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util_ex.dll

Big Water Applications, LLC

This is part of an adware program designed to inject advertising in the web browser (banners, text-links) as well as modify the normal behavior of the browser as well as modify the computer’s system settings that control applications to run on startup. Part of the Injekt brand of unwanted programs. The module util_ex.dll by Big Water Applications 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 the user's temporary directory.
Publisher:
Big Water Applications, LLC  (signed and verified)

MD5:
5cff93d19c103750280547f747e4bed7

SHA-1:
7abe4b0cd5086331ed6f22ece78fd7f2d14f6ea6

SHA-256:
2c28754b4833c96a8c94e4fd55f3c187bf446b8034df5e847cf210c5ddd79009

Scanner detections:
1 / 68

Status:
Adware

Explanation:
Injects display ads (banner ads), in-text ads, interstitial ads, or other types of ads in the web browser as well as alters the browsers settings (home page, search, DNS, and security protocols).

Analysis date:
12/25/2024 1:09:44 AM UTC  (today)

Scan engine
Detection
Engine version

Reason Heuristics
PUP.Injekt (M)
16.11.23.10

File size:
776.6 KB (795,240 bytes)

File type:
Dynamic link library (Win32 DLL)

Common path:
C:\users\{user}\appdata\local\temp\{random}.tmp\util_ex.dll

Digital Signature
Signed by:
Big Water Applications, LLC

Authority:
COMODO CA Limited

Valid from:
4/21/2013 7:00:00 PM

Valid to:
4/22/2014 6:59:59 PM

Subject:
CN="Big Water Applications, LLC", O="Big Water Applications, LLC", STREET=640 Grand Ave, STREET=Suite E, L=Carlsbad, S=CA, PostalCode=92008, C=US

Issuer:
CN=COMODO Code Signing CA 2, O=COMODO CA Limited, L=Salford, S=Greater Manchester, C=GB

Serial number:
0088DD6A4DF46D819C84B9E99D7A0530C5

File PE Metadata
Compilation timestamp:
7/29/2013 6:00:04 PM

OS version:
5.1

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
10.0

CTPH (ssdeep):
12288:JnpNIoldAkQzJ9JePTgiqmKW8wYfkFHR7QcVGMp8c6Gh+CA1bGk45NdwvG8:Jfg9Ur+Wuc54MJ4CKGkgc

Entry address:
0x8EA27

Entry point:
8B, FF, 55, 8B, EC, 83, 7D, 0C, 01, 75, 05, E8, 05, B0, 00, 00, FF, 75, 08, 8B, 4D, 10, 8B, 55, 0C, E8, EC, FE, FF, FF, 59, 5D, C2, 0C, 00, CC, CC, CC, CC, CC, CC, 8B, 54, 24, 0C, 8B, 4C, 24, 04, 85, D2, 74, 69, 33, C0, 8A, 44, 24, 08, 84, C0, 75, 16, 81, FA, 80, 00, 00, 00, 72, 0E, 83, 3D, E0, CF, 0B, 10, 00, 74, 05, E9, 5B, B0, 00, 00, 57, 8B, F9, 83, FA, 04, 72, 31, F7, D9, 83, E1, 03, 74, 0C, 2B, D1, 88, 07, 83, C7, 01, 83, E9, 01, 75, F6, 8B, C8, C1, E0, 08, 03, C1, 8B, C8, C1, E0, 10, 03, C1, 8B, CA...
 
[+]

Entropy:
6.7526

Code size:
658 KB (673,792 bytes)

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