\windows\system32\bcrypt.dll
c:\windows\system32\oleaut32.dll
5008"C:\WINDOWS\System32\SLUI.exe" RuleId=3482d82e-ca2c-4e1f-8864-da0267b484b2;Action=AutoActivate;AppId=55c92734-d682-4d71-983e-d6ec3f16059f;SkuId=4de7cb65-cdf1-4de9-8ae8-e3cce27b9f2c;NotificationInterval=1440;Trigger=TimerEventC:\Windows\System32\slui.exe
SppExtComObj.Exe
User:
NETWORK SERVICE
Company:
Microsoft Corporation
Integrity Level:
SYSTEM
Description:
Windows Activation Client
Version:
10.0.19041.1 (WinBuild.160101.0800)
Modules
Images
c:\windows\system32\slui.exe
c:\windows\system32\ntdll.dll
c:\windows\system32\kernel32.dll
c:\windows\system32\kernelbase.dll
c:\windows\system32\advapi32.dll
c:\windows\system32\msvcrt.dll
c:\windows\system32\sechost.dll
c:\windows\system32\rpcrt4.dll
c:\windows\system32\bcrypt.dll
c:\windows\system32\user32.dll
5588"C:\Users\admin\yuobu.exe" C:\Users\admin\yuobu.exe
1 (334).exe
User:
admin
Integrity Level:
MEDIUM
Version:
2.03
Modules
Images
c:\users\admin\yuobu.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\comdlg32.dll
6592C:\WINDOWS\System32\slui.exe -EmbeddingC:\Windows\System32\slui.exe—svchost.exe
User:
admin
Company:
Microsoft Corporation
Integrity Level:
MEDIUM
Description:
Windows Activation Client
Version:
10.0.19041.1 (WinBuild.160101.0800)
Modules
Images
c:\windows\system32\slui.exe
c:\windows\system32\ntdll.dll
c:\windows\system32\kernel32.dll
c:\windows\system32\kernelbase.dll
c:\windows\system32\advapi32.dll
c:\windows\system32\msvcrt.dll
c:\windows\system32\sechost.dll
c:\windows\system32\rpcrt4.dll
c:\windows\system32\bcrypt.dll
c:\windows\system32\user32.dll
Total events
1 725
Read events
1 428
Write events
297
Delete events
0

Modification events

(PID) Process:(1452) 1 (334).exeKey:HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer
Operation:writeName:SlowContextMenuEntries
Value:
6024B221EA3A6910A2DC08002B30309D0A010000BD0E0C47735D584D9CEDE91E22E23282770100000114020000000000C0000000000000468D0000006078A409B011A54DAFA526D86198A780390100009AD298B2EDA6DE11BA8CA68E55D895936E000000
(PID) Process:(1452) 1 (334).exeKey:HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion\Run
Operation:writeName:yuobu
Value:
C:\Users\admin\yuobu.exe /w
(PID) Process:(1452) 1 (334).exeKey:HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Microsoft\Windows\WindowsUpdate\AU
Operation:writeName:NoAutoUpdate
Value:
1
(PID) Process:(5588) yuobu.exeKey:HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion\Run
Operation:writeName:yuobu
Value:
C:\Users\admin\yuobu.exe /b
(PID) Process:(5588) yuobu.exeKey:HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Microsoft\Windows\WindowsUpdate\AU
Operation:writeName:NoAutoUpdate
Value:
1
(PID) Process:(5588) yuobu.exeKey:HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion\Run
Operation:writeName:yuobu
Value:
C:\Users\admin\yuobu.exe /i
(PID) Process:(5588) yuobu.exeKey:HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion\Run
Operation:writeName:yuobu
Value:
C:\Users\admin\yuobu.exe /c
(PID) Process:(5588) yuobu.exeKey:HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion\Run
Operation:writeName:yuobu
Value:
C:\Users\admin\yuobu.exe /m
(PID) Process:(5588) yuobu.exeKey:HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion\Run
Operation:writeName:yuobu
Value:
C:\Users\admin\yuobu.exe /w
(PID) Process:(5588) yuobu.exeKey:HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion\Run
Operation:writeName:yuobu
Value:
C:\Users\admin\yuobu.exe /u
Executable files
1
Suspicious files
0
Text files
0
Unknown types
0

