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{8d075910-3332-4e1b-83a0-de523a191c04}t.sys

Skywebber

Part of the Yontoo adware component, a web browser plugin that injects unwanted ads in the browser. The file {8d075910-3332-4e1b-83a0-de523a191c04}t.sys by Skywebber has been detected as adware by 9 anti-malware scanners. It runs as a Windows kernel mode device driver named “{8d075910-3332-4e1b-83a0-de523a191c04}t”. 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 Skywebber)

Product:
StdLib

Version:
1.4.3.1 built by: WinDDK

MD5:
d84260e4f999d701a9d1bca906b34292

SHA-1:
eaa8671bfba224bd33147e4c817965396a2af479

SHA-256:
cf4795b339a4b0e00b2ab3419107eb5ed98433340619cf899191901b25076c3e

Scanner detections:
9 / 68

Status:
Adware

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

Analysis date:
4/27/2024 12:07:57 AM UTC  (today)

Scan engine
Detection
Engine version

AVG
Generic
2015.0.3328

Baidu Antivirus
Adware.Win32.BrowseFox
4.0.3.14107

Dr.Web
Trojan.BPlug.117
9.0.1.05190

F-Prot
W32/A-3fb60f37
v6.4.7.1.166

NANO AntiVirus
Trojan.Win32.BPlug.dcxxfx
0.28.2.62483

Reason Heuristics
PUP.Skywebber.k
14.10.7.15

VIPRE Antivirus
Threat.4150696
33706

Zillya! Antivirus
Adware.Yotoon.Win64.2
2.0.0.1945

File size:
53.9 KB (55,224 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\{8d075910-3332-4e1b-83a0-de523a191c04}t.sys

Digital Signature
Signed by:
Skywebber

Authority:
VeriSign, Inc.

Valid from:
10/6/2013 8:00:00 PM

Valid to:
10/7/2014 7:59:59 PM

Subject:
CN=Skywebber, OU=Digital ID Class 3 - Microsoft Software Validation v2, O=Skywebber, 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:
06606AB25DD3CD2FC4C1610240BD0EF8

File PE Metadata
Compilation timestamp:
1/30/2014 7:46:38 PM

OS version:
6.1

OS bitness:
Win32

Subsystem:
Native (none required)

Linker version:
9.0

CTPH (ssdeep):
768:VbbP7EDNtMTw/RWDjR/McKV5qEXGBJgxgZ+4AOmvtnBU6+RR4A:pP7EJSTukuzTrGYs+JNBUtR5

Entry address:
0xA73E

Entry point:
8B, FF, 55, 8B, EC, E8, BD, FF, FF, FF, 5D, E9, CA, E3, FF, FF, CC, CC, B4, A7, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 84, AB, 00, 00, 94, 90, 00, 00, A0, A7, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, BA, AB, 00, 00, 80, 90, 00, 00, AC, A7, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, D6, AB, 00, 00, 8C, 90, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, A6, AB, 00, 00, 92, AB, 00, 00, 00, 00, 00, 00, C2, AB, 00, 00, 00, 00, 00, 00, AC, A8, 00, 00, C4, A8, 00, 00, D6, A8...
 
[+]

Entropy:
6.3486

Code size:
36.3 KB (37,120 bytes)

Driver
Display name:
{8d075910-3332-4e1b-83a0-de523a191c04}t

Type:
Kernel device driver (KernelDriver)

Group:
PNP_TDI


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