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{f551efce-3692-4ed5-8201-c1c7dbef1744}w.sys

GreyGray

Part of the Yontoo adware component, a web browser plugin that injects unwanted ads in the browser. The file {f551efce-3692-4ed5-8201-c1c7dbef1744}w.sys by GreyGray has been detected as adware by 20 anti-malware scanners. It runs as a Windows kernel mode device driver named “{f551efce-3692-4ed5-8201-c1c7dbef1744}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:
80c628c3bf0e74201b4a6a0a80fd5575

SHA-1:
8a35720bd25441ec1ddb0c111940f58c6f06ee52

SHA-256:
3cd9797b461f27cfe6222662582a8609359f04ae7ccbfddd7a95b766a73de77e

Scanner detections:
20 / 68

Status:
Adware

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

Analysis date:
4/25/2024 3:11:46 AM UTC  (today)

Scan engine
Detection
Engine version

Lavasoft Ad-Aware
Adware.BrowseFox.V
799

Agnitum Outpost
Trojan.BPlug
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.Swiftbrowse-79
0.98/21411

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-dd00b781
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.Yotoon.ddghtt
0.28.2.62671

nProtect
Adware.BrowseFox.V
14.11.27.01

Reason Heuristics
PUP.GreyGray.k
14.11.28.0

Vba32 AntiVirus
AdWare.Win64.Yotoon
3.12.26.3

VIPRE Antivirus
Trojan.Win32.Generic
30186

Zillya! Antivirus
Adware.Yotoon.Win64.1
2.0.0.1958

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\{f551efce-3692-4ed5-8201-c1c7dbef1744}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:
9/23/2014 12:01:51 AM

OS version:
6.1

OS bitness:
Win32

Subsystem:
Native (none required)

Linker version:
9.0

CTPH (ssdeep):
768:nN0457WBZwpHs63E+X7BIrTsCEziDH+JgrVJddLLMTlp:NhUcpH/0+LCf7EziDHhddon

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:
{f551efce-3692-4ed5-8201-c1c7dbef1744}w

Type:
Kernel device driver (KernelDriver)

Group:
PNP_TDI


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