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uzmn8md7.exe

Skype

Sevas-S LLC

The file uzmn8md7.exe by Sevas-S has been detected as adware by 17 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 www.joydownload.com and multiple other hosts.
Publisher:
Sevas-S LLC  (signed and verified)

Product:
Skype

Version:
1.0.0.0

MD5:
7c37f524aa1aadf23daeb4b23e3bd35b

SHA-1:
2198636583adf7a448e828b76d3a1f704d631295

SHA-256:
b624757db6f0a7346efc7aa7c4d142c0b686a35b765456ccb8ee3b5b597310e4

Scanner detections:
17 / 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:
11/25/2024 9:03:23 PM UTC  (today)

Scan engine
Detection
Engine version

Agnitum Outpost
Riskware.OpenCandy
7.1.1

AhnLab V3 Security
PUP/Win32.OpenCandy
2015.01.07

Avira AntiVirus
APPL/Downloader.Gen
7.11.199.196

AVG
OpenCandy
2016.0.3237

Comodo Security
Application.Win32.OpenCandy.~WD
20621

Dr.Web
Adware.Downware.1446
9.0.1.06

ESET NOD32
Win32/JoyDownloader
9.10973

G Data
Win32.Adware.OpenCandy
15.1.24

K7 AntiVirus
Unwanted-Program
13.1814554

Malwarebytes
PUP.Optional.OpenCandy
v2015.01.06.06

McAfee
Artemis!7C37F524AA1A
5600.6893

NANO AntiVirus
Riskware.Win32.OpenCandy.ddmsby
0.30.0.64448

Reason Heuristics
PUP.SevasS.M
15.1.6.18

Rising Antivirus
PE:PUF.OpenCandy!1.9DE5
23.00.65.15104

Sophos
OpenCandy
4.98

Trend Micro House Call
Suspicious_GEN.F47V1115
7.2.6

VIPRE Antivirus
Sevas-S Installer
36436

File size:
475.4 KB (486,792 bytes)

Installer:
NSIS (Nullsoft Scriptable Install System)

Language:
English (United States)

Common path:
C:\users\{user}\appdata\local\temp\uzmn8md7.exe.part

Digital Signature
Signed by:
Sevas-S LLC

Authority:
VeriSign, Inc.

Valid from:
1/23/2013 2:00:00 AM

Valid to:
2/23/2014 1:59:59 AM

Subject:
CN=Sevas-S LLC, OU=Digital ID Class 3 - Microsoft Software Validation v2, O=Sevas-S LLC, L=Kyiv, S=Kyivska oblast, C=UA

Issuer:
CN=VeriSign Class 3 Code Signing 2010 CA, OU=Terms of use at https://www.verisign.com/rpa (c)10, OU=VeriSign Trust Network, O="VeriSign, Inc.", C=US

Serial number:
527471E53862E2F90AB45ED4ACB8F4C2

File PE Metadata
Compilation timestamp:
5/20/2013 2:52:54 AM

OS version:
4.0

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
6.0

CTPH (ssdeep):
12288:kaCHLIlvFhjs17FEUDTTup+Ts9PJYz5jtNcB+/TRfYE:CrIBFhm7FjDHuzJYz5jtXTBYE

Entry address:
0x31B1

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, D8, 92, 40, 00, 89, 6C, 24, 14, FF, 15, 34, 70, 40, 00, 68, 01, 80, 00, 00, FF, 15, 34, 71, 40, 00, 55, FF, 15, AC, 72, 40, 00, 6A, 08, A3, 58, 92, 42, 00, E8, 90, 2E, 00, 00, A3, A4, 91, 42, 00, 55, 8D, 44, 24, 34, 68, B4, 02, 00, 00, 50, 55, 68, 58, 06, 42, 00, FF, 15, 7C, 71, 40, 00, 68, C0, 92, 40, 00, 68, A0, 81, 42, 00, E8, FB, 2A, 00, 00, FF, 15, 38, 71, 40, 00, BB, 00, 40, 43, 00, 50, 53, E8, E9, 2A, 00, 00...
 
[+]

Entropy:
7.8552

Packer / compiler:
Nullsoft install system v2.x

Code size:
23.5 KB (24,064 bytes)

The file uzmn8md7.exe has been seen being distributed by the following 4 URLs.

http://www.joydownload.com/wi/495455b7d2e19d5183a5d54cc868d50e/1/3/1/.../skype-.exe

http://es.joydownload.com/wi/71eef705a2dc6028056e5724bc3b8854/1/3/1/.../skype-.exe

http://www.joydownload.com/wi/3b5a23c21cd43e181c89332be62e8e3a/1/3/1/.../skype-.exe

http://www.joydownload.com/wi/999fb4c52f4c4ad328487f8b6a773612/1/3/1/.../skype-.exe

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