w3wp.exe

File Path: C:\Windows\system32\inetsrv\w3wp.exe
Description: IIS Worker Process

Hashes

Type	Hash
MD5	`AB6D6849B3B8B8F4A292DC76EBB1243F`
SHA1	`54443C275EDDD9BBE75C6D47CF9C24076B5D785C`
SHA256	`A0A37FDE4D8CD7385E819AFA967BC525231C2F166C38591532D8FEEAB94E40DA`
SHA384	`623AEC4602A36447576C259D1865650052EC3C533CFE541C5D101AC7203E4EFAF37C45B22D23B6250533C6A64B91B619`
SHA512	`EAE9436AB3896AF2F3E1F11305DA1955116C777F3627D333E99378E7702865A480A5268E3D4A41197C19088509056F47629C686CA391A6DDCA9772DF9986911A`
SSDEEP	`384:zHOsMck/6v+UVWcrqNYOmOMC2nUxVYXZfw8gtUUMkHutQdKWSuY:zHLMck/q+U0WqNgOt2oVAZfMaUMkOty4`

Runtime Data

Usage (stdout):

Usage: C:\Windows\system32\inetsrv\w3wp.exe -s <site id> | -h [application host file]  
                           -w <optional root web.config file>  
                           -in <optional instance name>  
 
	-debug 
		 This option launches a worker process using the default 
		 application host config file.  By default, it will use 
		 site id 1. 
 
	-s <site id> 
		 Optional parameter to use a siteinformation from the provided 
		 site id. 
 
	or 
 
	-h [Application host config filename] 
		 Launches a worker process using the specified application host 
		 config file. 
 
	-in <Instance Name> 
		 Optional instance name to use.  Defaults to 'HWC-<PID>' 
 
	-w <Root web config filename> 
		 Optional root web config file to use. 

Signature

Status: Signature verified.
Serial: 33000000BCE120FDD27CC8EE930000000000BC
Thumbprint: E85459B23C232DB3CB94C7A56D47678F58E8E51E
Issuer: CN=Microsoft Windows Production PCA 2011, O=Microsoft Corporation, L=Redmond, S=Washington, C=US
Subject: CN=Microsoft Windows, O=Microsoft Corporation, L=Redmond, S=Washington, C=US

File Metadata

Original Filename: w3wp.exe.mui
Product Name: Internet Information Services
Company Name: Microsoft Corporation
File Version: 10.0.14393.0 (rs1_release.160715-1616)
Product Version: 10.0.14393.0
Language: Language Neutral

Possible Misuse

The following table contains possible examples of w3wp.exe being misused. While w3wp.exe is not inherently malicious, its legitimate functionality can be abused for malicious purposes.

Source	Source File	Example	License
sigma	godmode_sigma_rule.yml	`- '\w3wp.exe'`	DRL 1.0
sigma	sysmon_suspicious_remote_thread.yml	`- '\w3wp.exe'`	DRL 1.0
sigma	pipe_created_alternate_powershell_hosts_pipe.yml	`- 'c:\windows\system32\inetsrv\w3wp.exe' # this is sad :,( but it triggers FPs on Exchange servers`	DRL 1.0
sigma	proc_creation_win_susp_csc_folder.yml	`- '\w3wp.exe' # https://twitter.com/gabriele_pippi/status/1206907900268072962`	DRL 1.0
sigma	proc_creation_win_susp_powershell_parent_process.yml	`- '\w3wp.exe'`	DRL 1.0
sigma	proc_creation_win_webshell_detection.yml	`- '\w3wp.exe'`	DRL 1.0
sigma	proc_creation_win_webshell_recon_detection.yml	`- '\w3wp.exe'`	DRL 1.0
sigma	proc_creation_win_webshell_spawn.yml	`- '\w3wp.exe'`	DRL 1.0
signature-base	apt_hafnium.yar	$s1 = “AppPath=c:\windows\system32\inetsrv\w3wp.exe” wide fullword	CC BY-NC 4.0