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{a3f28269-ad17-41a8-b032-3e0313ef8979}gw64.sys

Greener Web

Part of the Yontoo adware component, a web browser plugin that injects unwanted ads in the browser. The file {a3f28269-ad17-41a8-b032-3e0313ef8979}gw64.sys by Greener Web 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 64-bit kernel mode device driver named “{a3f28269-ad17-41a8-b032-3e0313ef8979}Gw64”.
Publisher:
StdLib  (signed by Greener Web)

Product:
StdLib

Version:
1.4.3.1 built by: WinDDK

MD5:
49460907d25ca191af80ed9fc2cd3550

SHA-1:
c0bf0431142b92aba68b7b81cfda294ba50a47a5

SHA-256:
9da1753b1164050fd32ce79d070f8e6f8f3f913727a0f5821ee10cff9886f4fe

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:
4/26/2024 3:23:06 PM UTC  (today)

Scan engine
Detection
Engine version

Reason Heuristics
PUP.Yontoo (M)
16.10.29.15

File size:
59.6 KB (61,016 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\{a3f28269-ad17-41a8-b032-3e0313ef8979}gw64.sys

Digital Signature
Signed by:
Greener Web

Authority:
DigiCert Inc

Valid from:
6/4/2014 7:00:00 PM

Valid to:
6/10/2015 7:00:00 AM

Subject:
CN=Greener Web, O=Greener Web, L=Santa Monica, S=California, C=US

Issuer:
CN=DigiCert Assured ID Code Signing CA-1, OU=www.digicert.com, O=DigiCert Inc, C=US

Serial number:
07CF8E3C70EA58D06FE678225FF74862

File PE Metadata
Compilation timestamp:
1/30/2014 6:45:30 PM

OS version:
6.1

OS bitness:
Win64

Subsystem:
Native (none required)

Linker version:
9.0

CTPH (ssdeep):
384:xRot2dWYz9LPJm/1UTnycljRnZzbbV33kowidIxnYPLhw2Tyv1MIVD:Pot2dxF9O8ZF33kowidIx4w2GMIVD

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...
 
[+]

Entropy:
3.6094

Code size:
46.5 KB (47,616 bytes)

Driver
Display name:
{a3f28269-ad17-41a8-b032-3e0313ef8979}Gw64

Type:
Kernel device driver (KernelDriver)

Group:
PNP_TDI


herdProtect is a second line of defense malware removal platform powered by 68 anti-malware engines in the cloud. Since no single anti-malware program is perfect 100% of the time, herdProtect utilizes a 'herd' of multiple engines to guarantee the widest coverage and the earliest possible detection.