File name:

npcap-1.79.exe

Full analysis: https://app.any.run/tasks/10efeb05-bc01-4173-8397-277bff930a6e
Verdict: Malicious activity
Analysis date: April 13, 2024, 09:46:41
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: 2908)
      • NPFInstall.exe (PID: 392)
      • drvinst.exe (PID: 3600)
      • Uninstall.exe (PID: 3868)

    • Creates a writable file in the system directory

      • npcap-1.79.exe (PID: 2908)
      • drvinst.exe (PID: 3600)

    • Run PowerShell with an invisible window

      • powershell.exe (PID: 3976)
      • powershell.exe (PID: 2640)
      • powershell.exe (PID: 880)
      • powershell.exe (PID: 3272)
      • powershell.exe (PID: 3740)

  • SUSPICIOUS

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

      • npcap-1.79.exe (PID: 2908)
      • Uninstall.exe (PID: 3868)

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

      • npcap-1.79.exe (PID: 2908)
      • Uninstall.exe (PID: 3868)

    • Starts CMD.EXE for commands execution

      • ns2681.tmp (PID: 3488)

    • Creates a software uninstall entry

      • npcap-1.79.exe (PID: 2908)

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

      • npcap-1.79.exe (PID: 2908)
      • drvinst.exe (PID: 3600)
      • NPFInstall.exe (PID: 392)

    • The process hide an interactive prompt from the user

      • ns5498.tmp (PID: 2320)
      • ns60B2.tmp (PID: 2808)
      • ns66BE.tmp (PID: 2956)
      • ns5AA4.tmp (PID: 3028)
      • nsB4F6.tmp (PID: 1196)

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

      • cmd.exe (PID: 1972)

    • Executable content was dropped or overwritten

      • npcap-1.79.exe (PID: 2908)
      • drvinst.exe (PID: 3600)
      • NPFInstall.exe (PID: 392)
      • Uninstall.exe (PID: 3868)

    • Starts application with an unusual extension

      • npcap-1.79.exe (PID: 2908)
      • Uninstall.exe (PID: 3868)

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

      • cmd.exe (PID: 1972)

    • Reads the Internet Settings

      • WMIC.exe (PID: 2440)

    • The process bypasses the loading of PowerShell profile settings

      • ns5498.tmp (PID: 2320)
      • ns66BE.tmp (PID: 2956)
      • ns60B2.tmp (PID: 2808)
      • ns5AA4.tmp (PID: 3028)
      • nsB4F6.tmp (PID: 1196)

    • Starts POWERSHELL.EXE for commands execution

      • ns60B2.tmp (PID: 2808)
      • ns5498.tmp (PID: 2320)
      • ns5AA4.tmp (PID: 3028)
      • ns66BE.tmp (PID: 2956)
      • nsB4F6.tmp (PID: 1196)

    • Creates files in the driver directory

      • drvinst.exe (PID: 3600)

    • Checks Windows Trust Settings

      • drvinst.exe (PID: 3600)
      • NPFInstall.exe (PID: 392)

    • Reads security settings of Internet Explorer

      • NPFInstall.exe (PID: 392)

    • Reads settings of System Certificates

      • NPFInstall.exe (PID: 392)
      • rundll32.exe (PID: 2104)

    • Creates or modifies Windows services

      • npcap-1.79.exe (PID: 2908)

    • Adds/modifies Windows certificates

      • certutil.exe (PID: 2868)

    • Searches for installed software

      • Uninstall.exe (PID: 3868)

  • INFO

    • Checks supported languages

      • npcap-1.79.exe (PID: 2908)
      • ns2681.tmp (PID: 3488)
      • ns5498.tmp (PID: 2320)
      • ns5245.tmp (PID: 2488)
      • NPFInstall.exe (PID: 1844)
      • ns6044.tmp (PID: 3620)
      • ns5FD5.tmp (PID: 1780)
      • ns60B2.tmp (PID: 2808)
      • ns5AA4.tmp (PID: 3028)
      • ns6E22.tmp (PID: 3468)
      • NPFInstall.exe (PID: 3040)
      • ns6F2E.tmp (PID: 2380)
      • ns7019.tmp (PID: 3016)
      • NPFInstall.exe (PID: 3048)
      • ns7097.tmp (PID: 908)
      • NPFInstall.exe (PID: 392)
      • ns66BE.tmp (PID: 2956)
      • ns6DA4.tmp (PID: 752)
      • ns6EA0.tmp (PID: 3108)
      • drvinst.exe (PID: 3600)
      • nsB34F.tmp (PID: 3480)
      • Uninstall.exe (PID: 3868)
      • nsB40B.tmp (PID: 1812)
      • NPFInstall.exe (PID: 3904)
      • nsB4F6.tmp (PID: 1196)
      • nsBB6F.tmp (PID: 2304)
      • nsBBED.tmp (PID: 1432)
      • NPFInstall.exe (PID: 2976)
      • nsBC6B.tmp (PID: 4004)
      • NPFInstall.exe (PID: 116)
      • NPFInstall.exe (PID: 3972)
      • nsBCE9.tmp (PID: 2564)

