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regwhiz_installer.exe

Amptek Limited

The application regwhiz_installer.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 version of the installer will bundle the Ask.com Toolbar, a potentially unwanted web browser extension. The file has been seen being downloaded from improvespeedpc.s3.amazonaws.com and multiple other hosts.
Publisher:
Amptek Limited  (signed and verified)

MD5:
d194024aa2a73b1e8c3d198b96faf300

SHA-1:
e80dbdd288e1a157e9a03193209581ac1f79bd3f

SHA-256:
666ca08019917ed603cda08d07a8e2bdfb5c6a77fd2231cc8f3d141ad3e2b372

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:
4/25/2024 3:39:21 PM UTC  (today)

Scan engine
Detection
Engine version

Avira AntiVirus
Adware/RegRevive.C
7.11.136.204

Dr.Web
Adware.Downware.1417
9.0.1.0135

ESET NOD32
Win32/Bundled.Toolbar.Ask (variant)
8.9538

Fortinet FortiGate
Riskware/Bundled_Toolbar_Ask
5/15/2014

Malwarebytes
PUP.Optional.Spigot.A
v2014.05.15.08

NANO AntiVirus
Trojan.Win32.Downware.csnyid
0.28.0.58394

Reason Heuristics
PUP.AmptekLimited.R
14.11.21.23

File size:
555.9 KB (569,208 bytes)

File type:
Executable application (Win32 EXE)

Installer:
NSIS (Nullsoft Scriptable Install System)

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

Digital Signature
Signed by:
Amptek Limited

Authority:
VeriSign, Inc.

Valid from:
6/7/2012 4:30:00 AM

Valid to:
10/13/2013 3:29:59 AM

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:
12/6/2009 2:20:41 AM

OS version:
4.0

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
6.0

CTPH (ssdeep):
12288:zESOptcOTfZFfKGgq0RN9lAX+uylJQO7OiUL3:zEWEBFfdQlAXIsiK

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:
7.4772

Packer / compiler:
Nullsoft install system v2.x

Code size:
22.5 KB (23,040 bytes)

The file regwhiz_installer.exe has been seen being distributed by the following 2 URLs.

http://improvespeedpc.s3.amazonaws.com/Regwhiz.exe

http://regwhiz.s3.amazonaws.com/Regwhiz_Installer.exe

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