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{2b929fe1-284b-4766-afb9-19b0915b99b0}gw.sys

focusbase

Part of the Yontoo adware component, a web browser plugin that injects unwanted ads in the browser. The file {2b929fe1-284b-4766-afb9-19b0915b99b0}gw.sys by focusbase has been detected as adware by 6 anti-malware scanners. It runs as a Windows kernel mode device driver named “{2b929fe1-284b-4766-afb9-19b0915b99b0}Gw”. 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 focusbase)

Product:
StdLib

Version:
1.4.3.1 built by: WinDDK

MD5:
e2831429ef2d8586f8761cabc02cbc37

SHA-1:
3136a08c553adc76f533042c5b243ac06eea4adb

SHA-256:
c7ebd04491b6bfb2cf5bb0a3a72299a671e49195013ecd2ed24df4b0a1ea703b

Scanner detections:
6 / 68

Status:
Adware

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

Analysis date:
4/16/2024 1:10:40 PM UTC  (today)

Scan engine
Detection
Engine version

AVG
Focusbase
2015.0.3404

Baidu Antivirus
Adware.Win32.BrowseFox
4.0.3.14723

Panda Antivirus
Adware/BrowserFox
14.07.23.03

Reason Heuristics
PUP.focusbase.l
14.7.23.15

Trend Micro House Call
Suspicious_GEN.F47V0706
7.2.204

VIPRE Antivirus
Threat.4150696
31208

File size:
51.7 KB (52,928 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\{2b929fe1-284b-4766-afb9-19b0915b99b0}gw.sys

Digital Signature
Signed by:
focusbase

Authority:
VeriSign, Inc.

Valid from:
4/22/2014 2:00:00 AM

Valid to:
4/23/2015 1:59:59 AM

Subject:
CN=focusbase, OU=Digital ID Class 3 - Microsoft Software Validation v2, O=focusbase, 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:
229BE95AFAF17766126629CC0A897C5F

File PE Metadata
Compilation timestamp:
1/31/2014 1:45:28 AM

OS version:
6.1

OS bitness:
Win32

Subsystem:
Native (none required)

Linker version:
9.0

CTPH (ssdeep):
768:gIsHpnKHCBSqUPJHKQpkJxpKwT2bcWiJmOtX3g2rp3lnzYqVu:XsHRKHLJqQpkYwTsiTtXxtv0

Entry address:
0xC03E

Entry point:
8B, FF, 55, 8B, EC, E8, BD, FF, FF, FF, 5D, E9, 62, 50, FF, FF, CC, CC, 74, C1, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, BC, C4, 00, 00, C0, A0, 00, 00, B4, C0, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 12, C5, 00, 00, 00, A0, 00, 00, EC, C0, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, AE, C8, 00, 00, 38, A0, 00, 00, C4, C0, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, A6, C9, 00, 00, 10, A0, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, EA, C4, 00, 00, FE, C4, 00, 00, D6, C4...
 
[+]

Code size:
37 KB (37,888 bytes)

Driver
Display name:
{2b929fe1-284b-4766-afb9-19b0915b99b0}Gw

Type:
Kernel device driver (KernelDriver)

Group:
PNP_TDI


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