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{9acd1534-e8f8-40cb-b5ac-4996fe01175b}w64.sys

Scan Tack

Part of the Yontoo adware component, a web browser plugin that injects unwanted ads in the browser. The file {9acd1534-e8f8-40cb-b5ac-4996fe01175b}w64.sys by Scan Tack has been detected as adware by 8 anti-malware scanners. It runs as a Windows 64-bit kernel mode device driver named “{9acd1534-e8f8-40cb-b5ac-4996fe01175b}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 Scan Tack)

Product:
StdLib

Version:
1.4.3.1 built by: WinDDK

MD5:
c5023b5b624def21ca1db67e4ef3aea9

SHA-1:
33a76033381ded167e5617fa4007d2dbc791e534

SHA-256:
740704a51f1dc7572dd458b31b17335790488716ba1308aab6a841e9ef76656f

Scanner detections:
8 / 68

Status:
Adware

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

Analysis date:
4/19/2024 6:15:04 PM UTC  (today)

Scan engine
Detection
Engine version

AVG
Generic
2015.0.3401

Baidu Antivirus
Adware.Win32.BrowseFox
4.0.3.14726

IKARUS anti.virus
AdWare.SpadeCast
t3scan.1.6.1.0

McAfee
Artemis!714DFE7CFF6A
5600.7057

Reason Heuristics
PUP.ScanTack.m
14.7.26.14

Sophos
BrowseSmart
4.98

Trend Micro House Call
Suspicious_GEN.F47V0615
7.2.207

VIPRE Antivirus
Trojan.Win32.Generic
30548

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\{9acd1534-e8f8-40cb-b5ac-4996fe01175b}w64.sys

Digital Signature
Signed by:
Scan Tack

Authority:
VeriSign, Inc.

Valid from:
1/21/2014 7:00:00 PM

Valid to:
1/22/2015 6:59:59 PM

Subject:
CN=Scan Tack, OU=Digital ID Class 3 - Microsoft Software Validation v2, O=Scan Tack, 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:
44D91A3142283CE62B23F23C84838B0D

File PE Metadata
Compilation timestamp:
1/30/2014 7:45:30 PM

OS version:
6.1

OS bitness:
Win64

Subsystem:
Native (none required)

Linker version:
9.0

CTPH (ssdeep):
768:mot2dxF9O8ZF33iqiIy938bWp9XcfBvJkowidIns:m9JRicy938ip9ea1js

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:
{9acd1534-e8f8-40cb-b5ac-4996fe01175b}w64

Type:
Kernel device driver (KernelDriver)

Group:
PNP_TDI


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