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{4cd43b17-66da-4083-84a6-95351168df77}w.sys

BrowseSmart

Part of the Yontoo adware component, a web browser plugin that injects unwanted ads in the browser. The file {4cd43b17-66da-4083-84a6-95351168df77}w.sys by BrowseSmart has been detected as adware by 32 anti-malware scanners. It runs as a Windows kernel mode device driver named “{4cd43b17-66da-4083-84a6-95351168df77}w”. It will plug into the web browser and display context-based advertisements by overwriting existing ads or by inserting new ones on various web pages.
Publisher:
StdLib  (signed by BrowseSmart)

Product:
StdLib

Version:
1.4.4.6 built by: WinDDK

MD5:
11c51edd9e4b401a70b98f6723368507

SHA-1:
51da1c51c61cabe6435312ed47329b6564b3e267

SHA-256:
0c2949d325b813726c4e9f21147138286e9bd37cc6f7a2b011907d498f39bfb1

Scanner detections:
32 / 68

Status:
Adware

Explanation:
Injects advertising in the web browser in various formats.

Analysis date:
4/19/2024 3:19:29 AM UTC  (today)

Scan engine
Detection
Engine version

Lavasoft Ad-Aware
Adware.BrowseFox.V
354

Agnitum Outpost
PUA.BrowseFox
7.1.1

AhnLab V3 Security
Win-PUP/BrowseFox.Gen
2015.03.06

Avira AntiVirus
Adware/BrowseFox.A.1227
7.11.213.204

avast!
Win32:BrowseFox-GA [PUP]
2014.9-160215

AVG
BrowseSmart
2017.0.2832

Baidu Antivirus
Adware.Win32.BrowseFox
4.0.3.16215

Bitdefender
Adware.BrowseFox.V
1.0.20.230

Bkav FE
W32.HfsAdware
1.3.0.6379

Clam AntiVirus
Win.Adware.Netfilter-134
0.98/21511

Comodo Security
TrojWare.Win32.AltBrowse.IZZV
21299

Emsisoft Anti-Malware
Adware.BrowseFox.V
8.16.02.15.03

ESET NOD32
Win64/BrowseFox.BY (variant)
10.10992

Fortinet FortiGate
Adware/BrowseFox
2/15/2016

F-Prot
W32/A-76f53fd6
v6.4.7.1.166

F-Secure
Adware.BrowseFox.V
11.2016-15-02_2

G Data
Adware.BrowseFox
16.2.25

K7 AntiVirus
Unwanted-Program
13.200.15167

Kaspersky
not-a-virus:AdWare.Win32.Yotoon
14.0.0.657

McAfee
Artemis!BC3293AAD9DD
5600.6488

MicroWorld eScan
Adware.BrowseFox.V
17.0.0.138

NANO AntiVirus
Riskware.Win32.NetFilter.dgkdox
0.30.0.64448

Norman
Adware.BrowseFox.V
11.20160215

nProtect
Adware.BrowseFox.V
15.03.05.01

Qihoo 360 Security
Win32/Virus.Adware.618
1.0.0.1015

Reason Heuristics
PUP.Yontoo.BrowseSmart (M)
16.2.15.15

Sophos
Generic PUA HF
4.98

Trend Micro House Call
TROJ_GEN.F0C2C00LJ14
7.2.46

Trend Micro
TROJ_GEN.F0C2C00LJ14
10.465.15

Vba32 AntiVirus
AdWare.Zaitu
3.12.26.3

VIPRE Antivirus
Trojan.Win32.Generic
38140

Zillya! Antivirus
Backdoor.CPEX.Win32.29350
2.0.0.2088

File size:
42.2 KB (43,200 bytes)

Product version:
1.4.4.6

Copyright:
Copyright © 2013 StdLib

Original file name:
StdLib.sys

File type:
Driver (Win32 SYS)

Language:
English (United States)

Common path:
C:\Windows\System32\drivers\{4cd43b17-66da-4083-84a6-95351168df77}w.sys

Digital Signature
Signed by:
BrowseSmart

Authority:
VeriSign, Inc.

Valid from:
9/27/2013 2:00:00 AM

Valid to:
9/28/2015 1:59:59 AM

Subject:
CN=BrowseSmart, OU=Digital ID Class 3 - Microsoft Software Validation v2, O=BrowseSmart, L=Santa Monica, 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:
2324196045B471D3A6A37CF9331711AB

File PE Metadata
Compilation timestamp:
12/2/2014 12:41:38 PM

OS version:
6.1

OS bitness:
Win32

Subsystem:
Native (none required)

Linker version:
9.0

CTPH (ssdeep):
768:fN0457WBZwpHs63E+X7BIrTsCEziDH+JgrVJdd8Yq:FhUcpH/0+LCf7EziDHhdW

Entry address:
0xA03E

Entry point:
8B, FF, 55, 8B, EC, E8, BD, FF, FF, FF, 5D, E9, 20, 70, FF, FF, CC, CC, 94, A1, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, CE, A4, 00, 00, E0, 80, 00, 00, B4, A0, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 24, A5, 00, 00, 00, 80, 00, 00, EC, A0, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, A4, A9, 00, 00, 38, 80, 00, 00, C4, A0, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 9C, AA, 00, 00, 10, 80, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, FC, A4, 00, 00, 10, A5, 00, 00, E8, A4...
 
[+]

Code size:
28 KB (28,672 bytes)

Driver
Display name:
{4cd43b17-66da-4083-84a6-95351168df77}w

Type:
Kernel device driver (KernelDriver)

Group:
PNP_TDI


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