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winrar_installer.exe

Onekit Internet S,L

The application winrar_installer.exe by Onekit Internet S,L has been detected as adware 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 OneKit Downloader installer. The installer is marketed through download protals and search ads as WinRAR archiver but will also install additional software offers which include adware, PUPs and browser toolbars. The file has been seen being downloaded from winrar.begin.pro.
Publisher:
Onekit Internet S,L  (signed and verified)

MD5:
45dbc6f25ca432699043abf1e2bf5489

SHA-1:
7c204d4283a3801c6eda7840f86142be8c46e6ed

SHA-256:
0fb5b4c5e924993237f671caf5e8297198b69d245b2a4843bff78c1b6ecefe9b

Scanner detections:
1 / 68

Status:
Adware

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 'download manager' is also considered bundleware, a utility designed to download software (possibly legitimate or opensource) and bundle it with a number of optional offers including ad-supported utilities, toolbars, shopping comparison tools and browser extensions.

Analysis date:
4/18/2025 4:24:59 AM UTC  (today)

Scan engine
Detection
Engine version

Reason Heuristics
PUP.OnekitInternet.Bundler (M)
16.6.8.16

File size:
1.4 MB (1,500,616 bytes)

File type:
Executable application (Win32 EXE)

Bundler/Installer:
OneKit Downloader

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

Digital Signature
Signed by:
Onekit Internet S,L

Authority:
GlobalSign nv-sa

Valid from:
4/17/2012 6:11:53 AM

Valid to:
4/18/2013 6:11:53 AM

Subject:
E=info@onekit.com, CN="Onekit Internet S,L", O="Onekit Internet S,L", L=Barcelona, S=Barcelona, C=ES

Issuer:
CN=GlobalSign CodeSigning CA - G2, O=GlobalSign nv-sa, C=BE

Serial number:
1121082E90950E0960FF7F21E2D20A9F1AF6

File PE Metadata
Compilation timestamp:
12/4/2012 2:27:43 AM

OS version:
5.1

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
11.0

CTPH (ssdeep):
24576:99WC988bu6CoEVRMz82LEReUbm8eLE3cwa4CrjHqaqMEpXqSM0sc4VfRRQ:9B88TCoCez82UeD8eQaPFvYXHdyfRRQ

Entry address:
0xE39A

Entry point:
E8, 8D, 88, 00, 00, E9, 00, 00, 00, 00, 6A, 14, 68, B8, D1, 42, 00, E8, 50, 57, 00, 00, E8, 32, 29, 00, 00, 0F, B7, F0, 6A, 02, E8, 20, 88, 00, 00, 59, B8, 4D, 5A, 00, 00, 66, 39, 05, 00, 00, 40, 00, 74, 04, 33, DB, EB, 33, A1, 3C, 00, 40, 00, 81, B8, 00, 00, 40, 00, 50, 45, 00, 00, 75, EB, B9, 0B, 01, 00, 00, 66, 39, 88, 18, 00, 40, 00, 75, DD, 33, DB, 83, B8, 74, 00, 40, 00, 0E, 76, 09, 39, 98, E8, 00, 40, 00, 0F, 95, C3, 89, 5D, E4, E8, 5E, 5D, 00, 00, 85, C0, 75, 08, 6A, 1C, E8, DC, 00, 00, 00, 59, E8...
 
[+]

Entropy:
7.7673  (probably packed)

Code size:
139.5 KB (142,848 bytes)

The file winrar_installer.exe has been seen being distributed by the following URL.

http://winrar.begin.pro/.../down.php?p=US-SOFT

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