skype_setup.exe

Optimum Installer

This adware bundler is distributed through Adknowledge's advertising supported software managers. The application skype_setup.exe, “Setup ” by Optimum 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. The file has been seen being downloaded from install.optimuminstaller.com.
Publisher:
OptimumInstaller  (signed by Optimum Installer)

Product:
OptimumInstaller

Description:
Setup

Version:
2.0.15

MD5:
603105dbf7082600662c66355f8aae17

SHA-1:
8088eb57b64102d74905afbea529645c812dc6fb

SHA-256:
6b4fae32fe740e78ee1dff2354140986080684d1aecab4a3a0e60a6042fc74d6

Scanner detections:
1 / 68

Status:
Adware

Explanation:
This installer bundles various adware prorgams that may include toolbars and web browser advertising injectors/extensions.

Description:
This is also known as bundleware, or downloadware, which is an downloader designed to simply deliver ad-supported offers in the setup routine of an otherwise legitimate software.

Analysis date:
11/23/2024 9:42:51 AM UTC  (today)

Scan engine
Detection
Engine version

Reason Heuristics
PUP.Adknowledge.OptimumI.Bundler (M)
16.4.5.23

File size:
664.1 KB (680,032 bytes)

Product version:
2.0.15

Original file name:
Setup.exe

File type:
Executable application (Win32 EXE)

Bundler/Installer:
Adknowledge Fusion

Language:
English (United States)

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

Digital Signature
Authority:
VeriSign, Inc.

Valid from:
11/7/2011 7:00:00 PM

Valid to:
11/7/2012 6:59:59 PM

Subject:
CN=Optimum Installer, OU=Digital ID Class 3 - Microsoft Software Validation v2, O=Optimum Installer, L=Kansas City, S=Missouri, 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:
0809956535A889F9931BDEF10FF6814A

File PE Metadata
Compilation timestamp:
9/28/2012 10:25:36 AM

OS version:
5.0

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
9.0

CTPH (ssdeep):
12288:V8r5bSC2N1h3Zxj7L7JYBuFi/Cxt/46IFElel4I44KiHMTSpuB:V8kN1h3Zxj73JYBuFi4d46gn4NiHiB

Entry address:
0x5A35F

Entry point:
E8, 53, F1, 00, 00, E9, 78, FE, FF, FF, 8B, FF, 55, 8B, EC, 83, EC, 10, 8B, 4D, 08, 53, 8B, 5D, 0C, 56, 57, 33, FF, 89, 4D, F8, 89, 5D, FC, 39, 7D, 10, 74, 21, 39, 7D, 14, 74, 1C, 3B, CF, 75, 1F, E8, 59, 0B, 00, 00, 57, 57, 57, 57, C7, 00, 16, 00, 00, 00, 57, E8, 3D, D2, FF, FF, 83, C4, 14, 33, C0, 5F, 5E, 5B, C9, C3, 8B, 75, 18, 3B, F7, 74, 0D, 83, C8, FF, 33, D2, F7, 75, 10, 39, 45, 14, 76, 21, 83, FB, FF, 74, 0B, 53, 57, 51, E8, F0, CA, FF, FF, 83, C4, 0C, 3B, F7, 74, B9, 83, C8, FF, 33, D2, F7, 75, 10...
 
[+]

Entropy:
6.4710

Code size:
484 KB (495,616 bytes)

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

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