viber.exe

Makakuk

BULLY UNITY LTD

The installer utilizes the installCore download manager which may bundle additional offers for various ad-supported toolbars, extensions and utilities. The application viber.exe, “Makakuk Setup ” by BULLY UNITY 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 installCore installer. The file has been seen being downloaded from www.giftnewgift.com.
Publisher:
Riha   (signed by BULLY UNITY LTD)

Product:
Makakuk

Description:
Makakuk Setup

MD5:
642755fa5945740cd4341df516d593d5

SHA-1:
83fa39092155503fb9e025bc58912ca0a613eab0

SHA-256:
d2d75f987ce5f4b6d853f892c5573decf2a283a2834a8209417b2e02e603c589

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 is also known as bundleware, or downloadware, which is an downloader designed to simply deliver ad-supported offers in the setup routine of an otherwise legitimate software.

Analysis date:
8/13/2025 7:55:41 PM UTC  (today)

Scan engine
Detection
Engine version

Reason Heuristics
PUP.installCore (M)
17.3.14.20

File size:
1.3 MB (1,402,560 bytes)

Product version:
5.3.2

Copyright:
Lite

File type:
Executable application (Win32 EXE)

Bundler/Installer:
installCore (using Inno Setup)

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

Digital Signature
Signed by:

Authority:
GlobalSign nv-sa

Valid from:
8/9/2016 12:55:02 PM

Valid to:
8/10/2017 12:55:02 PM

Subject:
CN=BULLY UNITY LTD, O=BULLY UNITY LTD, L=Jerusalem, C=IL

Issuer:
CN=GlobalSign CodeSigning CA - SHA256 - G3, O=GlobalSign nv-sa, C=BE

Serial number:
60FCAE84E0126FC8F49EC1AD

File PE Metadata
Compilation timestamp:
6/20/1992 1:22:17 AM

OS version:
1.0

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
2.25

Entry address:
0xAA98

Entry point:
55, 8B, EC, 83, C4, C4, 53, 56, 57, 33, C0, 89, 45, F0, 89, 45, DC, E8, 2E, 86, FF, FF, E8, 35, 98, FF, FF, E8, 9C, 9B, FF, FF, E8, B7, 9F, FF, FF, E8, 56, BF, FF, FF, E8, ED, E8, FF, FF, E8, 54, EA, FF, FF, 33, C0, 55, 68, 69, B1, 40, 00, 64, FF, 30, 64, 89, 20, 33, D2, 55, 68, 32, B1, 40, 00, 64, FF, 32, 64, 89, 22, A1, 14, D0, 40, 00, E8, 26, F5, FF, FF, E8, 11, F1, FF, FF, 80, 3D, 34, C2, 40, 00, 00, 74, 0C, E8, 23, F6, FF, FF, 33, C0, E8, 24, 93, FF, FF, 8D, 55, F0, 33, C0, E8, 66, C5, FF, FF, 8B, 55...
 
[+]

Entropy:
7.9796

Packer / compiler:
Inno Setup v5.x - Installer Maker

Code size:
40.5 KB (41,472 bytes)

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

http://www.giftnewgift.com/wQ7Dy2KtW8Bp2ihp_jXBzKBl9U14h9GrNlEhnhNYhdPzbtsYakscMdRCySUWlJ2rpYMVxKXS_Gt2QzqaT4ZHpqNxSNnTxPq4kFETb8mEDNE8C3vEqiKpwWkDN9NVuNXCVyOn1QrbzbN1UNBT9xUdO3QUiJTp5UGRa4UKIe0uSO93G6T0srcmKzNU6nGOfMApYooevJqQvWxoZluxykXytEPvpHO35IjycmeiMq40N2xXcEHkH m4VB HmlZKaXpEAQ94xpsTcGa8_OoCLdkL1QvDMOv2 Sl3i9CA0VqZt_CF10aWNP2v1bD38lZz01hpWEpMSs6UMNwkM3FBOazsf59EAd2OQXc4NA08YmXPUA5jHsALpJWXYv4QnfCaf8VCYnrIju5xWi HP6wUjg_6GXVYACC9D33Jn5k6xZj kjcpab0 UvifB70S9nHZWnKNfLyqj3wR9SUjrRfv6Lo2nAz0LGaPwWEKWVHgTRffwsLjaCVKgCbHmrTxSIFeXFsOTmI5PztkvzvCd0Mcls7J_7Ua0wbUdq8lyQPGb2taQpH6dMQUwhg=-G34AAGRpXUu7KLxQOiCdnMAB8S9pAZ28xRxgbmNX8BpkQfQaxTae_1R3N65unHF9j8_OTsgtJAnkDlhNpFzqQ5Loe7fiOb676YLprhB4XeBvCyroYmw97UM8vSuwBQ==-e

Remove viber.exe - Powered by Reason Core Security