File name:

1 (176)

Full analysis: https://app.any.run/tasks/f5982b3b-e24c-4901-aca9-6722f7eb519d
Verdict: Malicious activity
Analysis date: March 24, 2025, 16:41:25
OS: Windows 10 Professional (build: 19045, 64 bit)
Tags:
ludbaruma
blocker
dropper
Indicators:
MIME: application/vnd.microsoft.portable-executable
File info: PE32 executable (GUI) Intel 80386, for MS Windows, UPX compressed, 3 sections
MD5:

3FCA203236340F9B2C1C646B5A393920

SHA1:

0D5CAD58157DE8AF708B53622E15B316BA1A2CAF

SHA256:

73F705F33820BFE41D276FAD9BF1AFCB45AD6750674AE86C31AF03AF518DAF0B

SSDEEP:

768:8+my0TndyrYxIykm8ZnA4Hq+Jpb8ZyVABVVVVVVWll:BmJbwrYKyp8ZnASq+Y6oVVVVVVWll

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

    • Changes the autorun value in the registry

      • 1 (176).exe (PID: 7436)

    • The process uses screensaver hijack for persistence

      • 1 (176).exe (PID: 7436)

    • LUDBARUMA has been detected

      • 1 (176).exe (PID: 7436)

  • SUSPICIOUS

    • Creates file in the systems drive root

      • 1 (176).exe (PID: 7436)

    • Executable content was dropped or overwritten

      • 1 (176).exe (PID: 7436)

    • The process creates files with name similar to system file names

      • 1 (176).exe (PID: 7436)

  • INFO

    • Creates files or folders in the user directory

      • 1 (176).exe (PID: 7436)

    • The sample compiled with english language support

      • 1 (176).exe (PID: 7436)

    • Create files in a temporary directory

      • 1 (176).exe (PID: 7436)

    • Failed to create an executable file in Windows directory

      • 1 (176).exe (PID: 7436)

    • Checks supported languages

      • 1 (176).exe (PID: 7436)
Find more information about signature artifacts and mapping to MITRE ATT&CK™ MATRIX at the full report
No Malware configuration.

TRiD

.exe | UPX compressed Win32 Executable (43.5)
.exe | Win32 EXE Yoda's Crypter (42.7)
.exe | Win32 Executable (generic) (7.2)
.exe | Generic Win/DOS Executable (3.2)
.exe | DOS Executable Generic (3.2)

EXIF

EXE

MachineType: Intel 386 or later, and compatibles
TimeStamp: 2006:07:15 11:26:47+00:00
ImageFileCharacteristics: No relocs, Executable, No line numbers, No symbols, 32-bit
PEType: PE32
LinkerVersion: 6
CodeSize: 24576
InitializedDataSize: 24576
UninitializedDataSize: 90112
EntryPoint: 0x1c230
OSVersion: 4
ImageVersion: 1.12
SubsystemVersion: 4
Subsystem: Windows GUI
FileVersionNumber: 1.12.0.1985
ProductVersionNumber: 1.12.0.1985
FileFlagsMask: 0x0000
FileFlags: (none)
FileOS: Win32
ObjectFileType: Executable application
FileSubtype: -
LanguageCode: English (U.S.)
CharacterSet: Unicode
ProductName: 4k51k4
FileVersion: 1.12.1985
ProductVersion: 1.12.1985
InternalName: 4K51K4
OriginalFileName: 4K51K4.exe
No data.
screenshot
All screenshots are available in the full report
All screenshots are available in the full report
Total processes
141
Monitored processes
4
Malicious processes
1
Suspicious processes
0

Behavior graph

Click at the process to see the details
start #LUDBARUMA 1 (176).exe sppextcomobj.exe no specs slui.exe slui.exe no specs

Process information

PID
CMD
Path
Indicators
Parent process
7084C:\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
7436"C:\Users\admin\AppData\Local\Temp\1 (176).exe" C:\Users\admin\AppData\Local\Temp\1 (176).exe
explorer.exe
User:
admin
Integrity Level:
MEDIUM
Exit code:
0
Version:
1.12.1985
Modules
Images
c:\users\admin\appdata\local\temp\1 (176).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\msvbvm60.dll
7528C:\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
7560"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
Total events
628
Read events
617
Write events
11
Delete events
0

