converterlitesetup.exe

KBM2 Installer

Best Download Manager

Part of the Yontoo adware component, a web browser plugin that injects unwanted ads in the browser. The application converterlitesetup.exe by Best Download Manager has been detected as adware by 11 anti-malware scanners. During install, it bundles potentially unwanted software on a user's computer at the same time without adequate consent. It is also typically executed from an Internet Explorer cache folder. The file has been seen being downloaded from www.converterlite.com and multiple other hosts. While running, it connects to the Internet address api.yontoo.com on port 80 using the HTTP protocol.
Publisher:
Best Download Manager   (signed by Best Download Manager)

Product:
KBM2 Installer

Version:
2.5.1.0

MD5:
2417d426c99ddae9040d5a4c13d0c08e

SHA-1:
86bf4e40f73894d367a0d28e1540e0d605c04071

SHA-256:
bf315b7245ba84ce3ea8c534a35ced5c2452b769cb0497fdf2919cf52a8e1aa6

Scanner detections:
11 / 68

Status:
Adware

Explanation:
May bundle additional potentially unwanted software such as adware during setup.

Analysis date:
12/25/2024 2:14:16 AM UTC  (today)

Scan engine
Detection
Engine version

Agnitum Outpost
Riskware.Agent
7.1.1

AVG
AdInject.Bdmngr
2015.0.3400

Dr.Web
Adware.Plugin.85
9.0.1.0208

ESET NOD32
Win32/KBM (variant)
8.9823

Fortinet FortiGate
Riskware/KBM
7/27/2014

Malwarebytes
PUP.Optional.BundleInstaller.A
v2014.07.27.08

McAfee
Artemis!2417D426C99D
5600.7056

NANO AntiVirus
Riskware.Win32.Plugin.cxiows
0.28.0.59921

Reason Heuristics
PUP.Installer.BestDownloadManager.S
14.8.8.0

Trend Micro House Call
TROJ_GEN.F47V0220
7.2.208

VIPRE Antivirus
sterkly LLC
29410

File size:
537.1 KB (550,024 bytes)

Product version:
2.5.1.0

Copyright:
(c) Best Download Manager . All rights reserved.

Original file name:
KBM2.exe

File type:
Executable application (Win32 EXE)

Language:
English (United States)

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

Digital Signature
Authority:
VeriSign, Inc.

Valid from:
7/24/2013 5:00:00 PM

Valid to:
7/25/2015 4:59:59 PM

Subject:
CN=Best Download Manager, OU=Digital ID Class 3 - Microsoft Software Validation v2, O=Best Download Manager, L=Carlsbad, S=California, C=US

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:
5F3BBF9CAABCE7C81AB69ABF7371A064

File PE Metadata
Compilation timestamp:
8/7/2013 12:25:15 PM

OS version:
5.1

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
10.0

CTPH (ssdeep):
12288:Jgq6uX5c0RzWguzZylIAllGVytvHdKme7IZopY5dGQCIO:JR610ZluglqytYmesZoZQA

Entry address:
0x3A3C0

Entry point:
E8, 0E, 6F, 00, 00, E9, 89, FE, FF, FF, 3B, 0D, D0, 0B, 47, 00, 75, 02, F3, C3, E9, 95, 6F, 00, 00, 8B, FF, 55, 8B, EC, 56, 8B, 75, 14, 85, F6, 75, 04, 33, C0, EB, 61, 83, 7D, 08, 00, 75, 13, E8, D9, 35, 00, 00, 6A, 16, 5E, 89, 30, E8, 6C, 75, 00, 00, 8B, C6, EB, 48, 83, 7D, 10, 00, 74, 16, 39, 75, 0C, 72, 11, 56, FF, 75, 10, FF, 75, 08, E8, 66, 70, 00, 00, 83, C4, 0C, EB, C7, FF, 75, 0C, 6A, 00, FF, 75, 08, E8, B4, 31, 00, 00, 83, C4, 0C, 83, 7D, 10, 00, 74, BB, 39, 75, 0C, 73, 0E, E8, 8F, 35, 00, 00, 6A...
 
[+]

Entropy:
6.3331

Code size:
342.5 KB (350,720 bytes)

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

http://www.converterlite.com/download

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

TCP (HTTP):
Connects to wac.edgecastcdn.net  (72.21.81.13:80)

TCP (HTTP):
Connects to service.yontoo.com  (8.25.35.148:80)

TCP (HTTP):
Connects to api.yontoo.com  (8.25.35.15:80)

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