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{b8a90375-3b37-4954-86de-f96c458c4ce2}gw.sys

Fortunitas

Part of the Yontoo adware component, a web browser plugin that injects unwanted ads in the browser. The file {b8a90375-3b37-4954-86de-f96c458c4ce2}gw.sys by Fortunitas has been detected as adware by 9 anti-malware scanners. It runs as a Windows kernel mode device driver named “{b8a90375-3b37-4954-86de-f96c458c4ce2}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 Fortunitas)

Product:
StdLib

Version:
1.4.3.1 built by: WinDDK

MD5:
bfcf0daf7721c7e683aff38eac240047

SHA-1:
abdd68b7490efcb9e200f883ae8451621e999a53

SHA-256:
792a87c62c211765320e5062445aa5843fa7b197507ad4d9e35929f40a78f83e

Scanner detections:
9 / 68

Status:
Adware

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

Analysis date:
4/26/2024 1:27:07 PM UTC  (today)

Scan engine
Detection
Engine version

Lavasoft Ad-Aware
Adware.Mplug.DC
356

avast!
MSIL:BrowseFox-BK [PUP]
2014.9-160213

AVG
Adware AdPlugin
2017.0.2834

Dr.Web
Trojan.Yontoo.1742
9.0.1.044

Emsisoft Anti-Malware
Adware.Mplug.DC
8.16.02.13.05

F-Secure
Adware.Mplug.DC
11.2016-13-02_7

Norman
Adware.Mplug.DC
11.20160213

Reason Heuristics
PUP.Yontoo.Fortunitas (M)
16.2.13.17

VIPRE Antivirus
Trojan.Win32.Generic
29492

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\{b8a90375-3b37-4954-86de-f96c458c4ce2}gw.sys

Digital Signature
Signed by:
Fortunitas

Authority:
VeriSign, Inc.

Valid from:
11/27/2013 1:00:00 AM

Valid to:
11/28/2014 12:59:59 AM

Subject:
CN=Fortunitas, OU=Digital ID Class 3 - Microsoft Software Validation v2, O=Fortunitas, L=San Diego, 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:
2F2F8BE6BBAEA40C49A9E24B7BE035FB

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:fIsHpnKHCBSqUPJHKQpkJxpKwT2bcWiJmOtX3g2rp3lnLTIC:QsHRKHLJqQpkYwTsiTtXxtXIC

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:
{b8a90375-3b37-4954-86de-f96c458c4ce2}Gw

Type:
Kernel device driver (KernelDriver)

Group:
PNP_TDI


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