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mahjonggartifacts-setup.exe

Download Admin

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 mahjonggartifacts-setup.exe by Download Admin has been detected as adware by 12 anti-malware scanners. The program is a setup application that uses the Tightrope WebInstall installer. The file has been seen being downloaded from files4.playfin.com and multiple other hosts.
Publisher:
Download Admin  (signed and verified)

MD5:
a96c5c071174fb2aca045d2f5133e996

SHA-1:
df774cfbf19a22e89cdb780057c16820e3191de2

SHA-256:
ac8ed25e1cb31d892df64c64de587f9410badb0d9e251935b072ae2ffdf6f460

Scanner detections:
12 / 68

Status:
Adware

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:
5/5/2024 7:29:00 AM UTC  (today)

Scan engine
Detection
Engine version

Avira AntiVirus
ADWARE/Adware.Gen9
7.11.165.138

Clam AntiVirus
Win.Adware.Agent-6650
0.98/19265

Dr.Web
Adware.Downware.2220
9.0.1.0218

ESET NOD32
Win32/DownloadAdmin
8.9647

F-Secure
Adware:W32/WebInstallBundle
11.2014-06-08_4

herdProtect (fuzzy)
variant of vlcmediaplayer-setup.exe (Adware)
2014.9.27.22

Malwarebytes
PUP.Optional.DownloadAdmin
v2014.08.06.06

NANO AntiVirus
Trojan.Win32.Downware.crgjbr
0.28.0.59048

Reason Heuristics
PUP.Installer.DownloadAdmin.X
14.8.7.20

Sophos
Download Admin
4.98

SUPERAntiSpyware
Trojan.Agent/Gen-Downloader
10437

VIPRE Antivirus
DownloadAdmin
28115

File size:
738.9 KB (756,616 bytes)

File type:
Executable application (Win32 EXE)

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

Language:
Language Neutral

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

Digital Signature
Signed by:
Download Admin

Authority:
VeriSign, Inc.

Valid from:
4/2/2010 7:00:00 PM

Valid to:
5/29/2013 6:59:59 PM

Subject:
CN=Download Admin, OU=Digital ID Class 3 - Microsoft Software Validation v2, O=Download Admin, L=San Francisco, S=California, C=US

Issuer:
CN=VeriSign Class 3 Code Signing 2009-2 CA, OU=Terms of use at https://www.verisign.com/rpa (c)09, OU=VeriSign Trust Network, O="VeriSign, Inc.", C=US

Serial number:
29529B0D185F8525A92A866D4A38DA3A

File PE Metadata
Compilation timestamp:
6/22/2012 1:07:51 PM

OS version:
5.1

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
10.0

CTPH (ssdeep):
12288:WxpJTRe2ox2XK8arRJjOvsWRBsu1ZZKPrqLELFQvCU/D5e:ipNR9ox2NErSNCPrXQaUb5e

Entry address:
0x333B

Entry point:
81, EC, 80, 01, 00, 00, 53, 55, 56, 33, DB, 57, 89, 5C, 24, 18, C7, 44, 24, 10, B0, 73, 40, 00, 33, F6, C6, 44, 24, 14, 20, FF, 15, 30, 70, 40, 00, 68, 01, 80, 00, 00, FF, 15, C0, 70, 40, 00, 53, FF, 15, 88, 72, 40, 00, 6A, 08, A3, B8, 3C, 42, 00, E8, 2C, 25, 00, 00, 53, 68, 60, 01, 00, 00, A3, C0, 3B, 42, 00, 8D, 44, 24, 38, 50, 53, 68, 43, 74, 40, 00, FF, 15, 64, 71, 40, 00, 68, 38, 74, 40, 00, 68, C0, 33, 42, 00, E8, 1D, 24, 00, 00, FF, 15, BC, 70, 40, 00, 50, BF, 00, 90, 42, 00, 57, E8, 0B, 24, 00, 00...
 
[+]

Entropy:
7.4069

Packer / compiler:
Nullsoft install system v2.x

Code size:
23 KB (23,552 bytes)

The file mahjonggartifacts-setup.exe has been seen being distributed by the following 4 URLs.

http://files4.playfin.com/download?s=msn&c=playfin_dynamic&variation=TB10493&brand=playfin.com&pid=TR&bc=674001&country=US&cb=-458216689

http://files4.playfin.com/download?s=msn&c=playfin_dynamic&variation=TB10493&brand=playfin.com&pid=TR&bc=674001&country=US&cb=-1935244733

http://files5.playfin.com/dl?bc=674001&geo=&&geo

https://games.playfin.com/secure_download.php?bc=674001&geo

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