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{a3f28269-ad17-41a8-b032-3e0313ef8979}gw.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}gw.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 kernel mode device driver named “{a3f28269-ad17-41a8-b032-3e0313ef8979}Gw”.
Publisher:
StdLib  (signed by Greener Web)

Product:
StdLib

Version:
1.4.3.1 built by: WinDDK

MD5:
a01590a8499575aeca35f0c149017b77

SHA-1:
8d6edc7d5837b1d8baa5c27b0c8b00eeae046dbf

SHA-256:
643d84ac7ddd6fd57c0278e0331dcab32fc60bd85408aea38964b570f80ef3b4

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:
4/18/2024 9:59:08 PM UTC  (today)

Scan engine
Detection
Engine version

Reason Heuristics
Threat.Win.Reputation.IMP
14.6.12.12

File size:
51.6 KB (52,824 bytes)

Product version:
1.4.3.1

Copyright:
Copyright © 2013 StdLib

Original file name:
StdLib.sys

File type:
Driver (Win32 SYS)

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

Digital Signature
Signed by:
Greener Web

Authority:
DigiCert Inc

Valid from:
6/5/2014 3:00:00 AM

Valid to:
6/10/2015 3:00:00 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 3:45:28 AM

OS version:
6.1

OS bitness:
Win32

Subsystem:
Native (none required)

Linker version:
9.0

CTPH (ssdeep):
768:mIsHpnKHCBSqUPJHKQpkJxpKwT2bcWiJmOtX3g2rp3lnZ4w2GM4r:RsHRKHLJqQpkYwTsiTtXxtOwo4r

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...
 
[+]

Entropy:
6.3326

Code size:
37 KB (37,888 bytes)

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

Type:
Kernel device driver (KernelDriver)

Group:
PNP_TDI


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