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utilmaucampo.exe

maucampo

Part of the Yontoo adware component, a web browser plugin that injects unwanted ads in the browser. The application utilmaucampo.exe by maucampo has been detected as adware by 5 anti-malware scanners. It runs as a separate (within the context of its own process) windows Service named “Update maucampo”. 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.
Publisher:
maucampo  (signed and verified)

Version:
1.0.5123.12774

MD5:
ba5e3102e26fa2a1c06483da9bcad184

SHA-1:
d2f2ce36f7cf586d57f6b97069f73263d0378ebb

SHA-256:
90861ddaab3c0913c4ae05ff92ce7bca77b06296765fdd6d9c1a27609525922c

Scanner detections:
5 / 68

Status:
Adware

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

Analysis date:
7/12/2025 8:24:12 AM UTC  (today)

Scan engine
Detection
Engine version

Dr.Web
Trojan.BPlug.9
9.0.1.015

ESET NOD32
Win32/BrowseFox (variant)
8.9326

Fortinet FortiGate
Riskware/BrowseFox
1/23/2014

Reason Heuristics
PUP.Service.maucampo.M
14.8.8.0

Trend Micro House Call
TROJ_GEN.F47V0114
7.2.23

File size:
94.8 KB (97,048 bytes)

Product version:
1.0.5123.12774

Original file name:
maucampo.exe

File type:
Executable application (Win32 EXE)

Common path:
C:\Program Files\maucampo\bin\utilmaucampo.exe

Digital Signature
Signed by:
maucampo

Authority:
VeriSign, Inc.

Valid from:
11/27/2013 1:00:00 AM

Valid to:
11/28/2014 12:59:59 AM

Subject:
CN=maucampo, OU=Digital ID Class 3 - Microsoft Software Validation v2, O=maucampo, 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:
40BF170484E09DB904849DB86C86A494

File PE Metadata
Compilation timestamp:
1/10/2014 8:06:01 AM

OS version:
4.0

OS bitness:
Win32

Subsystem:
Windows Console

Linker version:
8.0

.NET CLR dependent:
Yes

CTPH (ssdeep):
1536:iPJanaxnpQ5o7qSKGdR/o9JQy5i+ctONOiV9mh2FWLhIBJhBnQbb0qHmKA6em5:iPJ1xn65cZdR/WrinOsiAshBngbZXA6D

Entry address:
0x1776A

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:
86 KB (88,064 bytes)

Service
Display name:
Update maucampo

Type:
Win32OwnProcess


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