skype_setup.exe

Dnldstr_Aggregator Downloader

Download Sphere

The installer utilizes the installCore download manager which may bundle additional offers for various ad-supported toolbars, extensions and utilities. The application skype_setup.exe by Download Sphere 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 download.downloadsable.com.
Publisher:
Dnldstr_Aggregator  (signed by Download Sphere)

Product:
Dnldstr_Aggregator Downloader

Version:
6.0.45.34368

MD5:
1d5e68c647e4f33fed88622225d2bd38

SHA-1:
3c8dbe2b3e4d0835e25798cf9d5f85d69028d769

SHA-256:
a6e1f0489ea4102100aa4189d02003da69126c050fe803aec68b5e5cc8aedf3e

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 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:
11/2/2024 7:17:12 PM UTC  (today)

Scan engine
Detection
Engine version

Reason Heuristics
PUP.installCore.Download.Installer (M)
16.7.2.23

File size:
773.9 KB (792,480 bytes)

Product version:
6.0.45.34368

Copyright:
Dnldstr_Aggregator

File type:
Executable application (Win32 EXE)

Bundler/Installer:
installCore (using Inno Setup)

Language:
Language Neutral

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

Digital Signature
Signed by:

Authority:
COMODO CA Limited

Valid from:
1/8/2015 5:00:00 PM

Valid to:
1/8/2017 4:59:59 PM

Subject:
CN=Download Sphere, O=Download Sphere, STREET="1732 1st Ave #26525", L=New York, S=NY, PostalCode=10128, C=US

Issuer:
CN=COMODO RSA Code Signing CA, O=COMODO CA Limited, L=Salford, S=Greater Manchester, C=GB

Serial number:
09ED318A28B41FD6E81D57ED46FD6A2D

File PE Metadata
Compilation timestamp:
6/19/1992 4:22:17 PM

OS version:
1.0

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
2.25

CTPH (ssdeep):
24576:ARhMX6Ur/VzdyjW6cvUTOQBOWwd1jODAAi:A7of/VJyC6cMllwPjuu

Entry address:
0xA5F8

Entry point:
55, 8B, EC, 83, C4, C4, 53, 56, 57, 33, C0, 89, 45, F0, 89, 45, DC, E8, CE, 8A, FF, FF, E8, D5, 9C, FF, FF, E8, 64, 9F, FF, FF, E8, 07, A0, FF, FF, E8, A6, BF, FF, FF, E8, 11, E9, FF, FF, E8, 78, EA, FF, FF, 33, C0, 55, 68, C9, AC, 40, 00, 64, FF, 30, 64, 89, 20, 33, D2, 55, 68, 92, AC, 40, 00, 64, FF, 32, 64, 89, 22, A1, 14, C0, 40, 00, E8, 26, F5, FF, FF, E8, 11, F1, FF, FF, 80, 3D, 34, B2, 40, 00, 00, 74, 0C, E8, 23, F6, FF, FF, 33, C0, E8, C4, 97, FF, FF, 8D, 55, F0, 33, C0, E8, B6, C5, FF, FF, 8B, 55...
 
[+]

Entropy:
7.8854

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

Code size:
39.5 KB (40,448 bytes)

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

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