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{56dd6fc4-41b2-4d71-93c2-5fcb8bd87ec8}gw64.sys

Krab Web

Part of the Yontoo adware component, a web browser plugin that injects unwanted ads in the browser. The file {56dd6fc4-41b2-4d71-93c2-5fcb8bd87ec8}gw64.sys by Krab Web has been detected as adware by 15 anti-malware scanners. It runs as a Windows 64-bit kernel mode device driver named “{56dd6fc4-41b2-4d71-93c2-5fcb8bd87ec8}Gw64”. 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 Krab Web)

Product:
StdLib

Version:
1.4.4.6 built by: WinDDK

MD5:
d2e492139e3fe9d5a336d4573d9d1592

SHA-1:
aa0b33044c6fa9c16ae83f6dc8ef709fc8946be0

SHA-256:
1769426e6bf89fe6e0e303b3e378157e9d7944394c86cd7d6b9d90e6c25f6ff0

Scanner detections:
15 / 68

Status:
Adware

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

Analysis date:
4/25/2024 10:52:45 AM UTC  (today)

Scan engine
Detection
Engine version

Lavasoft Ad-Aware
Adware.SwiftBrowse.CH
827

Agnitum Outpost
Riskware.Agent
7.1.1

AVG
Generic
2015.0.3305

Bitdefender
Adware.SwiftBrowse.CH
1.0.20.1515

Clam AntiVirus
Win.Adware.Swiftbrowse-497
0.98/21411

Dr.Web
hacktool program Tool.NetFilter.313
9.0.1.05190

Emsisoft Anti-Malware
Adware.SwiftBrowse.CH
8.14.10.30.07

ESET NOD32
Win64/BrowseFox.AU (variant)
8.10646

F-Prot
W64/A-89938c80
v6.4.7.1.166

F-Secure
Adware.SwiftBrowse.CH
11.2014-30-10_5

G Data
Adware.SwiftBrowse.CH
14.10.24

MicroWorld eScan
Adware.SwiftBrowse.CH
15.0.0.909

nProtect
Adware.SwiftBrowse.CH
14.10.30.01

Reason Heuristics
PUP.KrabWeb.n
14.10.29.21

VIPRE Antivirus
Threat.4150696
34232

File size:
47.6 KB (48,784 bytes)

Product version:
1.4.4.6

Copyright:
Copyright © 2013 StdLib

Original file name:
StdLib.sys

File type:
Driver (Win64 SYS)

Language:
English (United States)

Common path:
C:\Windows\System32\drivers\{56dd6fc4-41b2-4d71-93c2-5fcb8bd87ec8}gw64.sys

Digital Signature
Signed by:
Krab Web

Authority:
VeriSign, Inc.

Valid from:
10/6/2014 9:00:00 PM

Valid to:
10/7/2015 8:59:59 PM

Subject:
CN=Krab Web, O=Krab Web, L=Santa Monica, 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:
7267FFF9DE9B65FB24D2CA9CB6A3E8F9

File PE Metadata
Compilation timestamp:
9/22/2014 4:01:54 PM

OS version:
6.1

OS bitness:
Win64

Subsystem:
Native (none required)

Linker version:
9.0

CTPH (ssdeep):
768:l+7G2EjsnyXeOUEGG0LA8tWFZuL470h6aqxcCT2kvsVRwlZD34Mv:8FID6EGnLA8AFJTNEVmD42

Entry address:
0xC064

Entry point:
48, 83, EC, 28, 4C, 8B, C2, 4C, 8B, C9, E8, 95, FF, FF, FF, 49, 8B, D0, 49, 8B, C9, 48, 83, C4, 28, E9, E2, 50, FF, FF, CC, CC, 78, C2, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 54, C6, 00, 00, A0, 91, 00, 00, 28, C1, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, DA, CA, 00, 00, 50, 90, 00, 00, D8, C0, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, D2, CB, 00, 00, 00, 90, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, B6, CB, 00, 00, 00, 00, 00, 00, A2, CB, 00, 00...
 
[+]

Code size:
34.5 KB (35,328 bytes)

Driver
Display name:
{56dd6fc4-41b2-4d71-93c2-5fcb8bd87ec8}Gw64

Type:
Kernel device driver (KernelDriver)

Group:
PNP_TDI


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