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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. 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:
f2b480d4f2227f0738f6765fded66bc7

SHA-1:
40fc8aa5b938fee41f86499834195de75643d08c

SHA-256:
ebd1e1e5b725d1155b9ac2325fce7750911abf45fec8c1592180b6856c420110

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:
4/24/2024 4:56:54 PM UTC  (today)

Scan engine
Detection
Engine version

Reason Heuristics
PUP.Injekt.BigWaterApplications (M)
15.12.16.4

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 5:00:00 PM

Valid to:
4/22/2014 4:59:59 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 4:00:04 PM

OS version:
5.1

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
10.0

CTPH (ssdeep):
12288:4npNIoldAkQzJ9JePTgiqmKW8wYfkFHR7QcVGMp8c6Gh+CA1bGk45NdwvG8:4fg9Ur+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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