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net framework 4.5.1.exe

Microsoft .NET Framework

Innovative Systems LLC

The application net framework 4.5.1.exe by Innovative Systems has been detected as adware by 40 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 dotnetframework.joydownload.com and multiple other hosts.
Publisher:
Innovative Systems LLC  (signed and verified)

Product:
Microsoft .NET Framework

Version:
1.0.0.0

MD5:
302b015ab01ff808b95456f818893027

SHA-1:
3e5f5f8521d45d50dc0e4c8926abda242b64a396

SHA-256:
a00efd660eba3dc4c32cb2db21dcb52ff82749dabb3a54b550ed9eff515219bb

Scanner detections:
40 / 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:
4/26/2024 5:49:15 PM UTC  (today)

Scan engine
Detection
Engine version

Lavasoft Ad-Aware
Gen:Trojan.Heur.Fu3@xK62Y8gi
540

Agnitum Outpost
Riskware.Agent
7.1.1

AhnLab V3 Security
PUP/Win32.OpenCandy
2015.03.14

Avira AntiVirus
APPL/Downloader.Gen
7.11.217.26

AVG
OpenCandy
2016.0.3018

Baidu Antivirus
Adware.Win32.OpenCandy
4.0.3.15813

Bitdefender
Gen:Trojan.Heur.Fu3@xK62Y8gi
1.0.20.1125

Clam AntiVirus
Win.Trojan.Agent-803351
0.98/21511

Comodo Security
UnclassifiedMalware
21402

Dr.Web
Adware.OpenCandy.55
9.0.1.0225

Emsisoft Anti-Malware
Gen:Trojan.Heur.Fu3@xK62Y8gi
8.15.08.13.06

ESET NOD32
Win32/JoyDownloader.D potentially unwanted
9.11318

F-Secure
Gen:Trojan.Heur.Fu3@xK62Y8gi
11.2015-13-08_5

G Data
Gen:Trojan.Heur.Fu3@xK62Y8gi
15.8.25

IKARUS anti.virus
PUA.JoyDownloader
t3scan.1.7.5.0

K7 AntiVirus
Unwanted-Program
13.200.15259

Malwarebytes
PUP.Optional.OpenCandy
v2015.08.13.06

McAfee
Artemis!302B015AB01F
5600.6674

MicroWorld eScan
Gen:Trojan.Heur.Fu3@xK62Y8gi
16.0.0.675

Reason Heuristics
PUP.InnovativeSystems.Installer (M)
15.8.13.18

Trend Micro House Call
ADW_OPENCANDY
7.2.225

Trend Micro
ADW_OPENCANDY
10.465.13

VIPRE Antivirus
Trojan.Win32.Generic
38406

File size:
496.5 KB (508,384 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\net framework 4.5.1.exe

Digital Signature
Signed by:
Innovative Systems LLC

Authority:
Thawte, Inc.

Valid from:
9/18/2014 5:00:00 PM

Valid to:
9/19/2015 4:59:59 PM

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:
5/19/2013 4:52:48 PM

OS version:
4.0

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
6.0

CTPH (ssdeep):
12288:bQnZ/FTvCKFy+zYylM5R1yrwLPgvlgKiFH:UZ/FTTVy5qrwLPSmFH

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:
7.8449

Packer / compiler:
Nullsoft install system v2.x

Code size:
24 KB (24,576 bytes)

The file net framework 4.5.1.exe has been seen being distributed by the following 4 URLs.

http://dotnetframework.joydownload.com/get_azure_file/wUiS4WnYccXBwj sXP7oQkEsnl0kPTqmGxv2cteQv A8/zyn9np5iNEMJ1XlbKn3fHm ykYcdnGHWOOmEqc20bIjzsSXFVPS7SS7BkH9qjzm1aGO6ZrKmiBBop8iwwwWRn3kADt/hsIs/ir8SGjaSrhW2pG4a2IVY/.../CsXhBnhATln50dUXnzDVT5op7lzwclOHLFvmFX19rZIjHxEVPW0fB Yk8=

http://dotnetframework.joydownload.com/get_azure_file/wUiS4WnYccXGwj 8XPavWwllklU1NSrZTVziFp6C6LZxsielsmxszsUPMxKvPan3fHm ykYcdnGHWOOmEqc20bIjzsSXFVPS7SS7BkH9qjzm1aGO6ZrKmiBBp58i1h0CDTTyGDUsnsIt/yP/.../t D9G3c8i8LygIzcr F wujRwQ7Yn7n1O7ZKt1nT7yWowdspbyBju1oZrTkC0lbaQXGsBjbDt18rP6SF0 zE2i3J5OECbzX1SnsZGnzQ0vLHDAqmFX19rZIjHxEVPW0fB Yk8=

http://dotnetframework.joydownload.com/get_azure_file/wUiS4WnYccXBwj pXP7oQlssmVx1NTutCkGrNM7Y9uk053f8pnp5iNENJ1WhMe/uNDC2xl5KMGGNGOqjCr50yb1q1pDEW1mD9GzyDkX9qgXqz Wn7IiFxCQU484gh0tHSne5X3Yghshq9CnwSCfdUrcfwsbrJTYVY/.../ajRHE8csvENBonjKDiAC1mcoP4w7h9TjD450jExfVtAJO1dsCsanhb1IK3H M2wF4H5sv3ilLqKfMrw3PhQN1Wrc26Q3P758jT2nBxLvMBGZY2enUitei1SUUl0EP0gZ8VTnmmWU osZGnzQkvLCSb5D5Bn8vYc3irT1PciPNtYk8=

http://dotnetframework.es.joydownload.com/get_azure_file/wUiS4WnYccXGwj 8XPavWwllklU1NSrZTVziFp6C6LZxsielsmxszsUPMxKvPan3fHm9wF5KZjrPW7X2UfB1n6trh8ycAgaDq3C8UhOz7jnu1qCW8ZuDg2gIq5c6kQoBRn3kADl/hoRwoH lHSCLS/9Wy83zcW5TerJxJR4FIa31V3l8fNzFZREhhrOnS3I3c9z40OZ2BG woAyQwKs5RoC2M8itZWNd38ivFqounRcHqczvhhvyb6Bnlj6tQMVb5NXuCzmw8cSCkXUqZrJCTYE9PHcrt nkFxlrnE/.../xp4jvhAUmNGCE4T4G1prZNXi6RETdifxtYk8=

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