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irsformw4-setup.exe

Web Install

This installer uses the CNET Download.com download manager (private label) in order to provide monetized offerings to end users. These offers could include ad-supported toolbars or various web browser extensions. The application irsformw4-setup.exe by Web Install has been detected as adware by 11 anti-malware scanners. The program is a setup application that uses the DownloadCom Spot Install installer. The file has been seen being downloaded from dw.cbsi.com.
Publisher:
Web Install  (signed and verified)

MD5:
9f387ab5be5a8659d4171e41e18e6127

SHA-1:
a0b5900be84868b73482e252dc020abd25bf3d1d

SHA-256:
921a5c3b626f7f9d43515d7dc5313e29ce712eeaeae13d7954e6ec3c49516200

Scanner detections:
11 / 68

Status:
Adware

Description:
This 'download manager' is also considered bundleware, a utility designed to download software (possibly legitimate or opensource) and bundle it with a number of optional offers including ad-supported utilities, toolbars, shopping comparison tools and browser extensions.

Analysis date:
4/19/2024 6:51:30 PM UTC  (today)

Scan engine
Detection
Engine version

Agnitum Outpost
PUA.Downware
7.1.1

avast!
Win32:Adware-BGE [PUP]
2014.9-150410

Bkav FE
W32.HfsAdware
1.3.0.6379

Clam AntiVirus
Win.Adware.Agent-6650
0.98/19265

Dr.Web
Adware.Downware.1159
9.0.1.0100

ESET NOD32
Win32/DownloadAdmin
9.9765

herdProtect (fuzzy)
variant of klitecodecpackfull-setup.exe (Adware)
2015.7.12.22

K7 AntiVirus
Trojan
13.202.15544

NANO AntiVirus
Riskware.Win32.Downware.crgjbr
0.28.0.59608

Reason Heuristics
Threat.CBS.Bundler
15.4.10.1

VIPRE Antivirus
WebInstall
28926

File size:
640.8 KB (656,200 bytes)

File type:
Executable application (Win32 EXE)

Bundler/Installer:
DownloadCom Spot Install (using Nullsoft Install System)

Language:
Language Neutral

Common path:
C:\users\{user}\downloads\irsformw4-setup.exe

Digital Signature
Signed by:
Web Install

Authority:
VeriSign, Inc.

Valid from:
3/19/2013 5:00:00 PM

Valid to:
3/19/2016 4:59:59 PM

Subject:
CN=Web Install, OU=Digital ID Class 3 - Microsoft Software Validation v2, O=Web Install, 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:
6F93708E2A9DB00DA7666A9EA9A5FA00

File PE Metadata
Compilation timestamp:
6/22/2012 11:07:51 AM

OS version:
5.1

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
10.0

CTPH (ssdeep):
12288:xXNRmR4TUPiaOP/SYG25CHFpJfMwp71q4OVNx6fRWH5GuW:xX44UDOS20vtMwZ1BENx8WZI

Entry address:
0x333B

Entry point:
81, EC, 80, 01, 00, 00, 53, 55, 56, 33, DB, 57, 89, 5C, 24, 18, C7, 44, 24, 10, B0, 73, 40, 00, 33, F6, C6, 44, 24, 14, 20, FF, 15, 30, 70, 40, 00, 68, 01, 80, 00, 00, FF, 15, C0, 70, 40, 00, 53, FF, 15, 88, 72, 40, 00, 6A, 08, A3, B8, 3C, 42, 00, E8, 2C, 25, 00, 00, 53, 68, 60, 01, 00, 00, A3, C0, 3B, 42, 00, 8D, 44, 24, 38, 50, 53, 68, 43, 74, 40, 00, FF, 15, 64, 71, 40, 00, 68, 38, 74, 40, 00, 68, C0, 33, 42, 00, E8, 1D, 24, 00, 00, FF, 15, BC, 70, 40, 00, 50, BF, 00, 90, 42, 00, 57, E8, 0B, 24, 00, 00...
 
[+]

Entropy:
7.9445

Packer / compiler:
Nullsoft install system v2.x

Code size:
23 KB (23,552 bytes)

The file irsformw4-setup.exe has been seen being distributed by the following URL.

http://dw.cbsi.com/redir?ttag=download_now_button_click&lop=link&ptid=3028&pagetype=product_detail_sem&asid=&astid=2&edid=3&siteid=4&destUrl=http://files5.open-serve.info/.../taxes-accounting&topicbrcrm=windows software&pid=13943086&mfgid=6314332&merid=6314332&ctype=dm&cval=SPIGOTWIN&ltype=dl_dlnow&spi=c2acc6b0977422c63eac408fe972b384&devicetype=desktop&pguid=7b3d3cde539b91e4aead98df&viewguid=SLSgbStQwxJbUO5fdU6ehb6MHgKWSvnJNNZb

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