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net-framework-4.5.1 final.exe

Microsoft .NET Framework

Sevas-S LLC

The application net-framework-4.5.1 final.exe by Sevas-S has been detected as adware by 13 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 es.joydownload.com and multiple other hosts.
Publisher:
Sevas-S LLC  (signed and verified)

Product:
Microsoft .NET Framework

Version:
1.0.0.0

MD5:
eba8acab9765862b1eb6cd907fedf237

SHA-1:
f1c106f28af01dc6203f07b97737d55e009a1fbc

SHA-256:
07b1c6f770fcfbe56ee17814433cfe48676da54575ccb44903c670e08d7c75ee

Scanner detections:
13 / 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:
11/2/2024 11:18:47 AM UTC  (today)

Scan engine
Detection
Engine version

Lavasoft Ad-Aware
Gen:Trojan.Heur.Du3@xmA1rAbi
1100

Bitdefender
Gen:Trojan.Heur.Du3@xmA1rAbi
1.0.20.155

Comodo Security
Application.Win32.OpenCandy.~WD
17687

Emsisoft Anti-Malware
Gen:Trojan.Heur.Du3@xmA1rAbi
8.14.01.31.04

ESET NOD32
Win32/JoyDownloader
8.9345

F-Secure
Gen:Trojan.Heur.Du3@xmA1rAbi
11.2014-31-01_6

G Data
Gen:Trojan.Heur.Du3@xmA1rAbi
14.1.24

herdProtect (fuzzy)
variant of install_virtualdj_home_v7.4-aoc-jd.exe (Adware)
2014.4.5.16

Malwarebytes
PUP.Optional.OpenCandy
v2014.01.31.04

MicroWorld eScan
Gen:Trojan.Heur.Du3@xmA1rAbi
15.0.0.93

Qihoo 360 Security
HEUR/Malware.QVM06.Gen
1.0.0.1015

Reason Heuristics
PUP.SevasS.X
14.8.7.20

Rising Antivirus
PE:PUF.OpenCandy!1.9DE5
23.00.65.14129

File size:
475.4 KB (486,840 bytes)

File type:
Executable application (Win32 EXE)

Installer:
NSIS (Nullsoft Scriptable Install System)

Language:
English (United States)

Common path:
C:\Documents and Settings\{user}\My documents\downloads\net-framework-4.5.1 final.exe

Digital Signature
Signed by:
Sevas-S LLC

Authority:
VeriSign, Inc.

Valid from:
1/22/2013 4:00:00 PM

Valid to:
2/22/2014 3:59:59 PM

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:
5/19/2013 4:52:54 PM

OS version:
4.0

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
6.0

CTPH (ssdeep):
12288:EaCYZDV+vFhjs17FEUDTTup+Ts9PJYz5jtNcB+/TRfYV:imDVaFhm7FjDHuzJYz5jtXTBYV

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:
7.8341

Packer / compiler:
Nullsoft install system v2.x

Code size:
23.5 KB (24,064 bytes)

The file net-framework-4.5.1 final.exe has been seen being distributed by the following 5 URLs.

http://es.joydownload.com/wi/74ec16a6a80423103e042dfe890bf9f5/1/3/1/.../net-framework-4.5.1 Final.exe

http://pt.joydownload.com/wi/ca4b97f21dbc4bb9e3f25798cd384e5f/1/3/1/.../net-framework-4.5.1 Final.exe

http://www.joydownload.com/wi/3678418d1d14dda7deb5def41a59cf17/1/3/1/.../net-framework-4.5.1 Final.exe

http://www.joydownload.com/wi/21804ad9a60f74449c9e9e7c845b2cbe/1/3/1/.../net-framework-4.5.1 Final.exe

http://www.joydownload.com/wi/1/3/1/.../net-framework-4.5.1 Final.exe

The executing file has been seen to make the following network communication in live environments.

TCP (HTTP):
Connects to ec2-23-21-66-175.compute-1.amazonaws.com  (23.21.66.175:80)

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