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skype.exe

The application skype.exe has been detected as a potentially unwanted program by 5 anti-malware scanners. The program is a setup application that uses the NSIS (Nullsoft Scriptable Install System) installer, however the file is not signed with an authenticode signature from a trusted source. The setup routine uses the RevenYou.Com Pay Per Install platform (OutBrowse) which bundles additional software offers inclduing toolbars, extensions, PC utilities as well as other PUPs. The file has been seen being downloaded from download-file.downloadinfo.co a web site host known to distribute potentially unwanted software operated by Downloadinfo.
MD5:
8fe926576872df74eccc08c4adf12467

SHA-1:
d7aee2567fab855fc3f1619b5919d9b8d4239f42

SHA-256:
b0dea668de0246df40ee5b14b7f96f983bd4236da35f5f25174ce16e4c2a9f15

Scanner detections:
5 / 68

Status:
Potentially unwanted

Explanation:
Bundles additional adware offers during download and installation using the OutBrowse installer.

Analysis date:
12/26/2024 1:00:45 AM UTC  (today)

Scan engine
Detection
Engine version

avast!
Win32:OutBrowse-G [PUP]
160518-2

Dr.Web
Adware.Downware.2081
9.0.1.05190

ESET NOD32
Win32/OutBrowse.AA potentially unwanted application
8.0.319.0

Microsoft Security Essentials
Threat.Undefined
1.225.227.0

Reason Heuristics
PUP.OutBrowse (M)
16.7.2.13

File size:
706.9 KB (723,834 bytes)

File type:
Executable application (Win32 EXE)

Installer:
NSIS (Nullsoft Scriptable Install System)

Language:
Language Neutral

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

File PE Metadata
Compilation timestamp:
12/5/2009 8:50:52 PM

OS version:
4.0

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
6.0

CTPH (ssdeep):
12288:VLlmv05Fa7QsMHYVgAfFPmwQg8lfUDJkvqGzj5FQ8QDb3dnDwAr/o/mNe3akx80o:VLKQs7Vg6F+PfUDK95i8QDDphouA3akS

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:
7.9466

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://download-file.downloadinfo.co/download/72/.../

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