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gsnk_03_mhd_sunakaze.exe

Rutubo

AVSoftware Ltd

The application gsnk_03_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:
3d506d14492b0063220680fd6a1b5ecf

SHA-1:
56e0af36afdfaea9e48f1cb657df93360f265a53

SHA-256:
aa53214fd924ab387d11dbdbe399d0b2006da109348b182d1a9f6e305892fb30

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 4:33:58 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_03_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:h6WsEh1GXeQO2Our4MkO6H12ro8JG8Gf5l1nRobv:0ch10ZO2OuUu6H0rowyfD0

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_03_mhd_sunakaze.exe has been seen being distributed by the following URL.

http://www.signbitsfun.com/c?x=2DZThueahNL0CtnzXRiP7OrCoR1yfVVrAl2q 1BjQVA=&c=QK2zPU3oGLTDznVeq8SOuovMz/S3LFWIF4skWY4YC5Rnv7/3aCfgQZfqmqp6smrcP3PGqv8S1UFH0Gn8IYDxH9LGCtuhp/2ZNJJiQUBq5eGeDAiM/XvdP0O6JVmdO97L&downloadAs=GSNK_03_mHD_Sunakaze.exe&fallback_url=https://s04.solidfilesusercontent.com/ZWZlMmFkYmY4YWEzMTBmNDQ2NjU2ZDc4YWE3YTVlYmJkODA3MjZiYzoxYkJ1TFk6UUQteFhSWldWRlNsdVJMRkNFNWNEWlhBYjRV/.../GSNK_03_mHD_Sunakaze.mp4

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