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gsnk_10_mhd_sunakaze.exe

Rutubo

AVSoftware Ltd

The application gsnk_10_mhd_sunakaze.exe, “Rutubo Setup ” by AVSoftware has been detected as a potentially unwanted program 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 Inno Setup installer. The setup program uses the InstallCore engine which may bundle additional software offers including toolbars and browser extensions. The file has been seen being downloaded from www.signbitsfun.com.
Publisher:
Dom   (signed by AVSoftware Ltd)

Product:
Rutubo

Description:
Rutubo Setup

Version:
5.0.2.1

MD5:
082e5cdd99836b77984213f33f8ba967

SHA-1:
5cc161e94f6049a591be2959052284d42826cb82

SHA-256:
a350278ab66f6fbcc0c08554c780b2f5bf6c7fc044191705e18bd432373d93a2

Scanner detections:
1 / 68

Status:
Potentially unwanted

Explanation:
Uses the InstallCore download manager to install additional potentially unwanted software which may include extensions such as DealPly and various toolbars.

Analysis date:
1/12/2025 4:25:36 AM UTC  (today)

Scan engine
Detection
Engine version

Reason Heuristics
PUP.InstallCore.AVSoftwa.Installer (M)
16.6.13.12

File size:
968.8 KB (992,064 bytes)

Product version:
2.3.8

File type:
Executable application (Win32 EXE)

Installer:
Inno Setup

Language:
Language Neutral

Common path:
C:\users\{user}\appdata\local\microsoft\windows\inetcache\ie\{random}\gsnk_10_mhd_sunakaze.exe

Digital Signature
Signed by:
AVSoftware Ltd

Authority:
GlobalSign nv-sa

Valid from:
12/31/2015 6:55:52 AM

Valid to:
12/31/2016 6:55:52 AM

Subject:
CN=AVSoftware Ltd, O=AVSoftware Ltd, L=Sofia, C=BG

Issuer:
CN=GlobalSign CodeSigning CA - SHA256 - G2, O=GlobalSign nv-sa, C=BE

Serial number:
112134814B6C56AF7047C195AE1D737EC185

File PE Metadata
Compilation timestamp:
6/19/1992 3:22:17 PM

OS version:
1.0

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
2.25

CTPH (ssdeep):
24576:M6WsEh1GXeQO2Our4MkO6H12ro8JG8Gf5l1nRobv:dch10ZO2OuUu6H0rowyfD0

Entry address:
0xA5F8

Entry point:
55, 8B, EC, 83, C4, C4, 53, 56, 57, 33, C0, 89, 45, F0, 89, 45, DC, E8, CE, 8A, FF, FF, E8, D5, 9C, FF, FF, E8, 64, 9F, FF, FF, E8, 07, A0, FF, FF, E8, A6, BF, FF, FF, E8, 11, E9, FF, FF, E8, 78, EA, FF, FF, 33, C0, 55, 68, C9, AC, 40, 00, 64, FF, 30, 64, 89, 20, 33, D2, 55, 68, 92, AC, 40, 00, 64, FF, 32, 64, 89, 22, A1, 14, C0, 40, 00, E8, 26, F5, FF, FF, E8, 11, F1, FF, FF, 80, 3D, 34, B2, 40, 00, 00, 74, 0C, E8, 23, F6, FF, FF, 33, C0, E8, C4, 97, FF, FF, 8D, 55, F0, 33, C0, E8, B6, C5, FF, FF, 8B, 55...
 
[+]

Entropy:
7.9332

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

Code size:
39.5 KB (40,448 bytes)

The file gsnk_10_mhd_sunakaze.exe has been seen being distributed by the following URL.

http://www.signbitsfun.com/c?x=tO9YPBWuG3N5bbpX2k4S0eGCPk/hjdHYRc0f31vGtBY=&c=ypK8FEOdGNQ6mp20XoPlBvmpgm9AhZk6RTyJBkENz7eoPaWQyS5010VSzaBQMmz7PeCjl/VOUW r9rR7LGHP0sHqtZfqBy85j2nZv4xQXd0/UkuimdfLu9hMb94B5hDD&downloadAs=GSNk_10_mHD_Sunakaze.exe&fallback_url=https://s02.solidfilesusercontent.com/OTAwMmQyYzQzNGVjNmU0NWUwZmU4ZDk3NTk3NjMxYzU5YmQyY2UxNToxYkJ2MFA6Zl9KeFpMNjJ1YXZranotajhsbmxGVWJmZ0hr/.../GSNk_10_mHD_Sunakaze.mp4

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