File name:

Muestra virus.rar

Full analysis: https://app.any.run/tasks/b8ef0cc2-afff-4c0e-98db-3af5acc6c7be
Verdict: Malicious activity
Threats:

Ransomware is a type of malicious software that locks users out of their system or data using different methods to force them to pay a ransom. Most often, such programs encrypt files on an infected machine and demand a fee to be paid in exchange for the decryption key. Additionally, such programs can be used to steal sensitive information from the compromised computer and even conduct DDoS attacks against affected organizations to pressure them into paying.

Analysis date: December 13, 2024, 22:00:11
OS: Windows 10 Professional (build: 19045, 64 bit)
Tags:
neshta
stealer
ransomware
arch-exec
arch-doc
Indicators:
MIME: application/x-rar
File info: RAR archive data, v5
MD5:

D6BF3FCC9908D51048F50D26495E00CA

SHA1:

D1C81522D1F7FA61922737D2F6A93651CF0A7CAB

SHA256:

97D7A46B26FDBBBC94C535AAA6E31CB637F61708633F62F18C33E64FAF67548E

SSDEEP:

98304:I268BhexPXK6xPF53WBJag/Wta6OQNay4+q74xUSFI35CBz5SAc3TQaHTC4e6AMr:T8EN

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

    • NESHTA mutex has been found

      • defi1328_visual.exe (PID: 6820)
    • Actions looks like stealing of personal data

      • defi1328_visual.exe (PID: 6820)
    • Deletes shadow copies

      • cmd.exe (PID: 7104)
    • Renames files like ransomware

      • defi1328_visual.exe (PID: 6952)
  • SUSPICIOUS

    • Reads security settings of Internet Explorer

      • WinRAR.exe (PID: 6748)
      • WinRAR.exe (PID: 1668)
      • defi1328_visual.exe (PID: 6820)
      • defi1328_visual.exe (PID: 6864)
    • Mutex name with non-standard characters

      • defi1328_visual.exe (PID: 6820)
    • Executable content was dropped or overwritten

      • defi1328_visual.exe (PID: 6820)
    • Write to the desktop.ini file (may be used to cloak folders)

      • WinRAR.exe (PID: 6748)
    • Application launched itself

      • WinRAR.exe (PID: 1668)
      • defi1328_visual.exe (PID: 6864)
    • Starts CMD.EXE for commands execution

      • defi1328_visual.exe (PID: 6952)
    • Executes as Windows Service

      • wbengine.exe (PID: 2828)
      • VSSVC.exe (PID: 188)
      • vds.exe (PID: 396)
  • INFO

    • The sample compiled with english language support

      • WinRAR.exe (PID: 6748)
      • WinRAR.exe (PID: 1668)
    • Reads the computer name

      • defi1328_visual.exe (PID: 6864)
      • defi1328_visual.exe (PID: 6820)
      • defi1328_visual.exe (PID: 6952)
      • OfficeClickToRun.exe (PID: 6440)
    • Process checks computer location settings

      • defi1328_visual.exe (PID: 6820)
      • defi1328_visual.exe (PID: 6864)
    • Executable content was dropped or overwritten

      • WinRAR.exe (PID: 6748)
    • Checks supported languages

      • defi1328_visual.exe (PID: 6820)
      • defi1328_visual.exe (PID: 6952)
      • defi1328_visual.exe (PID: 6864)
      • OfficeClickToRun.exe (PID: 6440)
    • The process uses the downloaded file

      • defi1328_visual.exe (PID: 6820)
      • WinRAR.exe (PID: 1668)
      • WinRAR.exe (PID: 6748)
      • defi1328_visual.exe (PID: 6864)
    • Reads the machine GUID from the registry

      • defi1328_visual.exe (PID: 6864)
      • defi1328_visual.exe (PID: 6952)
      • OfficeClickToRun.exe (PID: 6440)
    • Create files in a temporary directory

      • defi1328_visual.exe (PID: 6820)
    • Reads Windows Product ID

      • defi1328_visual.exe (PID: 6952)
    • Sends debugging messages

      • wbadmin.exe (PID: 3364)
    • Reads security settings of Internet Explorer

      • WMIC.exe (PID: 4444)
    • Reads Microsoft Office registry keys

      • OfficeClickToRun.exe (PID: 6440)
    • Executes as Windows Service

      • OfficeClickToRun.exe (PID: 6440)
    • Creates files in the program directory

      • defi1328_visual.exe (PID: 6952)
    • Checks proxy server information

      • OfficeClickToRun.exe (PID: 6440)
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

