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{74dbfc99-254e-417c-90dc-c072c74c853a}w64.sys

SaltarSmart

Part of the Yontoo adware component, a web browser plugin that injects unwanted ads in the browser. The file {74dbfc99-254e-417c-90dc-c072c74c853a}w64.sys by SaltarSmart has been detected as adware by 29 anti-malware scanners. It runs as a Windows 64-bit kernel mode device driver named “{74dbfc99-254e-417c-90dc-c072c74c853a}w64”. 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 SaltarSmart)

Product:
StdLib

Version:
1.4.4.6 built by: WinDDK

MD5:
31d00a383552499d00d7890e6f68f1fd

SHA-1:
8ed051ed9b9116f347ef4814130a62efe467af90

SHA-256:
0d6c2faa299ae2745df3b962d5d85512a3e8e6c577a2c03a315e5e02b43a2110

Scanner detections:
29 / 68

Status:
Adware

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

Analysis date:
4/24/2024 2:01:35 AM UTC  (today)

Scan engine
Detection
Engine version

Lavasoft Ad-Aware
Adware.SwiftBrowse.CH
362

Agnitum Outpost
Riskware.Agent
7.1.1

AhnLab V3 Security
Win-PUP/BrowseFox.Gen
2015.03.19

avast!
MSIL:BrowseFox-AR [PUP]
2014.9-160208

AVG
SaltarSmart
2017.0.2840

Baidu Antivirus
Adware.Win32.BrowseFox
4.0.3.1628

Bitdefender
Adware.SwiftBrowse.CH
1.0.20.195

Bkav FE
W64.HfsAdware
1.3.0.6379

Clam AntiVirus
Win.Adware.Swiftbrowse-497
0.98/20227

Dr.Web
Trojan.Yontoo.1734
9.0.1.039

Emsisoft Anti-Malware
Adware.SwiftBrowse.CH
8.16.02.08.05

ESET NOD32
Win64/BrowseFox.CA (variant)
10.10944

Fortinet FortiGate
Adware/Zaitu
2/8/2016

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

F-Secure
Adware.SwiftBrowse.CH
11.2016-08-02_2

G Data
Adware.SwiftBrowse.CH
16.2.25

K7 AntiVirus
Adware
13.201.15304

Kaspersky
not-a-virus:AdWare.Win32.Zaitu
14.0.0.694

McAfee
Artemis!FAFB7A16F87D
5600.6496

MicroWorld eScan
Adware.SwiftBrowse.CH
17.0.0.117

Norman
Adware.SwiftBrowse.CH
11.20160208

nProtect
Adware.SwiftBrowse.CH
15.03.18.01

Reason Heuristics
PUP.Yontoo.SaltarSmart (M)
16.2.8.5

Sophos
PUA 'Browse Fox'
5.12

SUPERAntiSpyware
Adware.BrowseFox/Variant
9337

Trend Micro House Call
HS_BROWSEFOX.SM
7.2.39

Trend Micro
HS_BROWSEFOX.SM
10.465.08

VIPRE Antivirus
Threat.4150696
38050

Zillya! Antivirus
Adware.Yotoon.Win64.14
2.0.0.2105

File size:
47.7 KB (48,832 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\{74dbfc99-254e-417c-90dc-c072c74c853a}w64.sys

Digital Signature
Signed by:
SaltarSmart

Authority:
VeriSign, Inc.

Valid from:
8/13/2013 8:00:00 AM

Valid to:
8/14/2015 7:59:59 AM

Subject:
CN=SaltarSmart, OU=Digital ID Class 3 - Microsoft Software Validation v2, O=SaltarSmart, 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:
75908B9BAFC78AEAC30578D5193F6DC8

File PE Metadata
Compilation timestamp:
3/31/2015 4:27:01 PM

OS version:
6.1

OS bitness:
Win64

Subsystem:
Native (none required)

Linker version:
9.0

CTPH (ssdeep):
768:lG7G2EjsnyXeOUEGG0LA8tWFZuL470h6aqxcCT2kvsVRwlZD3jz:oFID6EGnLA8AFJTNEVmD3

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:
6.3939

Code size:
34.5 KB (35,328 bytes)

Driver
Display name:
{74dbfc99-254e-417c-90dc-c072c74c853a}w64

Type:
Kernel device driver (KernelDriver)

Group:
PNP_TDI


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