File name:

npcap-1.79.exe

Full analysis: https://app.any.run/tasks/b5c86aed-24e5-4507-abac-7fd2cf07aa3e
Verdict: Malicious activity
Analysis date: April 13, 2024, 07:05:22
OS: Windows 7 Professional Service Pack 1 (build: 7601, 32 bit)
Indicators:
MIME: application/x-dosexec
File info: PE32 executable (GUI) Intel 80386, for MS Windows, Nullsoft Installer self-extracting archive
MD5:

A4D7E47DF742F62080BF845D606045B4

SHA1:

723743DC9FA4A190452A7FFC971ADFAAC91606FA

SHA256:

A95577EBBC67FC45B319E2EF3A55F4E9B211FE82ED4CB9D8BE6B1A9E2425CE53

SSDEEP:

49152:D6RKhVd9S1OsrcrMPSqfAQ4HgmY8mMiXZDeEN7sWv3Xu9uJRdSKpt6qUI2fqEFNI:D6YhsoIPSNvY8mMicEN7sGO9cRb6qxGu

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

    • Drops the executable file immediately after the start

      • npcap-1.79.exe (PID: 2408)
      • npcap-1.79.exe (PID: 2780)
      • NPFInstall.exe (PID: 4020)
      • drvinst.exe (PID: 3840)

    • Creates a writable file in the system directory

      • npcap-1.79.exe (PID: 2408)
      • drvinst.exe (PID: 3840)

    • Run PowerShell with an invisible window

      • powershell.exe (PID: 3800)
      • powershell.exe (PID: 4080)
      • powershell.exe (PID: 572)
      • powershell.exe (PID: 296)

  • SUSPICIOUS

    • Malware-specific behavior (creating "System.dll" in Temp)

      • npcap-1.79.exe (PID: 2408)
      • npcap-1.79.exe (PID: 2780)

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

      • npcap-1.79.exe (PID: 2408)
      • npcap-1.79.exe (PID: 2780)

    • Executable content was dropped or overwritten

      • npcap-1.79.exe (PID: 2408)
      • npcap-1.79.exe (PID: 2780)
      • NPFInstall.exe (PID: 4020)
      • drvinst.exe (PID: 3840)

    • Starts CMD.EXE for commands execution

      • ns21FD.tmp (PID: 2208)

    • Starts application with an unusual extension

      • npcap-1.79.exe (PID: 2408)

    • Uses WMIC.EXE to obtain quick Fix Engineering (patches) data

      • cmd.exe (PID: 2792)

    • Using 'findstr.exe' to search for text patterns in files and output

      • cmd.exe (PID: 2792)

    • Reads the Internet Settings

      • WMIC.exe (PID: 1824)

    • Drops a system driver (possible attempt to evade defenses)

      • npcap-1.79.exe (PID: 2408)
      • NPFInstall.exe (PID: 4020)
      • drvinst.exe (PID: 3840)

    • Starts POWERSHELL.EXE for commands execution

      • ns4F68.tmp (PID: 712)
      • ns5A1A.tmp (PID: 3312)
      • ns5F4C.tmp (PID: 1504)
      • ns541C.tmp (PID: 448)

    • Creates a software uninstall entry

      • npcap-1.79.exe (PID: 2408)

    • The process hide an interactive prompt from the user

      • ns4F68.tmp (PID: 712)
      • ns5A1A.tmp (PID: 3312)
      • ns5F4C.tmp (PID: 1504)
      • ns541C.tmp (PID: 448)

    • The process bypasses the loading of PowerShell profile settings

      • ns4F68.tmp (PID: 712)
      • ns541C.tmp (PID: 448)
      • ns5A1A.tmp (PID: 3312)
      • ns5F4C.tmp (PID: 1504)

    • Adds/modifies Windows certificates

      • certutil.exe (PID: 3048)

    • Reads settings of System Certificates

      • rundll32.exe (PID: 3664)

    • Creates files in the driver directory

      • drvinst.exe (PID: 3840)

    • Checks Windows Trust Settings

      • drvinst.exe (PID: 3840)

