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skype_tsv19vuc1.exe

Perion Network Ltd.

The application skype_tsv19vuc1.exe by Perion Network has been detected as a potentially unwanted program 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 Perion Download Manager installer. The file has been seen being downloaded from dm.dmccint.com and multiple other hosts. While running, it connects to the Internet address ude.databssint.com on port 80 using the HTTP protocol.
Publisher:
Perion Network Ltd.  (signed and verified)

MD5:
4b21d094d85ac5ade6d201c77e12bf59

SHA-1:
a15b3e30956aa31eb7b2057971cb9c09f7e4f552

SHA-256:
5af061a7b942b58df011c429c2d9476c4cd492b1cefb86bf813d4abcd541f17c

Scanner detections:
1 / 68

Status:
Potentially unwanted

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:
12/25/2024 1:52:33 PM UTC  (today)

Scan engine
Detection
Engine version

Reason Heuristics
PUP.Perion.Bundler (M)
16.2.4.9

File size:
641.8 KB (657,224 bytes)

File type:
Executable application (Win32 EXE)

Bundler/Installer:
Perion Download Manager (using Nullsoft Install System)

Language:
Language Neutral

Common path:
C:\users\{user}\downloads\skype_tsv19vuc1.exe

Digital Signature
Signed by:
Perion Network Ltd.

Authority:
VeriSign, Inc.

Valid from:
4/23/2012 8:00:00 PM

Valid to:
4/23/2015 7:59:59 PM

Subject:
CN=Perion Network Ltd., OU=Digital ID Class 3 - Microsoft Software Validation v2, O=Perion Network Ltd., L=Tel Aviv, S=Tel Aviv, C=IL

Issuer:
CN=VeriSign Class 3 Code Signing 2010 CA, OU=Terms of use at https://www.verisign.com/rpa (c)10, OU=VeriSign Trust Network, O="VeriSign, Inc.", C=US

Serial number:
45F87694FE8D1984719796AEC8031DF4

File PE Metadata
Compilation timestamp:
2/24/2012 2:19:59 PM

OS version:
5.0

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
10.0

CTPH (ssdeep):
12288:fEbWavU0e6dd8vd4j1uv7txJ+qKC7exSTYJayjNFVWXYXmsr699UH7a:fcW70e6X8vdA1M7t6qB6xScJaypiloa

Entry address:
0x39E3

Entry point:
81, EC, D4, 02, 00, 00, 53, 55, 56, 57, 6A, 20, 33, ED, 5E, 89, 6C, 24, 18, C7, 44, 24, 10, D8, 91, 40, 00, 89, 6C, 24, 14, FF, 15, 30, 80, 40, 00, 68, 01, 80, 00, 00, FF, 15, B8, 80, 40, 00, 55, FF, 15, C0, 82, 40, 00, 6A, 08, A3, B8, 2E, 47, 00, E8, 37, 2A, 00, 00, 55, 68, B4, 02, 00, 00, A3, D0, 2D, 47, 00, 8D, 44, 24, 38, 50, 55, 68, 1C, 93, 40, 00, FF, 15, 84, 81, 40, 00, 68, 04, 93, 40, 00, 68, C0, AD, 46, 00, E8, 19, 27, 00, 00, FF, 15, B4, 80, 40, 00, 50, BF, A0, 30, 4C, 00, 57, E8, 07, 27, 00, 00...
 
[+]

Entropy:
7.9618

Packer / compiler:
Nullsoft install system v2.x

Code size:
28 KB (28,672 bytes)

The file skype_tsv19vuc1.exe has been seen being distributed by the following 2 URLs.

http://dm.dmccint.com//ThinDMDownload/ThinDMDownload.ashx?PublisherID=198&Setid=13&SoftwareName=Skype&SoftwareDownloadUrl=http://allmyapps.com/binary/1405/213067/direct-download?token=0c63f9a06957d29e6d7681d8ecbcbe5aa816537e&ImageUrl=http://static.allmyapps.com/data/s/k/.../ba6a1b6de2e70b25469f235d9ee4f5ec_Skype-logo.png&SoftwareDescription=Get together as often as you like&PUID=1523566052995073452&PPD=search,41357827167,skype,e,,c,Skype,,,www.soft-now.net&FID=CjgKEAjwz7mdBRDS46_ipNqqsEQSJAC4rrGkWgUKWBLu1HSjwoTAgw5XQ38k-LojDSkjvnjbrhLEbvD_BwE&InstallSessionID=1523566052995073452141349276&CID=11111

http://dm.dmccint.com//ThinDMDownload/ThinDMDownload.ashx?PublisherID=198&Setid=13&SoftwareName=Skype&SoftwareDownloadUrl=http://allmyapps.com/binary/1405/213067/direct-download?token=0c63f9a06957d29e6d7681d8ecbcbe5aa816537e&ImageUrl=http://static.allmyapps.com/data/s/k/.../ba6a1b6de2e70b25469f235d9ee4f5ec_Skype-logo.png&SoftwareDescription=Get together as often as you like&PUID=1605756799589677116&PPD=search,41360128047,skype,e,,c,Skype,,,www.soft-now.net&FID=CKrc2tu7tL8CFWrl7AodwxMAAA&InstallSessionID=160575679958967711603252676&CID=11111

The executing file has been seen to make the following network communications in live environments.

TCP (HTTP):
Connects to ude.databssint.com  (107.22.223.150:80)

TCP (HTTP):
Connects to storage.stgbssint.com  (172.229.236.170:80)

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