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microsoft-office.exe

Start Now

This is the OutBrowse Revenyou installer which bundles offers for additional third party applications that may be unwanted and installed without consent. The application microsoft-office.exe by Start Now has been detected as adware by 5 anti-malware scanners. The program is a setup application that uses the OutBrowse Revenyou installer. The setup routine uses the RevenYou.Com Pay Per Install platform (OutBrowse) which bundles additional software offers inclduing toolbars, extensions, PC utilities as well as other PUPs.
Publisher:
Start Now  (signed and verified)

MD5:
25b918b32e7172bddac2d49079b3166a

SHA-1:
b1629ac0ebd4e7230f112d2e7a423a2f990d3062

SHA-256:
487ea25ca9a5d381835e355290e9fc8a0bbf4a59634f5e202d35fe3c4e7b5276

Scanner detections:
5 / 68

Status:
Adware

Explanation:
Bundles additional adware offers during download and installation using the OutBrowse installer.

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:
4/20/2024 11:42:24 AM UTC  (today)

Scan engine
Detection
Engine version

AhnLab V3 Security
PUP/Win32.OutBrowse
2014.10.17

Avira AntiVirus
APPL/Downloader.Gen
7.11.179.12

ESET NOD32
Win32/OutBrowse.AY
8.10576

Malwarebytes
PUP.Optional.Outbrowse
v2014.10.16.08

Reason Heuristics
PUP.StartNow.Q
14.11.20.9

File size:
559.2 KB (572,656 bytes)

File type:
Executable application (Win32 EXE)

Bundler/Installer:
OutBrowse Revenyou (using Nullsoft Install System)

Language:
Language Neutral

Common path:
C:\users\{user}\downloads\microsoft-office.exe

Digital Signature
Signed by:
Start Now

Authority:
GlobalSign nv-sa

Valid from:
10/10/2014 10:45:55 AM

Valid to:
10/11/2015 10:45:55 AM

Subject:
CN=Start Now, O=Start Now, L=Dublin, C=IE

Issuer:
CN=GlobalSign CodeSigning CA - SHA256 - G2, O=GlobalSign nv-sa, C=BE

Serial number:
1121E62C7AAE5E56FB35260AD52F25921592

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

OS version:
4.0

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
6.0

CTPH (ssdeep):
12288:JbNgC50un8fesnwqZhEcH30TAEIP718Ri6oRKiUWtGoo:JpT8feHcX00EIRAi6oRKiUn

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...
 
[+]

Entropy:
7.9730

Packer / compiler:
Nullsoft install system v2.x

Code size:
23.5 KB (24,064 bytes)

The file microsoft-office.exe has been seen being distributed by the following URL.

http://www.download366.com/microsoft-office/download/.../bing

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