ArchivedFileName: Downloads.rar
OperatingSystem: Win32
UncompressedSize: 3216267
CompressedSize: 3216272
FileVersion: RAR v5
No data.
screenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshot
All screenshots are available in the full report
All screenshots are available in the full report
Total processes
148
Monitored processes
16
Malicious processes
6
Suspicious processes
0

Behavior graph

Click at the process to see the details
start winrar.exe no specs winrar.exe #NESHTA defi1328_visual.exe defi1328_visual.exe no specs defi1328_visual.exe cmd.exe no specs conhost.exe no specs vssadmin.exe no specs vssvc.exe no specs wbadmin.exe wbengine.exe no specs vdsldr.exe no specs vds.exe no specs wmic.exe no specs officeclicktorun.exe rundll32.exe no specs

Process information

PID
CMD
Path
Indicators
Parent process
1668"C:\Program Files\WinRAR\WinRAR.exe" "C:\Users\admin\AppData\Local\Temp\Muestra virus.rar"C:\Program Files\WinRAR\WinRAR.exeexplorer.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
6748"C:\Program Files\WinRAR\WinRAR.exe" C:\Users\admin\AppData\Local\Temp\Rar$DIb1668.3546\Downloads.rarC:\Program Files\WinRAR\WinRAR.exe
WinRAR.exe
User:
admin
Company:
Alexander Roshal
Integrity Level:
MEDIUM
Description:
WinRAR archiver
Version:
5.91.0
Modules
Images
c:\program files\winrar\winrar.exe
c:\windows\system32\ntdll.dll
c:\windows\system32\kernel32.dll
c:\windows\system32\kernelbase.dll
c:\windows\system32\user32.dll
c:\windows\system32\win32u.dll
c:\windows\system32\gdi32.dll
c:\windows\system32\gdi32full.dll
c:\windows\system32\msvcp_win.dll
c:\windows\system32\ucrtbase.dll
6820"C:\Users\admin\AppData\Local\Temp\Rar$EXa6748.4420\defi1328_visual.exe" C:\Users\admin\AppData\Local\Temp\Rar$EXa6748.4420\defi1328_visual.exe
WinRAR.exe
User:
admin
Integrity Level:
MEDIUM
Exit code:
0
Modules
Images
c:\users\admin\appdata\local\temp\rar$exa6748.4420\defi1328_visual.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
6864"C:\Users\admin\AppData\Local\Temp\3582-490\defi1328_visual.exe" C:\Users\admin\AppData\Local\Temp\3582-490\defi1328_visual.exedefi1328_visual.exe
User:
admin
Integrity Level:
MEDIUM
Exit code:
0
Modules
Images
c:\users\admin\appdata\local\temp\3582-490\defi1328_visual.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
6952"C:\Users\admin\AppData\Local\Temp\3582-490\defi1328_visual.exe" eC:\Users\admin\AppData\Local\Temp\3582-490\defi1328_visual.exe
defi1328_visual.exe
User:
admin
Integrity Level:
HIGH
Modules
Images
c:\users\admin\appdata\local\temp\3582-490\defi1328_visual.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
7104"C:\WINDOWS\system32\cmd.exe"C:\Windows\System32\cmd.exedefi1328_visual.exe
User:
admin
Company:
Microsoft Corporation
Integrity Level:
HIGH
Description:
Windows Command Processor
Exit code:
0
Version:
10.0.19041.1 (WinBuild.160101.0800)
Modules
Images
c:\windows\system32\cmd.exe
c:\windows\system32\ntdll.dll
c:\windows\system32\kernel32.dll
c:\windows\system32\kernelbase.dll
c:\windows\system32\apphelp.dll
c:\windows\system32\msvcrt.dll
c:\windows\system32\combase.dll
c:\windows\system32\ucrtbase.dll
c:\windows\system32\rpcrt4.dll
c:\windows\system32\winbrand.dll
7112\??\C:\WINDOWS\system32\conhost.exe 0xffffffff -ForceV1C:\Windows\System32\conhost.execmd.exe
User:
admin
Company:
Microsoft Corporation
Integrity Level:
HIGH
Description:
Console Window Host
Exit code:
0
Version:
10.0.19041.1 (WinBuild.160101.0800)
Modules
Images
c:\windows\system32\conhost.exe
c:\windows\system32\ntdll.dll
c:\windows\system32\kernel32.dll
c:\windows\system32\kernelbase.dll
c:\windows\system32\msvcp_win.dll
c:\windows\system32\ucrtbase.dll
c:\windows\system32\shcore.dll
c:\windows\system32\msvcrt.dll
c:\windows\system32\combase.dll
c:\windows\system32\rpcrt4.dll
7156vssadmin delete shadows /all /quietC:\Windows\System32\vssadmin.execmd.exe
User:
admin
Company:
Microsoft Corporation
Integrity Level:
HIGH
Description:
Command Line Interface for Microsoft® Volume Shadow Copy Service
Exit code:
2
Version:
10.0.19041.1 (WinBuild.160101.0800)
Modules
Images
c:\windows\system32\vssadmin.exe
c:\windows\system32\ntdll.dll
c:\windows\system32\kernel32.dll
c:\windows\system32\kernelbase.dll
c:\windows\system32\apphelp.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
188C:\WINDOWS\system32\vssvc.exeC:\Windows\System32\VSSVC.exeservices.exe
User:
SYSTEM
Company:
Microsoft Corporation
Integrity Level:
SYSTEM
Description:
Microsoft® Volume Shadow Copy Service
Exit code:
0
Version:
10.0.19041.1 (WinBuild.160101.0800)
Modules
Images
c:\windows\system32\vssvc.exe
c:\windows\system32\ntdll.dll
c:\windows\system32\kernel32.dll
c:\windows\system32\kernelbase.dll
c:\windows\system32\msvcrt.dll
c:\windows\system32\oleaut32.dll
c:\windows\system32\msvcp_win.dll
c:\windows\system32\ucrtbase.dll
c:\windows\system32\combase.dll
c:\windows\system32\rpcrt4.dll
3364wbadmin delete catalog -quietC:\Windows\System32\wbadmin.exe
cmd.exe
User:
admin
Company:
Microsoft Corporation
Integrity Level:
HIGH
Description:
Command Line Interface for Microsoft® BLB Backup
Exit code:
0
Version:
10.0.19041.1 (WinBuild.160101.0800)
Modules
Images
c:\windows\system32\wbadmin.exe
c:\windows\system32\ntdll.dll
c:\windows\system32\kernel32.dll
c:\windows\system32\kernelbase.dll
c:\windows\system32\apphelp.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
Total events
5 726
Read events
5 709
Write events
17
Delete events
0