  • INFO

    • Checks supported languages

      • npcap-1.79.exe (PID: 2408)
      • ns21FD.tmp (PID: 2208)
      • npcap-1.79.exe (PID: 2780)
      • ns4D25.tmp (PID: 3680)
      • NPFInstall.exe (PID: 3980)
      • ns4F68.tmp (PID: 712)
      • ns59AC.tmp (PID: 1592)
      • ns593E.tmp (PID: 124)
      • ns5A1A.tmp (PID: 3312)
      • ns5F4C.tmp (PID: 1504)
      • ns6558.tmp (PID: 3040)
      • ns65C7.tmp (PID: 3016)
      • ns541C.tmp (PID: 448)
      • ns64DA.tmp (PID: 3472)
      • ns6645.tmp (PID: 3376)
      • NPFInstall.exe (PID: 1288)
      • NPFInstall.exe (PID: 4020)
      • ns67AE.tmp (PID: 3816)
      • drvinst.exe (PID: 3840)
      • ns6730.tmp (PID: 3644)
      • NPFInstall.exe (PID: 3548)

    • Reads the computer name

      • npcap-1.79.exe (PID: 2408)
      • npcap-1.79.exe (PID: 2780)
      • NPFInstall.exe (PID: 3980)
      • NPFInstall.exe (PID: 3548)
      • NPFInstall.exe (PID: 4020)
      • drvinst.exe (PID: 3840)

    • Reads Environment values

      • npcap-1.79.exe (PID: 2408)

    • Create files in a temporary directory

      • npcap-1.79.exe (PID: 2408)
      • npcap-1.79.exe (PID: 2780)
      • NPFInstall.exe (PID: 4020)

    • Creates files in the program directory

      • npcap-1.79.exe (PID: 2408)
      • NPFInstall.exe (PID: 3980)

    • Manual execution by a user

      • npcap-1.79.exe (PID: 2060)
      • npcap-1.79.exe (PID: 2780)

    • Reads the machine GUID from the registry

      • drvinst.exe (PID: 3840)
      • NPFInstall.exe (PID: 4020)

    • Reads the software policy settings

      • drvinst.exe (PID: 3840)
      • rundll32.exe (PID: 3664)

    • Reads security settings of Internet Explorer

      • rundll32.exe (PID: 3664)

    • Adds/modifies Windows certificates

      • drvinst.exe (PID: 3840)
Find more information about signature artifacts and mapping to MITRE ATT&CK™ MATRIX at the full report
No Malware configuration.

TRiD

.exe | Win32 Executable MS Visual C++ (generic) (42.2)
.exe | Win64 Executable (generic) (37.3)
.dll | Win32 Dynamic Link Library (generic) (8.8)
.exe | Win32 Executable (generic) (6)
.exe | Generic Win/DOS Executable (2.7)

EXIF

EXE

MachineType: Intel 386 or later, and compatibles
TimeStamp: 2021:07:24 22:40:31+00:00
ImageFileCharacteristics: No relocs, Executable, No line numbers, No symbols, 32-bit
PEType: PE32
LinkerVersion: 6
CodeSize: 28160
InitializedDataSize: 152576
UninitializedDataSize: 2048
EntryPoint: 0x3a59
OSVersion: 4
ImageVersion: 6
SubsystemVersion: 4
Subsystem: Windows GUI
FileVersionNumber: 5.1.79.117
ProductVersionNumber: 5.1.79.117
FileFlagsMask: 0x0000
FileFlags: (none)
FileOS: Win32
ObjectFileType: Executable application
FileSubtype: -
LanguageCode: English (U.S.)
CharacterSet: Unicode
FileDescription: Npcap 1.79 installer
FileVersion: 1.79
LegalCopyright: Copyright (c) 2023, Insecure.Com LLC. All rights reserved.
ProductName: Npcap
ProductVersion: 1.79
No data.
screenshotscreenshotscreenshotscreenshotscreenshot
All screenshots are available in the full report
All screenshots are available in the full report
Total processes
100
Monitored processes
39
Malicious processes
4
Suspicious processes
1

Behavior graph

Click at the process to see the details
start npcap-1.79.exe ns21fd.tmp no specs cmd.exe no specs wmic.exe no specs findstr.exe no specs npcap-1.79.exe no specs npcap-1.79.exe ns4d25.tmp no specs npfinstall.exe no specs ns4f68.tmp no specs powershell.exe no specs ns541c.tmp no specs powershell.exe no specs certutil.exe no specs ns593e.tmp no specs certutil.exe no specs ns59ac.tmp no specs certutil.exe no specs ns5a1a.tmp no specs powershell.exe no specs ns5f4c.tmp no specs powershell.exe no specs certutil.exe no specs ns64da.tmp no specs certutil.exe no specs ns6558.tmp no specs certutil.exe no specs ns65c7.tmp no specs certutil.exe no specs ns6645.tmp no specs npfinstall.exe no specs pnputil.exe no specs ns6730.tmp no specs npfinstall.exe no specs ns67ae.tmp no specs npfinstall.exe drvinst.exe rundll32.exe no specs npcap-1.79.exe no specs

