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{8dc666b5-f370-4f22-8558-6a137d48eead}gw64.sys

Source App

Part of the Yontoo adware component, a web browser plugin that injects unwanted ads in the browser. The file {8dc666b5-f370-4f22-8558-6a137d48eead}gw64.sys by Source App has been detected as adware by 19 anti-malware scanners. It runs as a Windows 64-bit kernel mode device driver named “{8dc666b5-f370-4f22-8558-6a137d48eead}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 Source App)

Product:
StdLib

Version:
1.4.4.6 built by: WinDDK

MD5:
e06593a7459576d319b8ae2bf97a514f

SHA-1:
fc4ccb42c31b504637e4d5d0c9dea29d9982466d

SHA-256:
08b009b7704f4373f0d90725e95fafe4503af25b9e2f2e6f530a7c2ab4c780f1

Scanner detections:
19 / 68

Status:
Adware

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

Analysis date:
4/25/2024 3:03:29 AM UTC  (today)

Scan engine
Detection
Engine version

Lavasoft Ad-Aware
Adware.SwiftBrowse.CH
735

Agnitum Outpost
Riskware.Agent
7.1.1

AVG
Generic
2016.0.3213

Bitdefender
Adware.SwiftBrowse.CH
1.0.20.155

Clam AntiVirus
Win.Adware.Swiftbrowse-497
0.98/21511

Dr.Web
Tool.NetFilter.313
9.0.1.031

Emsisoft Anti-Malware
Adware.SwiftBrowse.CH
8.15.01.31.06

ESET NOD32
Win64/BrowseFox.CG (variant)
9.11090

F-Prot
W64/A-59c9c70a
v6.4.7.1.166

F-Secure
Adware.SwiftBrowse.CH
11.2015-31-01_7

G Data
Adware.SwiftBrowse.CH
15.1.25

K7 AntiVirus
Adware
13.193.14791

MicroWorld eScan
Adware.SwiftBrowse.CH
16.0.0.93

nProtect
Adware.SwiftBrowse.CH
15.01.28.01

Reason Heuristics
PUP.Yontoo
15.1.31.6

Trend Micro House Call
HS_BROWSEFOX.SM
7.2.31

Trend Micro
HS_BROWSEFOX.SM
10.465.31

VIPRE Antivirus
Trojan.Win32.Generic
37066

Zillya! Antivirus
Adware.Yotoon.Win64.14
2.0.0.2048

File size:
47.6 KB (48,784 bytes)

Product version:
1.4.4.6

Copyright:
Copyright © 2013 StdLib

Original file name:
StdLib.sys

File type:
Driver (Win64 SYS)

Language:
English (United States)

Common path:
C:\Windows\System32\drivers\{8dc666b5-f370-4f22-8558-6a137d48eead}gw64.sys

Digital Signature
Signed by:
Source App

Authority:
VeriSign, Inc.

Valid from:
10/16/2014 2:00:00 AM

Valid to:
10/17/2015 1:59:59 AM

Subject:
CN=Source App, O=Source App, 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:
5436973D688F7AF7E3F875CD8B463EDD

File PE Metadata
Compilation timestamp:
1/29/2015 10:43:47 AM

OS version:
6.1

OS bitness:
Win64

Subsystem:
Native (none required)

Linker version:
9.0

CTPH (ssdeep):
768:ln7G2EjsnyXeOUEGG0LA8tWFZuL470h6aqxcCT2kvsVRwlZD3l/ID:NFID6EGnLA8AFJTNEVmDpID

Entry address:
0xC064

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, E2, 50, FF, FF, CC, CC, 78, C2, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 54, C6, 00, 00, A0, 91, 00, 00, 28, C1, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, DA, CA, 00, 00, 50, 90, 00, 00, D8, C0, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, D2, CB, 00, 00, 00, 90, 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, B6, CB, 00, 00, 00, 00, 00, 00, A2, CB, 00, 00...
 
[+]

Entropy:
6.3924

Code size:
34.5 KB (35,328 bytes)

Driver
Display name:
{8dc666b5-f370-4f22-8558-6a137d48eead}Gw64

Type:
Kernel device driver (KernelDriver)

Group:
PNP_TDI


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