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dllhelper.exe

Amptek Limited

The application dllhelper.exe by Amptek Limited has been detected as adware by 7 anti-malware scanners. The program is a setup application that uses the NSIS (Nullsoft Scriptable Install System) installer. This file is typically installed with the program DLL Opener which is a potentially unwanted software program. This version of the installer will bundle the Ask.com Toolbar, a potentially unwanted web browser extension. The file has been seen being downloaded from filesolver.s3.amazonaws.com.
Publisher:
Amptek Limited  (signed and verified)

MD5:
4a0897f029ac11dbf1da2a13da9a78b8

SHA-1:
835a1fdad12545d7ef060686b3c1141324c48721

SHA-256:
eda162632f4411a7ec75093267b861fb8554a6cc78a5737ea28ba500ad42151c

Scanner detections:
7 / 68

Status:
Adware

Explanation:
Bundles that Ask.com toolbar as a third-party offer, a web browser extension that may modify a user's search and home pages.

Analysis date:
12/28/2024 6:36:32 AM UTC  (today)

Scan engine
Detection
Engine version

Avira AntiVirus
Adware/RegRevive.B
7.11.108.192

Dr.Web
Adware.Downware.1417
9.0.1.0109

ESET NOD32
Win32/Bundled.Toolbar.Ask (variant)
8.9015

Malwarebytes
PUP.Optional.Spigot.A
v2014.04.19.08

McAfee
Artemis!43653297B944
5600.7076

Reason Heuristics
PUP.AmptekLimited.G
14.11.21.23

Trend Micro House Call
TROJ_GEN.F47V1008
7.2.109

File size:
1.1 MB (1,109,096 bytes)

File type:
Executable application (Win32 EXE)

Installer:
NSIS (Nullsoft Scriptable Install System)

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

Digital Signature
Signed by:
Amptek Limited

Authority:
VeriSign, Inc.

Valid from:
6/6/2012 8:00:00 PM

Valid to:
10/12/2013 7:59:59 PM

Subject:
CN=Amptek Limited, OU=Digital ID Class 3 - Microsoft Software Validation v2, O=Amptek Limited, L=Hong Kong, S=Hong Kong, C=HK

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:
55B30AAE501ADA359698E3025A847E57

File PE Metadata
Compilation timestamp:
12/5/2009 5:50:41 PM

OS version:
4.0

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
6.0

CTPH (ssdeep):
24576:DQzE69R7tsjfp3vk+KK6E9nSek3iyG69dx18af9sJRH:kAgG3vk7E9mShsdFWRH

Entry address:
0x30CB

Entry point:
81, EC, 80, 01, 00, 00, 53, 55, 56, 33, DB, 57, 89, 5C, 24, 18, C7, 44, 24, 10, 60, 91, 40, 00, 33, F6, C6, 44, 24, 14, 20, FF, 15, 30, 70, 40, 00, 68, 01, 80, 00, 00, FF, 15, B0, 70, 40, 00, 53, FF, 15, 7C, 72, 40, 00, 6A, 08, A3, 38, 3F, 42, 00, E8, F1, 2B, 00, 00, A3, 84, 3E, 42, 00, 53, 8D, 44, 24, 34, 68, 60, 01, 00, 00, 50, 53, 68, 30, F4, 41, 00, FF, 15, 58, 71, 40, 00, 68, 54, 91, 40, 00, 68, 80, 36, 42, 00, E8, A4, 28, 00, 00, FF, 15, AC, 70, 40, 00, BF, 00, 90, 42, 00, 50, 57, E8, 92, 28, 00, 00...
 
[+]

Entropy:
7.9184

Packer / compiler:
Nullsoft install system v2.x

Code size:
22.5 KB (23,040 bytes)

The file dllhelper.exe has been discovered within the following program.

DLL Opener
DLL Opener is a bundled installation using a download monetization platform. Installing the co-bundled software through the modified installer may not be optional.
www.dllopener.com
70% remove it
 
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The file dllhelper.exe has been seen being distributed by the following URL.

http://filesolver.s3.amazonaws.com/DLLHelper.exe

Remove dllhelper.exe - Powered by Reason Core Security
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