Modification events

(PID) Process:(7436) 1 (176).exeKey:HKEY_CURRENT_USER\Control Panel\Desktop
Operation:writeName:SCRNSAVE.EXE
Value:
C:\WINDOWS\system32\MRHELL~1.SCR
(PID) Process:(7436) 1 (176).exeKey:HKEY_CURRENT_USER\Control Panel\Desktop
Operation:writeName:ScreenSaverIsSecure
Value:
0
(PID) Process:(7436) 1 (176).exeKey:HKEY_CURRENT_USER\Control Panel\Desktop
Operation:writeName:ScreenSaveTimeOut
Value:
600
(PID) Process:(7436) 1 (176).exeKey:HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion\Run
Operation:writeName:4k51k4
Value:
C:\WINDOWS\4k51k4.exe
(PID) Process:(7436) 1 (176).exeKey:HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion\Run
Operation:writeName:MSMSGS
Value:
C:\Users\admin\Local Settings\Application Data\WINDOWS\WINLOGON.EXE
(PID) Process:(7436) 1 (176).exeKey:HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion\Run
Operation:writeName:Serviceadmin
Value:
C:\Users\admin\Local Settings\Application Data\WINDOWS\SERVICES.EXE
(PID) Process:(7436) 1 (176).exeKey:HKEY_LOCAL_MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run
Operation:writeName:Logonadmin
Value:
C:\Users\admin\Local Settings\Application Data\WINDOWS\CSRSS.EXE
(PID) Process:(7436) 1 (176).exeKey:HKEY_LOCAL_MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run
Operation:writeName:System Monitoring
Value:
C:\Users\admin\Local Settings\Application Data\WINDOWS\LSASS.EXE
(PID) Process:(7436) 1 (176).exeKey:HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System
Operation:writeName:DisableTaskMgr
Value:
1
(PID) Process:(7436) 1 (176).exeKey:HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer
Operation:writeName:NoFolderOptions
Value:
1
Executable files
11
Suspicious files
1
Text files
1
Unknown types
0

Dropped files

PID
Process
Filename
Type
74361 (176).exeC:\Users\admin\AppData\Local\csrss.exeexecutable
MD5:3FCA203236340F9B2C1C646B5A393920
SHA256:73F705F33820BFE41D276FAD9BF1AFCB45AD6750674AE86C31AF03AF518DAF0B
74361 (176).exeC:\Users\admin\AppData\Local\lsass.exeexecutable
MD5:3FCA203236340F9B2C1C646B5A393920
SHA256:73F705F33820BFE41D276FAD9BF1AFCB45AD6750674AE86C31AF03AF518DAF0B
74361 (176).exeC:\Users\admin\AppData\Local\smss.exeexecutable
MD5:3FCA203236340F9B2C1C646B5A393920
SHA256:73F705F33820BFE41D276FAD9BF1AFCB45AD6750674AE86C31AF03AF518DAF0B
74361 (176).exeC:\Users\admin\AppData\Local\WINDOWS\WINLOGON.EXEexecutable
MD5:3FCA203236340F9B2C1C646B5A393920
SHA256:73F705F33820BFE41D276FAD9BF1AFCB45AD6750674AE86C31AF03AF518DAF0B
74361 (176).exeC:\Users\admin\AppData\Local\WINDOWS\SERVICES.EXEexecutable
MD5:3FCA203236340F9B2C1C646B5A393920
SHA256:73F705F33820BFE41D276FAD9BF1AFCB45AD6750674AE86C31AF03AF518DAF0B
74361 (176).exeC:\Users\admin\AppData\Local\WINDOWS\LSASS.EXEexecutable
MD5:3FCA203236340F9B2C1C646B5A393920
SHA256:73F705F33820BFE41D276FAD9BF1AFCB45AD6750674AE86C31AF03AF518DAF0B
74361 (176).exeC:\Users\admin\AppData\Local\winlogon.exeexecutable
MD5:3FCA203236340F9B2C1C646B5A393920
SHA256:73F705F33820BFE41D276FAD9BF1AFCB45AD6750674AE86C31AF03AF518DAF0B
74361 (176).exeC:\Users\admin\AppData\Local\services.exeexecutable
MD5:3FCA203236340F9B2C1C646B5A393920
SHA256:73F705F33820BFE41D276FAD9BF1AFCB45AD6750674AE86C31AF03AF518DAF0B
74361 (176).exeC:\Users\admin\AppData\Local\WINDOWS\SMSS.EXEexecutable
MD5:3FCA203236340F9B2C1C646B5A393920
SHA256:73F705F33820BFE41D276FAD9BF1AFCB45AD6750674AE86C31AF03AF518DAF0B
74361 (176).exeC:\Users\admin\AppData\Local\Temp\~DF5C8AC11B06770AE1.TMPbinary
MD5:45C95D6D1C1E1D17A1C68B4DDFA2F95B
SHA256:669209ADBEB0618B15C5E4D49FD8046FDD226DF2A0581DCEC7AFACB4B464A524
Download PCAP, analyze network streams, HTTP content and a lot more at the full report
HTTP(S) requests
5
TCP/UDP connections
23
DNS requests
17
Threats
0

