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{51b9c91c-8e38-40ae-80de-58a590512b6b}w.sys

TasticSurf

Part of the Yontoo adware component, a web browser plugin that injects unwanted ads in the browser. The file {51b9c91c-8e38-40ae-80de-58a590512b6b}w.sys by TasticSurf has been detected as adware by 20 anti-malware scanners. It runs as a Windows kernel mode device driver named “{51b9c91c-8e38-40ae-80de-58a590512b6b}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 TasticSurf)

Product:
StdLib

Version:
1.4.4.6 built by: WinDDK

MD5:
9ec48ce485e9ee54bb6691121b1860c8

SHA-1:
51c4cef421f5172a1bc34ad26966fd685032f406

SHA-256:
13851193cbe33e841e560795d5d5ac91f078ab9630049266d64a35f86b43b53d

Scanner detections:
20 / 68

Status:
Adware

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

Analysis date:
4/20/2024 4:00:27 AM UTC  (today)

Scan engine
Detection
Engine version

Lavasoft Ad-Aware
Adware.BrowseFox.V
804

Agnitum Outpost
PUA.BrowseFox
7.1.1

Avira AntiVirus
Adware/BrowseFox.A.1227
7.11.186.88

AVG
Generic
2015.0.3282

Bitdefender
Adware.BrowseFox.V
1.0.20.1635

Clam AntiVirus
Win.Adware.Netfilter-134
0.98/21411

Comodo Security
TrojWare.Win32.AltBrowse.IZZV
20097

Dr.Web
Tool.NetFilter.313
9.0.1.0327

Emsisoft Anti-Malware
Adware.BrowseFox.V
8.14.11.23.10

F-Prot
W32/A-76f53fd6
v6.4.7.1.166

F-Secure
Adware.BrowseFox.V
11.2014-23-11_1

G Data
Adware.BrowseFox
14.11.24

K7 AntiVirus
Trojan
13.185.14021

MicroWorld eScan
Adware.BrowseFox.V
15.0.0.981

NANO AntiVirus
Riskware.Win32.NetFilter.dgkdox
0.28.6.63362

nProtect
Adware.BrowseFox.V
14.11.14.01

Reason Heuristics
PUP.TasticSurf.k
14.11.23.10

Vba32 AntiVirus
AdWare.Win64.Yotoon
3.12.26.3

VIPRE Antivirus
Trojan.Win32.Generic
34828

Zillya! Antivirus
Backdoor.CPEX.Win32.29350
2.0.0.1983

File size:
42.2 KB (43,200 bytes)

Product version:
1.4.4.6

Copyright:
Copyright © 2013 StdLib

Original file name:
StdLib.sys

File type:
Driver (Win32 SYS)

Language:
English (United States)

Common path:
C:\Windows\System32\drivers\{51b9c91c-8e38-40ae-80de-58a590512b6b}w.sys

Digital Signature
Signed by:
TasticSurf

Authority:
VeriSign, Inc.

Valid from:
11/26/2013 9:00:00 PM

Valid to:
11/27/2014 8:59:59 PM

Subject:
CN=TasticSurf, OU=Digital ID Class 3 - Microsoft Software Validation v2, O=TasticSurf, 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:
7A9A017A31DB5E88B561FEDAF60E6163

File PE Metadata
Compilation timestamp:
11/14/2014 4:26:26 PM

OS version:
6.1

OS bitness:
Win32

Subsystem:
Native (none required)

Linker version:
9.0

CTPH (ssdeep):
768:lN0457WBZwpHs63E+X7BIrTsCEziDH+JgrVJddW:nhUcpH/0+LCf7EziDHhd

Entry address:
0xA03E

Entry point:
8B, FF, 55, 8B, EC, E8, BD, FF, FF, FF, 5D, E9, 20, 70, FF, FF, CC, CC, 94, A1, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, CE, A4, 00, 00, E0, 80, 00, 00, B4, A0, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 24, A5, 00, 00, 00, 80, 00, 00, EC, A0, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, A4, A9, 00, 00, 38, 80, 00, 00, C4, A0, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 9C, AA, 00, 00, 10, 80, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, FC, A4, 00, 00, 10, A5, 00, 00, E8, A4...
 
[+]

Code size:
28 KB (28,672 bytes)

Driver
Display name:
{51b9c91c-8e38-40ae-80de-58a590512b6b}w

Type:
Kernel device driver (KernelDriver)

Group:
PNP_TDI


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