{c83c7c03-36f9-4f8f-aa6d-c837575d4eca}gw64.sys

Browse Fox

Part of the Yontoo adware component, a web browser plugin that injects unwanted ads in the browser. The file {c83c7c03-36f9-4f8f-aa6d-c837575d4eca}gw64.sys by Browse Fox has been detected as adware by 11 anti-malware scanners. It runs as a Windows 64-bit kernel mode device driver named “{c83c7c03-36f9-4f8f-aa6d-c837575d4eca}Gw64”. 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 Browse Fox)

Product:
StdLib

Version:
1.4.3.1 built by: WinDDK

MD5:
9d6ed0b7e658410f210b6154f6c47a2c

SHA-1:
71a04a88ef249043005796ef451bca8958458343

SHA-256:
bc2594401140ec829c9e55a5a9eb9ef4f51552cbea0a05e77bc58cccd7ae4e32

Scanner detections:
11 / 68

Status:
Adware

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

Analysis date:
12/8/2016 3:14:15 AM UTC  (today)

Scan engine
Detection
Engine version

AVG
Skodna.BrowseFox
2015.0.3448

Baidu Antivirus
Adware.Win32.BrowseFox
4.0.3.14610

IKARUS anti.virus
AdWare.SpadeCast
t3scan.1.6.1.0

Reason Heuristics
PUP.BrowseFox.n
14.8.7.21

Sophos
BrowseSmart
4.98

Trend Micro House Call
TROJ_GEN.F47V0429
7.2.161

VIPRE Antivirus
Trojan.Win32.Generic
29700

File size:
59.7 KB (61,120 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\{c83c7c03-36f9-4f8f-aa6d-c837575d4eca}gw64.sys

Digital Signature
Signed by:

Authority:
VeriSign, Inc.

Valid from:
7/30/2013 2:00:00 AM

Valid to:
7/31/2014 1:59:59 AM

Subject:
CN=Browse Fox, OU=Digital ID Class 3 - Microsoft Software Validation v2, O=Browse Fox, 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:
3DA9F504A9E9628C2224F40C9EA90C86

File PE Metadata
OS bitness:
Win64

CTPH (ssdeep):
768:Lot2dxF9O8ZF33iqiIy938bWp9XcfBvJkowidIvPs1Q/:L9JRicy938ip9ea1jvN/

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:
5.9627

Driver
Display name:
{c83c7c03-36f9-4f8f-aa6d-c837575d4eca}Gw64

Type:
Kernel device driver (KernelDriver)

Group:
PNP_TDI