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{91975f83-f39c-43cf-aad4-0b3396b0f6db}gw64.sys

Forever Net

Part of the Yontoo adware component, a web browser plugin that injects unwanted ads in the browser. The file {91975f83-f39c-43cf-aad4-0b3396b0f6db}gw64.sys by Forever Net has been detected as adware by 24 anti-malware scanners. It runs as a Windows 64-bit kernel mode device driver named “{91975f83-f39c-43cf-aad4-0b3396b0f6db}Gw64”.
Publisher:
StdLib  (signed by Forever Net)

Product:
StdLib

Version:
1.4.4.6 built by: WinDDK

MD5:
15d4299ebc286c028418e37b42752900

SHA-1:
3cb14a26628191662703db07595af91e4e2a8f18

SHA-256:
ef0201ab1fe932a0f12639c5e316e4b493ab3dd5dc32bcbfdac2f15f3baa509e

Scanner detections:
24 / 68

Status:
Adware

Explanation:
Belongs to the Sambreel/Yontoo progam that inserts various forms of advertising in the user's web browser, installed with minimal or no user consent.

Analysis date:
4/25/2024 9:48:26 AM UTC  (today)

Scan engine
Detection
Engine version

Lavasoft Ad-Aware
Adware.SwiftBrowse.CH
674

Agnitum Outpost
Riskware.Agent
7.1.1

AVG
Generic
2016.0.3152

Bitdefender
Adware.SwiftBrowse.CH
1.0.20.455

Bkav FE
W64.HfsAdware
1.3.0.6379

Clam AntiVirus
Win.Adware.Swiftbrowse-497
0.98/21411

Dr.Web
Tool.NetFilter.313
9.0.1.091

Emsisoft Anti-Malware
Adware.SwiftBrowse.CH
8.15.04.01.02

ESET NOD32
Win64/NetFilter.A potentially unsafe application
7.0.302.0

F-Prot
W64/A-59c9c70a
v6.4.7.1.166

F-Secure
Adware.SwiftBrowse.CH
11.2015-01-04_4

G Data
Adware.SwiftBrowse.CH
15.4.25

herdProtect (fuzzy)
variant of {7012eec1-4f37-42d4-a2cd-26727494d248}gw64.sys (Adware)
2015.7.6.10

K7 AntiVirus
Adware
13.202.15452

McAfee
Artemis!8A7547B9D41E
5600.6713

MicroWorld eScan
Adware.SwiftBrowse.CH
16.0.0.273

Norman
Adware.SwiftBrowse.CH
03.12.2014 13:20:04

nProtect
Adware.SwiftBrowse.CH
15.04.01.01

Reason Heuristics
PUP.Yontoo
15.4.1.14

Sophos
Browse Fox
4.98

Trend Micro House Call
Suspicious_GEN.F47V1022
7.2.91

Trend Micro
HS_BROWSEFOX.SM
10.465.01

VIPRE Antivirus
Trojan.Win32.Generic
34136

Zillya! Antivirus
Adware.Yotoon.Win64.14
2.0.0.2123

File size:
47.6 KB (48,784 bytes)

Product version:
1.4.4.6

Copyright:
Copyright © 2013 StdLib

Original file name:
StdLib.sys

File type:
Driver (Win64 SYS)

Language:
English (United States)

Common path:
C:\Windows\System32\drivers\{91975f83-f39c-43cf-aad4-0b3396b0f6db}gw64.sys

Digital Signature
Signed by:
Forever Net

Authority:
VeriSign, Inc.

Valid from:
10/5/2014 8:00:00 PM

Valid to:
10/6/2015 7:59:59 PM

Subject:
CN=Forever Net, O=Forever Net, 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:
7B5ED55ED16E6F18734703E8E9B4C456

File PE Metadata
Compilation timestamp:
4/1/2015 7:38:18 AM

OS version:
6.1

OS bitness:
Win64

Subsystem:
Native (none required)

Linker version:
9.0

CTPH (ssdeep):
768:lm7G2EjsnyXeOUEGG0LA8tWFZuL470h6aqxcCT2kvsVRwlZD3DZDk:4FID6EGnLA8AFJTNEVmD9Dk

Entry address:
0xC064

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, E2, 50, FF, FF, CC, CC, 78, C2, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 54, C6, 00, 00, A0, 91, 00, 00, 28, C1, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, DA, CA, 00, 00, 50, 90, 00, 00, D8, C0, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, D2, CB, 00, 00, 00, 90, 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, B6, CB, 00, 00, 00, 00, 00, 00, A2, CB, 00, 00...
 
[+]

Entropy:
6.3921

Code size:
34.5 KB (35,328 bytes)

Driver
Display name:
{91975f83-f39c-43cf-aad4-0b3396b0f6db}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.