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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 19 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. The file has been seen being downloaded from skype.1800download.com.
Publisher:
RICH MEDIA SYSTEMS INC.  (signed and verified)

Product:
Skype

Version:
1.0.0.0

MD5:
fe43f1d2d67d03424cffe6f37b635e86

SHA-1:
0d59b6da2edd86574c0f89648debfbc98909d079

Scanner detections:
19 / 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 5:29:57 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
2017.0.2836

Baidu Antivirus
Adware.Win32.Agent
4.0.3.16211

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

Dr.Web
Adware.Downware.10304
9.0.1.042

ESET NOD32
Win32/OpenCandy.C potentially unsafe (variant)
10.11713

Fortinet FortiGate
Riskware/OpenCandy
2/11/2016

G Data
Win32.Adware.OpenCandy
16.2.25

K7 AntiVirus
Trojan
13.204.16089

Malwarebytes
PUP.Optional.OpenCandy
v2016.02.11.12

McAfee
Artemis!D11B03DAA44B
5600.6492

NANO AntiVirus
Riskware.Win32.Downloader.dqybkl
0.30.24.1636

Panda Antivirus
PUP/OpenCandy
16.02.11.12

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

Reason Heuristics
PUP.RICHMEDIASYSTEMS.Installer (M)
16.2.11.12

Sophos
Generic PUA CE
4.98

Trend Micro House Call
Suspicious_GEN.F47V0325
7.2.42

VIPRE Antivirus
Trojan.Win32.Generic
40720

File size:
418 KB (428,032 bytes)

File type:
Executable application (Win32 EXE)

Installer:
NSIS (Nullsoft Scriptable Install System)

Language:
English (United States)

Common path:
C:\Documents and Settings\{user}\Local settings\temp\{random}.tmp\skypesetup.exe

Digital Signature
Signed by:
RICH MEDIA SYSTEMS INC.

Authority:
Symantec Corporation

Valid from:
2/16/2015 4:00:00 PM

Valid to:
2/17/2016 3:59:59 PM

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:
5/19/2013 4:53:00 PM

OS version:
4.0

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
6.0

CTPH (ssdeep):
12288:uiuRLVpHBK780yeFF/bjL1C16ZxJeaLn5uZQKi48Voiv:q1V1BK7bX7CoQaL5u2KiBv

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:
7.8221

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 URL.

http://skype.1800download.com/get_azure_file/wUiS4WnYccXBwj pXP7oQlssmV89fDKjEgqkOYCGp h152T6qHoRkJJOeCSyLP68ISb0lUZTcWmPEfv QeElyPpqxsyPBA D9GzyD0zl/iLrmf6SpN/Sg2FJpJYxhEdJF3ylACwq19EivSH9UHHeGeIIl4CiJTxEYro4PVhWZ738FXB8ctzPJR0wh LuFCw3Lc2yiK9gHGLjuFvLnvlsAZe7dcSlLHta1dPrQrVwyl8H5sv3j1Lqb65nnG sAs9X/.../rBwfhoojvig==

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