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{910baceb-efc0-4fe2-bc67-ee485894a7c4}w.sys

Lemurleap

Part of the Yontoo adware component, a web browser plugin that injects unwanted ads in the browser. The file {910baceb-efc0-4fe2-bc67-ee485894a7c4}w.sys by Lemurleap has been detected as adware by 26 anti-malware scanners. It runs as a Windows kernel mode device driver named “{910baceb-efc0-4fe2-bc67-ee485894a7c4}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 Lemurleap)

Product:
StdLib

Version:
1.4.4.6 built by: WinDDK

MD5:
db13722d00c49ccff125b6553a2150f5

SHA-1:
0c11b3c89ad3a88831afee4008ba1d65fb52500e

SHA-256:
cd5c1feacd1f65d65838d18b2778ebb96c80c2e93296d0d06ee25ad596e28e20

Scanner detections:
26 / 68

Status:
Adware

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

Analysis date:
4/19/2024 9:02:21 AM UTC  (today)

Scan engine
Detection
Engine version

Lavasoft Ad-Aware
Adware.BrowseFox.V
355

Agnitum Outpost
PUA.BrowseFox
7.1.1

AhnLab V3 Security
Win-PUP/BrowseFox.Gen
2015.04.22

Avira AntiVirus
ADWARE/BrowseFox.A.1227
3.6.1.96

avast!
Win32:BrowseFox-HP [PUP]
2014.9-160215

AVG
Lemurleap
2017.0.2833

Baidu Antivirus
Adware.Win32.BrowseFox
4.0.3.16215

Bitdefender
Adware.BrowseFox.V
1.0.20.230

Bkav FE
W32.HfsAdware
1.3.0.6379

Clam AntiVirus
Win.Adware.Netfilter-134
0.98/20451

Comodo Security
TrojWare.Win32.AltBrowse.IZZV
21848

Dr.Web
Trojan.Yontoo.1734
9.0.1.046

Emsisoft Anti-Malware
Adware.BrowseFox.V
8.16.02.15.03

F-Prot
W32/S-a7161e1c
v6.4.7.1.166

F-Secure
Adware.BrowseFox.V
11.2016-15-02_2

G Data
Adware.BrowseFox
16.2.25

K7 AntiVirus
Unwanted-Program
13.203.15663

MicroWorld eScan
Adware.BrowseFox.V
17.0.0.138

NANO AntiVirus
Riskware.Win32.NetFilter.dgkdox
0.30.0.64448

Norman
Adware.BrowseFox.V
11.20160215

nProtect
Adware.BrowseFox.V
15.04.20.01

Qihoo 360 Security
Win32/Virus.Adware.618
1.0.0.1015

Reason Heuristics
PUP.Yontoo.Lemurleap (M)
16.2.15.3

Vba32 AntiVirus
AdWare.Zaitu
3.12.26.3

VIPRE Antivirus
Threat.4741131
39354

Zillya! Antivirus
Backdoor.CPEX.Win32.29350
2.0.0.2146

File size:
41.8 KB (42,776 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\{910baceb-efc0-4fe2-bc67-ee485894a7c4}w.sys

Digital Signature
Signed by:
Lemurleap

Authority:
COMODO CA Limited

Valid from:
5/7/2014 7:00:00 AM

Valid to:
5/8/2015 6:59:59 AM

Subject:
CN=Lemurleap, O=Lemurleap, STREET=10620 Treena Street Suite 230, L=San Diego, S=Ca, PostalCode=92131, C=US

Issuer:
CN=COMODO Code Signing CA 2, O=COMODO CA Limited, L=Salford, S=Greater Manchester, C=GB

Serial number:
015F3E368C995EC152965B1AABC50D9E

File PE Metadata
Compilation timestamp:
2/10/2015 10:27:59 AM

OS version:
6.1

OS bitness:
Win32

Subsystem:
Native (none required)

Linker version:
9.0

CTPH (ssdeep):
768:nN0457WBZwpHs63E+X7BIrTsCEziDH+JgrVJdds+7l/9:NhUcpH/0+LCf7EziDHhdf7R9

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:
6.6036

Code size:
28 KB (28,672 bytes)

Driver
Display name:
{910baceb-efc0-4fe2-bc67-ee485894a7c4}w

Type:
Kernel device driver (KernelDriver)

Group:
PNP_TDI


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