Modification events

(PID) Process:(1668) WinRAR.exeKey:HKEY_CURRENT_USER\SOFTWARE\WinRAR\ArcHistory
Operation:writeName:3
Value:
C:\Users\admin\Desktop\preferences.zip
(PID) Process:(1668) WinRAR.exeKey:HKEY_CURRENT_USER\SOFTWARE\WinRAR\ArcHistory
Operation:writeName:2
Value:
C:\Users\admin\Desktop\chromium_ext.zip
(PID) Process:(1668) WinRAR.exeKey:HKEY_CURRENT_USER\SOFTWARE\WinRAR\ArcHistory
Operation:writeName:1
Value:
C:\Users\admin\Desktop\omni_23_10_2024_.zip
(PID) Process:(1668) WinRAR.exeKey:HKEY_CURRENT_USER\SOFTWARE\WinRAR\ArcHistory
Operation:writeName:0
Value:
C:\Users\admin\AppData\Local\Temp\Muestra virus.rar
(PID) Process:(1668) WinRAR.exeKey:HKEY_CURRENT_USER\SOFTWARE\WinRAR\FileList\FileColumnWidths
Operation:writeName:name
Value:
120
(PID) Process:(1668) WinRAR.exeKey:HKEY_CURRENT_USER\SOFTWARE\WinRAR\FileList\FileColumnWidths
Operation:writeName:size
Value:
80
(PID) Process:(1668) WinRAR.exeKey:HKEY_CURRENT_USER\SOFTWARE\WinRAR\FileList\FileColumnWidths
Operation:writeName:type
Value:
120
(PID) Process:(1668) WinRAR.exeKey:HKEY_CURRENT_USER\SOFTWARE\WinRAR\FileList\FileColumnWidths
Operation:writeName:mtime
Value:
100
(PID) Process:(1668) WinRAR.exeKey:HKEY_CURRENT_USER\SOFTWARE\WinRAR\Interface
Operation:writeName:ShowPassword
Value:
0
(PID) Process:(6748) WinRAR.exeKey:HKEY_CURRENT_USER\SOFTWARE\WinRAR\ArcHistory
Operation:writeName:3
Value:
C:\Users\admin\Desktop\chromium_ext.zip
Executable files
25
Suspicious files
2 503
Text files
771
Unknown types
3

