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{c933aa85-a419-42da-9957-2f32a4c0601a}gw64.sys

HulaToo

Part of the Yontoo adware component, a web browser plugin that injects unwanted ads in the browser. The file {c933aa85-a419-42da-9957-2f32a4c0601a}gw64.sys by HulaToo has been detected as adware by 16 anti-malware scanners. It runs as a Windows 64-bit kernel mode device driver named “{c933aa85-a419-42da-9957-2f32a4c0601a}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:
aa97edcd803e84572b48e384bce0ff21

SHA-1:
a2ad28878aa67ecb8985245d6311860fd2f2b6c4

SHA-256:
f663914c869540713c2ced546ec7420eda477e752300273d5d891e50b06f93fd

Scanner detections:
16 / 68

Status:
Adware

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

Analysis date:
4/24/2024 1:27:37 PM UTC  (today)

Scan engine
Detection
Engine version

Lavasoft Ad-Aware
Adware.SwiftBrowse.CH
735

Agnitum Outpost
Riskware.Agent
7.1.1

avast!
Win32:BrowseFox-DW [PUP]
2014.9-150131

AVG
Hulaoo
2016.0.3213

Bitdefender
Adware.SwiftBrowse.CH
1.0.20.155

Clam AntiVirus
Win.Adware.Swiftbrowse-497
0.98/21511

Dr.Web
Tool.NetFilter.313
9.0.1.031

ESET NOD32
Win64/BrowseFox (variant)
9.10823

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

F-Secure
Adware.SwiftBrowse.CH
11.2015-31-01_7

G Data
Adware.SwiftBrowse.CH
15.1.24

MicroWorld eScan
Adware.SwiftBrowse.CH
16.0.0.93

nProtect
Adware.SwiftBrowse.CH
14.12.03.01

Reason Heuristics
PUP.Yontoo
15.1.31.6

VIPRE Antivirus
Trojan.Win32.Generic
35400

Zillya! Antivirus
Adware.Yotoon.Win64.14
2.0.0.1998

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\{c933aa85-a419-42da-9957-2f32a4c0601a}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:
11/30/2014 9:47:06 AM

OS version:
6.1

OS bitness:
Win64

Subsystem:
Native (none required)

Linker version:
9.0

CTPH (ssdeep):
768:la7G2EjsnyXeOUEGG0LA8tWFZuL470h6aqxcCT2kvsVRwlZD3C+o:sFID6EGnLA8AFJTNEVmDa

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:
{c933aa85-a419-42da-9957-2f32a4c0601a}Gw64

Type:
Kernel device driver (KernelDriver)

Group:
PNP_TDI


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