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{3bd202b6-51af-4fff-a406-c77ffd35d7bd}t.sys

Browsebeyond

Part of the Yontoo adware component, a web browser plugin that injects unwanted ads in the browser. The file {3bd202b6-51af-4fff-a406-c77ffd35d7bd}t.sys by Browsebeyond has been detected as adware by 12 anti-malware scanners. It runs as a Windows kernel mode device driver named “{3bd202b6-51af-4fff-a406-c77ffd35d7bd}t”. 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 Browsebeyond)

Product:
StdLib

Version:
1.4.3.1 built by: WinDDK

MD5:
4fe62a724533a15efac0f09320dca168

SHA-1:
7ba1eedf24f45dc1b7c396256f875e08f86d2a98

SHA-256:
fd488d14a9a4dcb0c6526aa73c8f26c5e0fd6fc521d3155bfd9ca342b24b841f

Scanner detections:
12 / 68

Status:
Adware

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

Analysis date:
4/26/2024 5:35:50 PM UTC  (today)

Scan engine
Detection
Engine version

avast!
Win32:BrowseFox-CX [PUP]
150129-1

AVG
Vebreat
2016.0.3172

Baidu Antivirus
Adware.Win32.BrowseFox
4.0.3.15312

Bkav FE
W32.HfsAdware
1.3.0.6379

Comodo Security
TrojWare.Win32.AltBrowse.IZZV
21388

ESET NOD32
Win32/NetFilter.A potentially unsafe application
7.0.302.0

F-Prot
W32/A-dd00b781
v6.4.7.1.166

herdProtect (fuzzy)
variant of tstlib.sys (Adware)
2015.6.19.2

Reason Heuristics
PUP.Yontoo
15.3.12.15

Vba32 AntiVirus
AdWare.Yotoon
3.12.26.3

VIPRE Antivirus
Trojan.Win32.Generic
29310

Zillya! Antivirus
Adware.Yotoon.Win64.2
2.0.0.2097

File size:
53.9 KB (55,232 bytes)

Product version:
1.4.3.1

Copyright:
Copyright © 2013 StdLib

Original file name:
StdLib.sys

File type:
Driver (Win32 SYS)

Language:
English (United States)

Common path:
C:\Windows\System32\drivers\{3bd202b6-51af-4fff-a406-c77ffd35d7bd}t.sys

Digital Signature
Signed by:
Browsebeyond

Authority:
VeriSign, Inc.

Valid from:
10/6/2013 8:00:00 PM

Valid to:
10/7/2014 7:59:59 PM

Subject:
CN=Browsebeyond, OU=Digital ID Class 3 - Microsoft Software Validation v2, O=Browsebeyond, 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:
5B076B434A8E42452548957D9992702C

File PE Metadata
Compilation timestamp:
1/30/2014 7:46:38 PM

OS version:
6.1

OS bitness:
Win32

Subsystem:
Native (none required)

Linker version:
9.0

CTPH (ssdeep):
768:VRbP7EDNtMTw/RWDjR/McKV5qEXGBJgxgZ+4AOmvtnBU6+RR0HZ:TP7EJSTukuzTrGYs+JNBUtRc

Entry address:
0xA73E

Entry point:
8B, FF, 55, 8B, EC, E8, BD, FF, FF, FF, 5D, E9, CA, E3, FF, FF, CC, CC, B4, A7, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 84, AB, 00, 00, 94, 90, 00, 00, A0, A7, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, BA, AB, 00, 00, 80, 90, 00, 00, AC, A7, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, D6, AB, 00, 00, 8C, 90, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, A6, AB, 00, 00, 92, AB, 00, 00, 00, 00, 00, 00, C2, AB, 00, 00, 00, 00, 00, 00, AC, A8, 00, 00, C4, A8, 00, 00, D6, A8...
 
[+]

Entropy:
6.3482

Code size:
36.3 KB (37,120 bytes)

Driver
Display name:
{3bd202b6-51af-4fff-a406-c77ffd35d7bd}t

Type:
Kernel device driver (KernelDriver)

Group:
PNP_TDI


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