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{4df60d2c-927b-478c-83f0-b7dc923bae60}w.sys

Yula

Part of the Yontoo adware component, a web browser plugin that injects unwanted ads in the browser. The file {4df60d2c-927b-478c-83f0-b7dc923bae60}w.sys by Yula has been detected as adware by 27 anti-malware scanners. It runs as a Windows kernel mode device driver named “{4df60d2c-927b-478c-83f0-b7dc923bae60}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 Yula)

Product:
StdLib

Version:
1.4.3.1 built by: WinDDK

MD5:
f152281c5cf798fe3fc8776e4255c771

SHA-1:
3b4e08de0705a01876395d351acb3b03c52322cc

SHA-256:
78c8b96e369e6d77a11cabf3c8e5a71bbe19fa14de4c52a39379726d540928ac

Scanner detections:
27 / 68

Status:
Adware

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

Analysis date:
4/23/2024 5:26:05 AM UTC  (today)

Scan engine
Detection
Engine version

Lavasoft Ad-Aware
Adware.NetFilter.C
355

Agnitum Outpost
Trojan.BPlug
7.1.1

AhnLab V3 Security
PUP/Win32.BrowseFox
2014.12.17

Avira AntiVirus
Adware/BrowseFox.A.197
7.11.196.68

AVG
Zula
2017.0.2833

Baidu Antivirus
Adware.Win32.BrowseFox
4.0.3.16215

Bitdefender
Adware.NetFilter.C
1.0.20.230

Clam AntiVirus
Win.Adware.Yotoon
0.98/21511

Comodo Security
TrojWare.Win32.AltBrowse.IZZV
20394

Dr.Web
Trojan.BPlug.123
9.0.1.046

Emsisoft Anti-Malware
Adware.NetFilter
8.16.02.15.01

ESET NOD32
Win64/BrowseFox.BH (variant)
10.10889

Fortinet FortiGate
Adware/BrowseFox
2/15/2016

F-Prot
W32/A-c99f2d8b
v6.4.7.1.166

F-Secure
Adware.NetFilter.C
11.2016-15-02_2

G Data
Adware.NetFilter
16.2.24

IKARUS anti.virus
AdWare.SwiftBrowse
t3scan.1.8.5.0

McAfee
Artemis!8A01E8B265D8
5600.6489

MicroWorld eScan
Adware.NetFilter.C
17.0.0.138

NANO AntiVirus
Riskware.Win32.Yotoon.ddghtt
0.28.6.64267

nProtect
Adware.NetFilter.C
14.12.16.01

Panda Antivirus
Trj/CI.A
16.02.15.01

Reason Heuristics
PUP.Yontoo.Yula (M)
16.2.15.1

Trend Micro House Call
Suspicious_GEN.F47V0704
7.2.46

Vba32 AntiVirus
AdWare.Win64.Yotoon
3.12.26.3

VIPRE Antivirus
Adware.SwiftBrowse
35798

Zillya! Antivirus
Adware.Yotoon.Win64.11
2.0.0.2007

File size:
51.7 KB (52,912 bytes)

Product version:
1.4.3.1

Copyright:
Copyright © 2013 StdLib

Original file name:
StdLib.sys

File type:
Driver (Win32 SYS)

Language:
English (United States)

Common path:
C:\Windows\System32\drivers\{4df60d2c-927b-478c-83f0-b7dc923bae60}w.sys

Digital Signature
Signed by:
Yula

Authority:
VeriSign, Inc.

Valid from:
3/15/2014 1:00:00 AM

Valid to:
3/16/2015 12:59:59 AM

Subject:
CN=Yula, OU=Digital ID Class 3 - Microsoft Software Validation v2, O=Yula, 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:
4B2C13D47B877663487D003C021E7110

File PE Metadata
Compilation timestamp:
7/30/2014 9:13:39 PM

OS version:
6.1

OS bitness:
Win32

Subsystem:
Native (none required)

Linker version:
9.0

CTPH (ssdeep):
768:8IsHpnK0CBSqUPJHKQpkJxpKwT2bcWiJmOtV3g2rp3lnCehi:rsHRK0LJqQpkYwTsiTtVxt1hi

Entry address:
0xC03E

Entry point:
8B, FF, 55, 8B, EC, E8, BD, FF, FF, FF, 5D, E9, 62, 50, FF, FF, CC, CC, 74, C1, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, BC, C4, 00, 00, C0, A0, 00, 00, B4, C0, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 12, C5, 00, 00, 00, A0, 00, 00, EC, C0, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, AE, C8, 00, 00, 38, A0, 00, 00, C4, C0, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, A6, C9, 00, 00, 10, A0, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, EA, C4, 00, 00, FE, C4, 00, 00, D6, C4...
 
[+]

Entropy:
6.3576

Code size:
37 KB (37,888 bytes)

Driver
Display name:
{4df60d2c-927b-478c-83f0-b7dc923bae60}w

Type:
Kernel device driver (KernelDriver)

Group:
PNP_TDI


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