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{c83c7c03-36f9-4f8f-aa6d-c837575d4eca}w.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}w.sys by Browse Fox has been detected as adware by 20 anti-malware scanners. It runs as a Windows kernel mode device driver named “{c83c7c03-36f9-4f8f-aa6d-c837575d4eca}w”. 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:
241aa6de5e45ea2a68974771087ea641

SHA-1:
e3ce950826037e99a8b0fb79769315115810a951

SHA-256:
795562eb12e1bc7f4c2a806c1dde593dae41ca63dbb401e62ba5a044ca145b04

Scanner detections:
20 / 68

Status:
Adware

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

Analysis date:
4/26/2024 1:36:36 PM UTC  (today)

Scan engine
Detection
Engine version

Lavasoft Ad-Aware
Adware.Mplug.DC
357

Agnitum Outpost
PUA.Yotoon
7.1.1

AVG
Skodna.BrowseFox
2017.0.2835

Baidu Antivirus
Adware.Win32.BrowseFox
4.0.3.16212

Bitdefender
Adware.Mplug.DC
1.0.20.215

Clam AntiVirus
Win.Adware.Swiftbrowse-79
0.98/21411

Comodo Security
TrojWare.Win32.AltBrowse.IZZV
20026

Dr.Web
Trojan.BPlug.123
9.0.1.043

Emsisoft Anti-Malware
Adware.Mplug.DC
8.16.02.12.12

F-Prot
W32/A-dd00b781
v6.4.7.1.166

F-Secure
Adware.Mplug.DC
11.2016-12-02_6

G Data
Adware.Mplug.DC
16.2.24

McAfee
Artemis!898D084358C0
5600.6491

NANO AntiVirus
Riskware.Win32.Yotoon.ddghtt
0.28.6.62995

Qihoo 360 Security
HEUR/QVM00.1.Malware.Gen
1.0.0.1015

Reason Heuristics
PUP.Yontoo.BrowseFox (M)
16.2.12.12

Trend Micro House Call
Suspicious_GEN.F47V0620
7.2.43

Vba32 AntiVirus
AdWare.Win64.Yotoon
3.12.26.3

VIPRE Antivirus
Threat.4150696
34232

Zillya! Antivirus
Adware.Yotoon.Win64.1
2.0.0.1977

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

Digital Signature
Signed by:
Browse Fox

Authority:
VeriSign, Inc.

Valid from:
7/29/2013 5:00:00 PM

Valid to:
7/30/2014 4:59:59 PM

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
Compilation timestamp:
1/30/2014 4:45:28 PM

OS version:
6.1

OS bitness:
Win32

Subsystem:
Native (none required)

Linker version:
9.0

CTPH (ssdeep):
768:EIsHpnKHCBSqUPJHKQpkJxpKwT2bcWiJmOtX3g2rp3lnRdsIj:DsHRKHLJqQpkYwTsiTtXxtRFj

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:
6.3555

Code size:
37 KB (37,888 bytes)

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

Type:
Kernel device driver (KernelDriver)

Group:
PNP_TDI


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