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cytiwebuninstaller.exe

Cyti Web

Part of the Yontoo adware component, a web browser plugin that injects unwanted ads in the browser. The application cytiwebuninstaller.exe by Cyti Web has been detected as adware by 1 anti-malware scanner with very strong indications that the file is a potential threat. The file has been seen being downloaded from install.cytiweb.net.
Publisher:
Cyti Web  (signed and verified)

Version:
1.0.0.0

MD5:
983cff478026f9e835501b20fa4a9cc2

SHA-1:
d91542480dae066037cd14bb0f6e474b8a78105e

SHA-256:
70fbe1d95d0c1c8bacee15528c09e1d50cfb8c2a2a5b5e3a7153dc9036e3f3a4

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:
6/1/2024 10:22:47 AM UTC  (today)

Scan engine
Detection
Engine version

Reason Heuristics
PUP.Yontoo.CytiWeb (M)
16.1.23.20

File size:
542.2 KB (555,248 bytes)

Product version:
1.0.0.0

Original file name:
Cyti Web Uninstaller.exe

File type:
Executable application (Win32 EXE)

Language:
Language Neutral

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

Digital Signature
Signed by:
Cyti Web

Authority:
VeriSign, Inc.

Valid from:
11/19/2014 8:00:00 AM

Valid to:
11/20/2015 7:59:59 AM

Subject:
CN=Cyti Web, O=Cyti Web, L=Santa Monica, 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:
2EA907673DCE80C1AF3DAA010B4C3CA9

File PE Metadata
Compilation timestamp:
1/20/2015 6:27:49 PM

OS version:
4.0

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
8.0

.NET CLR dependent:
Yes

CTPH (ssdeep):
12288:bPzDqjYhagORJt+PAC190aztFvV9pghrvAhnu:/u8Ym7pgh7unu

Entry address:
0x858A2

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:
6.1369

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

Code size:
526.5 KB (539,136 bytes)

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

http://install.cytiweb.net/ud

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