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{bd3509e2-4f9f-429a-ad4f-d0f5142220fc}gw.sys

Zebar

Part of the Yontoo adware component, a web browser plugin that injects unwanted ads in the browser. The file {bd3509e2-4f9f-429a-ad4f-d0f5142220fc}gw.sys by Zebar has been detected as adware by 1 anti-malware scanner with very strong indications that the file is a potential threat. It runs as a Windows kernel mode device driver named “{bd3509e2-4f9f-429a-ad4f-d0f5142220fc}Gw”.
Publisher:
StdLib  (signed by Zebar)

Product:
StdLib

Version:
1.4.4.6 built by: WinDDK

MD5:
d7814d276fa0d9bfd667291d84fb25d8

SHA-1:
9be09a7e939bac6c3d12a82dba9f3c0e96fa6f78

SHA-256:
97b3b59f4cb799960a6d463c17b9a1e360fb742b6b1cb4461a1e52e873cf8d51

Scanner detections:
1 / 68

Status:
Adware

Explanation:
Belongs to the Sambreel/Yontoo progam that inserts various forms of advertising in the user's web browser, installed with minimal or no user consent.

Analysis date:
12/24/2024 12:35:29 PM UTC  (today)

Scan engine
Detection
Engine version

Reason Heuristics
PUP.Yontoo (M)
17.3.12.8

File size:
42.1 KB (43,144 bytes)

Product version:
1.4.4.6

Copyright:
Copyright © 2013 StdLib

Original file name:
StdLib.sys

File type:
Driver (Win32 SYS)

Language:
English (United States)

Common path:
C:\Windows\System32\drivers\{bd3509e2-4f9f-429a-ad4f-d0f5142220fc}gw.sys

Digital Signature
Signed by:
Zebar

Authority:
VeriSign, Inc.

Valid from:
3/9/2015 6:00:00 PM

Valid to:
4/8/2016 6:59:59 PM

Subject:
CN=Zebar, O=Zebar, 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:
171B17126D099A3420D3D8E3364A53F2

File PE Metadata
Compilation timestamp:
7/14/2015 12:37:49 PM

OS version:
6.1

OS bitness:
Win32

Subsystem:
Native (none required)

Linker version:
9.0

Entry address:
0xA03E

Entry point:
8B, FF, 55, 8B, EC, E8, BD, FF, FF, FF, 5D, E9, 20, 70, FF, FF, CC, CC, 94, A1, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, CE, A4, 00, 00, E0, 80, 00, 00, B4, A0, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 24, A5, 00, 00, 00, 80, 00, 00, EC, A0, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, A4, A9, 00, 00, 38, 80, 00, 00, C4, A0, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 9C, AA, 00, 00, 10, 80, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, FC, A4, 00, 00, 10, A5, 00, 00, E8, A4...
 
[+]

Entropy:
6.6147

Code size:
28 KB (28,672 bytes)

Driver
Display name:
{bd3509e2-4f9f-429a-ad4f-d0f5142220fc}Gw

Type:
Kernel device driver (KernelDriver)

Group:
PNP_TDI


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