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{c83c7c03-36f9-4f8f-aa6d-c837575d4eca}gw.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}gw.sys by Browse Fox 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 “{c83c7c03-36f9-4f8f-aa6d-c837575d4eca}Gw”.
Publisher:
StdLib  (signed by Browse Fox)

Product:
StdLib

Version:
1.4.3.1 built by: WinDDK

MD5:
9328ba0b1b8a311aaae58757d8dacee7

SHA-1:
bfb7db260008b07bc49f23964f8cbb4350af3f03

SHA-256:
1a1342be5e0826bf1a48dc2e2b7a3f68d2e8ee4c8f70e7c6ccb9e266c850b739

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:
4/29/2024 7:37:45 PM UTC  (today)

Scan engine
Detection
Engine version

Reason Heuristics
PUP.Yontoo (M)
17.3.12.7

File size:
38.1 KB (39,056 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\{c83c7c03-36f9-4f8f-aa6d-c837575d4eca}gw.sys

Digital Signature
Signed by:
Browse Fox

Authority:
VeriSign, Inc.

Valid from:
8/5/2014 5:30:00 AM

Valid to:
9/5/2015 5:29:59 AM

Subject:
CN=Browse Fox, 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:
01384FB7929C948C4A9ACD0BC2F3E8C0

File PE Metadata
Compilation timestamp:
9/13/2014 5:02:59 AM

OS version:
6.1

OS bitness:
Win32

Subsystem:
Native (none required)

Linker version:
9.0

Entry address:
0x903E

Entry point:
8B, FF, 55, 8B, EC, E8, BD, FF, FF, FF, 5D, E9, 20, 80, FF, FF, CC, CC, 74, 91, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, AE, 94, 00, 00, C0, 70, 00, 00, B4, 90, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 04, 95, 00, 00, 00, 70, 00, 00, EC, 90, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, A0, 98, 00, 00, 38, 70, 00, 00, C4, 90, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 98, 99, 00, 00, 10, 70, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, DC, 94, 00, 00, F0, 94, 00, 00, C8, 94...
 
[+]

Entropy:
6.6588

Code size:
24.5 KB (25,088 bytes)

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

Type:
Kernel device driver (KernelDriver)

Group:
PNP_TDI


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