HTTP requests

PID
Process
Method
HTTP Code
IP
URL
CN
Type
Size
Reputation
5496
MoUsoCoreWorker.exe
GET
200
2.19.11.105:80
http://crl.microsoft.com/pki/crl/products/MicRooCerAut2011_2011_03_22.crl
unknown
—
—
whitelisted
6544
svchost.exe
GET
200
2.23.77.188:80
http://ocsp.digicert.com/MFEwTzBNMEswSTAJBgUrDgMCGgUABBSAUQYBMq2awn1Rh6Doh%2FsBYgFV7gQUA95QNVbRTLtm8KPiGxvDl7I90VUCEAJ0LqoXyo4hxxe7H%2Fz9DKA%3D
unknown
—
—
whitelisted
4488
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
7640
backgroundTaskHost.exe
GET
200
184.30.131.245:80
http://ocsp.digicert.com/MFEwTzBNMEswSTAJBgUrDgMCGgUABBQ50otx%2Fh0Ztl%2Bz8SiPI7wEWVxDlQQUTiJUIBiV5uNu5g%2F6%2BrkS7QYXjzkCEAUZZSZEml49Gjh0j13P68w%3D
unknown
—
—
whitelisted
4488
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
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
—
—
20.73.194.208:443
settings-win.data.microsoft.com
MICROSOFT-CORP-MSN-AS-BLOCK
NL
whitelisted
4
System
192.168.100.255:138
—
—
—
whitelisted
5496
MoUsoCoreWorker.exe
2.19.11.105:80
crl.microsoft.com
Elisa Oyj
NL
whitelisted
3216
svchost.exe
40.115.3.253:443
client.wns.windows.com
MICROSOFT-CORP-MSN-AS-BLOCK
NL
whitelisted
6544
svchost.exe
20.190.159.75:443
login.live.com
MICROSOFT-CORP-MSN-AS-BLOCK
IE
whitelisted
6544
svchost.exe
2.23.77.188:80
ocsp.digicert.com
AKAMAI-AS
DE
whitelisted
6404
RUXIMICS.exe
20.73.194.208:443
settings-win.data.microsoft.com
MICROSOFT-CORP-MSN-AS-BLOCK
NL
whitelisted
2104
svchost.exe
51.124.78.146:443
settings-win.data.microsoft.com
MICROSOFT-CORP-MSN-AS-BLOCK
NL
whitelisted
7640
backgroundTaskHost.exe
20.105.99.58:443
arc.msn.com
MICROSOFT-CORP-MSN-AS-BLOCK
IE
whitelisted

DNS requests

Domain
IP
Reputation
google.com
  • 142.250.185.78
whitelisted
settings-win.data.microsoft.com
  • 20.73.194.208
  • 51.124.78.146
whitelisted
crl.microsoft.com
  • 2.19.11.105
  • 2.19.11.120
whitelisted
client.wns.windows.com
  • 40.115.3.253
  • 40.113.110.67
whitelisted
login.live.com
  • 20.190.159.75
  • 40.126.31.128
  • 40.126.31.130
  • 20.190.159.128
  • 40.126.31.73
  • 40.126.31.129
  • 40.126.31.1
  • 20.190.159.2
whitelisted
ocsp.digicert.com
  • 2.23.77.188
  • 184.30.131.245
whitelisted
arc.msn.com
  • 20.105.99.58
whitelisted
slscr.update.microsoft.com
  • 52.149.20.212
whitelisted
www.microsoft.com
  • 23.35.229.160
whitelisted
fe3cr.delivery.mp.microsoft.com
  • 13.95.31.18
whitelisted

Threats

No threats detected
No debug info
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Reports
1 (176)