mahjongworld-setup.exe

Tightrope Interactive, Inc.

This is the Tightrope WebInstall which bundles applications with offers for additional 3rd party software, mostly unwanted adware, and may be installed with minimal consent. The application mahjongworld-setup.exe by Tightrope Interactive 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 Tightrope WebInstall installer.
Publisher:
Tightrope Interactive, Inc.  (signed and verified)

MD5:
d95fb95a483c7be691f64f6a516b2cf0

SHA-1:
372f65c09081235b6225c3fd505bc362e605311f

SHA-256:
fc0eb61f910dc81b27dfa1ddab52bd4440f40ce1c83829370c8e314b41886ad9

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 '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:
5/27/2020 8:10:36 AM UTC  (today)

Scan engine
Detection
Engine version

Reason Heuristics
PUP.Tightrope (M)
16.12.30.17

File size:
75.6 MB (79,312,296 bytes)

File type:
Executable application (Win32 EXE)

Bundler/Installer:
Tightrope WebInstall (using Nullsoft Install System)

Language:
Language Neutral

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

Digital Signature
Authority:
COMODO CA Limited

Valid from:
12/4/2014 7:00:00 PM

Valid to:
12/5/2015 6:59:59 PM

Subject:
CN="Tightrope Interactive, Inc.", O="Tightrope Interactive, Inc.", STREET="588 SUTTER STREET, #551", L=SAN FRANCISCO, S=CA, PostalCode=94102, C=US

Issuer:
CN=COMODO RSA Code Signing CA, O=COMODO CA Limited, L=Salford, S=Greater Manchester, C=GB

Serial number:
00E0C39AC4896BD4B14524E20D3BF712FA

File PE Metadata
Compilation timestamp:
1/29/2015 1:35:11 AM

OS version:
5.1

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
10.0

Entry address:
0x234A

Entry point:
81, EC, 80, 01, 00, 00, 53, 55, 56, 33, DB, 57, 89, 5C, 24, 18, C7, 44, 24, 10, 78, 73, 40, 00, 33, F6, C6, 44, 24, 14, 20, E8, F8, FD, FF, FF, FF, 15, 30, 77, 40, 00, 68, 01, 80, 00, 00, FF, 15, C0, 70, 40, 00, 53, FF, 15, 2C, 77, 40, 00, 6A, 08, A3, 98, 3D, 42, 00, E8, DD, F9, FF, FF, 53, 68, 60, 01, 00, 00, A3, A0, 3C, 42, 00, 8D, 44, 24, 38, 50, 53, 68, 0B, 74, 40, 00, FF, 15, 50, 71, 40, 00, 68, 00, 74, 40, 00, 68, A0, 34, 42, 00, E8, 5A, F3, FF, FF, FF, 15, BC, 70, 40, 00, 50, BF, 00, 90, 42, 00, 57...
 
[+]

Entropy:
0.1352

Packer / compiler:
Nullsoft install system v2.x

Code size:
23 KB (23,552 bytes)

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