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utilokiitan.exe

Okiitan

Part of the Yontoo adware component, a web browser plugin that injects unwanted ads in the browser. The application utilokiitan.exe by Okiitan has been detected as adware by 1 anti-malware scanner with very strong indications that the file is a potential threat. It runs as a separate (within the context of its own process) windows Service named “Util Okiitan”.
Publisher:
Okiitan  (signed and verified)

Version:
1.0.5391.15151

MD5:
513cac504518f19e363fd765430534f1

SHA-1:
81818ce476ecc30c6ba8a447c45ccdb994bd43fb

SHA-256:
7959a6adc9051e0f093d1159a32b11558f8c30c24bf5ef5da7f460bc819871cb

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:
2/25/2025 12:15:45 AM UTC  (today)

Scan engine
Detection
Engine version

Reason Heuristics
PUP.Yontoo (M)
17.3.14.15

File size:
510.3 KB (522,520 bytes)

Product version:
1.0.5391.15151

Original file name:
Okiitan.exe

File type:
Executable application (Win32 EXE)

Language:
Language Neutral

Common path:
C:\Program Files\okiitan\bin\utilokiitan.exe

Digital Signature
Signed by:
Okiitan

Authority:
VeriSign, Inc.

Valid from:
2/4/2014 5:30:00 AM

Valid to:
2/5/2015 5:29:59 AM

Subject:
CN=Okiitan, OU=Digital ID Class 3 - Microsoft Software Validation v2, O=Okiitan, 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:
72D4F4A7BAF3F88B2B0D2403A4F6CFDB

File PE Metadata
Compilation timestamp:
10/5/2014 9:55:07 PM

OS version:
4.0

OS bitness:
Win32

Subsystem:
Windows Console

Linker version:
6.0

.NET CLR dependent:
Yes

Entry address:
0x7F3E2

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, 02, 00, 00, 00, 5A, 00, 00, 00, 24, F4, 07, 00, 24, D6, 07, 00, 52, 53, 44, 53, 64, D2, A8, C1, 65, C6, 7E, 48, BD, 0E, F5, 6E, 58, 7F, B3, 9D, 01, 00, 00, 00, 44, 3A, 5C, 55, 74, 69, 6C, 69, 74, 69, 65, 73, 5C, 68, 6B, 66, 66, 31, 33, 63, 69, 2E, 67, 61, 65, 5C, 44, 65, 73, 6B, 74, 6F, 70, 5C, 44, 65, 73, 6B...
 
[+]

Entropy:
5.9243

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

Code size:
501.5 KB (513,536 bytes)

Service
Display name:
Util Okiitan

Type:
Win32OwnProcess


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