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{801a8bdd-505f-407c-9886-07fc47d556b0}w64.sys

squirrelweb

Part of the Yontoo adware component, a web browser plugin that injects unwanted ads in the browser. The file {801a8bdd-505f-407c-9886-07fc47d556b0}w64.sys by squirrelweb has been detected as adware by 25 anti-malware scanners. It runs as a Windows 64-bit kernel mode device driver named “{801a8bdd-505f-407c-9886-07fc47d556b0}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 squirrelweb)

Product:
StdLib

Version:
1.4.3.1 built by: WinDDK

MD5:
39726ac807de3a5337c8a5b84558c5d4

SHA-1:
a968284e5915d3297a107835cd243b55a450404f

SHA-256:
9e0f9fb6c5a2706cf128866f6ab099bd8c78ccbc9b44ece3f66ba107637e66a7

Scanner detections:
25 / 68

Status:
Adware

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

Analysis date:
4/19/2024 6:54:45 PM UTC  (today)

Scan engine
Detection
Engine version

Lavasoft Ad-Aware
Adware.SwiftBrowse.BV
360

Agnitum Outpost
Riskware.NetFilter
7.1.1

AhnLab V3 Security
Trojan/Win64.SwiftBrowse
2014.09.21

avast!
Win64:Malware-gen
2014.9-160209

AVG
Secsau
2017.0.2838

Baidu Antivirus
Adware.Win32.BrowseFox
4.0.3.1629

Bitdefender
Adware.SwiftBrowse.BV
1.0.20.200

Clam AntiVirus
Win.Adware.Swiftbrowse-284
0.98/19413

Comodo Security
UnclassifiedMalware
18740

Dr.Web
Trojan.BPlug.123
9.0.1.040

Emsisoft Anti-Malware
Adware.SwiftBrowse.BV
8.16.02.09.02

ESET NOD32
Win32/RiskWare.NetFilter (variant)
10.10008

F-Secure
Adware.SwiftBrowse.BV
11.2016-09-02_3

G Data
Adware.SwiftBrowse.BV
16.2.24

IKARUS anti.virus
AdWare.SpadeCast
t3scan.1.6.1.0

Malwarebytes
PUP.Optional.NetFilter
v2016.02.09.02

McAfee
Artemis!F317955BEF2D
5600.6494

MicroWorld eScan
Adware.SwiftBrowse.BV
17.0.0.120

nProtect
Adware.SwiftBrowse.L
14.05.23.01

Qihoo 360 Security
Win32/Trojan.RiskWare.a25
1.0.0.1015

Reason Heuristics
PUP.Yontoo.squirrelweb (M)
16.2.9.14

Sophos
BrowseSmart
4.98

Trend Micro House Call
Suspicious_GEN.F47V0617
7.2.40

VIPRE Antivirus
Adware.SwiftBrowse
33282

Zillya! Antivirus
Adware.Yotoon.Win64.3
2.0.0.1901

File size:
59.7 KB (61,120 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\{801a8bdd-505f-407c-9886-07fc47d556b0}w64.sys

Digital Signature
Signed by:
squirrelweb

Authority:
VeriSign, Inc.

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

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

Subject:
CN=squirrelweb, OU=Digital ID Class 3 - Microsoft Software Validation v2, O=squirrelweb, 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:
7244DFB846B028B3B64BA8B4A757EAA4

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):
768:0ot2dxF9O8ZF33iqiIy938bWp9XcfBvJkowidIPPoA:09JRicy938ip9ea1j3oA

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:
{801a8bdd-505f-407c-9886-07fc47d556b0}w64

Type:
Kernel device driver (KernelDriver)

Group:
PNP_TDI


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