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{bcd08fc8-cb56-41a3-8b19-3c556687a504}t.sys

esuack

Part of the Yontoo adware component, a web browser plugin that injects unwanted ads in the browser. The file {bcd08fc8-cb56-41a3-8b19-3c556687a504}t.sys by esuack has been detected as adware by 1 anti-malware scanner with very strong indications that the file is a potential threat. It runs as a Windows kernel mode device driver named “{bcd08fc8-cb56-41a3-8b19-3c556687a504}t”.
Publisher:
StdLib  (signed by esuack)

Product:
StdLib

Version:
1.4.3.1 built by: WinDDK

MD5:
07524c33d4b8a7bdae5ac007c02271e8

SHA-1:
6bcc21594525ca9cb4b3e27718772abf35de2522

SHA-256:
4f45eeebd5533a189f9813dd026f84c75da1687ae5660235c7c97dba00e29df5

Scanner detections:
1 / 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:
11/23/2024 6:16:21 AM UTC  (today)

Scan engine
Detection
Engine version

Reason Heuristics
PUP.Yontoo (M)
17.3.12.7

File size:
54.6 KB (55,864 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\{bcd08fc8-cb56-41a3-8b19-3c556687a504}t.sys

Digital Signature
Signed by:
esuack

Authority:
VeriSign, Inc.

Valid from:
4/22/2014 7:00:00 AM

Valid to:
4/23/2015 6:59:59 AM

Subject:
CN=esuack, OU=Digital ID Class 3 - Microsoft Software Validation v2, O=esuack, 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:
3E15E68E1D2AB32D262B79022F0F0D6E

File PE Metadata
Compilation timestamp:
2/22/2015 4:27:58 PM

OS version:
6.1

OS bitness:
Win32

Subsystem:
Native (none required)

Linker version:
9.0

Entry address:
0xA9BE

Entry point:
8B, FF, 55, 8B, EC, E8, BD, FF, FF, FF, 5D, E9, 2A, E4, FF, FF, CC, CC, 34, AA, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 04, AE, 00, 00, 94, 93, 00, 00, 20, AA, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 3A, AE, 00, 00, 80, 93, 00, 00, 2C, AA, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 56, AE, 00, 00, 8C, 93, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 26, AE, 00, 00, 12, AE, 00, 00, 00, 00, 00, 00, 42, AE, 00, 00, 00, 00, 00, 00, 2C, AB, 00, 00, 44, AB, 00, 00, 56, AB...
 
[+]

Entropy:
6.3456

Code size:
37 KB (37,888 bytes)

Driver
Display name:
{bcd08fc8-cb56-41a3-8b19-3c556687a504}t

Type:
Kernel device driver (KernelDriver)

Group:
PNP_TDI


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