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vroot.exe

otOpIa Soft

This is the OutBrowse Revenyou installer which bundles offers for additional third party applications that may be unwanted and installed without consent. The application vroot.exe by otOpIa Soft has been detected as adware by 5 anti-malware scanners. The program is a setup application that uses the OutBrowse Revenyou installer. According to AVG, this software downloads additional adware offers during setup.
Publisher:
KCPDK  (signed by otOpIa Soft)

Product:
KCPDK

Version:
9084.15527.837.8324

MD5:
555ef446f08e38e011965d5641fb190e

SHA-1:
31bf3867a990354054f6962b181e11fb3e001dce

SHA-256:
9fe657281bc3c5836d57642128f0355d1747b12070a13fdaee52b55f7c07da25

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:
2/25/2025 3:09:25 AM UTC  (today)

Scan engine
Detection
Engine version

AhnLab V3 Security
PUP/Win32.OutBrowse
2015.05.29

AVG
Downloader
2016.0.3095

ESET NOD32
Win32/OutBrowse.CE potentially unwanted application
7.0.302.0

Reason Heuristics
PUP.Outbrowse.Bundler
15.5.28.16

SUPERAntiSpyware
Adware.OutBrowse/Variant
9847

File size:
743.7 KB (761,544 bytes)

Product version:
9084.15527.837.8324

Copyright:
KCPDK

Trademarks:
KCPDK

File type:
Executable application (Win32 EXE)

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

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

Digital Signature
Signed by:
otOpIa Soft

Authority:
thawte, Inc.

Valid from:
5/26/2015 3:00:00 AM

Valid to:
12/18/2015 1:59:59 AM

Subject:
CN=otOpIa Soft, O=otOpIa Soft, L=Dublin, S=Dublin, C=IE

Issuer:
CN=thawte SHA256 Code Signing CA, O="thawte, Inc.", C=US

Serial number:
1BE027B843E848104AAC09658A6D1CA0

File PE Metadata
Compilation timestamp:
12/6/2009 12:52:12 AM

OS version:
4.0

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
6.0

CTPH (ssdeep):
12288:lfOR6swLtbNt8c4sjd2FIY0kzITl0wDVkYwZv2PBUGV0u9p1457qURmB7gfc8vyw:l6Abpjd2B0ewVJjVX9v45ugI186w

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, 1C, 45, 00, E8, F1, 2B, 00, 00, A3, 64, 1B, 45, 00, 53, 8D, 44, 24, 34, 68, 60, 01, 00, 00, 50, 53, 68, 98, 37, 43, 00, FF, 15, 58, 71, 40, 00, 68, 54, 91, 40, 00, 68, 60, DB, 44, 00, E8, A4, 28, 00, 00, FF, 15, AC, 70, 40, 00, BF, 00, A0, 47, 00, 50, 57, E8, 92, 28, 00, 00...
 
[+]

Entropy:
7.9778

Packer / compiler:
Nullsoft install system v2.x

Code size:
23.5 KB (24,064 bytes)

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