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avast_installer.exe

One Installer LLC

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 avast_installer.exe by One Installer has been detected as adware by 1 anti-malware scanner with very strong indications that the file is a potential threat. The program is a setup application that uses the Vittalia DM installer. The installer is marketed through download protals and search ads as the free AVAST Antivirus but will also install additional software offers which include adware, PUPs and browser toolbars.
Publisher:
One Installer LLC  (signed and verified)

MD5:
3f07756efa434609b7162d4d30b7d954

SHA-1:
a13161bb1013ea301299da1fbc2533d7d794e508

SHA-256:
1a4372136e3abe5a763784658d559556f0db3521d87a26d8f3e14336979f7363

Scanner detections:
1 / 68

Status:
Adware

Note:
Our current pool of anti-malware engines have not currently detected this file, however based on our own detection heuristics we feel that this file is unwanted.

Description:
This is an installer which may bundle legitimate applications with offers for additional 3rd-party applications that may be unwanted by the user. While the installer contains an 'opt-out' feature this is not set be defult and is usually overlooked.

Analysis date:
4/25/2024 11:36:58 AM UTC  (today)

Scan engine
Detection
Engine version

Reason Heuristics
PUP.OneInstaller.S
14.8.7.21

File size:
2.3 MB (2,382,352 bytes)

File type:
Executable application (Win32 EXE)

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

Common path:
C:\users\{user}\downloads\avast_installer.exe

Digital Signature
Signed by:
One Installer LLC

Authority:
GoDaddy.com, Inc.

Valid from:
3/7/2013 3:31:55 PM

Valid to:
1/31/2014 8:35:46 PM

Subject:
CN=One Installer LLC, O=One Installer LLC, L=Wilmington, S=DE, C=US

Issuer:
SERIALNUMBER=07969287, CN=Go Daddy Secure Certification Authority, OU=http://certificates.godaddy.com/repository, O="GoDaddy.com, Inc.", L=Scottsdale, S=Arizona, C=US

Serial number:
07A1FF233E22C3

File PE Metadata
Compilation timestamp:
12/5/2009 11:50:52 PM

OS version:
4.0

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
6.0

CTPH (ssdeep):
49152:MnBqJwFkuVAcYOtImBruXHKFmtxHlXkn2GN3mWJBeyPX3z:MnBq6pAcY4xEXHKgFXkn2GN2WJVr

Entry address:
0x30FA

Entry point:
81, EC, 80, 01, 00, 00, 53, 55, 56, 33, DB, 57, 89, 5C, 24, 18, C7, 44, 24, 10, 60, 91, 40, 00, 33, F6, C6, 44, 24, 14, 20, FF, 15, 30, 70, 40, 00, 68, 01, 80, 00, 00, FF, 15, B0, 70, 40, 00, 53, FF, 15, 7C, 72, 40, 00, 6A, 08, A3, 18, EC, 42, 00, E8, F1, 2B, 00, 00, A3, 64, EB, 42, 00, 53, 8D, 44, 24, 34, 68, 60, 01, 00, 00, 50, 53, 68, 98, 8F, 42, 00, FF, 15, 58, 71, 40, 00, 68, 54, 91, 40, 00, 68, 60, E3, 42, 00, E8, A4, 28, 00, 00, FF, 15, AC, 70, 40, 00, BF, 00, 40, 43, 00, 50, 57, E8, 92, 28, 00, 00...
 
[+]

Packer / compiler:
Nullsoft install system v2.x

Code size:
23.5 KB (24,064 bytes)

The file avast_installer.exe has been seen being distributed by the following URL.

http://avast.begin.pro/.../down.php?p=ES-SOFT

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