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{b8a90375-3b37-4954-86de-f96c458c4ce2}w64.sys

Fortunitas

Part of the Yontoo adware component, a web browser plugin that injects unwanted ads in the browser. The file {b8a90375-3b37-4954-86de-f96c458c4ce2}w64.sys by Fortunitas has been detected as adware by 25 anti-malware scanners. It runs as a Windows 64-bit kernel mode device driver named “{b8a90375-3b37-4954-86de-f96c458c4ce2}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 Fortunitas)

Product:
StdLib

Version:
1.4.3.1 built by: WinDDK

MD5:
9286c8beb2e6da8d54345cc32b042112

SHA-1:
98d0f4cb9bd2f1bf179a07e0fdcbe98d796b752b

SHA-256:
e1c76ae781cd6836d56cc16a38c82cac0cccc752dd00edd46815d2df1b0240b5

Scanner detections:
25 / 68

Status:
Adware

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

Analysis date:
4/20/2024 3:06:45 AM UTC  (today)

Scan engine
Detection
Engine version

Lavasoft Ad-Aware
Adware.SwiftBrowse.CH
357

Agnitum Outpost
Riskware.Agent
7.1.1

AhnLab V3 Security
Trojan/Win64.SwiftBrowse
2015.01.30

AVG
MalSign.Fortu
2017.0.2835

Baidu Antivirus
Adware.Win32.BrowseFox
4.0.3.16212

Bitdefender
Adware.SwiftBrowse.CH
1.0.20.215

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

Dr.Web
Trojan.BPlug.123
9.0.1.043

Emsisoft Anti-Malware
Adware.SwiftBrowse.CH
8.16.02.12.02

ESET NOD32
Win64/BrowseFox.CG (variant)
10.10738

Fortinet FortiGate
Adware/BrowseFox
2/12/2016

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

F-Secure
Adware.SwiftBrowse.CH
11.2016-12-02_6

G Data
Adware.SwiftBrowse.CH
16.2.24

IKARUS anti.virus
AdWare.SpadeCast
t3scan.1.6.1.0

McAfee
RDN/Generic.dx!ddg
5600.6491

MicroWorld eScan
Adware.SwiftBrowse.CH
17.0.0.129

Norman
Adware.SwiftBrowse.CT
11.20160212

nProtect
Adware.SwiftBrowse.CH
14.11.17.01

Reason Heuristics
PUP.Yontoo.Fortunitas (M)
16.2.12.14

Sophos
BrowseSmart
4.98

Trend Micro House Call
TROJ_GEN.F47V0604
7.2.43

Trend Micro
HS_BROWSEFOX.SM
10.465.12

VIPRE Antivirus
Trojan.Win32.Generic
28954

Zillya! Antivirus
Adware.Yotoon.Win64.14
2.0.0.1984

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\{b8a90375-3b37-4954-86de-f96c458c4ce2}w64.sys

Digital Signature
Signed by:
Fortunitas

Authority:
VeriSign, Inc.

Valid from:
11/27/2013 1:00:00 AM

Valid to:
11/28/2014 12:59:59 AM

Subject:
CN=Fortunitas, OU=Digital ID Class 3 - Microsoft Software Validation v2, O=Fortunitas, 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:
2F2F8BE6BBAEA40C49A9E24B7BE035FB

File PE Metadata
Compilation timestamp:
8/7/2014 1:52:18 AM

OS version:
6.1

OS bitness:
Win64

Subsystem:
Native (none required)

Linker version:
9.0

CTPH (ssdeep):
768:aot2dxF9O8ZF33iqiIy9387Hp9XcfBzSowidI+Tl:a9JRicy938Lp9eW1jul

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:
{b8a90375-3b37-4954-86de-f96c458c4ce2}w64

Type:
Kernel device driver (KernelDriver)

Group:
PNP_TDI


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