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free-youtube-download-manager-1-es-en-br-fr-de-it-win.exe

KBM2 Installer

sterkly LLC

Part of the Yontoo adware component, a web browser plugin that injects unwanted ads in the browser. The application free-youtube-download-manager-1-es-en-br-fr-de-it-win.exe by sterkly has been detected as adware by 1 anti-malware scanner with very strong indications that the file is a potential threat. This is a setup and installation application and has been known to bundle potentially unwanted software. The file has been seen being downloaded from dw.uptodown.com and multiple other hosts.
Publisher:
sterkly LLC  (signed and verified)

Product:
KBM2 Installer

Version:
2.1.0.5

MD5:
deabf09d4757221eb972c2f1942533c8

SHA-1:
e86e3dead8733e24eb0ac627f6e178d73825748b

SHA-256:
efaca5a76154b2d9cb7ea2ccbb65bb5fd44af68b8ce1c0e1738694aadb5ba94d

Scanner detections:
1 / 68

Status:
Adware

Explanation:
Belongs to the Sambreel/Yontoo progam that inserts various forms of advertising in the user's web browser, installed with minimal or no user consent.

Analysis date:
4/20/2024 12:31:11 AM UTC  (today)

Scan engine
Detection
Engine version

Reason Heuristics
PUP.Yontoo.sterkly.Installer (M)
16.2.17.19

File size:
537.1 KB (550,008 bytes)

Product version:
2.1.0.5

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\free-youtube-download-manager-1-es-en-br-fr-de-it-win.exe

Digital Signature
Signed by:
sterkly LLC

Authority:
VeriSign, Inc.

Valid from:
1/21/2013 10:00:00 PM

Valid to:
2/21/2015 9:59:59 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:
1/7/2013 7:45:58 PM

OS version:
5.1

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
10.0

CTPH (ssdeep):
12288:PPSh8RbmElZtwKZn7dkoXYJhW32oiJ6kZ/ooLQ+c:PPSMms7koXR32oSLZAOQ+c

Entry address:
0x397CB

Entry point:
E8, A3, 6C, 00, 00, E9, 89, FE, FF, FF, 3B, 0D, D0, FB, 46, 00, 75, 02, F3, C3, E9, 2A, 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, 6E, 33, 00, 00, 6A, 16, 5E, 89, 30, E8, 01, 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, FB, 6D, 00, 00, 83, C4, 0C, EB, C7, FF, 75, 0C, 6A, 00, FF, 75, 08, E8, 49, 2F, 00, 00, 83, C4, 0C, 83, 7D, 10, 00, 74, BB, 39, 75, 0C, 73, 0E, E8, 24, 33, 00, 00, 6A...
 
[+]

Code size:
339 KB (347,136 bytes)

The file free-youtube-download-manager-1-es-en-br-fr-de-it-win.exe has been seen being distributed by the following 3 URLs.

http://dw.uptodown.com/dwn/ex-h1L2ENS6EiEIx0WSkyr0qSe4SUf5-OgAaqTPYc_sfNt0AdrK5ros7NSE5cQvCWEgPXCNhsnt-Wmn_MbMed-MvaY_n572DI3ZkCVTUUszhj8N-1nonzhTOZwL82HRp/C9LcS00xJUKMgtieA1Td11UiLIJv0tk820TQwq_1sFsNeBWCtISQuGwcghuLoI6oO--qxgijluG96ahESWSU09rkKX010Hw2e_Kg82_QlhL1gd0h4hahq55N4yPwkdou/j6ontI2mYV4O6O4h2_z3GCRIClnxPdyXM1MzL0_4_0QS7uqVQnaWkqzkKMY2YNAHTX-Pm-ASRjVmOP4lVGmPSI0YeJE5HaAmzhRdqrlcDuQ-yEsADfoo-wOBPRe2GoYc/.../

http://dw.uptodown.com/dwn/yha31RrlcflWtZJZh94xE_5zLB6sXZYXj_t4lM45vYXX-dn5DTS_LXwYCqvG__CoFNelAv2YJw6QR5QIWdN1KnY1J3kXErhs_Qz-Aong0TeIZT-OuKS7KRqtmbLJDymL/Nxj2kHUwwowDqoYFTOc_E6GswaqXMFhQBnFiAaSG61xObgGbGhpGKlOE0IgsFecBH86HK3MPrehl6I22ISVnEQlL1gHEtE_02UCUnWhKtZgr-ghfgdUAmZ3RwpH97kif/_rmVKxnARw_dGjKztE67AlU8X5aXeHkhM_56Gft71VZwRugWJKpeh7O83msIiXnFNMshO9XYEc_A72fh_rIW6Ds9MBGnLFXcQnaxEJEblSJ8SWkbZspmvneNQdvHg1bJ/.../

http://dw.ar.uptodown.com/dl/1442758248/.../free-youtube-download-manager-1-es-en-br-fr-de-it-win.exe

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