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{0024c5f4-ee90-4f3c-af05-4d7fbd9c981b}w64.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}w64.sys by BetterBrowse has been detected as adware by 30 anti-malware scanners. It runs as a Windows 64-bit kernel mode device driver named “{0024c5f4-ee90-4f3c-af05-4d7fbd9c981b}w64”. 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:
889f56a33675bbb878db16fd30275d30

SHA-1:
725f5aa246def50e8cca5ecd0b7e67d38eb1652e

SHA-256:
72bc36367ca0b1c861f4d86de7ae58293e0b38f202cc0aec825f693618d80aaf

Scanner detections:
30 / 68

Status:
Adware

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

Analysis date:
4/20/2024 3:13:10 AM UTC  (today)

Scan engine
Detection
Engine version

Lavasoft Ad-Aware
Adware.SwiftBrowse.CH
355

Agnitum Outpost
Riskware.Agent
7.1.1

AhnLab V3 Security
Win-PUP/BrowseFox.Gen
2015.06.30

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

AVG
Adware AdPlugin
2017.0.2833

Baidu Antivirus
Adware.Win32.BrowseFox
4.0.3.16215

Bitdefender
Adware.SwiftBrowse.CH
1.0.20.230

Bkav FE
W64.HfsAdware
1.3.0.6979

Clam AntiVirus
Win.Adware.Swiftbrowse-497
0.98/21213

Dr.Web
Trojan.Yontoo.1734
9.0.1.046

Emsisoft Anti-Malware
Adware.SwiftBrowse.CH
8.16.02.15.04

ESET NOD32
Win64/BrowseFox (variant)
10.10542

Fortinet FortiGate
Adware/BrowseFox
2/15/2016

F-Prot
W64/A-59c9c70a
v6.4.7.1.166

F-Secure
Adware.SwiftBrowse.CH
11.2016-15-02_2

G Data
Adware.SwiftBrowse.CH
16.2.25

K7 AntiVirus
Adware
13.205.16409

Malwarebytes
PUP.Optional.BetterBrowse.C
v2016.02.15.04

McAfee
Artemis!3AA0667CDE85
5600.6489

MicroWorld eScan
Adware.SwiftBrowse.CH
17.0.0.138

NANO AntiVirus
Riskware.Win64.NetFilter.dmlawx
0.30.24.2266

Norman
Adware.SwiftBrowse.CH
11.20160215

nProtect
Adware.SwiftBrowse.CH
15.06.30.01

Reason Heuristics
PUP.Yontoo.BetterBrowse (M)
16.2.15.4

Sophos
BrowseSmart
4.98

SUPERAntiSpyware
Adware.BrowseFox/Variant
9323

Trend Micro House Call
HS_BROWSEFOX.SM
7.2.46

Trend Micro
TROJ_GEN.R0C1C0OBA15
10.465.15

VIPRE Antivirus
Trojan.Win32.Generic
41586

Zillya! Antivirus
Adware.Yotoon.Win64.14
2.0.0.2258

File size:
47.7 KB (48,832 bytes)

Product version:
1.4.4.6

Copyright:
Copyright © 2013 StdLib

Original file name:
StdLib.sys

File type:
Driver (Win64 SYS)

Language:
English (United States)

Common path:
C:\Windows\System32\drivers\{0024c5f4-ee90-4f3c-af05-4d7fbd9c981b}w64.sys

Digital Signature
Signed by:
BetterBrowse

Authority:
VeriSign, Inc.

Valid from:
9/27/2013 5:30:00 AM

Valid to:
9/28/2015 5:29:59 AM

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:
6/11/2015 3:01:14 AM

OS version:
6.1

OS bitness:
Win64

Subsystem:
Native (none required)

Linker version:
9.0

CTPH (ssdeep):
768:lj7G2EjsnyXeOUEGG0LA8tWFZuL470h6aqxcCT2kvsVRwlZD3HSa:NFID6EGnLA8AFJTNEVmD7

Entry address:
0xC064

Entry point:
48, 83, EC, 28, 4C, 8B, C2, 4C, 8B, C9, E8, 95, FF, FF, FF, 49, 8B, D0, 49, 8B, C9, 48, 83, C4, 28, E9, E2, 50, FF, FF, CC, CC, 78, C2, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 54, C6, 00, 00, A0, 91, 00, 00, 28, C1, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, DA, CA, 00, 00, 50, 90, 00, 00, D8, C0, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, D2, CB, 00, 00, 00, 90, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, B6, CB, 00, 00, 00, 00, 00, 00, A2, CB, 00, 00...
 
[+]

Entropy:
6.3931

Code size:
34.5 KB (35,328 bytes)

Driver
Display name:
{0024c5f4-ee90-4f3c-af05-4d7fbd9c981b}w64

Type:
Kernel device driver (KernelDriver)

Group:
PNP_TDI


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