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skypesetup.exe

CLICK TO START

This is the OutBrowse Revenyou installer which bundles offers for additional third party applications that may be unwanted and installed without consent. The application skypesetup.exe by CLICK TO START 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 OutBrowse Revenyou installer. The file has been seen being downloaded from get.file8desktop.com.
Publisher:
CLICK TO START  (signed and verified)

MD5:
90ea2c9bb29de8d505eccca1a694c63c

SHA-1:
c152e1b4b15241d0d7f4e9d29dc8d3c060cb62c0

SHA-256:
d157e3596ecbabfe22f75fc95f4f25656d75aba092dde0b6e8fe6512d570aecb

Scanner detections:
1 / 68

Status:
Adware

Note:
Our current pool of anti-malware engines have not currently detected this file, however based on our own detection heuristics we feel that this file is unwanted.

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:
4/16/2025 10:37:08 AM UTC  (today)

Scan engine
Detection
Engine version

Reason Heuristics
PUP.Outbrowse.CLICKTOSTART.Bundler (M)
16.1.2.8

File size:
582.8 KB (596,760 bytes)

File type:
Executable application (Win32 EXE)

Bundler/Installer:
OutBrowse Revenyou (using Nullsoft Install System)

Language:
Language Neutral

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

Digital Signature
Signed by:
CLICK TO START

Authority:
thawte, Inc.

Valid from:
1/6/2015 7:00:00 PM

Valid to:
12/17/2015 6:59:59 PM

Subject:
CN=CLICK TO START, O=CLICK TO START, L=Dublin, S=Dublin, C=IE

Issuer:
CN=thawte SHA256 Code Signing CA, O="thawte, Inc.", C=US

Serial number:
4F3BE44946324B1AD2F476F75541A7E7

File PE Metadata
Compilation timestamp:
12/5/2009 5:50:52 PM

OS version:
4.0

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
6.0

CTPH (ssdeep):
12288:axVEa7wUx71OGsoxeyq9kmOSlEHAGeVdr5QYfZ/okzJrv/aNrd:axVBx7IGKJGVgnrjZ/ogrvS

Entry address:
0x30FA

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, 18, EC, 42, 00, E8, F1, 2B, 00, 00, A3, 64, EB, 42, 00, 53, 8D, 44, 24, 34, 68, 60, 01, 00, 00, 50, 53, 68, 98, 8F, 42, 00, FF, 15, 58, 71, 40, 00, 68, 54, 91, 40, 00, 68, 60, E3, 42, 00, E8, A4, 28, 00, 00, FF, 15, AC, 70, 40, 00, BF, 00, 40, 43, 00, 50, 57, E8, 92, 28, 00, 00...
 
[+]

Entropy:
7.9684

Packer / compiler:
Nullsoft install system v2.x

Code size:
23.5 KB (24,064 bytes)

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

http://get.file8desktop.com/DownloadManager/Get?p=18044&d=24018&l=23220&n=1&productname=Download Manager&exeurl=http://download.skype.com/f91abd10a88c144359e4c598ef9928ca/partner/.../SkypeSetup.exe&dynamicname=Skype&S=os[Windows 7]__browser[Chrome]&d2=284729&filename=SkypeSetup

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