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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 12 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:
98d0a763480f385b9f3571f743776cf9

SHA-1:
45fcdd1ddc951b62cb72740057a4f51d3184d60e

SHA-256:
8b2cd28499e8599b7dad79a7671e28280d02a3b095823ab09dc6ea2d6fe2afb5

Scanner detections:
12 / 68

Status:
Adware

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

Analysis date:
4/20/2024 12:56:17 AM UTC  (today)

Scan engine
Detection
Engine version

Agnitum Outpost
Riskware.Agent
7.1.1

AVG
AdInject.Sterkly
2015.0.3267

Dr.Web
Adware.Downware.1175
9.0.1.0341

Emsisoft Anti-Malware
Trojan.Win32.KBM.AMN
8.14.12.07.12

ESET NOD32
Win32/KBM (variant)
8.9705

Fortinet FortiGate
Riskware/MultiPlug
12/7/2014

F-Prot
W32/Adware.AKRY
v6.4.7.1.166

Malwarebytes
PUP.Optional.BundleInstaller.A
v2014.12.07.12

McAfee
Artemis!9EB041678458
5600.6923

Reason Heuristics
PUP.Installer.sterkly.T
14.12.7.12

Trend Micro House Call
TROJ_GEN.F47V0625
7.2.341

VIPRE Antivirus
sterkly LLC
28488

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\bestvideodownloader.exe

Digital Signature
Signed by:
sterkly LLC

Authority:
VeriSign, Inc.

Valid from:
1/21/2013 6:00:00 PM

Valid to:
2/21/2015 5:59:59 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:
3/5/2013 1:12:09 PM

OS version:
5.1

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
10.0

CTPH (ssdeep):
12288:Ljw5VPp0aVBkkE/ZmJyZfY2U6/bKKFZYeQBX:Ljw5sanpELZfY2UcKKZxQh

Entry address:
0x39CB4

Entry point:
E8, AA, 6C, 00, 00, E9, 89, FE, FF, FF, 3B, 0D, D0, 0B, 47, 00, 75, 02, F3, C3, E9, 31, 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, 75, 33, 00, 00, 6A, 16, 5E, 89, 30, E8, 08, 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, 02, 6E, 00, 00, 83, C4, 0C, EB, C7, FF, 75, 0C, 6A, 00, FF, 75, 08, E8, 50, 2F, 00, 00, 83, C4, 0C, 83, 7D, 10, 00, 74, BB, 39, 75, 0C, 73, 0E, E8, 2B, 33, 00, 00, 6A...
 
[+]

Entropy:
6.3187

Code size:
340.5 KB (348,672 bytes)

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