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skypesetup.exe

TiKi TaKa

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 TiKi TaKa 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:
TiKi TaKa  (signed and verified)

MD5:
51a107ce7d769e405e7fceffcbc73c39

SHA-1:
86f1a63eb5fa29389c441c8770635b15fcad48fb

SHA-256:
c930a2be5f43b8117500529ff1a661d3683e5c53f10ed2a693846d83942d3a2e

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 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:
4/16/2025 10:36:43 AM UTC  (today)

Scan engine
Detection
Engine version

Reason Heuristics
PUP.Outbrowse.TiKiTaKa.Bundler (M)
16.4.6.0

File size:
572.4 KB (586,152 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:
TiKi TaKa

Authority:
thawte, Inc.

Valid from:
1/16/2015 6:00:00 PM

Valid to:
12/17/2015 5:59:59 PM

Subject:
CN=TiKi TaKa, O=TiKi TaKa, L=Dublin, S=Dublin, C=IE

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

Serial number:
3487E38E20A9221880B21663DD3A995D

File PE Metadata
Compilation timestamp:
12/5/2009 4:50:52 PM

OS version:
4.0

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
6.0

CTPH (ssdeep):
12288:uZmHMQjzWX31DeCT+gTrbgwmsNn5H2XulIfOBLRNMKlHDi1hEkDYW:uksQjSnICNTrhmsN5H2UxLRNM64DMW

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:
7.9702

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 8.1]__browser[Chrome]&d2=284729&filename=SkypeSetup

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