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{efa349b9-003c-4506-9e55-957c1cff853c}gw64.sys

SmarterPower

Part of the Yontoo adware component, a web browser plugin that injects unwanted ads in the browser. The file {efa349b9-003c-4506-9e55-957c1cff853c}gw64.sys by SmarterPower has been detected as adware by 26 anti-malware scanners. It runs as a Windows 64-bit kernel mode device driver named “{efa349b9-003c-4506-9e55-957c1cff853c}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 SmarterPower)

Product:
StdLib

Version:
1.4.4.6 built by: WinDDK

MD5:
d88f0b412e71bc7dd611e497c5d4ef6c

SHA-1:
c104e196821191d275e3c957fa4e4fe69bc135f0

SHA-256:
cc0c617690296bd05cf0e4855d58e319618dded6e733d8d34f243b14a4d6925e

Scanner detections:
26 / 68

Status:
Adware

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

Analysis date:
4/26/2024 7:36:33 PM UTC  (today)

Scan engine
Detection
Engine version

Lavasoft Ad-Aware
Adware.SwiftBrowse.CH
804

Agnitum Outpost
Riskware.Agent
7.1.1

AhnLab V3 Security
Trojan/Win64.SwiftBrowse
2014.09.25

AVG
Generic
2015.0.3282

Baidu Antivirus
Adware.Win64.BrowseFox
4.0.3.141123

Bitdefender
Adware.SwiftBrowse.CH
1.0.20.1635

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

Dr.Web
Tool.NetFilter.313
9.0.1.0327

Emsisoft Anti-Malware
Adware.SwiftBrowse.CH
8.14.11.23.08

ESET NOD32
Win64/BrowseFox (variant)
8.10658

Fortinet FortiGate
Adware/BrowseFox
11/23/2014

F-Prot
W64/A-bd57be8c
v6.4.7.1.166

F-Secure
Adware.SwiftBrowse.CH
11.2014-23-11_1

G Data
Adware.SwiftBrowse.CH
14.11.24

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

McAfee
Artemis!D88F0B412E71
5600.6938

MicroWorld eScan
Adware.SwiftBrowse.CH
15.0.0.981

NANO AntiVirus
Riskware.Win64.NetFilter.dhhcvj
0.28.6.62995

nProtect
Adware.SwiftBrowse.CH
14.10.31.01

Panda Antivirus
Adware/BrowserFox
14.11.23.08

Reason Heuristics
PUP.SmarterPower.n
14.11.23.8

Rising Antivirus
PE:Trojan.Win32.Generic.17848EA5!394563237
23.00.65.141121

Sophos
Browse Fox
4.98

Trend Micro House Call
Suspicious_GEN.F47V0730
7.2.327

VIPRE Antivirus
Trojan.Win32.Generic
34454

Zillya! Antivirus
Adware.Yotoon.Win64.14
2.0.0.1974

File size:
47.6 KB (48,792 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\{efa349b9-003c-4506-9e55-957c1cff853c}gw64.sys

Digital Signature
Signed by:
SmarterPower

Authority:
VeriSign, Inc.

Valid from:
8/5/2014 2:00:00 AM

Valid to:
8/6/2015 1:59:59 AM

Subject:
CN=SmarterPower, O=SmarterPower, 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:
38D7C83A73CB4E3AC85648608E3170D8

File PE Metadata
Compilation timestamp:
9/22/2014 9:01:54 PM

OS version:
6.1

OS bitness:
Win64

Subsystem:
Native (none required)

Linker version:
9.0

CTPH (ssdeep):
768:lJ7G2EjsnyXeOUEGG0LA8tWFZuL470h6aqxcCT2kvsVRwlZD3IUznf:zFID6EGnLA8AFJTNEVmDI

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...
 
[+]

Code size:
34.5 KB (35,328 bytes)

Driver
Display name:
{efa349b9-003c-4506-9e55-957c1cff853c}Gw64

Type:
Kernel device driver (KernelDriver)

Group:
PNP_TDI


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