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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.softwarerotate4.com.
Publisher:
Download Assistant  (signed and verified)

Product:
Calibre 2016

Version:
3.0.0.156

MD5:
de42f632de04dc0f5efbeeba569b14f9

SHA-1:
720ae5b164858625acdd3f3a6e9b9fe5db1a0496

SHA-256:
98d7e3e056e1de83f8210072c9ac422767cb5f3f293a066bdbd68ceea420b427

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:
11/15/2024 10:25:25 AM UTC  (today)

Scan engine
Detection
Engine version

Reason Heuristics
PUP.Air Software.Download.Bundler (M)
16.5.27.21

File size:
1.1 MB (1,144,376 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 setup.exe

Digital Signature
Signed by:
Download Assistant

Authority:
Symantec Corporation

Valid from:
5/2/2016 7:00:00 PM

Valid to:
8/1/2017 6:59:59 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:
088066A3A015128F544F3E16DC53BCE8

File PE Metadata
Compilation timestamp:
1/30/2013 8:21:56 AM

OS version:
5.0

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
2.25

CTPH (ssdeep):
24576:XxGnSivm1hHW3rDolq2MHkzIo6FXfognWOwZsEJakK:gN4HIKqN1o6p5WO7EJakK

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:
6.9716

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.softwarerotate4.com/v2/click/bfvd2rty/?d=http://cdn.downloadfree2.com/software/callofduty.exe&key=098c408c300f5042cda80b64be90fdbf8073e1e52854e343bc0155c44fa357d6&sid=SoftwareDownloadr-Y-USA-callofduty-&uid=&affiliate_image=http://www.softwaredownloadr.com/.../callofduty40.png&product_image=http://www.softwaredownloadr.com/.../callofduty85.png&n=Calibre 2016&filename=Calibre Setup&done_url=&cancel_url=

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