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{b2db3058-74ee-4ace-bcd8-8cd0fbe3a4f6}w64.sys

HulaToo

Part of the Yontoo adware component, a web browser plugin that injects unwanted ads in the browser. The file {b2db3058-74ee-4ace-bcd8-8cd0fbe3a4f6}w64.sys by HulaToo has been detected as adware by 8 anti-malware scanners. It runs as a Windows 64-bit kernel mode device driver named “{b2db3058-74ee-4ace-bcd8-8cd0fbe3a4f6}w64”. 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:
1.4.3.1 built by: WinDDK

MD5:
8127e0fb2e675e62091975ad7b6ce010

SHA-1:
4e0f97a4996b88f729894daf9bca4ab6b2779fe7

SHA-256:
fb932258681d0dfa138db8d17e30782e5717315b93b92abd45d2fc52d87a1c19

Scanner detections:
8 / 68

Status:
Adware

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

Analysis date:
5/6/2024 3:01:41 AM UTC  (today)

Scan engine
Detection
Engine version

AVG
Hulaoo
2015.0.3412

Baidu Antivirus
Adware.Win32.BrowseFox
4.0.3.14716

IKARUS anti.virus
AdWare.SpadeCast
t3scan.1.6.1.0

McAfee
Artemis!7BF0BA8E01B7
5600.7068

Reason Heuristics
PUP.HulaToo.m
14.7.16.3

Sophos
BrowseSmart
4.98

Trend Micro House Call
TROJ_GEN.F47V0609
7.2.197

VIPRE Antivirus
Trojan.Win32.Generic
30350

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\{b2db3058-74ee-4ace-bcd8-8cd0fbe3a4f6}w64.sys

Digital Signature
Signed by:
HulaToo

Authority:
VeriSign, Inc.

Valid from:
3/18/2014 5:00:00 PM

Valid to:
3/19/2015 4:59:59 PM

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:
1/30/2014 4:45:30 PM

OS version:
6.1

OS bitness:
Win64

Subsystem:
Native (none required)

Linker version:
9.0

CTPH (ssdeep):
768:wot2dxF9O8ZF33iqiIy938bWp9XcfBvJkowidIT+ND:w9JRicy938ip9ea1jSD

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...
 
[+]

Entropy:
5.9642

Code size:
46.5 KB (47,616 bytes)

Driver
Display name:
{b2db3058-74ee-4ace-bcd8-8cd0fbe3a4f6}w64

Type:
Kernel device driver (KernelDriver)

Group:
PNP_TDI


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