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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. It is also typically executed from an Internet Explorer cache folder. The file has been seen being downloaded from v6pxl1p.yze7861.com.
Publisher:
Plugin Update SL  (signed and verified)

MD5:
62638688e999eb8d026f0645b9f30b98

SHA-1:
420f0f776b3314d89de4d1467b435861a8dcb97d

SHA-256:
cab59baa0482f6708efaaaf9503e876905f6c3169604a0743e0c7e7afa24b285

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 8:49:43 PM UTC  (today)

Scan engine
Detection
Engine version

Reason Heuristics
PUP.Softpulse.PluginUp.Bundler (M)
16.3.17.19

File size:
629.1 KB (644,152 bytes)

File type:
Executable application (Win32 EXE)

Bundler/Installer:
Softpulse SoftwareBundler (using Nullsoft Install System)

Common path:
C:\users\{user}\appdata\local\microsoft\windows\temporary internet files\content.ie5\{random}\skype.exe

Digital Signature
Signed by:
Plugin Update SL

Authority:
Thawte, Inc.

Valid from:
6/11/2014 8:00:00 PM

Valid to:
6/12/2015 7:59:59 PM

Subject:
CN=Plugin Update SL, O=Plugin Update SL, L=Guia De Isora, S=Tenerife, C=ES

Issuer:
CN=Thawte Code Signing CA - G2, O="Thawte, Inc.", C=US

Serial number:
1858913428C49A270BE00711E97381C6

File PE Metadata
Compilation timestamp:
12/5/2009 5:50:52 PM

OS version:
4.0

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
6.0

CTPH (ssdeep):
12288:PZcLizTSj0DVyrQBCFXHWvWcP870NiXizM3QtU++ndEzrBndqc3kjeRn:Phqj0yiCFXHWucPxNPzP+kr5d2iR

Entry address:
0x30FA

Entry point:
81, EC, 80, 01, 00, 00, 53, 55, 56, 33, DB, 57, 89, 5C, 24, 18, C7, 44, 24, 10, 60, 91, 40, 00, 33, F6, C6, 44, 24, 14, 20, FF, 15, 30, 70, 40, 00, 68, 01, 80, 00, 00, FF, 15, B0, 70, 40, 00, 53, FF, 15, 7C, 72, 40, 00, 6A, 08, A3, 18, EC, 42, 00, E8, F1, 2B, 00, 00, A3, 64, EB, 42, 00, 53, 8D, 44, 24, 34, 68, 60, 01, 00, 00, 50, 53, 68, 98, 8F, 42, 00, FF, 15, 58, 71, 40, 00, 68, 54, 91, 40, 00, 68, 60, E3, 42, 00, E8, A4, 28, 00, 00, FF, 15, AC, 70, 40, 00, BF, 00, 40, 43, 00, 50, 57, E8, 92, 28, 00, 00...
 
[+]

Entropy:
7.9523

Packer / compiler:
Nullsoft install system v2.x

Code size:
23.5 KB (24,064 bytes)

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

http://v6pxl1p.yze7861.com/vQFrv-gQlpKrwqKH4kTNLJxzjYt0Ri7RJnbtgRg650cymsp_I1on_TjxVMxb90m3L5z6FZhqdJGF1wO6QpQqTrbfsNBBfbOxLM2583ZgUM_CBFyDXkQD8t1zit44yVZ2w2C2ROq-aCNNLZiElVTk_SO2Nvy2H2oBCt0TdRPfQyY

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