netdownloader.exe

Cash Buyer Media

This is the Vittalia Filewon Installer which bundles applications with offers for additional 3rd party software, mostly unwanted adware, and may be installed with minimal consent. The application netdownloader.exe by Cash Buyer Media has been detected as adware by 21 anti-malware scanners. The program is a setup application that uses the Vittalia DM installer. It is also typically executed from an Internet Explorer cache folder. The file has been seen being downloaded from www.4sinstalls.com and multiple other hosts.
Publisher:
Cash Buyer Media  (signed and verified)

MD5:
2aba762523b35710745a04cad6941eb1

SHA-1:
15357663852d81a79dba8d3452616a742124c8ba

SHA-256:
74884267b28c647b8a098c015965402e9489aa871dc670b2c0f5a935b2c65fe5

Scanner detections:
21 / 68

Status:
Adware

Explanation:
Bundles additional software, mostly toolbars and other potentially unwanted applications using the Vittalia monitization installer.

Description:
This is also known as bundleware, or downloadware, which is an downloader designed to simply deliver ad-supported offers in the setup routine of an otherwise legitimate software.

Analysis date:
12/3/2024 4:57:08 PM UTC  (today)

Scan engine
Detection
Engine version

Agnitum Outpost
Riskware.Agent
7.1.1

AhnLab V3 Security
PUP/Win32.DownloadAdmin
2015.06.11

Avira AntiVirus
PUA/DownloadAdmin.Gen
8.3.1.6

AVG
Generic
2016.0.3081

Baidu Antivirus
PUA.Win32.DownloadAdmin
4.0.3.15611

Bkav FE
W32.HfsAdware
1.3.0.6379

Clam AntiVirus
Win.Trojan.Downloadadmin
0.98/21511

Dr.Web
Trojan.Vittalia.74
9.0.1.0162

ESET NOD32
Win32/DownloadAdmin.I potentially unwanted (variant)
9.11765

Fortinet FortiGate
Riskware/DownloadAdmin
6/11/2015

F-Prot
W32/S-8649671e
v6.4.7.1.166

G Data
Win32.Adware.DownloadAdmin
15.6.25

K7 AntiVirus
Unwanted-Program
13.204.16204

Malwarebytes
PUP.Optional.DownloadAdmin
v2015.06.11.02

McAfee
Artemis!2ABA762523B3
5600.6737

NANO AntiVirus
Trojan.Win32.XPACK.dprfbr
0.30.24.2086

Reason Heuristics
PUP.Installer.CashBuyerMedia
15.6.11.10

Trend Micro House Call
Suspicious_GEN.F47V0610
7.2.162

Vba32 AntiVirus
Downloader.Agent
3.12.26.4

VIPRE Antivirus
Trojan.Win32.Generic
41008

Zillya! Antivirus
Downloader.Agent.Win32.253570
2.0.0.2217

File size:
655.6 KB (671,360 bytes)

File type:
Executable application (Win32 EXE)

Bundler/Installer:
Vittalia DM (using Nullsoft Install System)

Language:
Language Neutral

Common path:
C:\users\{user}\appdata\local\microsoft\windows\temporary internet files\content.ie5\{random}\netdownloader.exe

Digital Signature
Authority:
VeriSign, Inc.

Valid from:
2/5/2015 5:30:00 AM

Valid to:
2/6/2016 5:29:59 AM

Subject:
CN=Cash Buyer Media, O=Cash Buyer Media, L=San Francisco, S=California, C=US

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:
16225050F02F98DCFD5828F7D2C7CD45

File PE Metadata
Compilation timestamp:
1/29/2015 12:05:11 PM

OS version:
5.1

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
10.0

CTPH (ssdeep):
12288:b4BS2ly9NKPRdegPsgQr/745jezvROTVo80d1WU1ntTxJ10gJ1TvzIF:bhhKeiHQr/s1uRCBQWMxDpIF

Entry address:
0x234A

Entry point:
81, EC, 80, 01, 00, 00, 53, 55, 56, 33, DB, 57, 89, 5C, 24, 18, C7, 44, 24, 10, 78, 73, 40, 00, 33, F6, C6, 44, 24, 14, 20, E8, F8, FD, FF, FF, FF, 15, 30, 77, 40, 00, 68, 01, 80, 00, 00, FF, 15, C0, 70, 40, 00, 53, FF, 15, 2C, 77, 40, 00, 6A, 08, A3, 98, 3D, 42, 00, E8, DD, F9, FF, FF, 53, 68, 60, 01, 00, 00, A3, A0, 3C, 42, 00, 8D, 44, 24, 38, 50, 53, 68, 0B, 74, 40, 00, FF, 15, 50, 71, 40, 00, 68, 00, 74, 40, 00, 68, A0, 34, 42, 00, E8, 5A, F3, FF, FF, FF, 15, BC, 70, 40, 00, 50, BF, 00, 90, 42, 00, 57...
 
[+]

Entropy:
7.9733

Packer / compiler:
Nullsoft install system v2.x

Code size:
23 KB (23,552 bytes)

The file netdownloader.exe has been seen being distributed by the following 2 URLs.

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