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{9acd1534-e8f8-40cb-b5ac-4996fe01175b}w.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}w.sys by Scan Tack has been detected as adware by 6 anti-malware scanners. It runs as a Windows kernel mode device driver named “{9acd1534-e8f8-40cb-b5ac-4996fe01175b}w”. 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:
1419b3231f9909cf7268a505f5af5647

SHA-1:
d7fd44fe6caada5d53d702b005e02afbe98d2c70

SHA-256:
3bcac4092ed7cfb84dfeab38f21d695a481a61ac3b4386a4e81410fe4671f23a

Scanner detections:
6 / 68

Status:
Adware

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

Analysis date:
4/17/2024 11:41:12 PM UTC  (a few moments ago)

Scan engine
Detection
Engine version

AVG
Generic
2015.0.3375

Baidu Antivirus
Adware.Win32.BrowseFox
4.0.3.14821

McAfee
Artemis!1419B3231F99
5600.7031

Reason Heuristics
PUP.ScanTack.k
14.8.21.13

Trend Micro House Call
Suspicious_GEN.F47V0627
7.2.233

VIPRE Antivirus
Trojan.Win32.Generic
31570

File size:
51.7 KB (52,920 bytes)

Product version:
1.4.3.1

Copyright:
Copyright © 2013 StdLib

Original file name:
StdLib.sys

File type:
Driver (Win32 SYS)

Language:
English (United States)

Common path:
C:\Windows\System32\drivers\{9acd1534-e8f8-40cb-b5ac-4996fe01175b}w.sys

Digital Signature
Signed by:
Scan Tack

Authority:
VeriSign, Inc.

Valid from:
1/22/2014 5:30:00 AM

Valid to:
1/23/2015 5:29:59 AM

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 6:15:28 AM

OS version:
6.1

OS bitness:
Win32

Subsystem:
Native (none required)

Linker version:
9.0

CTPH (ssdeep):
768:aIsHpnKHCBSqUPJHKQpkJxpKwT2bcWiJmOtX3g2rp3lnH6w:dsHRKHLJqQpkYwTsiTtXxtaw

Entry address:
0xC03E

Entry point:
8B, FF, 55, 8B, EC, E8, BD, FF, FF, FF, 5D, E9, 62, 50, FF, FF, CC, CC, 74, C1, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, BC, C4, 00, 00, C0, A0, 00, 00, B4, C0, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 12, C5, 00, 00, 00, A0, 00, 00, EC, C0, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, AE, C8, 00, 00, 38, A0, 00, 00, C4, C0, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, A6, C9, 00, 00, 10, A0, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, EA, C4, 00, 00, FE, C4, 00, 00, D6, C4...
 
[+]

Entropy:
6.3550

Code size:
37 KB (37,888 bytes)

Driver
Display name:
{9acd1534-e8f8-40cb-b5ac-4996fe01175b}w

Type:
Kernel device driver (KernelDriver)

Group:
PNP_TDI


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