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steelcutuninstaller.exe

Steel Cut

This is the installer/setup program for a Yontoo adware component, a web browser plugin that injects unwanted ads in the browser. The application steelcutuninstaller.exe by Steel Cut has been detected as adware by 1 anti-malware scanner with very strong indications that the file is a potential threat. This is a self-extracting archive and installer and has been known to bundle potentially unwanted software. The file has been seen being downloaded from install.mysteelcut.com.
Publisher:
Steel Cut  (signed and verified)

Version:
1.0.0.0

MD5:
d6a4be918888bde2deb1620d16312ecf

SHA-1:
59f123e7545fcece85e6085dfdc06d2da91f953d

SHA-256:
efda27a73fe7ee32d8a3cbfb9399dee5368b3499410a013446dc5e6bc648a885

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:
12/26/2024 5:30:09 PM UTC  (today)

Scan engine
Detection
Engine version

Reason Heuristics
PUP.Yontoo.SteelCut.Installer (M)
16.6.17.9

File size:
552.7 KB (566,000 bytes)

Product version:
1.0.0.0

Original file name:
Steel Cut Uninstaller.exe

File type:
Executable application (Win32 EXE)

Common path:
C:\users\{user}\downloads\steelcutuninstaller.exe

Digital Signature
Signed by:
Steel Cut

Authority:
VeriSign, Inc.

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

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

Subject:
CN=Steel Cut, O=Steel Cut, 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:
0ABB826DEFFE019B3B61D91322DE992A

File PE Metadata
Compilation timestamp:
6/28/2015 8:41:41 AM

OS version:
4.0

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
11.0

.NET CLR dependent:
Yes

CTPH (ssdeep):
12288:Q83ZW51Z2wV0VdtpBQb1EUEDJ+VlQr5nzOC:7VG1OglQr5nzOC

Entry address:
0x8831E

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...
 
[+]

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

Code size:
537 KB (549,888 bytes)

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

http://install.mysteelcut.com/ud

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