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{5439514f-8f31-4db6-9cd9-066850c9feed}w.sys

GreyGray

Part of the Yontoo adware component, a web browser plugin that injects unwanted ads in the browser. The file {5439514f-8f31-4db6-9cd9-066850c9feed}w.sys by GreyGray has been detected as adware by 21 anti-malware scanners. It runs as a Windows kernel mode device driver named “{5439514f-8f31-4db6-9cd9-066850c9feed}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 GreyGray)

Product:
StdLib

Version:
1.4.4.6 built by: WinDDK

MD5:
074666298defe7a0a805b59e0cbc4dcb

SHA-1:
ad8f4f9752ee19646ada7175dc41209ae7177b9f

SHA-256:
ea9b2134b9307e9703e93818924912bf5a4ceecf57a5633264847faa1e3e4347

Scanner detections:
21 / 68

Status:
Adware

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

Analysis date:
4/26/2024 10:44:13 PM UTC  (today)

Scan engine
Detection
Engine version

Lavasoft Ad-Aware
Adware.BrowseFox.V
799

Agnitum Outpost
PUA.BrowseFox
7.1.1

Avira AntiVirus
Adware/BrowseFox.A.1227
7.11.189.64

AVG
GreyGray
2015.0.3277

Baidu Antivirus
Adware.Win32.BrowseFox
4.0.3.141128

Bitdefender
Adware.BrowseFox.V
1.0.20.1660

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

Comodo Security
TrojWare.Win32.AltBrowse.IZZV
20215

Dr.Web
hacktool program Tool.NetFilter.313
9.0.1.05190

Emsisoft Anti-Malware
Adware.BrowseFox.V
9.0.0.4570

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

F-Secure
Adware.BrowseFox.V
11.2014-28-11_6

G Data
Adware.BrowseFox
14.11.24

MicroWorld eScan
Adware.BrowseFox.V
15.0.0.996

NANO AntiVirus
Riskware.Win32.NetFilter.dgkdox
0.28.6.63726

nProtect
Adware.BrowseFox.V
14.11.27.01

Qihoo 360 Security
Win32/Virus.Adware.618
1.0.0.1015

Reason Heuristics
PUP.GreyGray.k
14.11.28.0

Vba32 AntiVirus
AdWare.Win64.Yotoon
3.12.26.3

VIPRE Antivirus
Threat.4150696
35088

Zillya! Antivirus
Backdoor.CPEX.Win32.29350
2.0.0.1995

File size:
42.2 KB (43,192 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\{5439514f-8f31-4db6-9cd9-066850c9feed}w.sys

Digital Signature
Signed by:
GreyGray

Authority:
VeriSign, Inc.

Valid from:
9/19/2013 5:00:00 AM

Valid to:
9/20/2015 4:59:59 AM

Subject:
CN=GreyGray, OU=Digital ID Class 3 - Microsoft Software Validation v2, O=GreyGray, 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:
23FF62A16C638B371A4AB98A8F876E8B

File PE Metadata
Compilation timestamp:
11/27/2014 3:24:29 PM

OS version:
6.1

OS bitness:
Win32

Subsystem:
Native (none required)

Linker version:
9.0

CTPH (ssdeep):
768:uN0457WBZwpHs63E+X7BIrTsCEziDH+JgrVJdd3LMw:ShUcpH/0+LCf7EziDHhdp1

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...
 
[+]

Code size:
28 KB (28,672 bytes)

Driver
Display name:
{5439514f-8f31-4db6-9cd9-066850c9feed}w

Type:
Kernel device driver (KernelDriver)

Group:
PNP_TDI


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