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{b0ead145-9535-4a5d-a554-40c27d154014}gw.sys

Steel Cut

Part of the Yontoo adware component, a web browser plugin that injects unwanted ads in the browser. The file {b0ead145-9535-4a5d-a554-40c27d154014}gw.sys by Steel Cut has been detected as adware by 32 anti-malware scanners. It runs as a Windows kernel mode device driver named “{b0ead145-9535-4a5d-a554-40c27d154014}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 Steel Cut)

Product:
StdLib

Version:
1.4.4.6 built by: WinDDK

MD5:
c80d752006869bafca4822dcb11f763a

SHA-1:
dc8f0aee558a32c23ac09f8d4100801aeadf6a79

SHA-256:
58994d8cb8daa6a779684b3a80d2e0e6995e437b0c07b538103347e386f4da22

Scanner detections:
32 / 68

Status:
Adware

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

Analysis date:
4/25/2024 5:56:35 PM UTC  (today)

Scan engine
Detection
Engine version

Lavasoft Ad-Aware
Adware.BrowseFox.V
521

Agnitum Outpost
PUA.BrowseFox
7.1.1

Avira AntiVirus
ADWARE/BrowseFox.A.1227
8.3.1.6

Arcabit
Adware.BrowseFox.V
1.0.0.425

AVG
Generic
2016.0.2999

Baidu Antivirus
Hacktool.Win32.NetFilter
4.0.3.1591

Bitdefender
Adware.BrowseFox.V
1.0.20.1220

Bkav FE
W32.HfsAdware
1.3.0.6379

Clam AntiVirus
Win.Adware.Netfilter-134
0.98/21511

Comodo Security
TrojWare.Win32.AltBrowse.IZZV
22429

Dr.Web
Trojan.Yontoo.1734
9.0.1.0244

Emsisoft Anti-Malware
Adware.BrowseFox.V
8.15.09.01.03

ESET NOD32
Win32/NetFilter.A potentially unsafe (variant)
9.11779

Fortinet FortiGate
Riskware/NetFilter
9/1/2015

F-Prot
W32/S-a7161e1c
v6.4.7.1.166

F-Secure
Adware.BrowseFox.V
11.2015-01-09_3

G Data
Adware.BrowseFox
15.9.25

herdProtect (fuzzy)
variant of {c5e48979-bd7f-4cf7-9b73-2482a67a4f37}w.sys (Adware)
2015.10.28.17

IKARUS anti.virus
AdWare.SwiftBrowse
t3scan.1.7.5.0

K7 AntiVirus
Unwanted-Program
13.205.16231

McAfee
Artemis!CEF02C1DC0A1
5600.6598

MicroWorld eScan
Adware.BrowseFox.V
16.0.0.732

NANO AntiVirus
Riskware.Win32.NetFilter.dgkdox
0.28.6.63726

nProtect
Adware.BrowseFox.V
15.06.12.01

Qihoo 360 Security
Win32/Virus.Adware.618
1.0.0.1015

Reason Heuristics
PUP.Yontoo.SteelCut (M)
15.9.1.15

Sophos
Generic PUA NM
4.98

Trend Micro House Call
Suspicious_GEN.F47V0825
7.2.244

Trend Micro
TROJ_GEN.R08NC0EEA15
10.465.01

Vba32 AntiVirus
AdWare.Win64.Yotoon
3.12.26.3

VIPRE Antivirus
Threat.4150696
35088

Zillya! Antivirus
Backdoor.CPEX.Win32.29350
2.0.0.1994

File size:
42.1 KB (43,144 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\{b0ead145-9535-4a5d-a554-40c27d154014}gw.sys

Digital Signature
Signed by:
Steel Cut

Authority:
VeriSign, Inc.

Valid from:
1/11/2015 3:00:00 AM

Valid to:
1/12/2016 2:59:59 AM

Subject:
CN=Steel Cut, O=Steel Cut, 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:
0ABB826DEFFE019B3B61D91322DE992A

File PE Metadata
Compilation timestamp:
5/3/2015 8:57:57 PM

OS version:
6.1

OS bitness:
Win32

Subsystem:
Native (none required)

Linker version:
9.0

CTPH (ssdeep):
768:pN0457WBZwpHs63E+X7BIrTsCEziDH+JgrVJddF+b:rhUcpH/0+LCf7EziDHhd2

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...
 
[+]

Entropy:
6.6141

Code size:
28 KB (28,672 bytes)

Driver
Display name:
{b0ead145-9535-4a5d-a554-40c27d154014}Gw

Type:
Kernel device driver (KernelDriver)

Group:
PNP_TDI


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