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{549b1cd8-769f-468a-ad93-f57bfc8402c2}w.sys

Source App

Part of the Yontoo adware component, a web browser plugin that injects unwanted ads in the browser. The file {549b1cd8-769f-468a-ad93-f57bfc8402c2}w.sys by Source App has been detected as adware by 25 anti-malware scanners. It runs as a Windows kernel mode device driver named “{549b1cd8-769f-468a-ad93-f57bfc8402c2}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 Source App)

Product:
StdLib

Version:
1.4.4.6 built by: WinDDK

MD5:
3f24bf8fdf86c98a58dbc5d2ba241f83

SHA-1:
b42b2cb3b665692b4a89963534a43d00e63fa6b5

SHA-256:
84d3edfecd05b06fda08fe0aa5136fc77b33136540483cd4d869c16421511057

Scanner detections:
25 / 68

Status:
Adware

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

Analysis date:
4/25/2024 8:50:02 AM UTC  (today)

Scan engine
Detection
Engine version

Lavasoft Ad-Aware
Adware.BrowseFox.V
735

Agnitum Outpost
PUA.BrowseFox
7.1.1

Avira AntiVirus
Adware/BrowseFox.A.1227
7.11.204.208

AVG
Generic
2016.0.3213

Baidu Antivirus
Adware.Win32.BrowseFox
4.0.3.15131

Bitdefender
Adware.BrowseFox.V
1.0.20.155

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

Comodo Security
TrojWare.Win32.AltBrowse.IZZV
20820

Dr.Web
Tool.NetFilter.313
9.0.1.031

Emsisoft Anti-Malware
Adware.BrowseFox.V
8.15.01.31.07

Fortinet FortiGate
Adware/Yotoon
1/31/2015

F-Prot
W32/S-a7161e1c
v6.4.7.1.166

F-Secure
Adware.BrowseFox.V
11.2015-31-01_7

G Data
Adware.BrowseFox
15.1.24

K7 AntiVirus
Unwanted-Program
13.192.14734

McAfee
Artemis!3F24BF8FDF86
5600.6869

MicroWorld eScan
Adware.BrowseFox.V
16.0.0.93

NANO AntiVirus
Riskware.Win32.NetFilter.dgkdox
0.30.0.64812

nProtect
Adware.BrowseFox.V
15.01.23.01

Qihoo 360 Security
Win32/Virus.Adware.618
1.0.0.1015

Reason Heuristics
PUP.Yontoo
15.1.31.7

Trend Micro House Call
Suspicious_GEN.F47V0118
7.2.31

Vba32 AntiVirus
AdWare.Win64.Yotoon
3.12.26.3

VIPRE Antivirus
Trojan.Win32.Generic
36914

Zillya! Antivirus
Backdoor.CPEX.Win32.29350
2.0.0.2043

File size:
42.1 KB (43,152 bytes)

Product version:
1.4.4.6

Copyright:
Copyright © 2013 StdLib

Original file name:
StdLib.sys

File type:
Driver (Win32 SYS)

Common path:
C:\Windows\System32\drivers\{549b1cd8-769f-468a-ad93-f57bfc8402c2}w.sys

Digital Signature
Signed by:
Source App

Authority:
VeriSign, Inc.

Valid from:
10/16/2014 3:00:00 AM

Valid to:
10/17/2015 2:59:59 AM

Subject:
CN=Source App, O=Source App, L=San Diego, 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:
5436973D688F7AF7E3F875CD8B463EDD

File PE Metadata
Compilation timestamp:
1/12/2015 3:38:43 PM

OS version:
6.1

OS bitness:
Win32

Subsystem:
Native (none required)

Linker version:
9.0

CTPH (ssdeep):
768:lN0457WBZwpHs63E+X7BIrTsCEziDH+JgrVJddA/IF:nhUcpH/0+LCf7EziDHhd8IF

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:
6.6138

Code size:
28 KB (28,672 bytes)

Driver
Display name:
{549b1cd8-769f-468a-ad93-f57bfc8402c2}w

Type:
Kernel device driver (KernelDriver)

Group:
PNP_TDI


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