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quizscope.exe

QuizScope Installer

QuizScope

The application quizscope.exe by QuizScope has been detected as a potentially unwanted program 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 NSIS (Nullsoft Scriptable Install System) 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. The file has been seen being downloaded from d1.quizscope.com and multiple other hosts.
Publisher:
QuizScope  (signed and verified)

Product:
QuizScope Installer

Version:
4.0.4504.0

MD5:
4c76614b950e7bc00cd32e7d60a66c5e

SHA-1:
6fbfd12412ed52442e4b75176886406752fcc300

SHA-256:
3a902d058efc72ed15502e7d7fe0bb901aa2d95962bd2df881f531ceb73382d6

Scanner detections:
1 / 68

Status:
Potentially unwanted

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

Analysis date:
5/20/2024 11:03:57 PM UTC  (a few moments ago)

Scan engine
Detection
Engine version

Reason Heuristics
PUP.OutBrowse (M)
16.7.21.9

File size:
272.5 KB (279,016 bytes)

Product version:
4.0.4504.0

Copyright:
Copyright (C) 2015

File type:
Executable application (Win32 EXE)

Installer:
NSIS (Nullsoft Scriptable Install System)

Language:
English (United States)

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

Digital Signature
Signed by:
QuizScope

Authority:
thawte, Inc.

Valid from:
9/8/2015 8:00:00 PM

Valid to:
9/8/2016 7:59:59 PM

Subject:
CN=QuizScope, O=QuizScope, L=Irvine, S=California, C=US

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

Serial number:
6334CF32E921A4E1CD4C0C18E1CEBE72

File PE Metadata
Compilation timestamp:
12/5/2009 5:50:46 PM

OS version:
4.0

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
6.0

CTPH (ssdeep):
6144:Bs9B+dX08rJqkEV2dw7Gpt7pvRmqVTrXJTJaA1VBex3RS3DIEo:+B8zdqkEV2UGptdZpVJJBVUxITe

Entry address:
0x323C

Entry point:
81, EC, 80, 01, 00, 00, 53, 55, 56, 33, DB, 57, 89, 5C, 24, 18, C7, 44, 24, 10, 30, 91, 40, 00, 33, F6, C6, 44, 24, 14, 20, FF, 15, 30, 70, 40, 00, 68, 01, 80, 00, 00, FF, 15, B4, 70, 40, 00, 53, FF, 15, 7C, 72, 40, 00, 6A, 08, A3, 58, 3F, 42, 00, E8, 09, 2C, 00, 00, A3, A4, 3E, 42, 00, 53, 8D, 44, 24, 34, 68, 60, 01, 00, 00, 50, 53, 68, 58, F4, 41, 00, FF, 15, 58, 71, 40, 00, 68, B8, 91, 40, 00, 68, A0, 36, 42, 00, E8, BC, 28, 00, 00, FF, 15, B0, 70, 40, 00, BF, 00, 90, 42, 00, 50, 57, E8, AA, 28, 00, 00...
 
[+]

Entropy:
7.9129

Packer / compiler:
Nullsoft install system v2.x

Code size:
23 KB (23,552 bytes)

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

http://d1.quizscope.com/.../getclient.php?gcl=OTMzNDQ0NDM4MduhRSoNtLPD3f4iCD/bYLOrQ9ErRp3E5AXUWuYthw+zI3SJRGvEoO7qYidlHlItA5eynFZv78+k5Jks8H7ry/yqoUZS6CmE8aNtY+CDHHlu8DvYhx6x6jrkFBy2ZHYu3OlM/iCI+Wvq

http://d1.quizscope.com/qscope/getclient.php?gcl=OTMzNDQ0NDM4MduhRSoNtLPD3f4iCD/bYLOrQ9ErRp3E5AXUWuYthw zI3SJRGvEoO7qYidlHlItA5eynFZv78 k5Jks8H7ry/.../iCI Wvq

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