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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:
fd1bb22c904f7c32ee7ed4efb8af15e1

SHA-1:
d37663916145cf3dc61e8e30437a03e9b57930e8

SHA-256:
ae8e7430a75fb00ea7be8420f4e54f7ae7a339a8c2b0a49a90262bd088cc48c4

Scanner detections:
8 / 68

Status:
Adware

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

Analysis date:
4/25/2024 2:57:05 AM UTC  (today)

Scan engine
Detection
Engine version

AVG
Generic
2015.0.3302

Baidu Antivirus
Adware.Win32.BrowseFox
4.0.3.14112

IKARUS anti.virus
AdWare.SpadeCast
t3scan.1.6.1.0

McAfee
Artemis!FD1BB22C904F
5600.6958

Reason Heuristics
PUP.ScanTack.m
14.11.2.12

Sophos
BrowseSmart
4.98

Trend Micro House Call
Suspicious_GEN.F47V0617
7.2.306

VIPRE Antivirus
Trojan.Win32.Generic
30608

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:
1/22/2014 12:00:00 AM

Valid to:
1/22/2015 11:59:59 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:
1/31/2014 12:45:30 AM

OS version:
6.1

OS bitness:
Win64

Subsystem:
Native (none required)

Linker version:
9.0

CTPH (ssdeep):
768:Fot2dxF9O8ZF33iqiIy938bWp9XcfBvJkowidInM:F9JRicy938ip9ea1jM

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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