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bestvideodownloader.exe

KBM2 Installer

sterkly LLC

Part of the Yontoo adware component, a web browser plugin that injects unwanted ads in the browser. The application bestvideodownloader.exe by sterkly has been detected as adware by 15 anti-malware scanners. During install, it bundles potentially unwanted software on a user's computer at the same time without adequate consent.
Publisher:
sterkly LLC  (signed and verified)

Product:
KBM2 Installer

Version:
2.5.1.0

MD5:
8375cb4dbdc97087af01dce129015dc8

SHA-1:
7d44feb23af8c738d9ee8bc0a062e4d8f04ed0a8

SHA-256:
f994f140ff0fce971afba40321f8474cf639e1567b4781edc3b26636bdb6246d

Scanner detections:
15 / 68

Status:
Adware

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

Analysis date:
4/23/2024 10:59:13 PM UTC  (today)

Scan engine
Detection
Engine version

Agnitum Outpost
Riskware.Agent
7.1.1

AVG
AdInject.Sterkly
2016.0.3074

Baidu Antivirus
PUA.Win32.KBM
4.0.3.15618

Dr.Web
Adware.Plugin.85
9.0.1.0169

Emsisoft Anti-Malware
Trojan.Win32.KBM.AMN
8.15.06.18.11

ESET NOD32
Win32/KBM (variant)
9.10762

Fortinet FortiGate
Riskware/MultiPlug
6/18/2015

F-Prot
W32/Adware.AKRY
v6.4.7.1.166

IKARUS anti.virus
PUA.KBM
t3scan.1.8.3.0

Malwarebytes
PUP.Optional.BundleInstaller.A
v2015.06.18.11

McAfee
Artemis!A98365B65344
5600.6730

NANO AntiVirus
Riskware.Win32.Plugin.cxiows
0.28.6.63474

Reason Heuristics
PUP.Yontoo.sterkly.Installer (M)
15.6.18.23

Trend Micro House Call
Suspicious_GEN.F47V1110
7.2.169

VIPRE Antivirus
sterkly LLC
34998

File size:
539.1 KB (552,056 bytes)

Product version:
2.5.1.0

Copyright:
(c) Sterkly LLC. All rights reserved.

Original file name:
KBM2.exe

File type:
Executable application (Win32 EXE)

Language:
English (United States)

Common path:
C:\users\{user}\downloads\stuff\applications\bestvideodownloader.exe

Digital Signature
Signed by:
sterkly LLC

Authority:
VeriSign, Inc.

Valid from:
1/21/2013 5:00:00 PM

Valid to:
2/21/2015 4:59:59 PM

Subject:
CN=sterkly LLC, OU=Digital ID Class 3 - Microsoft Software Validation v2, O=sterkly LLC, 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:
113C6B2C72DEF110BE64B2ABBC52861E

File PE Metadata
Compilation timestamp:
5/21/2013 2:33:39 PM

OS version:
5.1

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
10.0

CTPH (ssdeep):
12288:TYK9fifCP25JA9OwZEnRq06PsSq9B//sZpeQA:TYK9fX2nER06PshB/EZMQA

Entry address:
0x39D59

Entry point:
E8, A5, 6C, 00, 00, E9, 89, FE, FF, FF, 3B, 0D, D0, 0B, 47, 00, 75, 02, F3, C3, E9, 2C, 6D, 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, 70, 33, 00, 00, 6A, 16, 5E, 89, 30, E8, 03, 73, 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, FD, 6D, 00, 00, 83, C4, 0C, EB, C7, FF, 75, 0C, 6A, 00, FF, 75, 08, E8, 4B, 2F, 00, 00, 83, C4, 0C, 83, 7D, 10, 00, 74, BB, 39, 75, 0C, 73, 0E, E8, 26, 33, 00, 00, 6A...
 
[+]

Entropy:
6.3209

Packer / compiler:
PEQuake V0.06

Code size:
340.5 KB (348,672 bytes)

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