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{8d075910-3332-4e1b-83a0-de523a191c04}gw64.sys

Skywebber

Part of the Yontoo adware component, a web browser plugin that injects unwanted ads in the browser. The file {8d075910-3332-4e1b-83a0-de523a191c04}gw64.sys by Skywebber has been detected as adware by 23 anti-malware scanners. It runs as a Windows 64-bit kernel mode device driver named “{8d075910-3332-4e1b-83a0-de523a191c04}Gw64”. 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 Skywebber)

Product:
StdLib

Version:
1.4.3.1 built by: WinDDK

MD5:
b39f3c514a72e23b45fe62b802ed1d6b

SHA-1:
c4711da35179a87db13dbab1f8b0e1f1c08dfad1

SHA-256:
30ef9a79ee86d259a3acb457ed6eb8cf0ae5f7590e5001ad1dc663a16bdc0bed

Scanner detections:
23 / 68

Status:
Adware

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

Analysis date:
4/19/2024 4:30:44 PM UTC  (today)

Scan engine
Detection
Engine version

Lavasoft Ad-Aware
Adware.NetFilter.E
5777739

Agnitum Outpost
Trojan.BPlug
7.1.1

AhnLab V3 Security
Trojan/Win64.SwiftBrowse
2015.04.28

AVG
MalSign.Skodna.glindorus
2016.0.3126

Baidu Antivirus
Adware.Win32.BrowseFox
4.0.3.15428

Bitdefender
Adware.NetFilter.E
1.0.20.590

Bkav FE
W64.HfsAdware
1.3.0.6379

Clam AntiVirus
Win.Adware.Swiftbrowse-75
0.98/21511

Dr.Web
Trojan.BPlug.123
9.0.1.05190

Emsisoft Anti-Malware
Adware.NetFilter
9.0.0.4799

ESET NOD32
Win64/NetFilter.A potentially unsafe (variant)
9.11544

F-Prot
W64/A-e967bae2
v6.4.7.1.166

F-Secure
Adware.NetFilter.E
5.13.68

G Data
Adware.NetFilter
15.4.25

herdProtect (fuzzy)
variant of wstlib64.sys (Adware)
2015.7.28.12

MicroWorld eScan
Adware.NetFilter.E
16.0.0.354

Norman
Adware.NetFilter.E
03.12.2014 13:20:04

nProtect
Trojan-Clicker/W32.SwiftBrowse.61112
15.04.28.01

Reason Heuristics
Threat.Yontoo.Skywebber
15.4.28.5

Sophos
PUA 'BrowseSmart' (of type Adware)
5.13

SUPERAntiSpyware
Adware.NetFilter/Variant
9908

VIPRE Antivirus
Threat.4150696
39486

Zillya! Antivirus
Adware.Yotoon.Win64.3
2.0.0.2157

File size:
59.7 KB (61,112 bytes)

Product version:
1.4.3.1

Copyright:
Copyright © 2013 StdLib

Original file name:
StdLib.sys

File type:
Driver (Win64 SYS)

Language:
English (United States)

Common path:
C:\Windows\System32\drivers\{8d075910-3332-4e1b-83a0-de523a191c04}gw64.sys

Digital Signature
Signed by:
Skywebber

Authority:
VeriSign, Inc.

Valid from:
10/7/2013 2:00:00 AM

Valid to:
10/8/2014 1:59:59 AM

Subject:
CN=Skywebber, OU=Digital ID Class 3 - Microsoft Software Validation v2, O=Skywebber, 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:
06606AB25DD3CD2FC4C1610240BD0EF8

File PE Metadata
Compilation timestamp:
1/31/2014 1:45:30 AM

OS version:
6.1

OS bitness:
Win64

Subsystem:
Native (none required)

Linker version:
9.0

CTPH (ssdeep):
768:zot2dxF9O8ZF33iqiIy938bWp9XcfBvJkowidIn5:z9JRicy938ip9ea1j5

Entry address:
0xF064

Entry point:
48, 83, EC, 28, 4C, 8B, C2, 4C, 8B, C9, E8, 95, FF, FF, FF, 49, 8B, D0, 49, 8B, C9, 48, 83, C4, 28, E9, 2E, 20, FF, FF, CC, CC, 38, F2, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 1C, F6, 00, 00, 60, C1, 00, 00, 28, F1, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, BE, F9, 00, 00, 50, C0, 00, 00, D8, F0, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, B6, FA, 00, 00, 00, C0, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 9A, FA, 00, 00, 00, 00, 00, 00, 86, FA, 00, 00...
 
[+]

Code size:
46.5 KB (47,616 bytes)

Driver
Display name:
{8d075910-3332-4e1b-83a0-de523a191c04}Gw64

Type:
Kernel device driver (KernelDriver)

Group:
PNP_TDI


herdProtect is a second line of defense malware removal platform powered by 68 anti-malware engines in the cloud. Since no single anti-malware program is perfect 100% of the time, herdProtect utilizes a 'herd' of multiple engines to guarantee the widest coverage and the earliest possible detection.