Dropped files

PID
Process
Filename
Type
6748WinRAR.exeC:\Users\admin\AppData\Local\Temp\Rar$EXa6748.4420\mimikatz\x32\mimikatz.exeexecutable
MD5:67A257339539267DDCC618C307ECF958
SHA256:16BA1938FF3D3D0B13FB8B6FB32B9234A590A0FD168D8376D63CBCB4B21EEF62
6748WinRAR.exeC:\Users\admin\AppData\Local\Temp\Rar$EXa6748.4420\mimikatz\x32\mimilove.exeexecutable
MD5:FBF9F426FF0F4B147732490B8A547A4E
SHA256:FAEEBC642310D18070456BE8C2B36307A634FB331EB73BB143FF1424841BBD2A
6748WinRAR.exeC:\Users\admin\AppData\Local\Temp\Rar$EXa6748.4420\mimikatz\+README-WARNING+.txttext
MD5:4FC671B220184FCA4FC0CE7504794F57
SHA256:8B0CD904BC04E2E0F37184C62CECEB09A3DCFC23EE64C56E96E8FD7FDD93390D
6748WinRAR.exeC:\Users\admin\AppData\Local\Temp\Rar$EXa6748.4420\mimikatz\x64\+README-WARNING+.txttext
MD5:4FC671B220184FCA4FC0CE7504794F57
SHA256:8B0CD904BC04E2E0F37184C62CECEB09A3DCFC23EE64C56E96E8FD7FDD93390D
6748WinRAR.exeC:\Users\admin\AppData\Local\Temp\Rar$EXa6748.4420\mimikatz\x64\mimilib.dllexecutable
MD5:0ABF12EB4AD193AE15DD9A0C547FCEDA
SHA256:9674017CADAC13DF391C6EEB995052F40A513D2A6A13E8DE9B3A799112E8F770
6748WinRAR.exeC:\Users\admin\AppData\Local\Temp\Rar$EXa6748.4420\mimikatz\x64\mimikatz.log.[1707EB7A].[[email protected]].defi1328binary
MD5:3792DD2D26EF7BD660147FEF474C25AE
SHA256:45518319D6AEB67CBE390854BDF5FD7A78BCDD72D656DE104FFCEC6A864C7555
6748WinRAR.exeC:\Users\admin\AppData\Local\Temp\Rar$EXa6748.4420\defi1328_visual.exeexecutable
MD5:7A0EC0DB72B084F46348B055C7CE4A34
SHA256:E48904C3A631F353F6BF1CD3C2509464C86454DB1D29BFF26B489FFA563788D9
6748WinRAR.exeC:\Users\admin\AppData\Local\Temp\Rar$EXa6748.4420\mimikatz\1.txt.[1707EB7A].[[email protected]].defi1328binary
MD5:3DD79E672BE7BD0C2AF38C1313089C2E
SHA256:4080747031C20A4FF3EC7DBE2AB4835DA80E1C1C0A3F3617542AB59838CC96C0
6748WinRAR.exeC:\Users\admin\AppData\Local\Temp\Rar$EXa6748.4420\mimikatz\x32.bat.[1707EB7A].[[email protected]].defi1328binary
MD5:A007D1ABCF5C1BB187651159CD628598
SHA256:627AF5C6BF532F7E9D647463933816F7BE93D5FC8F868ED57B3711AF03EE0036
6748WinRAR.exeC:\Users\admin\AppData\Local\Temp\Rar$EXa6748.4420\mimikatz\mimicom.idl.[1707EB7A].[[email protected]].defi1328binary
MD5:E192AAFFADCAB8AA0DCA521667B1A5B7
SHA256:246944F4C57E49D764A7F21CCA97BAC94E2DA291AF8FDC9C4956F704F40BF26C
Download PCAP, analyze network streams, HTTP content and a lot more at the full report
HTTP(S) requests
7
TCP/UDP connections
34
DNS requests
23
Threats
0