    • Reads the computer name

      • npcap-1.79.exe (PID: 2908)
      • NPFInstall.exe (PID: 1844)
      • NPFInstall.exe (PID: 3048)
      • NPFInstall.exe (PID: 392)
      • drvinst.exe (PID: 3600)
      • Uninstall.exe (PID: 3868)
      • NPFInstall.exe (PID: 3904)
      • NPFInstall.exe (PID: 2976)

    • Reads Environment values

      • npcap-1.79.exe (PID: 2908)

    • Create files in a temporary directory

      • npcap-1.79.exe (PID: 2908)
      • NPFInstall.exe (PID: 392)
      • Uninstall.exe (PID: 3868)

    • Creates files in the program directory

      • npcap-1.79.exe (PID: 2908)
      • NPFInstall.exe (PID: 1844)
      • NPFInstall.exe (PID: 392)

    • Reads the software policy settings

      • drvinst.exe (PID: 3600)
      • rundll32.exe (PID: 2104)
      • NPFInstall.exe (PID: 392)

    • Reads the machine GUID from the registry

      • NPFInstall.exe (PID: 392)
      • drvinst.exe (PID: 3600)

    • Reads security settings of Internet Explorer

      • rundll32.exe (PID: 2104)

    • Adds/modifies Windows certificates

      • drvinst.exe (PID: 3600)

    • Script raised an exception (POWERSHELL)

      • powershell.exe (PID: 3740)
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.
screenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshot
All screenshots are available in the full report
All screenshots are available in the full report
Total processes
118
Monitored processes
52
Malicious processes
7
Suspicious processes
0

Behavior graph

Click at the process to see the details
start npcap-1.79.exe ns2681.tmp no specs cmd.exe no specs wmic.exe no specs findstr.exe no specs ns5245.tmp no specs npfinstall.exe no specs ns5498.tmp no specs powershell.exe no specs ns5aa4.tmp no specs powershell.exe no specs certutil.exe no specs ns5fd5.tmp no specs certutil.exe no specs ns6044.tmp no specs certutil.exe no specs ns60b2.tmp no specs powershell.exe no specs ns66be.tmp no specs powershell.exe no specs certutil.exe no specs ns6da4.tmp no specs certutil.exe no specs ns6e22.tmp no specs certutil.exe no specs ns6ea0.tmp no specs certutil.exe no specs ns6f2e.tmp no specs npfinstall.exe no specs pnputil.exe no specs ns7019.tmp no specs npfinstall.exe no specs ns7097.tmp no specs npfinstall.exe drvinst.exe rundll32.exe no specs nsb34f.tmp no specs uninstall.exe nsb40b.tmp no specs npfinstall.exe no specs nsb4f6.tmp no specs powershell.exe no specs nsbb6f.tmp no specs npfinstall.exe no specs nsbbed.tmp no specs npfinstall.exe no specs nsbc6b.tmp no specs npfinstall.exe no specs pnputil.exe no specs nsbce9.tmp no specs schtasks.exe no specs npcap-1.79.exe no specs

