skypesetup.exe

Skype

Innovative Systems LLC

The application skypesetup.exe by Innovative Systems has been detected as adware by 21 anti-malware scanners. The program is a setup application that uses the NSIS (Nullsoft Scriptable Install System) installer. The installer uses the OpenCandy monitzation platform which will donwload and install offers in the setup for potentially unwanted software including ad/search-supported toolbars. It is also typically executed from the user's temporary directory. The file has been seen being downloaded from skype.joydownload.com and multiple other hosts.
Publisher:
Innovative Systems LLC  (signed and verified)

Product:
Skype

Version:
1.0.0.0

MD5:
ab6eef5598f4c5199b5202068a57e81e

SHA-1:
959b0158b598959ba9a19923dc13504284d5a17c

SHA-256:
1963491f0dd49bfe5da1bac63223b0c232bbea7c689a89c789836d4fd57feed5

Scanner detections:
21 / 68

Status:
Adware

Explanation:
Packages the OpenCandy software bundler that offers to install additional software and may include web browser add-ons and toolbars which display advertising (based on publisher settings and geo context).

Analysis date:
12/27/2024 5:02:58 PM UTC  (today)

Scan engine
Detection
Engine version

Agnitum Outpost
Riskware.Agent
7.1.1

AhnLab V3 Security
PUP/Win32.OpenCandy
2014.08.22

Avira AntiVirus
APPL/Downloader.Gen
7.11.176.180

avast!
Win32:Rootkit-gen [Rtk]
2014.9-141006

AVG
OpenCandy
2015.0.3330

Baidu Antivirus
Adware.Win32.OpenCandy
4.0.3.14106

Clam AntiVirus
Win.Trojan.Opencandy
0.98/21411

Comodo Security
Application.Win32.OpenCandy.~WD
18598

Dr.Web
Adware.Downware.6712
9.0.1.0279

ESET NOD32
Win32/JoyDownloader
8.10515

G Data
Win32.Adware.OpenCandy
14.10.24

IKARUS anti.virus
PUA.JoyDownloader
t3scan.1.7.5.0

K7 AntiVirus
Unwanted-Program
13.180.12456

Malwarebytes
PUP.Optional.OpenCandy
v2014.10.06.09

McAfee
Artemis!AB6EEF5598F4
5600.6986

NANO AntiVirus
Riskware.Win32.OpenCandy.cxlnia
0.28.0.60253

Reason Heuristics
PUP.Installer.InnovativeSystems.K
14.10.6.9

Rising Antivirus
PE:PUF.OpenCandy!1.9DE5
23.00.65.141004

Sophos
OpenCandy
4.98

Trend Micro House Call
TROJ_GEN.F47V0604
7.2.279

VIPRE Antivirus
Opencandy
32442

File size:
496.8 KB (508,720 bytes)

File type:
Executable application (Win32 EXE)

Installer:
NSIS (Nullsoft Scriptable Install System)

Language:
English (United States)

Common path:
C:\users\{user}\appdata\local\temp\{random}.tmp\skypesetup.exe

Digital Signature
Authority:
Thawte, Inc.

Valid from:
9/19/2014 3:00:00 AM

Valid to:
9/20/2015 2:59:59 AM

Subject:
CN=Innovative Systems LLC, O=Innovative Systems LLC, L=Dnepropetrovsk, S=Dnepropetrovska, C=UA

Issuer:
CN=Thawte Code Signing CA - G2, O="Thawte, Inc.", C=US

Serial number:
09A91C40EAE34E72CD975B0B218AE4BA

File PE Metadata
Compilation timestamp:
5/20/2013 2:52:48 AM

OS version:
4.0

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
6.0

CTPH (ssdeep):
12288:XQgLMwvx826UXtVSlAmmCayHN7HfpGe8EEQ+eTrkK37:gSMwm9SzSimmWHN7HxiJQ+eTr5r

Entry address:
0x331F

Entry point:
81, EC, D4, 02, 00, 00, 53, 55, 56, 57, 6A, 20, 33, ED, 5E, 89, 6C, 24, 18, C7, 44, 24, 10, 30, 92, 40, 00, 89, 6C, 24, 14, FF, 15, 34, 70, 40, 00, 68, 01, 80, 00, 00, FF, 15, BC, 70, 40, 00, 55, FF, 15, AC, 72, 40, 00, 6A, 08, A3, D8, 7A, 7A, 00, E8, A8, 2E, 00, 00, A3, 24, 7A, 7A, 00, 55, 8D, 44, 24, 34, 68, B4, 02, 00, 00, 50, 55, 68, D0, EE, 79, 00, FF, 15, 7C, 71, 40, 00, 68, 7C, 93, 40, 00, 68, 20, 6A, 7A, 00, E8, 13, 2B, 00, 00, FF, 15, 34, 71, 40, 00, BB, 00, 20, 7B, 00, 50, 53, E8, 01, 2B, 00, 00...
 
