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tnetfilter2.sys

NetFilter SDK

secretsauce

Part of the Yontoo adware component, a web browser plugin that injects unwanted ads in the browser. The file tnetfilter2.sys, “NetFilter SDK TDI Hook Driver (WPP)” by secretsauce has been detected as adware by 2 anti-malware scanners. It runs as a Windows 64-bit kernel mode device driver named “tnetfilter2”.
Publisher:
NetFilterSDK.com  (signed by secretsauce)

Product:
NetFilter SDK

Description:
NetFilter SDK TDI Hook Driver (WPP)

Version:
1.4.3.1 built by: WinDDK

MD5:
483a8d96e262b5deeba7616cbc23ec9d

SHA-1:
1aa1d7cf5c198a343efba80b1aacedfba7ff9f72

SHA-256:
7ff6792815036d85527a06e9de17061fb0e3645a7035665b9bd1f2ed26932f07

Scanner detections:
2 / 68

Status:
Adware

Explanation:
Belongs to the Sambreel/Yontoo progam that inserts various forms of advertising in the user's web browser, installed with minimal or no user consent.

Analysis date:
5/13/2024 2:04:26 PM UTC  (today)

Scan engine
Detection
Engine version

AVG
MalSign.Secsau
2015.0.3576

Reason Heuristics
PUP.secretsauce.O
14.8.7.20

File size:
54.1 KB (55,360 bytes)

Product version:
1.4.3.1

Copyright:
Copyright © 2013 NetFilterSDK.com

Original file name:
netfilter2.sys

File type:
Driver (Win64 SYS)

Language:
English (United States)

Common path:
C:\Windows\System32\drivers\tnetfilter2.sys

Digital Signature
Signed by:
secretsauce

Authority:
VeriSign, Inc.

Valid from:
10/7/2013 2:00:00 AM

Valid to:
10/8/2014 1:59:59 AM

Subject:
CN=secretsauce, OU=Digital ID Class 3 - Microsoft Software Validation v2, O=secretsauce, L=San Diego, S=California, C=US

Issuer:
CN=VeriSign Class 3 Code Signing 2010 CA, OU=Terms of use at https://www.verisign.com/rpa (c)10, OU=VeriSign Trust Network, O="VeriSign, Inc.", C=US

Serial number:
4AE20FA715A6AD31570AF66DF284144A

File PE Metadata
OS bitness:
Win64

CTPH (ssdeep):
768:okXb40sLtT65vfMocmPSPOEEkBD3xM0xbMJyYWovPlIJLd7e3D:okXb4npTCFc4SWE5BltbhovdIVAD

Entry point:
8B, FF, 55, 8B, EC, A1, 80, 92, 01, 00, 85, C0, B9, 4E, E6, 40, BB, 74, 04, 3B, C1, 75, 1E, 8B, 15, 14, 91, 01, 00, B8, 80, 92, 01, 00, C1, E8, 08, 33, 02, A3, 80, 92, 01, 00, 75, 07, 8B, C1, A3, 80, 92, 01, 00, F7, D0, A3, 84, 92, 01, 00, 5D, E9, 8F, E3, FF, FF, CC, AC, A7, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 7C, AB, 00, 00, 94, 90, 00, 00, 98, A7, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, B2, AB, 00, 00, 80, 90, 00, 00, A4, A7, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, CE, AB, 00, 00, 8C, 90, 00, 00, 00...
 
[+]

Entropy:
6.3367

Driver
Display name:
tnetfilter2

Type:
Kernel device driver (KernelDriver)

Group:
PNP_TDI


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