skype.exe

Extended Setup

The file is a bundle distribution and utilizes the installCore download manager to distribute this potentially unwanted software. The application skype.exe by Extended Setup 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 nl.inncdn.com.
Publisher:
Extended Setup  (signed and verified)

MD5:
c90c74e929dfe8d5592339a9342e9c58

SHA-1:
6a75f4d976597f4ae1c44f8718b17f70eb5009ab

SHA-256:
fc8c019946392c8157396cf7921f74e9a0d200205106df67847df8b0bbb131f1

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 1:31:33 PM UTC  (today)

Scan engine
Detection
Engine version

Reason Heuristics
PUP.installCore (M)
17.3.11.3

File size:
652.1 KB (667,760 bytes)

File type:
Executable application (Win32 EXE)

Bundler/Installer:
installCore (using Inno Setup)

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

Digital Signature
Signed by:

Authority:
COMODO CA Limited

Valid from:
10/22/2013 2:00:00 AM

Valid to:
10/23/2014 1:59:59 AM

Subject:
CN=Extended Setup, O=Extended Setup, STREET=Lilienblum 28, L=Tel Aviv, S=Israel, PostalCode=6513307, C=IL

Issuer:
CN=COMODO Code Signing CA 2, O=COMODO CA Limited, L=Salford, S=Greater Manchester, C=GB

Serial number:
00DC2A1D7B17450E779685BAA191188498

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

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...
 
[+]

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

Code size:
36 KB (36,864 bytes)

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

http://nl.inncdn.com/?domain=skype&name=Skype&icon=aHR0cDovL3pkamVjaWEucGwuc2Z0Y2RuLm5ldC9wbC9zY3JuLzI5MDAwLzI5Mjg3L3NreXBlLTEyLTMyeDMyLnBuZw==&url=aHR0cDovL2Rvd25sb2FkLnNreXBlLmNvbS9tYWNvc3gvU2t5cGVfNS43LjYwLjEwMzcuZG1n&os=&lang=pl_PL

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