[+]

Entropy:
7.8638

Packer / compiler:
Nullsoft install system v2.x

Code size:
24 KB (24,576 bytes)

The file skypesetup.exe has been seen being distributed by the following 21 URLs.

http://skype.joydownload.com/get_azure_file/wUiS4WnYccXAwj 1RrjxCgghkkVxZmbzR1 xcteQv U8/zOh/jwnickFbk3kYqn O3quyxdSNmmeTbD7Tac8gLNhwMyPRFfYv3q7WQKy GXqw6DDpZrSkmlZ4sxkkV4bXnesSTR2ntFwp3/oUSCTQrZOysPzPHQNa7MgaUFbIaS0XHx1aszMJBsjjrPvUSwmcpeyiLknBSqwsVDdnfxqFpn esSkfSQUn5j/SPsvxhcU6Yn/j139ZqlxnG sAs9X/.../rBwfhoojvig==

http://skype.il.joydownload.com/get_azure_file/wUiS4WnYccXAwj 1RrjxCgghkkVxZmbzR1 xcteQv A8/.../ykYbazeeELCtGb50ybpq1obEUx6avCX7BlT2u32tgLbbrdPK1zofs55ziVNIRnSlCD50ltEivSH4UHHdBK5Xi83gPSUGerJxJR4FIfmoCi4qOtzFZREhhrPmFi83c8b41 cnWyH66xiajvQ1DpO5ccCqb3Fd3MS2XuMglQ9DtNSon1O7ZKtxnT7lWIYdu4TuBzyprcTYzz4rJLxCRY4vbSZg8L72VF8j0gS7lNdBGT6iXUSz9ojvig==

http://skype.joydownload.com/get_azure_file/wUiS4WnYccXBwj qXP7oQkEsm10kPjuhChOxat/Zp7pvuXf14WJwwckMKVXsK7H6NWHpiBQBcDaeELCtGbE2wb9mwMGYBQfS9S3yHhm0qnD8gfLbvJ6BzzcU5tYiiBZIVXatGGos14N1r2K/GD LS/9Wzc3zdGxOKOwgJFsFMKXlFSMrasWXLBopz6vgGDRzIdmnw Z2BGi uEiMx7YsUdHoNIfucSQUitO2XuMmlQ9RqZr2zlL5ZLh0hSflCcxX/IHiF2vi8JuWkD4iZbRDRIYvMjwptui1S0U92kPyxdYHGS/.../3qojvig==

http://skype.joydownload.com/get_azure_file/wUiS4WnYccXBwj zXP7oQkEsml0kPTy1E1v4ZtbB47xquTC8sGMxwdgEP0XjYan3fHm ykYcdnGHWOOmEqc20bIjzsSXFVPS7SS7BkH9qjzm1aGO6ZrKmiBBp58i1h0CDTTyGDUsnsIt/ynyWGKRQrpXi83iPSVBMe0gJFsFNaXlVHh9eM/MNBBhhqDkGDRxIcayjbx8SyvmoFGMlvpmFtHmOYL7fXof1cW3D799w0gH5sv3jFzyfOku3mzzQJoZq4elFjG8oZrTkC8qdfUaEZY2YHUiu6GtHhBzzk/.../rFAzwpYjvig==

http://jdcdnnet.blob.core.windows.net/fas/wi/1/24/1/.../skypesetup.exe

http://skype.il.joydownload.com/get_azure_file/wUiS4WnYccXAwj uQbjxCggnkkU3LTPkEhv4cpyK4fE9rm/.../oUTqTQbcfwsbhPSVTMfpyc0lGdu2rRHE8csvENFh5xeGxAC1mcof4w7J2HGL5uF3Fjrg1WsbiN4G8ZDJW3MuvRLBwjRZW54r3n1r8fKE2nS sEYkEutWwAHPvuYOSmC4gZrRRTsc3P3Ux5arnRFg0nB3p3dxAEi7kBA31qpnvig==

http://skype.joydownload.com/get_azure_file/wUiS4WnYccXBwj qXP7oQkEsm10kPjuhChOxatrZp7Z rTy893p5ktEPKUblarj/.../T3zT0z1smn7z fa7dPZm3FKs55ziVNIRiD4Vmog1tEivSH5UHGbRLVOw4TrND0VMeBmPRNMOa39RHh7asWNLBkonv6nAC1mcoL4w6psUD3l9Rndl7xmBZK3Ypb3LDEAjoj4X7U2lF4f6ILvzgOxLv9nnG sB8VPuJ7nFmvi8JuRniYyJO0KBdF bDtm8PzyVU9zhVW61NdWUHW1FAaqqZvvig==

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