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{4b6b588f-fe6d-43d5-96e6-6583434569cd}w.sys

SmarterPower

Part of the Yontoo adware component, a web browser plugin that injects unwanted ads in the browser. The file {4b6b588f-fe6d-43d5-96e6-6583434569cd}w.sys by SmarterPower has been detected as adware by 15 anti-malware scanners. It runs as a Windows kernel mode device driver named “{4b6b588f-fe6d-43d5-96e6-6583434569cd}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 SmarterPower)

Product:
StdLib

Version:
1.4.4.6 built by: WinDDK

MD5:
4e9a280ee53434fa1e5d63d26be73d3c

SHA-1:
9c1986cb8c7d02cc90190842759d0ee702a808b8

SHA-256:
45fc0eccb8f38c25959c33a6271ebb1274cf14ba2d6fc6a08bd7757283b0e7d8

Scanner detections:
15 / 68

Status:
Adware

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

Analysis date:
4/19/2024 10:19:34 AM UTC  (today)

Scan engine
Detection
Engine version

Agnitum Outpost
PUA.BrowseFox
7.1.1

Avira AntiVirus
Adware/BrowseFox.A.1227
7.11.180.154

AVG
Generic
2015.0.3313

Baidu Antivirus
Adware.Win64.BrowseFox
4.0.3.141022

Clam AntiVirus
Win.Adware.Netfilter-134
0.98/21411

Dr.Web
hacktool program Tool.NetFilter.313
9.0.1.05190

ESET NOD32
Win64/BrowseFox (variant)
8.10604

F-Prot
W32/A-248e95ab
v6.4.7.1.166

IKARUS anti.virus
AdWare.BrowseFox
t3scan.1.7.8.0

NANO AntiVirus
Riskware.Win32.NetFilter.dgkdox
0.28.2.62841

Reason Heuristics
PUP.SmarterPower.k
14.10.22.16

Sophos
Browse Fox
4.98

Vba32 AntiVirus
AdWare.Win64.Yotoon
3.12.26.3

VIPRE Antivirus
Threat.5061968
33706

Zillya! Antivirus
Backdoor.CPEX.Win32.29350
2.0.0.1964

File size:
42.1 KB (43,160 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\{4b6b588f-fe6d-43d5-96e6-6583434569cd}w.sys

Digital Signature
Signed by:
SmarterPower

Authority:
VeriSign, Inc.

Valid from:
8/5/2014 1:00:00 AM

Valid to:
8/6/2015 12:59:59 AM

Subject:
CN=SmarterPower, O=SmarterPower, 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:
38D7C83A73CB4E3AC85648608E3170D8

File PE Metadata
Compilation timestamp:
9/22/2014 8:01:51 PM

OS version:
6.1

OS bitness:
Win32

Subsystem:
Native (none required)

Linker version:
9.0

CTPH (ssdeep):
768:JN0457WBZwpHs63E+X7BIrTsCEziDH+JgrVJddzzn:LhUcpH/0+LCf7EziDHhd

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:
{4b6b588f-fe6d-43d5-96e6-6583434569cd}w

Type:
Kernel device driver (KernelDriver)

Group:
PNP_TDI


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