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skype_setup.exe

Premium Installer

This adware bundler is distributed through Adknowledge's advertising supported software managers. The application skype_setup.exe by Premium Installer has been detected as adware by 1 anti-malware scanner with very strong indications that the file is a potential threat. The program is a setup application that uses the Adknowledge Fusion installer. It is also typically executed from an Internet Explorer cache folder. The file has been seen being downloaded from secure.pn-installer1.com.
Publisher:
ExpressInstaller  (signed by Premium Installer)

Product:
ExpressInstaller

Version:
3, 7, 1, 0

MD5:
283042847221cd462fb2de64c51e9ba9

SHA-1:
660100d759c1f97c366be8b57e7e5d6b3c1d3303

SHA-256:
35580bf6f72a38987f0a9ea1e885dfc38eefd635fcb608508ee28426385b48c9

Scanner detections:
1 / 68

Status:
Adware

Explanation:
This setup/installer bundles various adware components.

Description:
This 'download manager' is also considered bundleware, a utility designed to download software (possibly legitimate or opensource) and bundle it with a number of optional offers including ad-supported utilities, toolbars, shopping comparison tools and browser extensions.

Analysis date:
12/25/2024 1:48:50 AM UTC  (today)

Scan engine
Detection
Engine version

Reason Heuristics
PUP.Adknowledge.PremiumI.Bundler (M)
16.5.5.17

File size:
1.7 MB (1,762,968 bytes)

Product version:
3, 7, 1, 0

Copyright:
Copyright (C) 2013 ExpressInstaller

File type:
Executable application (Win32 EXE)

Bundler/Installer:
Adknowledge Fusion

Language:
English (United States)

Common path:
C:\users\{user}\appdata\local\microsoft\windows\temporary internet files\content.ie5\{random}\skype_setup.exe

Digital Signature
Signed by:
Premium Installer

Authority:
VeriSign, Inc.

Valid from:
7/13/2013 5:30:00 AM

Valid to:
8/3/2014 5:29:59 AM

Subject:
CN=Premium Installer, OU=Digital ID Class 3 - Microsoft Software Validation v2, O=Premium Installer, L=Wilmington, S=Delaware, 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:
35BB74B905C01CE61DA131BA49337F33

File PE Metadata
Compilation timestamp:
9/30/2013 7:11:41 PM

OS version:
5.0

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
9.0

CTPH (ssdeep):
49152:+Brge5c+LNeQdJhjggAX/mGRo4K/1d3AJss/m:mgn+LIQ9fAX/W/1NAJ9O

Entry address:
0x403C

Entry point:
E8, FB, 35, 00, 00, E9, 78, FE, FF, FF, 8B, FF, 55, 8B, EC, 83, EC, 20, 8B, 45, 08, 56, 57, 6A, 08, 59, BE, 5C, C2, 41, 00, 8D, 7D, E0, F3, A5, 89, 45, F8, 8B, 45, 0C, 5F, 89, 45, FC, 5E, 85, C0, 74, 0C, F6, 00, 08, 74, 07, C7, 45, F4, 00, 40, 99, 01, 8D, 45, F4, 50, FF, 75, F0, FF, 75, E4, FF, 75, E0, FF, 15, 44, C0, 41, 00, C9, C2, 08, 00, 8B, FF, 55, 8B, EC, 51, 53, 8B, 45, 0C, 83, C0, 0C, 89, 45, FC, 64, 8B, 1D, 00, 00, 00, 00, 8B, 03, 64, A3, 00, 00, 00, 00, 8B, 45, 08, 8B, 5D, 0C, 8B, 6D, FC, 8B, 63...
 
[+]

Entropy:
7.2147

Code size:
104.5 KB (107,008 bytes)

The file skype_setup.exe has been seen being distributed by the following URL.

http://secure.pn-installer1.com/201309301750/bdb202354c26e39f21aa490caaa6603b/.../Skype_Setup.exe

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