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:
3ad016b0990ea5b06432afacd1349cc3

SHA-1:
7e3d6c395ad973e8019ea9779aec898a7235e7e9

SHA-256:
75768df63382700d573fc4ef0b75f309c3b356e149f28ef959f9e11e3fdafcd9

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 an installer which may bundle legitimate applications with offers for additional 3rd-party applications that may be unwanted by the user. While the installer contains an 'opt-out' feature this is not set be defult and is usually overlooked.

Analysis date:
12/26/2024 8:24:50 AM UTC  (today)

Scan engine
Detection
Engine version

Reason Heuristics
PUP.Softpulse.PLUGINUP.Bundler (M)
16.6.19.19

File size:
670 KB (686,104 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:QE4MPYxjsqM776himhxOdTu5MuBGqqTugX1pIgyNdnZnN9rx920846aZR:LbkwqAaxOBub8p1kZzrx9RZR

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:
7.8644

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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