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{f64c1459-b911-4fd8-a74e-36a496bf26e3}w64.sys

SpadeCast

Part of the Yontoo adware component, a web browser plugin that injects unwanted ads in the browser. The file {f64c1459-b911-4fd8-a74e-36a496bf26e3}w64.sys by SpadeCast has been detected as adware by 15 anti-malware scanners. It runs as a Windows 64-bit kernel mode device driver named “{f64c1459-b911-4fd8-a74e-36a496bf26e3}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 SpadeCast)

Product:
StdLib

Version:
1.4.3.1 built by: WinDDK

MD5:
4253841607ab2452e66fbb78d175c4d2

SHA-1:
50426217f1daea8d94a61027556a61088050dd31

SHA-256:
5c4d1d0bcaa85103218936a5b6c37556837635b58f3694ef1e436687435be422

Scanner detections:
15 / 68

Status:
Adware

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

Analysis date:
4/25/2024 10:18:30 AM UTC  (today)

Scan engine
Detection
Engine version

Lavasoft Ad-Aware
Adware.SpadeCast.A
674

AVG
MalSign.Skodna.glindorus
2016.0.3152

Baidu Antivirus
Adware.Win32.BrowseFox
4.0.3.1541

Bitdefender
Adware.SpadeCast.A
1.0.20.455

Emsisoft Anti-Malware
Adware.SpadeCast
8.15.04.01.03

F-Secure
Adware.SpadeCast.A
11.2015-01-04_4

G Data
Adware.SpadeCast
15.4.24

herdProtect (fuzzy)
variant of wstlib64.sys (Adware)
2015.7.6.11

IKARUS anti.virus
AdWare.SpadeCast
t3scan.1.6.1.0

MicroWorld eScan
Adware.SpadeCast.A
16.0.0.273

nProtect
Adware.SpadeCast.A
14.07.25.01

Reason Heuristics
PUP.Yontoo
15.4.1.15

Sophos
BrowseSmart
4.98

Trend Micro House Call
Suspicious_GEN.F47V0717
7.2.91

VIPRE Antivirus
Trojan.Win32.Generic
29996

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\{f64c1459-b911-4fd8-a74e-36a496bf26e3}w64.sys

Digital Signature
Signed by:
SpadeCast

Authority:
VeriSign, Inc.

Valid from:
1/12/2014 2:00:00 AM

Valid to:
1/13/2015 1:59:59 AM

Subject:
CN=SpadeCast, OU=Digital ID Class 3 - Microsoft Software Validation v2, O=SpadeCast, 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:
7BB64460053C27D48933A64C1DF97E74

File PE Metadata
Compilation timestamp:
1/31/2014 2:45:30 AM

OS version:
6.1

OS bitness:
Win64

Subsystem:
Native (none required)

Linker version:
9.0

CTPH (ssdeep):
768:0ot2dxF9O8ZF33iqiIy938bWp9XcfBvJkowidIna:09JRicy938ip9ea1ja

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...
 
[+]

Code size:
46.5 KB (47,616 bytes)

Driver
Display name:
{f64c1459-b911-4fd8-a74e-36a496bf26e3}w64

Type:
Kernel device driver (KernelDriver)

Group:
PNP_TDI


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