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{0024c5f4-ee90-4f3c-af05-4d7fbd9c981b}w.sys

BetterBrowse

Part of the Yontoo adware component, a web browser plugin that injects unwanted ads in the browser. The file {0024c5f4-ee90-4f3c-af05-4d7fbd9c981b}w.sys by BetterBrowse has been detected as adware by 27 anti-malware scanners. It runs as a Windows kernel mode device driver named “{0024c5f4-ee90-4f3c-af05-4d7fbd9c981b}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 BetterBrowse)

Product:
StdLib

Version:
1.4.4.6 built by: WinDDK

MD5:
71651ddc5fc9b47ff07d2331f8262ac1

SHA-1:
c1a44b26ea4939562fa01121088aa7ce8b42b123

SHA-256:
421f0c00ee58b10e4a6657be87ea650f397bec97f55579fc816b8e58a304f6d9

Scanner detections:
27 / 68

Status:
Adware

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

Analysis date:
4/26/2024 4:57:29 AM UTC  (today)

Scan engine
Detection
Engine version

Lavasoft Ad-Aware
Adware.BrowseFox.V
356

Agnitum Outpost
PUA.BrowseFox
7.1.1

Avira AntiVirus
Adware/BrowseFox.A.1227
7.11.201.124

AVG
Betbro
2017.0.2834

Baidu Antivirus
Adware.Win32.BrowseFox
4.0.3.16213

Bitdefender
Adware.BrowseFox.V
1.0.20.220

Bkav FE
W32.HfsAdware
1.3.0.6379

Clam AntiVirus
Win.Adware.Netfilter-134
0.98/20296

Comodo Security
TrojWare.Win32.AltBrowse.IZZV
20715

Dr.Web
Trojan.Yontoo.1742
9.0.1.044

Emsisoft Anti-Malware
Adware.BrowseFox.V
8.16.02.13.12

Fortinet FortiGate
Adware/Yotoon
2/13/2016

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

F-Secure
Adware.BrowseFox.V
11.2016-13-02_7

G Data
Adware.BrowseFox
16.2.24

K7 AntiVirus
Unwanted-Program
13.191.14645

McAfee
Artemis!E4E0B5B61366
5600.6490

MicroWorld eScan
Adware.BrowseFox.V
17.0.0.132

NANO AntiVirus
Riskware.Win32.NetFilter.dgkdox
0.30.0.64448

Norman
Adware.BrowseFox.V
11.20160213

nProtect
Adware.BrowseFox.V
15.04.07.01

Panda Antivirus
Trj/CI.A
16.02.13.12

Qihoo 360 Security
Win32/Virus.Adware.618
1.0.0.1015

Reason Heuristics
PUP.Yontoo.BetterBrowse (M)
16.2.13.12

Sophos
Generic PUA MP
4.98

Vba32 AntiVirus
AdWare.Win64.Yotoon
3.12.26.3

VIPRE Antivirus
Threat.4150696
38882

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\{0024c5f4-ee90-4f3c-af05-4d7fbd9c981b}w.sys

Digital Signature
Signed by:
BetterBrowse

Authority:
VeriSign, Inc.

Valid from:
9/26/2013 5:00:00 PM

Valid to:
9/27/2015 4:59:59 PM

Subject:
CN=BetterBrowse, OU=Digital ID Class 3 - Microsoft Software Validation v2, O=BetterBrowse, 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:
12F4B87646B8BAF069AA302DE756FE85

File PE Metadata
Compilation timestamp:
12/23/2014 3:43:27 AM

OS version:
6.1

OS bitness:
Win32

Subsystem:
Native (none required)

Linker version:
9.0

CTPH (ssdeep):
768:XN0457WBZwpHs63E+X7BIrTsCEziDH+JgrVJddcSLiN:dhUcpH/0+LCf7EziDHhdm

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...
 
[+]

Entropy:
6.6133

Code size:
28 KB (28,672 bytes)

Driver
Display name:
{0024c5f4-ee90-4f3c-af05-4d7fbd9c981b}w

Type:
Kernel device driver (KernelDriver)

Group:
PNP_TDI


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