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{b9a19c25-a741-47e5-91a2-0b62bef307ff}w64.sys

RightSurf

Part of the Yontoo adware component, a web browser plugin that injects unwanted ads in the browser. The file {b9a19c25-a741-47e5-91a2-0b62bef307ff}w64.sys by RightSurf has been detected as adware by 29 anti-malware scanners. It runs as a Windows 64-bit kernel mode device driver named “{b9a19c25-a741-47e5-91a2-0b62bef307ff}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 RightSurf)

Product:
StdLib

Version:
1.4.3.1 built by: WinDDK

MD5:
daf13cb79decd6d99be0d2f4f75a9bf5

SHA-1:
e7886e6736c02db265475a28685c0c4d0c4c7d45

SHA-256:
3def0032517cfe82ab1895a0364d698db78f75bf73af9f6fb05332c53f01aa61

Scanner detections:
29 / 68

Status:
Adware

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

Analysis date:
4/23/2024 7:17:33 PM UTC  (today)

Scan engine
Detection
Engine version

Lavasoft Ad-Aware
Adware.NetFilter.E
356

Agnitum Outpost
Trojan.BPlug
7.1.1

AhnLab V3 Security
Trojan/Win64.SwiftBrowse
2014.09.21

Avira AntiVirus
ADWARE/BrowseFox.apk
8.3.1.6

avast!
Win32:BrowseFox-Z [PUP]
2014.9-160214

AVG
Generic
2017.0.2834

Baidu Antivirus
Adware.Win32.BrowseFox
4.0.3.16214

Bitdefender
Adware.NetFilter.E
1.0.20.225

Bkav FE
W64.HfsAdware
1.3.0.6379

Clam AntiVirus
Win.Adware.Swiftbrowse-75
0.98/21411

Dr.Web
Trojan.Yontoo.1741
9.0.1.045

Emsisoft Anti-Malware
Adware.NetFilter
8.16.02.14.01

ESET NOD32
Win64/Riskware.NetFilter (variant)
10.10445

F-Prot
W64/A-a8e2f748
v6.4.7.1.166

F-Secure
Adware.NetFilter.E
11.2016-14-02_1

G Data
Adware.SwiftBrowse.BV
16.2.24

IKARUS anti.virus
AdWare.SpadeCast
t3scan.1.6.1.0

McAfee
Artemis!8DF070DBCA84
5600.6490

MicroWorld eScan
Adware.NetFilter.E
17.0.0.135

Norman
Adware.NetFilter.E
11.20160214

nProtect
Adware.NetFilter.E
14.09.19.01

Qihoo 360 Security
Win32/Virus.Adware.e7a
1.0.0.1015

Reason Heuristics
PUP.Yontoo.RightSurf (M)
16.2.14.1

Sophos
BrowseSmart
4.98

SUPERAntiSpyware
Adware.NetFilter/Variant
9325

Trend Micro House Call
TROJ_GEN.F47V0602
7.2.45

Trend Micro
TROJ_GEN.R0C1C0OBJ15
10.465.14

VIPRE Antivirus
Trojan.Win32.Generic
33290

Zillya! Antivirus
Adware.Yotoon.Win64.13
2.0.0.1976

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\{b9a19c25-a741-47e5-91a2-0b62bef307ff}w64.sys

Digital Signature
Signed by:
RightSurf

Authority:
VeriSign, Inc.

Valid from:
11/27/2013 12:00:00 AM

Valid to:
11/27/2014 11:59:59 PM

Subject:
CN=RightSurf, OU=Digital ID Class 3 - Microsoft Software Validation v2, O=RightSurf, 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:
1E2DA13430E7E93CEF3759B2E4F7A34B

File PE Metadata
Compilation timestamp:
1/31/2014 12:45:30 AM

OS version:
6.1

OS bitness:
Win64

Subsystem:
Native (none required)

Linker version:
9.0

CTPH (ssdeep):
768:cot2dxF9O8ZF33iqiIy938bWp9XcfBvJkowidInD9dD:c9JRicy938ip9ea1jTD

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:
{b9a19c25-a741-47e5-91a2-0b62bef307ff}w64

Type:
Kernel device driver (KernelDriver)

Group:
PNP_TDI


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