HTTP requests

PID
Process
Method
HTTP Code
IP
URL
CN
Type
Size
Reputation
6288
backgroundTaskHost.exe
GET
200
192.229.221.95:80
http://ocsp.digicert.com/MFEwTzBNMEswSTAJBgUrDgMCGgUABBQ50otx%2Fh0Ztl%2Bz8SiPI7wEWVxDlQQUTiJUIBiV5uNu5g%2F6%2BrkS7QYXjzkCEAn5bsKVVV8kdJ6vHl3O1J0%3D
unknown
whitelisted
1176
svchost.exe
GET
200
192.229.221.95:80
http://ocsp.digicert.com/MFEwTzBNMEswSTAJBgUrDgMCGgUABBSAUQYBMq2awn1Rh6Doh%2FsBYgFV7gQUA95QNVbRTLtm8KPiGxvDl7I90VUCEAJ0LqoXyo4hxxe7H%2Fz9DKA%3D
unknown
whitelisted
6236
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
2.16.241.19:80
http://crl.microsoft.com/pki/crl/products/MicRooCerAut2011_2011_03_22.crl
unknown
whitelisted
6236
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
5064
SearchApp.exe
GET
200
192.229.221.95:80
http://ocsp.digicert.com/MFEwTzBNMEswSTAJBgUrDgMCGgUABBTrjrydRyt%2BApF3GSPypfHBxR5XtQQUs9tIpPmhxdiuNkHMEWNpYim8S8YCEAI5PUjXAkJafLQcAAsO18o%3D
unknown
whitelisted
GET
200
184.30.21.171:80
http://www.microsoft.com/pkiops/crl/MicSecSerCA2011_2011-10-18.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
1684
svchost.exe
4.231.128.59:443
settings-win.data.microsoft.com
MICROSOFT-CORP-MSN-AS-BLOCK
IE
whitelisted
4712
MoUsoCoreWorker.exe
4.231.128.59:443
settings-win.data.microsoft.com
MICROSOFT-CORP-MSN-AS-BLOCK
IE
whitelisted
4.231.128.59:443
settings-win.data.microsoft.com
MICROSOFT-CORP-MSN-AS-BLOCK
IE
whitelisted
2.16.241.19:80
crl.microsoft.com
Akamai International B.V.
DE
whitelisted
184.30.21.171:80
www.microsoft.com
AKAMAI-AS
DE
whitelisted
5064
SearchApp.exe
2.19.96.8:443
www.bing.com
Akamai International B.V.
DE
whitelisted
5064
SearchApp.exe
192.229.221.95:80
ocsp.digicert.com
EDGECAST
US
whitelisted
4
System
192.168.100.255:138
whitelisted
1176
svchost.exe
40.126.32.68:443
login.live.com
MICROSOFT-CORP-MSN-AS-BLOCK
NL
whitelisted

DNS requests

Domain
IP
Reputation
settings-win.data.microsoft.com
  • 4.231.128.59
  • 51.104.136.2
whitelisted
google.com
  • 142.250.185.78
whitelisted
crl.microsoft.com
  • 2.16.241.19
  • 2.16.241.12
whitelisted
www.microsoft.com
  • 184.30.21.171
whitelisted
www.bing.com
  • 2.19.96.8
  • 2.19.96.129
  • 2.19.96.18
  • 2.19.96.27
  • 2.19.96.16
  • 2.19.96.128
  • 2.19.96.26
  • 2.19.96.123
  • 2.19.96.11
whitelisted
ocsp.digicert.com
  • 192.229.221.95
whitelisted
login.live.com
  • 40.126.32.68
  • 20.190.160.20
  • 20.190.160.17
  • 40.126.32.138
  • 20.190.160.22
  • 40.126.32.72
  • 40.126.32.136
  • 40.126.32.133
whitelisted
go.microsoft.com
  • 184.28.89.167
whitelisted
arc.msn.com
  • 20.199.58.43
whitelisted
slscr.update.microsoft.com
  • 172.202.163.200
whitelisted

Threats

No threats detected
Process
Message
wbadmin.exe
Invalid parameter passed to C runtime function.