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mahjong_setup.exe

Mahjong

Air Software

This is part of the Air Installer, a download manager which bundles applications with offers for additional 3rd party software, mostly unwanted adware, and may be installed with minimal consent. The application mahjong_setup.exe by Air Software has been detected as adware by 23 anti-malware scanners. The program is a setup application that uses the AirInstaller Download Manager installer. The file has been seen being downloaded from files.trustydownloads.com.
Publisher:
AirInstaller Inc.  (signed by Air Software)

Product:
Mahjong

Version:
2.0.4.0

MD5:
9ca1991d171f793cb93c0edbbc37ee6e

SHA-1:
78c51474ee4fbd9686e734199a0833fad189e001

SHA-256:
9292025743e2e11a559936a93c6013a220e2f784017302bfa79cfea1d12ee4e3

Scanner detections:
23 / 68

Status:
Adware

Description:
This is an installer which may bundle legitimate applications with offers for additional 3rd-party applications that may be unwanted by the user. While the installer contains an 'opt-out' feature this is not set be defult and is usually overlooked.

Analysis date:
11/2/2024 1:37:36 PM UTC  (today)

Scan engine
Detection
Engine version

Agnitum Outpost
PUA.Toolbar.Agent
7.1.1

Avira AntiVirus
Adware/Airinstall.J
7.11.147.238

avast!
Win32:PUP-gen [PUP]
2014.9-140806

AVG
Generic_r
2015.0.3390

Comodo Security
Application.Win32.Agent.AJ
18229

Dr.Web
Trojan.SMSSend.4232
9.0.1.0218

ESET NOD32
Win32/AirAdInstaller.A potentially unwanted application
8.7.0.302.0

F-Prot
W32/AirInstall.A.gen
v6.4.6.5.141

G Data
Win32.Adware.Airadinstaller
14.8.24

herdProtect (fuzzy)
variant of flashupgrade.exe (Adware)
2014.9.28.1

IKARUS anti.virus
not-a-virus:WebToolbar.Win32.Agent
t3scan.1.6.1.0

K7 AntiVirus
Unwanted-Program
13.177.11997

Kaspersky
not-a-virus:AdWare.Win32.AirAdInstaller
14.0.0.3441

NANO AntiVirus
Trojan.Win32.SMSSend.cwbmjp
0.28.0.59608

nProtect
Trojan-Clicker/W32.Agent.1114024
14.08.21.01

Panda Antivirus
Adware/AirInstaller
14.08.06.07

Qihoo 360 Security
Malware.QVM01.Gen
1.0.0.1015

Quick Heal
Adware.AirAdInstaller.C5
8.14.14.00

Reason Heuristics
DownloadManager.AirSoftware.N
14.8.7.18

Rising Antivirus
PE:PUF.Airinstall!1.9C4C
23.00.65.14804

Sophos
AirInstaller
4.98

VIPRE Antivirus
AirInstaller
28930

Zillya! Antivirus
Adware.Agent.Win32.9107
2.0.0.1779

File size:
1.1 MB (1,114,016 bytes)

Product version:
2.0.4.0

Copyright:
(c) AirInstaller. All rights reserved.

Original file name:
AirInstaller.exe

File type:
Executable application (Win32 EXE)

Bundler/Installer:
AirInstaller Download Manager

Language:
English (United States)

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

Digital Signature
Signed by:
Air Software

Authority:
VeriSign, Inc.

Valid from:
1/24/2013 6:00:00 PM

Valid to:
3/26/2015 6:59:59 PM

Subject:
CN=Air Software, OU=Digital ID Class 3 - Microsoft Software Validation v2, O=Air Software, L=Victoria, S=British Columbia, C=CA

Issuer:
CN=VeriSign Class 3 Code Signing 2010 CA, OU=Terms of use at https://www.verisign.com/rpa (c)10, OU=VeriSign Trust Network, O="VeriSign, Inc.", C=US

Serial number:
3AC786E09219DF82DA830E461D4FC39F

File PE Metadata
Compilation timestamp:
6/19/2013 11:48:52 AM

OS version:
5.1

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
10.0

CTPH (ssdeep):
24576:aoqBJMLHYCDly/JxJ90gvRyvbCuAaqmHogrhZxkpzDJEmvfojy91O:aarYVRxJ9bvobCunogt81DJjwv

Entry address:
0x24F7B0

Entry point:
60, BE, 00, 40, 54, 00, 8D, BE, 00, D0, EB, FF, 57, 83, CD, FF, EB, 10, 90, 90, 90, 90, 90, 90, 8A, 06, 46, 88, 07, 47, 01, DB, 75, 07, 8B, 1E, 83, EE, FC, 11, DB, 72, ED, B8, 01, 00, 00, 00, 01, DB, 75, 07, 8B, 1E, 83, EE, FC, 11, DB, 11, C0, 01, DB, 73, EF, 75, 09, 8B, 1E, 83, EE, FC, 11, DB, 73, E4, 31, C9, 83, E8, 03, 72, 0D, C1, E0, 08, 8A, 06, 46, 83, F0, FF, 74, 74, 89, C5, 01, DB, 75, 07, 8B, 1E, 83, EE, FC, 11, DB, 11, C9, 01, DB, 75, 07, 8B, 1E, 83, EE, FC, 11, DB, 11, C9, 75, 20, 41, 01, DB, 75...
 
[+]

Entropy:
7.7643

Packer / compiler:
UPX 2.90LZMA

Code size:
1 MB (1,097,728 bytes)

The file mahjong_setup.exe has been seen being distributed by the following URL.

http://files.trustydownloads.com/get/click/.../?filename=Mahjong_Setup

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