Process information

PID
CMD
Path
Indicators
Parent process
124"C:\Users\admin\AppData\Local\Temp\nsn21CD.tmp\ns593E.tmp" certutil.exe -verifystore "Root" "0563b8630d62d75abbc8ab1e4bdfb5a899b24d43"C:\Users\admin\AppData\Local\Temp\nsn21CD.tmp\ns593E.tmp—npcap-1.79.exe
User:
admin
Integrity Level:
HIGH
Exit code:
2148073489
Modules
Images
c:\users\admin\appdata\local\temp\nsn21cd.tmp\ns593e.tmp
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\user32.dll
c:\windows\system32\gdi32.dll
296powershell.exe -NoProfile -WindowStyle Hidden -NonInteractive -Command "If (Get-ChildItem Cert:\LocalMachine\Root\0563b8630d62d75abbc8ab1e4bdfb5a899b24d43){certutil.exe -verifystore 'Root' '0563b8630d62d75abbc8ab1e4bdfb5a899b24d43';If($LASTEXITCODE -ne 0){Remove-Item Cert:\LocalMachine\Root\0563b8630d62d75abbc8ab1e4bdfb5a899b24d43}}"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe—ns541C.tmp
User:
admin
Company:
Microsoft Corporation
Integrity Level:
HIGH
Description:
Windows PowerShell
Exit code:
0
Version:
10.0.14409.1005 (rs1_srvoob.161208-1155)
Modules
Images
c:\windows\system32\windowspowershell\v1.0\powershell.exe
c:\windows\system32\ntdll.dll
c:\windows\system32\kernel32.dll
c:\windows\system32\kernelbase.dll
c:\windows\system32\advapi32.dll
c:\windows\system32\msvcrt.dll
c:\windows\system32\sechost.dll
c:\windows\system32\rpcrt4.dll
c:\windows\system32\atl.dll
c:\windows\system32\user32.dll
448"C:\Users\admin\AppData\Local\Temp\nsn21CD.tmp\ns541C.tmp" powershell.exe -NoProfile -WindowStyle Hidden -NonInteractive -Command "If (Get-ChildItem Cert:\LocalMachine\Root\0563b8630d62d75abbc8ab1e4bdfb5a899b24d43){certutil.exe -verifystore 'Root' '0563b8630d62d75abbc8ab1e4bdfb5a899b24d43';If($LASTEXITCODE -ne 0){Remove-Item Cert:\LocalMachine\Root\0563b8630d62d75abbc8ab1e4bdfb5a899b24d43}}"C:\Users\admin\AppData\Local\Temp\nsn21CD.tmp\ns541C.tmp—npcap-1.79.exe
User:
admin
Integrity Level:
HIGH
Exit code:
0
Modules
Images
c:\users\admin\appdata\local\temp\nsn21cd.tmp\ns541c.tmp
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\user32.dll
c:\windows\system32\gdi32.dll
572powershell.exe -NoProfile -WindowStyle Hidden -NonInteractive -Command "If (Get-ChildItem Cert:\LocalMachine\Root\5fb7ee0633e259dbad0c4c9ae6d38f1a61c7dc25){certutil.exe -verifystore 'Root' '5fb7ee0633e259dbad0c4c9ae6d38f1a61c7dc25';If($LASTEXITCODE -ne 0){Remove-Item Cert:\LocalMachine\Root\5fb7ee0633e259dbad0c4c9ae6d38f1a61c7dc25}}"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe—ns5F4C.tmp
User:
admin
Company:
Microsoft Corporation
Integrity Level:
HIGH
Description:
Windows PowerShell
Exit code:
0
Version:
10.0.14409.1005 (rs1_srvoob.161208-1155)
Modules
Images
c:\windows\system32\windowspowershell\v1.0\powershell.exe
c:\windows\system32\ntdll.dll
c:\windows\system32\kernel32.dll
c:\windows\system32\kernelbase.dll
c:\windows\system32\advapi32.dll
c:\windows\system32\msvcrt.dll
c:\windows\system32\sechost.dll
c:\windows\system32\rpcrt4.dll
c:\windows\system32\atl.dll
c:\windows\system32\user32.dll
668certutil.exe -verifystore "Root" "5fb7ee0633e259dbad0c4c9ae6d38f1a61c7dc25"C:\Windows\System32\certutil.exe—ns64DA.tmp
User:
admin
Company:
Microsoft Corporation
Integrity Level:
HIGH
Description:
CertUtil.exe
Exit code:
2148073489
Version:
6.1.7601.18151 (win7sp1_gdr.130512-1533)
Modules
