wildwestuninstaller.exe

Wild West

Part of the Yontoo adware component, a web browser plugin that injects unwanted ads in the browser. The application wildwestuninstaller.exe by Wild West has been detected as adware by 1 anti-malware scanner with very strong indications that the file is a potential threat. It is also typically executed from an Internet Explorer cache folder. The file has been seen being downloaded from install.mywildwestapp.com.
Publisher:
Wild West  (signed and verified)

Version:
1.0.0.0

MD5:
4903d685fa9d6c3f5620fbd0dd8ce036

SHA-1:
666f3f0c9f651decd13a4c5f9b711def906f4fc2

SHA-256:
9e7c89509978a40c1270353632e48fc5f166a6d5ea95d704f98dbee05b3884e7

Scanner detections:
1 / 68

Status:
Adware

Explanation:
Belongs to the Sambreel/Yontoo progam that inserts various forms of advertising in the user's web browser, installed with minimal or no user consent.

Analysis date:
5/12/2024 5:38:15 AM UTC  (today)

Scan engine
Detection
Engine version

Reason Heuristics
PUP.Yontoo.WildWest (M)
16.2.20.21

File size:
563.2 KB (576,752 bytes)

Product version:
1.0.0.0

Original file name:
Wild West Uninstaller.exe

File type:
Executable application (Win32 EXE)

Language:
Language Neutral

Common path:
C:\users\{user}\appdata\local\microsoft\windows\temporary internet files\content.ie5\{random}\wildwestuninstaller.exe

Digital Signature
Signed by:

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:
9/25/2015 1:46:42 PM

OS version:
4.0

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
11.0

.NET CLR dependent:
Yes

CTPH (ssdeep):
12288:lU5zPl7/a4V+KE6yRDvKSaoDJ+VhQr5z6L4:/K4KOghQr5z6L4

Entry address:
0x8AC9E

Entry point:
FF, 25, 00, 20, 40, 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, 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, 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, 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, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00...
 
[+]

Entropy:
6.0881

Developed / compiled with:
Microsoft Visual C# / Basic .NET

Code size:
547.5 KB (560,640 bytes)

The file wildwestuninstaller.exe has been seen being distributed by the following URL.

Remove wildwestuninstaller.exe - Powered by Reason Core Security