{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 10 anti-malware scanners. 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:
29c50636fa1886d819cd95ff1fe2b5df

SHA-1:
b9a5781f6144d12f92e6fb3308eb9ff478a952c3

SHA-256:
a3a074a814295b74e6c178f8beead85105714f45d71435089f6243387319f800

Scanner detections:
10 / 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:
12/9/2016 12:51:45 PM UTC  (today)

Scan engine
Detection
Engine version

AVG
Greeneb
2015.0.3447

IKARUS anti.virus
AdWare.SpadeCast
t3scan.1.6.1.0

Reason Heuristics
PUP.GreenerWeb.n
14.6.10.21

Sophos
BrowseSmart
4.98

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)

Common path:
C:\Windows\System32\drivers\{a3f28269-ad17-41a8-b032-3e0313ef8979}gw64.sys

Digital Signature
Signed by:

Authority:
DigiCert Inc

Valid from:
6/5/2014 4:00:00 AM

Valid to:
6/10/2015 4:00:00 PM

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:
1/31/2014 4:45:30 AM

OS version:
6.1

OS bitness:
Win64

Subsystem:
Native (none required)

Linker version:
9.0

CTPH (ssdeep):
768:yot2dxF9O8ZF33iqiIy938bWp9XcfBvJkowidIx4w2GMIq:y9JRicy938ip9ea1jmwoIq

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

Type:
Kernel device driver (KernelDriver)

Group:
PNP_TDI