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{b8a90375-3b37-4954-86de-f96c458c4ce2}t.sys

Fortunitas

Part of the Yontoo adware component, a web browser plugin that injects unwanted ads in the browser. The file {b8a90375-3b37-4954-86de-f96c458c4ce2}t.sys by Fortunitas has been detected as adware by 7 anti-malware scanners. It runs as a Windows kernel mode device driver named “{b8a90375-3b37-4954-86de-f96c458c4ce2}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 Fortunitas)

Product:
StdLib

Version:
1.4.3.1 built by: WinDDK

MD5:
775d9c7d1154934e7dcda66b53c258da

SHA-1:
0716b982754556b8e779b38c803675bd9a3e44ed

SHA-256:
03314c90912d8602a8984f4dbd3d38939013beca2ec6877056eb1f629e146bb6

Scanner detections:
7 / 68

Status:
Adware

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

Analysis date:
4/26/2024 10:02:06 AM UTC  (today)

Scan engine
Detection
Engine version

AVG
MalSign.Fortu
2017.0.2835

Baidu Antivirus
Adware.Win32.BrowseFox
4.0.3.16213

IKARUS anti.virus
AdWare.SwiftBrowse
t3scan.1.6.1.0

McAfee
Artemis!8E405C865199
5600.6491

Reason Heuristics
PUP.Yontoo.Fortunitas (M)
16.2.13.7

Trend Micro House Call
Suspicious_GEN.F47V0621
7.2.44

VIPRE Antivirus
Trojan.Win32.Generic
31392

File size:
53.8 KB (55,104 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\{b8a90375-3b37-4954-86de-f96c458c4ce2}t.sys

Digital Signature
Signed by:
Fortunitas

Authority:
VeriSign, Inc.

Valid from:
11/27/2013 1:00:00 AM

Valid to:
11/28/2014 12:59:59 AM

Subject:
CN=Fortunitas, OU=Digital ID Class 3 - Microsoft Software Validation v2, O=Fortunitas, 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:
2F2F8BE6BBAEA40C49A9E24B7BE035FB

File PE Metadata
Compilation timestamp:
8/7/2014 1:52:31 AM

OS version:
6.1

OS bitness:
Win32

Subsystem:
Native (none required)

Linker version:
9.0

CTPH (ssdeep):
768:3OnnE+ZwNszUTw/RqzGojR/h3cKG45q30XGBUuJ0xEkMHd8OagKmvz11/6RRRFTP:UnERxTukHzTrGCuGOVh1/yRTP

Entry address:
0xA6BE

Entry point:
8B, FF, 55, 8B, EC, E8, BD, FF, FF, FF, 5D, E9, 4A, E4, FF, FF, CC, CC, 34, A7, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 04, AB, 00, 00, 94, 90, 00, 00, 20, A7, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 3A, AB, 00, 00, 80, 90, 00, 00, 2C, A7, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 56, 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, 26, AB, 00, 00, 12, AB, 00, 00, 00, 00, 00, 00, 42, AB, 00, 00, 00, 00, 00, 00, 2C, A8, 00, 00, 44, A8, 00, 00, 56, A8...
 
[+]

Code size:
36.3 KB (37,120 bytes)

Driver
Display name:
{b8a90375-3b37-4954-86de-f96c458c4ce2}t

Type:
Kernel device driver (KernelDriver)

Group:
PNP_TDI


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