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{9e891144-6b11-4b15-831d-1fc05f439ef4}w.sys

AtuZi

Part of the Yontoo adware component, a web browser plugin that injects unwanted ads in the browser. The file {9e891144-6b11-4b15-831d-1fc05f439ef4}w.sys by AtuZi has been detected as adware by 3 anti-malware scanners. It runs as a Windows kernel mode device driver named “{9e891144-6b11-4b15-831d-1fc05f439ef4}w”.
Publisher:
StdLib  (signed by AtuZi)

Product:
StdLib

Version:
1.4.3.1 built by: WinDDK

MD5:
f8c75001ff8fc137933b2440c9f48676

SHA-1:
6bbd1ac968d8f7054b9fedd96ee975c2cc94fb87

SHA-256:
a360cfdbc58fba49fd389834dc00631990da4a571e74c04e51b9defece33983a

Scanner detections:
3 / 68

Status:
Adware

Explanation:
Belongs to the Sambreel/Yontoo progam that inserts various forms of advertising in the user's web browser, installed with minimal or no user consent.

Analysis date:
5/16/2024 9:21:07 PM UTC  (today)

Scan engine
Detection
Engine version

AVG
Generic
2015.0.3457

Reason Heuristics
PUP.AtuZi.k
14.7.7.15

VIPRE Antivirus
Threat.4150696
29800

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\{9e891144-6b11-4b15-831d-1fc05f439ef4}w.sys

Digital Signature
Signed by:
AtuZi

Authority:
VeriSign, Inc.

Valid from:
4/17/2014 2:00:00 AM

Valid to:
4/18/2015 1:59:59 AM

Subject:
CN=AtuZi, OU=Digital ID Class 3 - Microsoft Software Validation v2, O=AtuZi, L=Santa Monica, 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:
1095EBEC0EFD96E9E4C801DCA0909C26

File PE Metadata
Compilation timestamp:
1/31/2014 1:45:28 AM

OS version:
6.1

OS bitness:
Win32

Subsystem:
Native (none required)

Linker version:
9.0

CTPH (ssdeep):
768:iIsHpnKHCBSqUPJHKQpkJxpKwT2bcWiJmOtX3g2rp3lnbTN3Fi:1sHRKHLJqQpkYwTsiTtXxtl3Fi

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:
6.3543

Code size:
37 KB (37,888 bytes)

Driver
Display name:
{9e891144-6b11-4b15-831d-1fc05f439ef4}w

Type:
Kernel device driver (KernelDriver)

Group:
PNP_TDI


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