skype.exe

PLUGIN UPDATE SL

This is the Softpulse installer which bundles applications with offers for additional 3rd party software, mostly unwanted adware, and may be installed with minimal consent. The application skype.exe by PLUGIN UPDATE SL 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 Softpulse SoftwareBundler installer. The file has been seen being downloaded from ttb.defiletake.com.
Publisher:
PLUGIN UPDATE SL  (signed and verified)

MD5:
e2a2bea50502fea43a3b35c831bc7ab6

SHA-1:
d098f75db49f3ad1f0032f9cc429d99729326e46

SHA-256:
ba37f5c207d596a1c6d042f304ed61aca58977fe0d9f6b4c076e5b7d8f19f09e

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:
12/26/2024 8:22:55 AM UTC  (today)

Scan engine
Detection
Engine version

Reason Heuristics
PUP.Softpulse (M)
16.7.29.19

File size:
670 KB (686,096 bytes)

File type:
Executable application (Win32 EXE)

Bundler/Installer:
Softpulse SoftwareBundler

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

Digital Signature
Authority:
thawte, Inc.

Valid from:
4/21/2015 7:00:00 AM

Valid to:
7/21/2016 6:59:59 AM

Subject:
CN=PLUGIN UPDATE SL, O=PLUGIN UPDATE SL, L=GUIA DE ISORA, S=Santa Cruz de Tenerife, C=ES

Issuer:
CN=thawte SHA256 Code Signing CA, O="thawte, Inc.", C=US

Serial number:
6F8446D02E4D8F276D50C2DF19B10E72

File PE Metadata
Compilation timestamp:
11/12/2015 5:14:58 PM

OS version:
5.0

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
9.0

CTPH (ssdeep):
12288:wE4MPYxjsqM776himhxOdTu5MuBGqqTugX1pIgyNdnZnN9rx920846aZR:rbkwqAaxOBub8p1kZzrx9RZR

Entry address:
0x1A3000

Entry point:
60, BE, 00, 60, 50, 00, 8D, BE, 00, B0, EF, FF, 57, 83, CD, FF, EB, 10, 90, 90, 90, 90, 90, 90, 8A, 06, 46, 88, 07, 47, 01, DB, 75, 07, 8B, 1E, 83, EE, FC, 11, DB, 72, ED, B8, 01, 00, 00, 00, 01, DB, 75, 07, 8B, 1E, 83, EE, FC, 11, DB, 11, C0, 01, DB, 73, 0B, 75, 28, 8B, 1E, 83, EE, FC, 11, DB, 72, 1F, 48, 01, DB, 75, 07, 8B, 1E, 83, EE, FC, 11, DB, 11, C0, EB, D4, 01, DB, 75, 07, 8B, 1E, 83, EE, FC, 11, DB, 11, C9, EB, 52, 31, C9, 83, E8, 03, 72, 11, C1, E0, 08, 8A, 06, 46, 83, F0, FF, 74, 75, D1, F8, 89...
 
[+]

Entropy:
7.8641

Packer / compiler:
UPX 2.90LZMA

Code size:
632 KB (647,168 bytes)

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

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