microsoft-office-visio-professional-2013.exe

SILICOM INTERNET, S.L.

The installer utilizes the installCore download manager which may bundle additional offers for various ad-supported toolbars, extensions and utilities. The application microsoft-office-visio-professional-2013.exe by SILICOM INTERNET, S.L 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 installCore installer. The file has been seen being downloaded from installm.net.
Publisher:
SILICOM INTERNET, S.L.  (signed and verified)

MD5:
4741fb160c6a0fa31d065187c5b50317

SHA-1:
9d55ee5ff1aec8f8c5dc4f5f6c8b53ee626ca2ef

SHA-256:
398311f2f839141d154e378d7450ec1f95942c6c4776dfbdc9513eb8243a0f59

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:
8/18/2018 11:03:17 AM UTC  (today)

Scan engine
Detection
Engine version

Reason Heuristics
PUP.installCore.SILICOMI (M)
16.5.31.12

File size:
671.8 KB (687,952 bytes)

File type:
Executable application (Win32 EXE)

Bundler/Installer:
installCore (using Inno Setup)

Common path:
C:\users\{user}\downloads\microsoft-office-visio-professional-2013.exe

Digital Signature
Authority:
DigiCert Inc

Valid from:
10/25/2013 3:00:00 AM

Valid to:
10/29/2014 2:00:00 PM

Subject:
CN="SILICOM INTERNET, S.L.", O="SILICOM INTERNET, S.L.", L=Villaviciosa de Odon, C=ES

Issuer:
CN=DigiCert Assured ID Code Signing CA-1, OU=www.digicert.com, O=DigiCert Inc, C=US

Serial number:
06C80396B3808BBD5B05A86D48465401

File PE Metadata
Compilation timestamp:
6/20/1992 1:22:17 AM

OS version:
1.0

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
2.25

CTPH (ssdeep):
12288:QQFpLUOMDcxaJMDc2n6smSG65o+hfBMArGEAeA6E8bU/rY9E1xJ:QQFRUOycxaK4STq+NTA4Ivb

Entry address:
0x9C40

Entry point:
55, 8B, EC, 83, C4, C4, 53, 56, 57, 33, C0, 89, 45, F0, 89, 45, DC, E8, 86, 94, FF, FF, E8, 8D, A6, FF, FF, E8, 1C, A9, FF, FF, E8, 53, C9, FF, FF, E8, 9A, C9, FF, FF, E8, C9, F2, FF, FF, E8, 30, F4, FF, FF, 33, C0, 55, 68, FC, A2, 40, 00, 64, FF, 30, 64, 89, 20, 33, D2, 55, 68, C5, A2, 40, 00, 64, FF, 32, 64, 89, 22, A1, 14, C0, 40, 00, E8, 96, FE, FF, FF, E8, C9, FA, FF, FF, 8D, 55, F0, 33, C0, E8, 83, CF, FF, FF, 8B, 55, F0, B8, 24, CE, 40, 00, E8, 32, 95, FF, FF, 6A, 02, 6A, 00, 6A, 01, 8B, 0D, 24, CE...
 
[+]

Entropy:
7.8442

Packer / compiler:
Inno Setup v5.x - Installer Maker

Code size:
37 KB (37,888 bytes)

The file microsoft-office-visio-professional-2013.exe has been seen being distributed by the following URL.

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