Dropped files

PID
Process
Filename
Type
14521 (334).exeC:\Users\admin\yuobu.exeexecutable
MD5:07633A9BCEF17F099F15C75C60210E53
SHA256:21C90E2F097DA563CB29170F9C3B3FB290733ADCA3DF78E3E58DFF4538E0CE4E
Download PCAP, analyze network streams, HTTP content and a lot more at the full report
HTTP(S) requests
5
TCP/UDP connections
26
DNS requests
18
Threats
0

HTTP requests

PID
Process
Method
HTTP Code
IP
URL
CN
Type
Size
Reputation
—
—
GET
200
23.48.23.159:80
http://crl.microsoft.com/pki/crl/products/MicRooCerAut2011_2011_03_22.crl
unknown
—
—
whitelisted
2616
SIHClient.exe
GET
200
2.23.246.101:80
http://www.microsoft.com/pkiops/crl/Microsoft%20ECC%20Product%20Root%20Certificate%20Authority%202018.crl
unknown
—
—
whitelisted
5404
backgroundTaskHost.exe
GET
200
23.54.109.203:80
http://ocsp.digicert.com/MFEwTzBNMEswSTAJBgUrDgMCGgUABBQ50otx%2Fh0Ztl%2Bz8SiPI7wEWVxDlQQUTiJUIBiV5uNu5g%2F6%2BrkS7QYXjzkCEAUZZSZEml49Gjh0j13P68w%3D
unknown
—
—
whitelisted
2616
SIHClient.exe
GET
200
2.23.246.101:80
http://www.microsoft.com/pkiops/crl/Microsoft%20ECC%20Update%20Secure%20Server%20CA%202.1.crl
unknown
—
—
whitelisted
6544
svchost.exe
GET
200
23.54.109.203:80
http://ocsp.digicert.com/MFEwTzBNMEswSTAJBgUrDgMCGgUABBSAUQYBMq2awn1Rh6Doh%2FsBYgFV7gQUA95QNVbRTLtm8KPiGxvDl7I90VUCEAJ0LqoXyo4hxxe7H%2Fz9DKA%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
192.168.100.255:138
—
—
—
whitelisted
—
—
4.231.128.59:443
settings-win.data.microsoft.com
MICROSOFT-CORP-MSN-AS-BLOCK
IE
whitelisted
—
—
23.48.23.159:80
crl.microsoft.com
Akamai International B.V.
DE
whitelisted
6544
svchost.exe
20.190.160.22:443
login.live.com
MICROSOFT-CORP-MSN-AS-BLOCK
NL
whitelisted
6544
svchost.exe
23.54.109.203:80
ocsp.digicert.com
AKAMAI-AS
DE
whitelisted
5496
MoUsoCoreWorker.exe
4.231.128.59:443
settings-win.data.microsoft.com
MICROSOFT-CORP-MSN-AS-BLOCK
IE
whitelisted
3216
svchost.exe
40.115.3.253:443
client.wns.windows.com
MICROSOFT-CORP-MSN-AS-BLOCK
NL
whitelisted
2104
svchost.exe
4.231.128.59:443
settings-win.data.microsoft.com
MICROSOFT-CORP-MSN-AS-BLOCK
IE
whitelisted
4
System
192.168.100.255:137
—
—
—
whitelisted
5404
backgroundTaskHost.exe
20.223.35.26:443
arc.msn.com
MICROSOFT-CORP-MSN-AS-BLOCK
IE
whitelisted

DNS requests

Domain
IP
Reputation
google.com
  • 216.58.212.174
whitelisted
settings-win.data.microsoft.com
  • 4.231.128.59
whitelisted
crl.microsoft.com
  • 23.48.23.159
  • 23.48.23.144
  • 23.48.23.194
  • 23.48.23.149
  • 23.48.23.193
  • 23.48.23.139
  • 23.48.23.137
  • 23.48.23.155
  • 23.48.23.138
whitelisted
login.live.com
  • 20.190.160.22
  • 20.190.160.132
  • 40.126.32.138
  • 40.126.32.136
  • 20.190.160.5
  • 20.190.160.131
  • 20.190.160.2
  • 40.126.32.134
whitelisted
ocsp.digicert.com
  • 23.54.109.203
whitelisted
client.wns.windows.com
  • 40.115.3.253
whitelisted
arc.msn.com
  • 20.223.35.26
whitelisted
ns1.chopbell.com
  • —
malicious
ns1.chopbell.net
  • 34.136.111.81
  • 34.132.102.6
malicious
slscr.update.microsoft.com
  • 172.202.163.200
whitelisted

Threats

No threats detected
No debug info
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Reports
1 (334)