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{51b9c91c-8e38-40ae-80de-58a590512b6b}gw.sys

TasticSurf

Part of the Yontoo adware component, a web browser plugin that injects unwanted ads in the browser. The file {51b9c91c-8e38-40ae-80de-58a590512b6b}gw.sys by TasticSurf has been detected as adware by 22 anti-malware scanners. It runs as a Windows kernel mode device driver named “{51b9c91c-8e38-40ae-80de-58a590512b6b}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 TasticSurf)

Product:
StdLib

Version:
1.4.4.6 built by: WinDDK

MD5:
3e207ac7485cfccdacb8ddd3f4ca2151

SHA-1:
1b16b07912d13c4c14d760370973ab9b3c084166

SHA-256:
d7401b9203ea73e32b7d0e3b069ffe287929f9777ec7f7288ecf6f623284c7d5

Scanner detections:
22 / 68

Status:
Adware

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

Analysis date:
4/25/2024 7:22:19 AM 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
7.11.185.204

AVG
Generic
2015.0.3277

Bitdefender
Adware.BrowseFox.V
1.0.20.1660

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

Comodo Security
TrojWare.Win32.AltBrowse.IZZV
20082

Dr.Web
Tool.NetFilter.313
9.0.1.0332

Emsisoft Anti-Malware
Adware.BrowseFox.V
8.14.11.28.02

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

K7 AntiVirus
Trojan
13.185.14021

McAfee
Artemis!3E207AC7485C
5600.6933

MicroWorld eScan
Adware.BrowseFox.V
15.0.0.996

NANO AntiVirus
Riskware.Win32.NetFilter.dgkdox
0.28.6.63362

nProtect
Adware.BrowseFox.V
14.11.14.01

Qihoo 360 Security
Win32/Virus.Adware.618
1.0.0.1015

Reason Heuristics
PUP.TasticSurf.l
14.11.28.2

Vba32 AntiVirus
AdWare.Win64.Yotoon
3.12.26.3

VIPRE Antivirus
Trojan.Win32.Generic
34794

Zillya! Antivirus
Backdoor.CPEX.Win32.29350
2.0.0.1982

File size:
42.2 KB (43,200 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\{51b9c91c-8e38-40ae-80de-58a590512b6b}gw.sys

Digital Signature
Signed by:
TasticSurf

Authority:
VeriSign, Inc.

Valid from:
11/27/2013 1:00:00 AM

Valid to:
11/28/2014 12:59:59 AM

Subject:
CN=TasticSurf, OU=Digital ID Class 3 - Microsoft Software Validation v2, O=TasticSurf, 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:
7A9A017A31DB5E88B561FEDAF60E6163

File PE Metadata
Compilation timestamp:
11/11/2014 1:25:25 AM

OS version:
6.1

OS bitness:
Win32

Subsystem:
Native (none required)

Linker version:
9.0

CTPH (ssdeep):
768:oN0457WBZwpHs63E+X7BIrTsCEziDH+JgrVJddr1oTF:whUcpH/0+LCf7EziDHhd2F

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:
{51b9c91c-8e38-40ae-80de-58a590512b6b}Gw

Type:
Kernel device driver (KernelDriver)

Group:
PNP_TDI


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