{b0c7827f-c845-429a-833b-c2a798fc4fc3}gw.sys

TasticSurf

Part of the Yontoo adware component, a web browser plugin that injects unwanted ads in the browser. The file {b0c7827f-c845-429a-833b-c2a798fc4fc3}gw.sys by TasticSurf has been detected as adware by 12 anti-malware scanners. It runs as a Windows kernel mode device driver named “{b0c7827f-c845-429a-833b-c2a798fc4fc3}Gw”. 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:
89daef47b458b330dd735ded6f4a2512

SHA-1:
4a907e064b639314cbbfe2f9010b2c30e1cf6f11

SHA-256:
94875e15b8094a772024448b7fdcdf5f84a640670290b61566d1dc4001124f81

Scanner detections:
12 / 68

Status:
Adware

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

Analysis date:
4/25/2024 3:45:54 PM UTC  (today)

Scan engine
Detection
Engine version

Agnitum Outpost
PUA.BrowseFox
7.1.1

Avira AntiVirus
Adware/BrowseFox.A.1227
7.11.182.78

Baidu Antivirus
Adware.Win32.BrowseFox
4.0.3.141030

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

Dr.Web
hacktool program Tool.NetFilter.313
9.0.1.05190

F-Prot
W32/A-248e95ab
v6.4.7.1.166

NANO AntiVirus
Riskware.Win32.NetFilter.dgkdox
0.28.6.62995

Qihoo 360 Security
Win32/Virus.Adware.618
1.0.0.1015

Reason Heuristics
PUP.TasticSurf.l
14.11.3.21

Vba32 AntiVirus
AdWare.Win64.Yotoon
3.12.26.3

VIPRE Antivirus
Threat.4150696
34232

Zillya! Antivirus
Backdoor.CPEX.Win32.29350
2.0.0.1972

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\{b0c7827f-c845-429a-833b-c2a798fc4fc3}gw.sys

Digital Signature
Signed by:

Authority:
VeriSign, Inc.

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

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

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:
9/22/2014 9:01:51 PM

OS version:
6.1

OS bitness:
Win32

Subsystem:
Native (none required)

Linker version:
9.0

CTPH (ssdeep):
768:xN0457WBZwpHs63E+X7BIrTsCEziDH+JgrVJddrHg:ThUcpH/0+LCf7EziDHhdR

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:
{b0c7827f-c845-429a-833b-c2a798fc4fc3}Gw

Type:
Kernel device driver (KernelDriver)

Group:
PNP_TDI


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