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skypesetup.exe

The application skypesetup.exe has been detected as a potentially unwanted program by 8 anti-malware scanners. The program is a setup application that uses the Inno Setup installer, however the file is not signed with an authenticode signature from a trusted source. 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 downloader.downloadinfo.co a known adware distribution point operated by Downloadinfo.
MD5:
66b2c4c7ffdf7009b0d835655a869c73

SHA-1:
0090e1923038f5e5a23c3a4b74f41e2c5c9553ed

SHA-256:
f500fdeca0945a3f8d9a7f771e387af7bb5d80377e54478f5502fb8234fbbeb1

Scanner detections:
8 / 68

Status:
Potentially unwanted

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

Analysis date:
4/19/2024 9:30:06 AM UTC  (today)

Scan engine
Detection
Engine version

Avira AntiVirus
W32/Ramnit.C
7.11.30.172

avast!
Win32:Adware-gen [Adw]
151217-3

AVG
Adware Generic5.BDFX
2015.0.4477

Dr.Web
Trojan.Crossrider1.49350
9.0.1.05190

ESET NOD32
Win32/InstallCore.BL potentially unwanted application
7.0.302.0

F-Prot
W32/InstallCore.R.gen
4.6.5.141

Sophos
PUA 'Install Core'
5.22

VIPRE Antivirus
Threat.4786018
45976

File size:
603.1 KB (617,608 bytes)

File type:
Executable application (Win32 EXE)

Installer:
Inno Setup

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

File PE Metadata
Compilation timestamp:
6/19/1992 5:22:17 PM

OS version:
1.0

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
2.25

CTPH (ssdeep):
12288:WCyMJfsFJHCmVDYUGr3gHRV0k+Ts+MleJ3RddPbrwDUUfezUImxQK7:WCyMJfsHi0YLr3gA8le/PnwDr2zc

Entry address:
0x98CC

Entry point:
55, 8B, EC, 83, C4, CC, 53, 56, 57, 33, C0, 89, 45, F0, 89, 45, DC, E8, FA, 97, FF, FF, E8, 01, AA, FF, FF, E8, 2C, CC, FF, FF, E8, 73, CC, FF, FF, E8, 0A, F3, FF, FF, E8, 71, F4, FF, FF, 33, C0, 55, 68, 76, 9F, 40, 00, 64, FF, 30, 64, 89, 20, 33, D2, 55, 68, 2C, 9F, 40, 00, 64, FF, 32, 64, 89, 22, A1, 14, B0, 40, 00, E8, 9B, FE, FF, FF, E8, 26, FA, FF, FF, 8D, 55, F0, 33, C0, E8, E0, D0, FF, FF, 8B, 55, F0, B8, D8, BD, 40, 00, E8, AB, 98, FF, FF, 6A, 02, 6A, 00, 6A, 01, 8B, 0D, D8, BD, 40, 00, B2, 01, B8...
 
[+]

Entropy:
7.7555

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

Code size:
36 KB (36,864 bytes)

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

http://downloader.downloadinfo.co/download.php?id=91b98c4fd6b0a31c84f4e9741827dc4184ed81d5&z=0&p=eyJweSI6ImRpIiwicnMiOiJnb29nbGUiLCJydCI6InNlYXJjaCIsImMiOiJ1cyIsIm8iOiJ3aW43IiwiYiI6ImNoMjciLCJ1X2lkIjoiZGlfNTFiN2U5OWU4ZWY4YzMuMDg5OTQyNTgiLCJwYV9pZCI6IjAiLCJzdF9pZCI6IjAiLCJzcF9pZCI6IjAwMDQtMDAwMCIsInRzIjoxMzcxMDA3MzkwLCJrdyI6InNreXBlIiwiY3UiOiJza3lwZSIsImNhIjpudWxsfQ==

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