Images
c:\windows\system32\certutil.exe
c:\windows\system32\ntdll.dll
c:\windows\system32\kernel32.dll
c:\windows\system32\kernelbase.dll
c:\windows\system32\advapi32.dll
c:\windows\system32\msvcrt.dll
c:\windows\system32\sechost.dll
c:\windows\system32\rpcrt4.dll
c:\windows\system32\certcli.dll
c:\windows\system32\atl.dll
712"C:\Users\admin\AppData\Local\Temp\nsn21CD.tmp\ns4F68.tmp" powershell.exe -NoProfile -WindowStyle Hidden -NonInteractive -Command "Get-ChildItem Cert:\LocalMachine\Root | Where-Object {$_.Thumbprint -eq '0563b8630d62d75abbc8ab1e4bdfb5a899b24d43'} | Sort-Object -Descending -Property FriendlyName | Select-Object -Skip 1 | Remove-Item"C:\Users\admin\AppData\Local\Temp\nsn21CD.tmp\ns4F68.tmp—npcap-1.79.exe
User:
admin
Integrity Level:
HIGH
Exit code:
0
Modules
Images
c:\users\admin\appdata\local\temp\nsn21cd.tmp\ns4f68.tmp
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\user32.dll
c:\windows\system32\gdi32.dll
1072pnputil.exe -eC:\Windows\System32\PnPutil.exe—NPFInstall.exe
User:
admin
Company:
Microsoft Corporation
Integrity Level:
HIGH
Description:
Microsoft PnP Utility - Tool to add, delete and enumerate driver packages.
Exit code:
0
Version:
6.1.7600.16385 (win7_rtm.090713-1255)
Modules
Images
c:\windows\system32\pnputil.exe
c:\windows\system32\ntdll.dll
c:\windows\system32\kernel32.dll
c:\windows\system32\kernelbase.dll
c:\windows\system32\msvcrt.dll
c:\windows\system32\user32.dll
c:\windows\system32\gdi32.dll
c:\windows\system32\lpk.dll
c:\windows\system32\usp10.dll
c:\windows\system32\setupapi.dll
1216certutil.exe -verifystore "Root" "0563b8630d62d75abbc8ab1e4bdfb5a899b24d43"C:\Windows\System32\certutil.exe—ns593E.tmp
User:
admin
Company:
Microsoft Corporation
Integrity Level:
HIGH
Description:
CertUtil.exe
Exit code:
2148073489
Version:
6.1.7601.18151 (win7sp1_gdr.130512-1533)
Modules
Images
c:\windows\system32\certutil.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\certcli.dll
c:\windows\system32\atl.dll
1288"C:\Program Files\Npcap\NPFInstall.exe" -n -cC:\Program Files\Npcap\NPFInstall.exe—ns6645.tmp
User:
admin
Company:
Insecure.Com LLC.
Integrity Level:
HIGH
Description:
A LWF & WFP driver installation tool
Exit code:
0
Version:
1.79
Modules
Images
c:\program files\npcap\npfinstall.exe
c:\windows\system32\ntdll.dll
c:\windows\system32\kernel32.dll
c:\windows\system32\kernelbase.dll
c:\windows\system32\setupapi.dll
c:\windows\system32\cfgmgr32.dll
c:\windows\system32\msvcrt.dll
c:\windows\system32\rpcrt4.dll
c:\windows\system32\advapi32.dll
c:\windows\system32\sechost.dll
1504"C:\Users\admin\AppData\Local\Temp\nsn21CD.tmp\ns5F4C.tmp" powershell.exe -NoProfile -WindowStyle Hidden -NonInteractive -Command "If (Get-ChildItem Cert:\LocalMachine\Root\5fb7ee0633e259dbad0c4c9ae6d38f1a61c7dc25){certutil.exe -verifystore 'Root' '5fb7ee0633e259dbad0c4c9ae6d38f1a61c7dc25';If($LASTEXITCODE -ne 0){Remove-Item Cert:\LocalMachine\Root\5fb7ee0633e259dbad0c4c9ae6d38f1a61c7dc25}}"C:\Users\admin\AppData\Local\Temp\nsn21CD.tmp\ns5F4C.tmp—npcap-1.79.exe
User:
admin
Integrity Level:
HIGH
Exit code:
0
Modules
Images
c:\users\admin\appdata\local\temp\nsn21cd.tmp\ns5f4c.tmp
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\user32.dll
c:\windows\system32\gdi32.dll
Total events
32 263
Read events
32 085
Write events
160
Delete events
18

