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{0e195523-6785-4f9c-bb2f-0a791b0c99d0}gw.sys

ClearThink

Part of the Yontoo adware component, a web browser plugin that injects unwanted ads in the browser. The file {0e195523-6785-4f9c-bb2f-0a791b0c99d0}gw.sys by ClearThink has been detected as adware by 23 anti-malware scanners. It runs as a Windows kernel mode device driver named “{0e195523-6785-4f9c-bb2f-0a791b0c99d0}Gw”. 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 ClearThink)

Product:
StdLib

Version:
1.4.4.6 built by: WinDDK

MD5:
18f766c7409cf3811fa61fd26006f3c7

SHA-1:
e46bbcdc55e477a6b0c9e02bbd82edbc6d15fa42

SHA-256:
0b2fd188602019a509f8e7b4558e70f31226dc8599aad5180cad6c160e7563fa

Scanner detections:
23 / 68

Status:
Adware

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

Analysis date:
4/26/2024 8:44:24 PM UTC  (today)

Scan engine
Detection
Engine version

Lavasoft Ad-Aware
Adware.BrowseFox.V
6213306

Agnitum Outpost
PUA.BrowseFox
7.1.1

AhnLab V3 Security
Win-PUP/BrowseFox.Gen
2014.12.22

Avira AntiVirus
Adware/BrowseFox.A.1227
7.11.197.26

AVG
Generic
2015.0.3253

Bitdefender
Adware.BrowseFox.V
1.0.20.1780

Clam AntiVirus
Win.Adware.Netfilter-134
0.98/19819

Comodo Security
TrojWare.Win32.AltBrowse.IZZV
20438

Dr.Web
hacktool program Tool.NetFilter.313
9.0.1.05190

Emsisoft Anti-Malware
Adware.BrowseFox.V
9.0.0.4668

ESET NOD32
Win32/RiskWare.NetFilter.F application
7.0.302.0

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

F-Secure
Adware.BrowseFox.V
5.13.68

G Data
Adware.BrowseFox
14.12.24

K7 AntiVirus
Unwanted-Program
13.188.14395

MicroWorld eScan
Adware.BrowseFox.V
15.0.0.1068

NANO AntiVirus
Riskware.Win32.NetFilter.dgkdox
0.28.6.64267

Norman
Adware.BrowseFox.V
04.12.2014 14:30:06

nProtect
Adware.BrowseFox.V
14.12.19.01

Reason Heuristics
PUP.ClearThink.l
14.12.22.3

Vba32 AntiVirus
AdWare.Win64.Yotoon
3.12.26.3

VIPRE Antivirus
Threat.4150696
35418

Zillya! Antivirus
Backdoor.CPEX.Win32.29350
2.0.0.2012

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\{0e195523-6785-4f9c-bb2f-0a791b0c99d0}gw.sys

Digital Signature
Signed by:
ClearThink

Authority:
VeriSign, Inc.

Valid from:
10/9/2014 3:00:00 AM

Valid to:
8/6/2015 2:59:59 AM

Subject:
CN=ClearThink, O=ClearThink, 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:
59B72B1DB71CE323997B1EAF80E12AAE

File PE Metadata
Compilation timestamp:
11/29/2014 9:46:22 PM

OS version:
6.1

OS bitness:
Win32

Subsystem:
Native (none required)

Linker version:
9.0

CTPH (ssdeep):
768:nN0457WBZwpHs63E+X7BIrTsCEziDH+JgrVJddMJw:NhUcpH/0+LCf7EziDHhdUw

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:
6.6151

Code size:
28 KB (28,672 bytes)

Driver
Display name:
{0e195523-6785-4f9c-bb2f-0a791b0c99d0}Gw

Type:
Kernel device driver (KernelDriver)

Group:
PNP_TDI


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