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{a3f28269-ad17-41a8-b032-3e0313ef8979}w.sys

Greener Web

Part of the Yontoo adware component, a web browser plugin that injects unwanted ads in the browser. The file {a3f28269-ad17-41a8-b032-3e0313ef8979}w.sys by Greener Web has been detected as adware by 31 anti-malware scanners. It runs as a Windows kernel mode device driver named “{a3f28269-ad17-41a8-b032-3e0313ef8979}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 Greener Web)

Product:
StdLib

Version:
1.4.4.6 built by: WinDDK

MD5:
fb41b3af77b3e076f88947af3fa57ce4

SHA-1:
30acaae9596b93bab545c655f1e3bb44da2509f6

SHA-256:
c2d2b1b2fed6dc4b6f3b2b1dd3d15c9a4d8379531e33ad141e39a3018a11a9c7

Scanner detections:
31 / 68

Status:
Adware

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

Analysis date:
4/19/2024 6:25:06 AM UTC  (today)

Scan engine
Detection
Engine version

Lavasoft Ad-Aware
Adware.SwiftBrowse.AZ
355

Agnitum Outpost
Trojan.BPlug
7.1.1

AhnLab V3 Security
PUP/Win32.BrowseFox
2014.12.01

Avira AntiVirus
Adware/BrowseFox.A.168
7.11.189.158

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

AVG
Generic
2017.0.2833

Baidu Antivirus
Trojan.Win32.NetFilter
4.0.3.16215

Bitdefender
Adware.SwiftBrowse.AZ
1.0.20.230

Clam AntiVirus
Win.Adware.Browsefox-60
0.98/21511

Comodo Security
Application.Win32.RiskWare.NetFilter.D
20248

Dr.Web
Trojan.Yontoo.1734
9.0.1.046

Emsisoft Anti-Malware
Adware.SwiftBrowse.AZ
8.16.02.15.10

ESET NOD32
Win64/BrowseFox.AC (variant)
10.10805

Fortinet FortiGate
Adware/Yotoon
2/15/2016

F-Prot
W32/A-0937c3f0
v6.4.7.1.166

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

G Data
Adware.SwiftBrowse.AZ
16.2.24

IKARUS anti.virus
AdWare.SwiftBrowse
t3scan.1.7.8.0

Kaspersky
not-a-virus:AdWare.Win64.Yotoon
14.0.0.658

McAfee
Artemis!358F463562FF
5600.6489

MicroWorld eScan
Adware.SwiftBrowse.AZ
17.0.0.138

NANO AntiVirus
Riskware.Win32.Yotoon.ddghtt
0.28.2.61349

nProtect
Adware.SwiftBrowse.AZ
14.11.28.01

Panda Antivirus
Adware/BrowserFox
16.02.15.10

Qihoo 360 Security
Win32/Virus.Adware.c12
1.0.0.1015

Reason Heuristics
PUP.Yontoo.GreenerWeb (M)
16.2.15.10

Sophos
Generic PUA BA
4.98

Trend Micro House Call
Suspicious_GEN.F47V0826
7.2.46

Vba32 AntiVirus
AdWare.Win64.Yotoon
3.12.26.3

VIPRE Antivirus
Yontoo
33654

Zillya! Antivirus
Adware.Yotoon.Win64.8
2.0.0.1996

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\{a3f28269-ad17-41a8-b032-3e0313ef8979}w.sys

Digital Signature
Signed by:
Greener Web

Authority:
VeriSign, Inc.

Valid from:
4/21/2014 5:00:00 PM

Valid to:
4/22/2015 4:59:59 PM

Subject:
CN=Greener Web, OU=Digital ID Class 3 - Microsoft Software Validation v2, O=Greener Web, 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:
5AE1591EB6D76718ADCE211DFB4D195B

File PE Metadata
Compilation timestamp:
9/22/2014 12:01:51 PM

OS version:
6.1

OS bitness:
Win32

Subsystem:
Native (none required)

Linker version:
9.0

CTPH (ssdeep):
768:aN0457WBZwpHs63E+X7BIrTsCEziDH+JgrVJddnaEuQ:OhUcpH/0+LCf7EziDHhdyQ

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:
6.6163

Code size:
28 KB (28,672 bytes)

Driver
Display name:
{a3f28269-ad17-41a8-b032-3e0313ef8979}w

Type:
Kernel device driver (KernelDriver)

Group:
PNP_TDI


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