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{1b646e65-56b2-4543-b72c-0e8976cf559e}w64.sys

Cling Clang

Part of the Yontoo adware component, a web browser plugin that injects unwanted ads in the browser. The file {1b646e65-56b2-4543-b72c-0e8976cf559e}w64.sys by Cling Clang has been detected as adware by 28 anti-malware scanners. It runs as a Windows 64-bit kernel mode device driver named “{1b646e65-56b2-4543-b72c-0e8976cf559e}w64”. 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 Cling Clang)

Product:
StdLib

Version:
1.4.3.1 built by: WinDDK

MD5:
e3b1bb1314fc5dbe010aa83ba0903c36

SHA-1:
ed3fb78bc863807688b591e0b1899c66d769ae74

SHA-256:
5150148458560f49cc5d2b9b6c304898ecb59d068bc60f906469f065b3b76679

Scanner detections:
28 / 68

Status:
Adware

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

Analysis date:
4/26/2024 10:33:59 AM UTC  (today)

Scan engine
Detection
Engine version

Lavasoft Ad-Aware
Adware.NetFilter.E
360

Agnitum Outpost
Trojan.BPlug
7.1.1

AhnLab V3 Security
Trojan/Win64.SwiftBrowse
2015.05.29

avast!
Win32:BrowseFox-CV [PUP]
2014.9-160210

AVG
Cling
2017.0.2838

Baidu Antivirus
Adware.Win32.BrowseFox
4.0.3.16210

Bitdefender
Adware.NetFilter.E
1.0.20.205

Bkav FE
W64.HfsAdware
1.3.0.6379

Clam AntiVirus
Win.Adware.Swiftbrowse-75
0.98/21511

Dr.Web
Trojan.Yontoo.1816
9.0.1.041

Emsisoft Anti-Malware
Adware.NetFilter
8.16.02.10.01

F-Prot
W64/A-e967bae2
v6.4.7.1.166

F-Secure
Adware.NetFilter.E
11.2016-10-02_4

G Data
Adware.NetFilter
16.2.25

IKARUS anti.virus
AdWare.SpadeCast
t3scan.1.6.1.0

K7 AntiVirus
Riskware
13.204.16065

McAfee
Artemis!A7E9057E9977
5600.6494

MicroWorld eScan
Adware.NetFilter.E
17.0.0.123

nProtect
Adware.NetFilter.E
15.05.28.01

Panda Antivirus
Trj/CI.A
16.02.10.01

Reason Heuristics
PUP.Yontoo.ClingClang (M)
16.2.10.1

Sophos
BrowseSmart
4.98

SUPERAntiSpyware
Adware.NetFilter/Variant
9333

Trend Micro House Call
TROJ_SPNV.03J114
7.2.41

Trend Micro
TROJ_SPNV.03J114
10.465.10

VIPRE Antivirus
Trojan.Win32.Generic
40632

ViRobot
Trojan.Win32.S.Agent.61120.BN[h]
2014.3.20.0

Zillya! Antivirus
Adware.Yotoon.Win64.3
2.0.0.2193

File size:
59.7 KB (61,120 bytes)

Product version:
1.4.3.1

Copyright:
Copyright © 2013 StdLib

Original file name:
StdLib.sys

File type:
Driver (Win64 SYS)

Language:
English (United States)

Common path:
C:\Windows\System32\drivers\{1b646e65-56b2-4543-b72c-0e8976cf559e}w64.sys

Digital Signature
Signed by:
Cling Clang

Authority:
VeriSign, Inc.

Valid from:
10/6/2013 7:00:00 PM

Valid to:
10/7/2014 6:59:59 PM

Subject:
CN=Cling Clang, OU=Digital ID Class 3 - Microsoft Software Validation v2, O=Cling Clang, 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:
5D74FBB0061E5BD76029878075B12101

File PE Metadata
Compilation timestamp:
1/30/2014 6:45:30 PM

OS version:
6.1

OS bitness:
Win64

Subsystem:
Native (none required)

Linker version:
9.0

CTPH (ssdeep):
768:eot2dxF9O8ZF33iqiIy938bWp9XcfBvJkowidIPIU:e9JRicy938ip9ea1jr

Entry address:
0xF064

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, 2E, 20, FF, FF, CC, CC, 38, F2, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 1C, F6, 00, 00, 60, C1, 00, 00, 28, F1, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, BE, F9, 00, 00, 50, C0, 00, 00, D8, F0, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, B6, FA, 00, 00, 00, C0, 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, 9A, FA, 00, 00, 00, 00, 00, 00, 86, FA, 00, 00...
 
[+]

Entropy:
5.9626

Code size:
46.5 KB (47,616 bytes)

Driver
Display name:
{1b646e65-56b2-4543-b72c-0e8976cf559e}w64

Type:
Kernel device driver (KernelDriver)

Group:
PNP_TDI


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