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setup_winrar_64bit.exe

WinRAR (64-bit)

Download Assistant

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 setup_winrar_64bit.exe by Download Assistant 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 AirInstaller Download Manager installer. The installer is marketed through download protals and search ads as WinRAR archiver but will also install additional software offers which include adware, PUPs and browser toolbars.
Publisher:
Download Assistant  (signed and verified)

Product:
WinRAR (64-bit)

Version:
3.0.0.88

MD5:
19de8f5ee7dc841f48a5d3131ddc97e6

SHA-1:
90686864713d8cd70f867d36d098da0384f1b20b

SHA-256:
8114fd10580c20e270e3304e98494c0e46dfc555185f167eb4a7b54b2144074d

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 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:
1/13/2025 12:43:27 AM UTC  (today)

Scan engine
Detection
Engine version

Reason Heuristics
PUP.Air Software.Download.Bundler (M)
16.4.19.8

File size:
845.2 KB (865,456 bytes)

Product version:
3.0.0.88

Copyright:
(c) Download Assistant

Original file name:
setup_winrar_64bit.exe

File type:
Executable application (Win32 EXE)

Bundler/Installer:
AirInstaller Download Manager

Language:
English (United States)

Common path:
C:\users\{user}\downloads\setup_winrar_64bit.exe

Digital Signature
Signed by:
Download Assistant

Authority:
Symantec Corporation

Valid from:
2/15/2015 6:00:00 PM

Valid to:
2/16/2016 5:59:59 PM

Subject:
CN=Download Assistant, O=Download Assistant, L=Victoria, S=British Columbia, C=CA

Issuer:
CN=Symantec Class 3 SHA256 Code Signing CA, OU=Symantec Trust Network, O=Symantec Corporation, C=US

Serial number:
3784E4CAC60231ED82FD7E8E845E8CE3

File PE Metadata
Compilation timestamp:
3/21/2015 11:36:08 PM

OS version:
5.1

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
10.0

CTPH (ssdeep):
24576:hfXOloMPBAxSTYGF6sIBLgl30MQnaxmB3be:clC0Tr6nBLTaoB3be

Entry address:
0x126A

Entry point:
55, 8B, EC, 83, EC, 10, 53, 56, 57, 6A, 00, FF, 15, 08, 90, 47, 00, 8B, F8, 33, D2, 8B, CF, 8B, 5F, 3C, 03, DF, 2B, 05, 1C, 10, 40, 00, 89, 45, F4, 1B, D2, F7, D8, 89, 55, F8, 0F, B7, 73, 14, 83, D2, 00, F7, DA, 89, 75, F0, 52, 8B, 93, A0, 00, 00, 00, 50, 8B, 44, 1E, 24, 03, 05, 28, 10, 40, 00, 50, FF, B3, A4, 00, 00, 00, E8, 88, FD, FF, FF, 8B, 54, 1E, 28, 83, C4, 10, A1, 28, 10, 40, 00, 2B, D0, 83, FA, 01, 76, 0D, 8B, 4C, 1E, 24, 03, C8, 03, CF, E8, F2, FE, FF, FF, A1, 20, 10, 40, 00, 83, C6, 40, 03, F3...
 
[+]

Entropy:
7.0589

Developed / compiled with:
Microsoft Visual C++

Code size:
478.5 KB (489,984 bytes)

The file setup_winrar_64bit.exe has been seen being distributed by the following URL.

http://files.1download.io/.../download_winrar_64bit_5-21.php?tr=b&flag=us&cid=1837542408.1426998973&prd=

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