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wildwest.dll

Wild West

Part of the Yontoo adware component, a web browser plugin that injects unwanted ads in the browser. The module wildwest.dll by Wild West has been detected as adware by 30 anti-malware scanners. 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. The file has been seen being downloaded from install-cdn.mywildwestapp.com.
Publisher:
Wild West  (signed and verified)

Product:
Wild West

Version:
1.0.0.7

MD5:
a57e3f3091abb1645468435401496e15

SHA-1:
754f4ba006c4ce903917ce61ba15c87f0f365d17

SHA-256:
e2bfc13fb029c660e1c9e67f7e68f9cf39d951fcf9eb417143179f0a4ea2c5d7

Scanner detections:
30 / 68

Status:
Adware

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

Analysis date:
12/26/2024 5:32:13 PM UTC  (today)

Scan engine
Detection
Engine version

Lavasoft Ad-Aware
Gen:Variant.Adware.Mikey.11547
379

Agnitum Outpost
Riskware.Agent
7.1.1

AhnLab V3 Security
PUP/Win32.BrowseFox
2015.04.27

Avira AntiVirus
ADWARE/BrowseFox.Gen2
7.11.214.232

AVG
Adware AdPlugin
2017.0.2857

Baidu Antivirus
Adware.Win32.BrowseFox
4.0.3.16121

Bitdefender
Gen:Variant.Mikey.11547
1.0.20.105

Bkav FE
W32.HfsAdware
1.3.0.6379

Dr.Web
Trojan.Yontoo.1734
9.0.1.021

Emsisoft Anti-Malware
Gen:Variant.Adware.Mikey.11547
8.16.01.21.09

ESET NOD32
Win32/BrowseFox.AE potentially unwanted application
10.7.0.302.0

Fortinet FortiGate
Riskware/BrowseFox
1/21/2016

F-Prot
W32/S-f64f6ec1
v6.4.7.1.166

F-Secure
Gen:Variant.Adware.Mikey
11.2016-21-01_5

G Data
Gen:Variant.Mikey.11547
16.1.25

IKARUS anti.virus
PUA.BrowseFox
t3scan.1.8.9.0

K7 AntiVirus
Trojan
13.202.15408

Malwarebytes
PUP.Optional.WildWest.A
v2016.01.21.09

McAfee
Artemis!3EF9508F3295
5600.6513

MicroWorld eScan
Gen:Variant.Adware.Mikey.11547
17.0.0.63

NANO AntiVirus
Trojan.Win32.Yontoo.dnkubo
0.30.8.659

Qihoo 360 Security
HEUR/QVM30.1.Malware.Gen
1.0.0.1015

Reason Heuristics
PUP.Yontoo.WildWest (M)
16.1.21.21

Rising Antivirus
PE:Adware.BrowseFox!6.1D8B
23.00.65.16119

Sophos
Generic PUA HH
4.98

SUPERAntiSpyware
Adware.MSIL/Variant
9371

Trend Micro House Call
TROJ_GEN.R047C0OCM15
7.2.21

Trend Micro
TROJ_GEN.R047C0OCM15
10.465.21

Vba32 AntiVirus
AdWare.MSIL.Agent
3.12.26.3

VIPRE Antivirus
Yontoo
38840

File size:
262.7 KB (269,040 bytes)

Product version:
1.0.0.7

Copyright:
(c) Wild West. All rights reserved.

File type:
Dynamic link library (Win32 DLL)

Language:
English (United States)

Common path:
C:\users\{user}\appdata\local\microsoft\windows\inetcache\ie\{random}\wildwest.dll

Digital Signature
Signed by:
Wild West

Authority:
VeriSign, Inc.

Valid from:
1/11/2015 7:00:00 AM

Valid to:
1/12/2016 6:59:59 AM

Subject:
CN=Wild West, O=Wild West, 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:
496B67C883386C82B7E6FF63CEFE1466

File PE Metadata
Compilation timestamp:
3/12/2015 6:35:04 AM

OS version:
6.0

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
11.0

CTPH (ssdeep):
3072:u2CYU/9J7yX8LVxQbqHVOhB+PVG63Qv+8e2mZKTgRUg/MsCRmcEX:u2CYUf+sLVW4VOy+vTmZx2fc

Entry address:
0xF515

Entry point:
55, 8B, EC, 83, 7D, 0C, 01, 75, 05, E8, EA, 7E, 00, 00, FF, 75, 10, FF, 75, 0C, FF, 75, 08, E8, 07, 00, 00, 00, 83, C4, 0C, 5D, C2, 0C, 00, 6A, 0C, 68, B8, 21, 03, 10, E8, 4C, 02, 00, 00, 33, C0, 40, 8B, 75, 0C, 85, F6, 75, 0C, 39, 35, 0C, 77, 03, 10, 0F, 84, E4, 00, 00, 00, 83, 65, FC, 00, 83, FE, 01, 74, 05, 83, FE, 02, 75, 35, 8B, 0D, C4, 93, 02, 10, 85, C9, 74, 0C, FF, 75, 10, 56, FF, 75, 08, FF, D1, 89, 45, E4, 85, C0, 0F, 84, B1, 00, 00, 00, FF, 75, 10, 56, FF, 75, 08, E8, 11, FE, FF, FF, 89, 45, E4...
 
[+]

Entropy:
6.0708

Developed / compiled with:
Microsoft Visual C++

Code size:
159 KB (162,816 bytes)

The file wildwest.dll has been seen being distributed by the following URL.

http://install-cdn.mywildwestapp.com/bed?r=2015031209&bet=3

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