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calibre setup.exe

Calibre 2016

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 calibre setup.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. It is also typically executed from an Internet Explorer cache folder. The file has been seen being downloaded from software.softwarerotate5.com.
Publisher:
Download Assistant  (signed and verified)

Product:
Calibre 2016

Version:
3.0.0.156

MD5:
e14e8fc29aa32866cb3d37e316ee84bd

SHA-1:
92b42baeb65c5ca498df12385c43cf638396fe04

SHA-256:
3b324bc0a557438ad54699458a052591e186249733644ac672cc7266a92de752

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:
11/15/2024 12:08:42 PM UTC  (today)

Scan engine
Detection
Engine version

Reason Heuristics
PUP.Air Software.Download.Bundler (M)
16.5.23.1

File size:
1.1 MB (1,137,664 bytes)

Product version:
3.0.0.156

Copyright:
(c) Download Assistant

File type:
Executable application (Win32 EXE)

Bundler/Installer:
AirInstaller Download Manager

Language:
Language Neutral

Common path:
C:\users\{user}\appdata\local\microsoft\windows\temporary internet files\content.ie5\{random}\calibre%20setup.exe

Digital Signature
Signed by:
Download Assistant

Authority:
Symantec Corporation

Valid from:
5/3/2016 3:00:00 AM

Valid to:
8/2/2017 2:59:59 AM

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:
088066A3A015128F544F3E16DC53BCE8

File PE Metadata
Compilation timestamp:
1/30/2013 5:21:56 PM

OS version:
5.0

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
2.25

CTPH (ssdeep):
24576:FxGn8JIBCsMYVMfG670PRjs4qgAu66/jfEJakB:ekIBCFeZPRjtpt7EJakB

Entry address:
0x113BC

Entry point:
55, 8B, EC, 83, C4, A4, 53, 56, 57, 33, C0, 89, 45, C4, 89, 45, C0, 89, 45, A4, 89, 45, D0, 89, 45, C8, 89, 45, CC, 89, 45, D4, 89, 45, D8, 89, 45, EC, B8, 2C, 00, 41, 00, E8, E8, 51, FF, FF, 33, C0, 55, 68, 9E, 1A, 41, 00, 64, FF, 30, 64, 89, 20, 33, D2, 55, 68, 5A, 1A, 41, 00, 64, FF, 32, 64, 89, 22, A1, 48, 5B, 41, 00, E8, 16, D8, FF, FF, E8, 65, D3, FF, FF, 80, 3D, DC, 2A, 41, 00, 00, 74, 0C, E8, 2B, D9, FF, FF, 33, C0, E8, 80, 32, FF, FF, 8D, 55, EC, 33, C0, E8, E2, A3, FF, FF, 8B, 55, EC, B8, 50, 86...
 
[+]

Entropy:
6.9620

Developed / compiled with:
Microsoft Visual C++

Code size:
65.5 KB (67,072 bytes)

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

http://software.softwarerotate5.com/v2/click/528c96da/?affiliate_image=http://www.softwaredownloadr.com/.../callofduty40.png&cancel_url=&d=http://cdn.downloadfree2.com/software/callofduty.exe&done_url=&filename=Calibre Setup&key=098c408c300f5042cda80b64be90fdbf8073e1e52854e343bc0155c44fa357d6&n=Calibre 2016&product_image=http://www.softwaredownloadr.com/.../callofduty85.png&sid=SoftwareDownloadr-Y-USA-callofduty-&uid=&uao=TW96aWxsYS81LjAgKFdpbmRvd3MgTlQgNi4xKSBBcHBsZVdlYktpdC81MzcuMzYgKEtIVE1MLCBsaWtlIEdlY2tvKSBDaHJvbWUvNTAuMC4yNjYxLjEwMiBTYWZhcmkvNTM3LjM2&scid=a0acb0c0-1f8f-11e6-84e0-0401ac007701

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