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skype.exe

FIRSERIA, S.L.

The setup program uses the Firseria/Solimba AppInstaller (DownloadMR) which is a monetization download manager that bundles additional adware offers, typically by wrapping legitimate applications. The application skype.exe by FIRSERIA, 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 Solimba DownloadMR installer. The installer uses the Solimba download manager to push adware offers during the download and setup process. Bundled adware includes search and shopping web browser toolbars.
Publisher:
Firseria   (signed by FIRSERIA, S.L.)

Description:
installer

Version:
1.0.0.11

MD5:
86a89f60c8ac40c34386fa78a9e84637

SHA-1:
eb757baac5ca06c35a519049be658a09c694141b

SHA-256:
11c10cd6a6b9a6140697a83e3f8ef86086662717b75e3ed494dca30bd8d1973c

Scanner detections:
1 / 68

Status:
Adware

Explanation:
Uses the Solimba installer to bundle adware offers.

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:
4/27/2024 3:32:23 PM UTC  (today)

Scan engine
Detection
Engine version

Reason Heuristics
PUP.Solimba.FIRSERIA.Bundler (M)
16.4.12.9

File size:
164.8 KB (168,760 bytes)

Product version:
1.0.0.11

Copyright:
Copyright 2013

Original file name:
installer.exe

File type:
Executable application (Win32 EXE)

Bundler/Installer:
Solimba DownloadMR

Language:
Language Neutral

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

Digital Signature
Signed by:
FIRSERIA, S.L.

Authority:
Thawte, Inc.

Valid from:
7/23/2013 6:00:00 PM

Valid to:
7/24/2014 5:59:59 PM

Subject:
CN="FIRSERIA, S.L.", OU=IT, O="FIRSERIA, S.L.", L=Badalona, S=Barcelona, C=ES

Issuer:
CN=Thawte Code Signing CA - G2, O="Thawte, Inc.", C=US

Serial number:
73C4780FAC0CD497B0778732FB8AF673

File PE Metadata
Compilation timestamp:
10/3/2013 2:57:06 AM

OS version:
5.1

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
10.0

CTPH (ssdeep):
3072:H9evHrrRXqQDRrs23xgWwHLdRFrz2VrN/LM/vhkJzW/4J+eO5PIO0g:H0vLrp9rsTDLdPGNY/vh0zWQJ+X5PIOF

Entry address:
0x7A117

Entry point:
60, E8, 00, 00, 00, 00, 58, 05, 5A, 0B, 00, 00, 8B, 30, 03, F0, 2B, C0, 8B, FE, 66, AD, C1, E0, 0C, 8B, C8, 50, AD, 2B, C8, 03, F1, 8B, C8, 57, 51, 49, 8A, 44, 39, 06, 88, 04, 31, 75, F6, 2B, C0, AC, 8B, C8, 80, E1, F0, 24, 0F, C1, E1, 0C, 8A, E8, AC, 0B, C8, 51, 02, CD, BD, 00, FD, FF, FF, D3, E5, 59, 58, 8B, DC, 8D, A4, 6C, 90, F1, FF, FF, 51, 2B, C9, 51, 51, 8B, CC, 51, 66, 8B, 17, C1, E2, 0C, 52, 57, 83, C1, 04, 51, 50, 83, C1, 04, 56, 51, E8, 5E, 00, 00, 00, 8B, E3, 5E, 5A, 2B, C0, 89, 04, 32, B4, 10...
 
[+]

Entropy:
7.8502

Packer / compiler:
ASPack v1.08.04

Code size:
101.5 KB (103,936 bytes)

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

http://dl.softpzivrubajjui.com/n/3.0.20.3/.../skype.exe

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