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{397e3208-0393-47ca-9748-370b27e14021}w.sys

SmarterPower

Part of the Yontoo adware component, a web browser plugin that injects unwanted ads in the browser. The file {397e3208-0393-47ca-9748-370b27e14021}w.sys by SmarterPower has been detected as adware by 18 anti-malware scanners. It runs as a Windows kernel mode device driver named “{397e3208-0393-47ca-9748-370b27e14021}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:
bd6e03778c62462385c7c2fc900e4850

SHA-1:
abaeca062b4c3a85218a318e5f22ce99c2bdcd0e

SHA-256:
c2ff985c0092d0ecc98678d46c66f3af710e9f547fa24dee0add56137c112f29

Scanner detections:
18 / 68

Status:
Adware

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

Analysis date:
4/25/2024 1:12:02 AM UTC  (today)

Scan engine
Detection
Engine version

Agnitum Outpost
PUA.BrowseFox
7.1.1

Avira AntiVirus
Adware/BrowseFox.A.1227
7.11.179.192

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
Tool.NetFilter.313
9.0.1.0295

ESET NOD32
Win64/BrowseFox (variant)
8.10591

Fortinet FortiGate
Adware/BrowseFox
10/22/2014

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

IKARUS anti.virus
AdWare.BrowseFox
t3scan.1.7.8.0

McAfee
Artemis!BD6E03778C62
5600.6969

NANO AntiVirus
Riskware.Win32.NetFilter.dgkdox
0.28.2.62671

Qihoo 360 Security
Win32/Virus.Adware.618
1.0.0.1015

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
Adware.BrowseFox
34096

Zillya! Antivirus
Backdoor.CPEX.Win32.29350
2.0.0.1960

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\{397e3208-0393-47ca-9748-370b27e14021}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):
768:7N0457WBZwpHs63E+X7BIrTsCEziDH+JgrVJddzznp:BhUcpH/0+LCf7EziDHhdr

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:
{397e3208-0393-47ca-9748-370b27e14021}w

Type:
Kernel device driver (KernelDriver)

Group:
PNP_TDI


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