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{3f538614-b636-4023-9ec2-564ada4b07b3}gw64.sys

HulaToo

Part of the Yontoo adware component, a web browser plugin that injects unwanted ads in the browser. The file {3f538614-b636-4023-9ec2-564ada4b07b3}gw64.sys by HulaToo has been detected as adware by 26 anti-malware scanners. It runs as a Windows 64-bit kernel mode device driver named “{3f538614-b636-4023-9ec2-564ada4b07b3}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 HulaToo)

Product:
StdLib

Version:
1.4.4.6 built by: WinDDK

MD5:
4a1e520ae72e1cfe499a7e6e3bece8b2

SHA-1:
19b60fbd477aec29e893d8e180646e07e955cbd2

SHA-256:
d7775b24744b168ecc9e71ecb7bb0347c5a448bebc2183ba97af90e1cd7c8895

Scanner detections:
26 / 68

Status:
Adware

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

Analysis date:
4/19/2024 11:57:14 PM UTC  (a few moments ago)

Scan engine
Detection
Engine version

Lavasoft Ad-Aware
Adware.SwiftBrowse.CH
6496598

Agnitum Outpost
Riskware.Agent
7.1.1

avast!
Win64:BrowseFox-C [PUP]
150129-1

AVG
Webet
2016.0.3213

Baidu Antivirus
Adware.Win32.BrowseFox
4.0.3.15131

Bitdefender
Adware.SwiftBrowse.L
1.0.20.155

Clam AntiVirus
Win.Adware.Swiftbrowse-497
0.98/20008

Dr.Web
hacktool program Tool.NetFilter.313
9.0.1.05190

Emsisoft Anti-Malware
Adware.SwiftBrowse.CH
9.0.0.4799

ESET NOD32
Win64/BrowseFox (variant)
9.10710

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

F-Secure
Adware.SwiftBrowse.CH
5.13.68

G Data
Adware.SwiftBrowse
15.1.24

IKARUS anti.virus
AdWare.SpadeCast
t3scan.1.6.1.0

K7 AntiVirus
Adware
13.193.14818

McAfee
Artemis!AF5EA0DEB952
5600.6869

MicroWorld eScan
Adware.SwiftBrowse.L
16.0.0.93

Norman
Adware.SwiftBrowse.CH
02.01.2015 13:58:24

nProtect
Adware.SwiftBrowse.L
14.05.21.01

Reason Heuristics
PUP.Yontoo
15.1.31.6

Sophos
BrowseSmart
4.98

SUPERAntiSpyware
Adware.BrowseFox/Variant
10082

Trend Micro House Call
TROJ_GEN.F47V0520
7.2.31

Trend Micro
HS_BROWSEFOX.SM
10.465.31

VIPRE Antivirus
Trojan.Win32.Generic
29442

Zillya! Antivirus
Adware.Yotoon.Win64.14
2.0.0.1981

File size:
47.7 KB (48,824 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\{3f538614-b636-4023-9ec2-564ada4b07b3}gw64.sys

Digital Signature
Signed by:
HulaToo

Authority:
VeriSign, Inc.

Valid from:
3/19/2014 2:00:00 AM

Valid to:
3/20/2015 1:59:59 AM

Subject:
CN=HulaToo, OU=Digital ID Class 3 - Microsoft Software Validation v2, O=HulaToo, 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:
089F9EDFF3BE5DAC5EE5E228073DBDC4

File PE Metadata
Compilation timestamp:
9/22/2014 10:01:54 PM

OS version:
6.1

OS bitness:
Win64

Subsystem:
Native (none required)

Linker version:
9.0

CTPH (ssdeep):
768:lD7G2EjsnyXeOUEGG0LA8tWFZuL470h6aqxcCT2kvsVRwlZD3ZP+S:BFID6EGnLA8AFJTNEVmDZN

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:
6.3931

Code size:
34.5 KB (35,328 bytes)

Driver
Display name:
{3f538614-b636-4023-9ec2-564ada4b07b3}Gw64

Type:
Kernel device driver (KernelDriver)

Group:
PNP_TDI


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