Modification events

(PID) Process:(2408) npcap-1.79.exeKey:HKEY_LOCAL_MACHINE\SOFTWARE\Npcap
Operation:writeName:AdminOnly
Value:
0
(PID) Process:(2408) npcap-1.79.exeKey:HKEY_LOCAL_MACHINE\SOFTWARE\Npcap
Operation:writeName:WinPcapCompatible
Value:
1
(PID) Process:(2408) npcap-1.79.exeKey:HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\NpcapInst
Operation:writeName:UninstallString
Value:
"C:\Program Files\Npcap\uninstall.exe"
(PID) Process:(2408) npcap-1.79.exeKey:HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\NpcapInst
Operation:writeName:QuietUninstallString
Value:
"C:\Program Files\Npcap\uninstall.exe" /S
(PID) Process:(2408) npcap-1.79.exeKey:HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\NpcapInst
Operation:writeName:DisplayIcon
Value:
C:\Program Files\Npcap\uninstall.exe
(PID) Process:(2408) npcap-1.79.exeKey:HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\NpcapInst
Operation:writeName:UninstallPath
Value:
C:\Program Files\Npcap
(PID) Process:(3800) powershell.exeKey:HKEY_CLASSES_ROOT\Local Settings\MuiCache\182\52C64B7E
Operation:writeName:LanguageList
Value:
en-US
(PID) Process:(2560) certutil.exeKey:HKEY_CLASSES_ROOT\Local Settings\MuiCache\182\52C64B7E
Operation:writeName:LanguageList
Value:
en-US
(PID) Process:(296) powershell.exeKey:HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\0563B8630D62D75ABBC8AB1E4BDFB5A899B24D43
Operation:delete valueName:File
Value:
(PID) Process:(296) powershell.exeKey:HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\0563B8630D62D75ABBC8AB1E4BDFB5A899B24D43
Operation:delete keyName:(default)
Value:
Executable files
36
Suspicious files
24
Text files
8
Unknown types
2

Dropped files

PID
Process
Filename
Type
2408npcap-1.79.exeC:\Users\admin\AppData\Local\Temp\nsn21CD.tmp\System.dllexecutable
MD5:—
SHA256:—
2408npcap-1.79.exeC:\Users\admin\AppData\Local\Temp\nsn21CD.tmp\options.initext
MD5:—
SHA256:—
2408npcap-1.79.exeC:\Users\admin\AppData\Local\Temp\nsn21CD.tmp\InstallOptions.dllexecutable
MD5:—
SHA256:—
2408npcap-1.79.exeC:\Users\admin\AppData\Local\Temp\nsn21CD.tmp\final.initext
MD5:—
SHA256:—
2408npcap-1.79.exeC:\Users\admin\AppData\Local\Temp\nsn21CD.tmp\nsExec.dllexecutable
MD5:—
SHA256:—
2408npcap-1.79.exeC:\Users\admin\AppData\Local\Temp\nsn21CD.tmp\ns21FD.tmpexecutable
MD5:—
SHA256:—
2408npcap-1.79.exeC:\Users\admin\AppData\Local\Temp\nsn21CD.tmp\modern-header.bmpimage
MD5:—
SHA256:—
2780npcap-1.79.exeC:\Users\admin\AppData\Local\Temp\nsh39D9.tmp\System.dllexecutable
MD5:—
SHA256:—
2780npcap-1.79.exeC:\Users\admin\AppData\Local\Temp\nsh39D8.tmpbinary
MD5:—
SHA256:—
2408npcap-1.79.exeC:\Users\admin\AppData\Local\Temp\nsn21CD.tmp\NPFInstall.exeexecutable
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

No 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
—
—
224.0.0.252:5355
—
—
—
unknown
1080
svchost.exe
224.0.0.252:5355
—
—
—
unknown

DNS requests

No data

Threats

No threats detected
No debug info
Interactive malware hunting service ANY.RUN
© 2017-2025 ANY.RUN ALL RIGHTS RESERVED
ANY.RUN
Reports
npcap-1.79.exe