skypesetup.exe

Skype

RICH MEDIA SYSTEMS INC.

The application skypesetup.exe by RICH MEDIA SYSTEMS INC has been detected as a potentially unwanted program by 18 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.1800download.com and multiple other hosts.
Publisher:
RICH MEDIA SYSTEMS INC.  (signed and verified)

Product:
Skype

Version:
1.0.0.0

MD5:
d11b03daa44bfe891f5deb10662d93b8

SHA-1:
240fd80d6514eeb7b762939d8b773788c18fe4d0

SHA-256:
31b0214cdffc46f18292b98871e3a29687c42f8e3072a51ad5251dbb03105833

Scanner detections:
18 / 68

Status:
Potentially unwanted

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:
5/17/2025 6:09:49 PM UTC  (today)

Scan engine
Detection
Engine version

Agnitum Outpost
Riskware.Agent
7.1.1

AhnLab V3 Security
PUP/Win32.OpenCandy
2015.06.01

AVG
OpenCandy
2016.0.3087

Baidu Antivirus
Adware.Win32.Agent
4.0.3.1566

Clam AntiVirus
Win.Trojan.Agent-855157
0.98/21511

Dr.Web
Adware.Downware.10304
9.0.1.0157

ESET NOD32
Win32/OpenCandy.C potentially unsafe (variant)
9.11713

G Data
Win32.Adware.OpenCandy
15.6.25

K7 AntiVirus
Trojan
13.204.16089

Malwarebytes
PUP.Optional.OpenCandy
v2015.06.06.11

McAfee
Artemis!D11B03DAA44B
5600.6743

NANO AntiVirus
Riskware.Win32.Downloader.dqybkl
0.30.24.1636

Panda Antivirus
PUP/OpenCandy
15.06.06.11

Qihoo 360 Security
HEUR/QVM42.0.Malware.Gen
1.0.0.1015

Reason Heuristics
PUP.Installer.RICHMEDIASYSTEMS
15.6.6.7

Sophos
Generic PUA CE
4.98

Trend Micro House Call
Suspicious_GEN.F47V0325
7.2.157

VIPRE Antivirus
Trojan.Win32.Generic
40720

File size:
415.6 KB (425,592 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:
Symantec Corporation

Valid from:
2/17/2015 2:00:00 AM

Valid to:
2/18/2016 1:59:59 AM

Subject:
CN=RICH MEDIA SYSTEMS INC., O=RICH MEDIA SYSTEMS INC., L=HENDERSON, S=Nevada, C=US

Issuer:
CN=Symantec Class 3 SHA256 Code Signing CA, OU=Symantec Trust Network, O=Symantec Corporation, C=US

Serial number:
3F87144C25AF8BCF29F29C5A1FEEF4BA

File PE Metadata
Compilation timestamp:
5/20/2013 2:53:00 AM

OS version:
4.0

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
6.0

CTPH (ssdeep):
12288:siuRL5Z6mzyGREL7do3D7XP4tIguPqaweU/2pGr/K:w15ZBGGREfdQEXaweU+pG2

Entry address:
0x331C

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, 98, 92, 42, 00, E8, A8, 2E, 00, 00, A3, E4, 91, 42, 00, 55, 8D, 44, 24, 34, 68, B4, 02, 00, 00, 50, 55, 68, 90, 06, 42, 00, FF, 15, 7C, 71, 40, 00, 68, 7C, 93, 40, 00, 68, E0, 81, 42, 00, E8, 13, 2B, 00, 00, FF, 15, 34, 71, 40, 00, BB, 00, 40, 43, 00, 50, 53, E8, 01, 2B, 00, 00...
 
[+]

Entropy:
7.8206

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 9 URLs.

http://skype.1800download.com/get_azure_file/wUiS4WnYccXBwj sXP7oQkEsnl0kPTqiGxn1cteQv c8/zOn/j1gwJgELEPtevindjPpgwEcdyOSTqHyCr50ybtq1oLZFQfS9S7yHkflszi1jf/D IaExTYJs55ziVZIRnSiCyx 18ko/iHoDjraAOANgYKjayUMK7M3JQpMaOa3A2h0O8TNLAli1fX2GWUve4/g0O4zHGL5uFzFjqokRMv/JdClNntd28O6Husjlh0V5sv3jlLqLfMhhSf/Cc5V5YSxQXP77NKCkW8qYLxRAt1jbSBk8/.../rBAfhoJn2zEI=

http://skype.ar.1800download.com/get_azure_file/wUiS4WnYccXAwj 1RrjxCgghkkVxZmbzR1 xcteQv c8/zOn/j1gwJgELEPtevindjPpgwEcdyOSTqHyCr50ybtq1oLZFQfS9S7yHkflszi1ivXbvI2B0iMX8Nx1wQlQXzWtDzRn15hgvn7oUSCTQ7ZOjp61JTxEYr84PRoNNqz2UWh0O8TILAl3xOG9UHM3c9z40Ok3CW24s1vGnvQvDpG3Ypv3O2NXnMu/F/snnA8eroL h0q4N/.../xppv2zEI=

http://skype.es.1800download.com/get_azure_file/wUiS4WnYccXAwj 1RrjxCgghkkVxZmbzR1 xcteQv A8/.../hoBwqjnxA2mYSLcfwsTrJXFePKs5bBIJOb31VH98ecncLVgoiqv2RHl5LNCww Z2BGqwoFjKne1nR5i8cMi8Oygfn53sVKxmww8eroL4h0q7NeM1wj6tQMVe5NX7Gi37uNKamSYyZrVFV49 M3kporfvXUMj2wS7jtdFFy7mBA33pJrszEI=

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