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skype_installer.exe

Geryon Ads S.L.

The installer utilizes the installCore download manager which may bundle additional offers for various ad-supported toolbars, extensions and utilities. The application skype_installer.exe by Geryon Ads S.L has been detected as adware by 2 anti-malware scanners. The program is a setup application that uses the installCore installer. The setup program uses the InstallCore engine which may bundle additional software offers including toolbars and browser extensions. The file has been seen being downloaded from softwareforfree.net.
Publisher:
Geryon Ads S.L.  (signed and verified)

MD5:
7bcddf133cae13e1b1fcef98faffaf12

SHA-1:
153fcc335670dfab00f8c9762827669e0159b3c3

SHA-256:
86fff38d0c2ef6dc9363be984e58017625ec3ea0ae0f25b7ce3d431303eb0f9d

Scanner detections:
2 / 68

Status:
Adware

Explanation:
Uses the InstallCore download manager to install additional potentially unwanted software which may include extensions such as DealPly and various toolbars.

Description:
This is also known as bundleware, or downloadware, which is an downloader designed to simply deliver ad-supported offers in the setup routine of an otherwise legitimate software.

Analysis date:
12/26/2024 1:39:43 PM UTC  (today)

Scan engine
Detection
Engine version

Baidu Antivirus
Adware.Win32.InstallCore
4.0.3.14108

Reason Heuristics
PUP.GeryonAdsSL.P
14.10.8.13

File size:
757 KB (775,120 bytes)

File type:
Executable application (Win32 EXE)

Bundler/Installer:
installCore (using Inno Setup)

Language:
Language Neutral

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

Digital Signature
Signed by:
Geryon Ads S.L.

Authority:
Thawte, Inc.

Valid from:
6/16/2014 2:00:00 AM

Valid to:
6/17/2015 1:59:59 AM

Subject:
CN=Geryon Ads S.L., OU=IT, O=Geryon Ads S.L., L=Barcelona, S=Barcelona, C=ES

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

Serial number:
71F910550D2DD2713679787B12FF2EA0

File PE Metadata
Compilation timestamp:
6/20/1992 12:22:17 AM

OS version:
1.0

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
2.25

CTPH (ssdeep):
12288:VtFa2tgBHBEDFn4LKIclJjR6/1/NbHbn2HKZQdaC7Tl7C7+ciBUCHwBzp/zz/S51:VtFztgBHSxyKNlJj8/pHbnTqaATll1aQ

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, BF, A9, FF, FF, E8, 5E, 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...
 
[+]

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

Code size:
37 KB (37,888 bytes)

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

http://softwareforfree.net/.../skype.php

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