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{25d71abf-7776-46f5-a269-9951331f9030}gw64.sys

linkswift

Part of the Yontoo adware component, a web browser plugin that injects unwanted ads in the browser. The file {25d71abf-7776-46f5-a269-9951331f9030}gw64.sys by linkswift has been detected as adware by 25 anti-malware scanners. It runs as a Windows 64-bit kernel mode device driver named “{25d71abf-7776-46f5-a269-9951331f9030}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 linkswift)

Product:
StdLib

Version:
1.4.3.1 built by: WinDDK

MD5:
533adffb12046bfe2aa11d920079270b

SHA-1:
c058e3a953055d02eaf056a80e208d1c2192f69d

SHA-256:
2981a4b4e4e5f960da2340cc1ee0c229f711fc17e7e01e3dcf3013aee7969710

Scanner detections:
25 / 68

Status:
Adware

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

Analysis date:
5/5/2024 1:56:09 AM UTC  (today)

Scan engine
Detection
Engine version

Lavasoft Ad-Aware
Adware.SwiftBrowse.CH
356

Agnitum Outpost
Riskware.Agent
7.1.1

AhnLab V3 Security
Trojan/Win64.SwiftBrowse
2014.09.23

Avira AntiVirus
Adware/BrowseFox.api
7.11.205.178

avast!
Win32:BrowseFox-H [PUP]
2014.9-160213

AVG
Generic
2017.0.2834

Baidu Antivirus
Adware.Win64.BrowseFox
4.0.3.16213

Bitdefender
Adware.SwiftBrowse.CH
1.0.20.220

Clam AntiVirus
Win.Adware.Swiftbrowse-497
0.98/21411

Dr.Web
Trojan.BPlug.123
9.0.1.044

Emsisoft Anti-Malware
Adware.SwiftBrowse.CH
8.16.02.13.05

ESET NOD32
Win64/Riskware.NetFilter.F application
10.7.0.302.0

F-Prot
W64/A-abca7297
v6.4.7.1.166

F-Secure
Adware.SwiftBrowse.CH
11.2016-13-02_7

G Data
Adware.SwiftBrowse.BV
16.2.24

IKARUS anti.virus
PUA.RiskWare.NetFilter
t3scan.1.7.8.0

MicroWorld eScan
Adware.SwiftBrowse.BV
17.0.0.132

Norman
Adware.NetFilter.E
11.20160213

nProtect
Adware.SwiftBrowse.CH
14.10.19.01

Reason Heuristics
PUP.Yontoo.linkswift (M)
16.2.13.17

Sophos
Browse Fox
4.98

Trend Micro House Call
TROJ_GEN.F47V0508
7.2.44

Trend Micro
TROJ_GEN.R0C1C0OAH15
10.465.13

VIPRE Antivirus
Trojan.Win32.Generic
34078

Zillya! Antivirus
Adware.Yotoon.Win64.14
2.0.0.1974

File size:
59.7 KB (61,112 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\{25d71abf-7776-46f5-a269-9951331f9030}gw64.sys

Digital Signature
Signed by:
linkswift

Authority:
VeriSign, Inc.

Valid from:
8/12/2013 5:00:00 AM

Valid to:
8/13/2015 4:59:59 AM

Subject:
CN=linkswift, OU=Digital ID Class 3 - Microsoft Software Validation v2, O=linkswift, 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:
3AD03D814D9E16358271D2CA8A94AB42

File PE Metadata
Compilation timestamp:
1/31/2014 5:45:30 AM

OS version:
6.1

OS bitness:
Win64

Subsystem:
Native (none required)

Linker version:
9.0

CTPH (ssdeep):
768:+ot2dxF9O8ZF33iqiIy938bWp9XcfBvJkowidInqF:+9JRicy938ip9ea1jqF

Entry address:
0xF064

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:
5.9646

Code size:
46.5 KB (47,616 bytes)

Driver
Display name:
{25d71abf-7776-46f5-a269-9951331f9030}Gw64

Type:
Kernel device driver (KernelDriver)

Group:
PNP_TDI


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