Process information

PID
CMD
Path
Indicators
Parent process
116"C:\Program Files\Npcap\NPFInstall.exe" -n -cC:\Program Files\Npcap\NPFInstall.exe—nsBC6B.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
392"C:\Program Files\Npcap\NPFInstall.exe" -n -iC:\Program Files\Npcap\NPFInstall.exe
ns7097.tmp
User:
admin
Company:
Insecure.Com LLC.
Integrity Level:
HIGH
Description:
A LWF & WFP driver installation tool
Exit code:
3758096963
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
752"C:\Users\admin\AppData\Local\Temp\nsz2651.tmp\ns6DA4.tmp" certutil.exe -verifystore "Root" "5fb7ee0633e259dbad0c4c9ae6d38f1a61c7dc25"C:\Users\admin\AppData\Local\Temp\nsz2651.tmp\ns6DA4.tmp—npcap-1.79.exe
User:
admin
Integrity Level:
HIGH
Exit code:
2148073489
Modules
Images
c:\users\admin\appdata\local\temp\nsz2651.tmp\ns6da4.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
880powershell.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:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe—ns5498.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
908"C:\Users\admin\AppData\Local\Temp\nsz2651.tmp\ns7097.tmp" "C:\Program Files\Npcap\NPFInstall.exe" -n -iC:\Users\admin\AppData\Local\Temp\nsz2651.tmp\ns7097.tmp—npcap-1.79.exe
User:
admin
Integrity Level:
HIGH
Exit code:
3758096963
Modules
Images
c:\users\admin\appdata\local\temp\nsz2651.tmp\ns7097.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
924certutil.exe -addstore -f "Root" "C:\Users\admin\AppData\Local\Temp\nsz2651.tmp\0563b8630d62d75abbc8ab1e4bdfb5a899b24d43.sst"C:\Windows\System32\certutil.exe—ns6044.tmp
User:
admin
Company:
Microsoft Corporation
Integrity Level:
HIGH
Description:
CertUtil.exe
Exit code:
2148086027
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
1196"C:\Users\admin\AppData\Local\Temp\nslB3BC.tmp\nsB4F6.tmp" powershell.exe -NoProfile -WindowStyle Hidden -NonInteractive -Command "Microsoft.PowerShell.Management\Stop-Service -Name npcap -PassThru | Microsoft.PowerShell.Utility\Select-Object -ExpandProperty Status"C:\Users\admin\AppData\Local\Temp\nslB3BC.tmp\nsB4F6.tmp—Uninstall.exe
User:
admin
Integrity Level:
HIGH
Exit code:
1
Modules
Images
c:\users\admin\appdata\local\temp\nslb3bc.tmp\nsb4f6.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
1432"C:\Users\admin\AppData\Local\Temp\nslB3BC.tmp\nsBBED.tmp" "C:\Program Files\Npcap\NPFInstall.exe" -n -uwC:\Users\admin\AppData\Local\Temp\nslB3BC.tmp\nsBBED.tmp—Uninstall.exe
User:
admin
Integrity Level:
HIGH
Exit code:
0
Modules
Images
c:\users\admin\appdata\local\temp\nslb3bc.tmp\nsbbed.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
1696pnputil.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
1780"C:\Users\admin\AppData\Local\Temp\nsz2651.tmp\ns5FD5.tmp" certutil.exe -verifystore "Root" "0563b8630d62d75abbc8ab1e4bdfb5a899b24d43"C:\Users\admin\AppData\Local\Temp\nsz2651.tmp\ns5FD5.tmp—npcap-1.79.exe
User:
admin
Integrity Level:
HIGH
Exit code:
2148073489
Modules
Images
c:\users\admin\appdata\local\temp\nsz2651.tmp\ns5fd5.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
40 866
Read events
40 673
Write events
171
Delete events
22

Modification events

(PID) Process:(2908) npcap-1.79.exeKey:HKEY_LOCAL_MACHINE\SOFTWARE\Npcap
Operation:writeName:AdminOnly
Value:
0
(PID) Process:(2908) npcap-1.79.exeKey:HKEY_LOCAL_MACHINE\SOFTWARE\Npcap
Operation:writeName:WinPcapCompatible
Value:
1
(PID) Process:(2908) 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:(2908) 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:(2908) 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:(2908) npcap-1.79.exeKey:HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\NpcapInst
Operation:writeName:UninstallPath
Value:
C:\Program Files\Npcap
(PID) Process:(880) powershell.exeKey:HKEY_CLASSES_ROOT\Local Settings\MuiCache\182\52C64B7E
Operation:writeName:LanguageList
Value:
en-US
(PID) Process:(2468) certutil.exeKey:HKEY_CLASSES_ROOT\Local Settings\MuiCache\182\52C64B7E
Operation:writeName:LanguageList
Value:
en-US
(PID) Process:(3976) powershell.exeKey:HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\0563B8630D62D75ABBC8AB1E4BDFB5A899B24D43
Operation:delete valueName:File
Value:
(PID) Process:(3976) powershell.exeKey:HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\0563B8630D62D75ABBC8AB1E4BDFB5A899B24D43
Operation:delete keyName:(default)
Value:
Executable files
52
Suspicious files
23
Text files
11
Unknown types
6

Dropped files

PID
Process
Filename
Type
2908npcap-1.79.exeC:\Users\admin\AppData\Local\Temp\nsz2651.tmp\System.dllexecutable
MD5:—
SHA256:—
2908npcap-1.79.exeC:\Users\admin\AppData\Local\Temp\nsz2651.tmp\options.initext
MD5:—
SHA256:—
2908npcap-1.79.exeC:\Users\admin\AppData\Local\Temp\nsz2651.tmp\InstallOptions.dllexecutable
MD5:—
SHA256:—
2908npcap-1.79.exeC:\Users\admin\AppData\Local\Temp\nsz2651.tmp\final.initext
MD5:—
SHA256:—
2908npcap-1.79.exeC:\Users\admin\AppData\Local\Temp\nsz2651.tmp\nsExec.dllexecutable
MD5:—
SHA256:—
2908npcap-1.79.exeC:\Users\admin\AppData\Local\Temp\nsz2651.tmp\ns2681.tmpexecutable
MD5:—
SHA256:—
2908npcap-1.79.exeC:\Users\admin\AppData\Local\Temp\nsz2651.tmp\modern-header.bmpimage
MD5:—
SHA256:—
2908npcap-1.79.exeC:\Users\admin\AppData\Local\Temp\nsz2651.tmp\NPFInstall.exeexecutable
MD5:—
SHA256:—
2908npcap-1.79.exeC:\Users\admin\AppData\Local\Temp\nsz2651.tmp\ns5245.tmpexecutable
MD5:—
SHA256:—
1844NPFInstall.exeC:\Program Files\Npcap\NPFInstall.logtext
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
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Reports
npcap-1.79.exe