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kurogazenet_dknn_spe.exe

Rutubo

AVSoftware Ltd

The application kurogazenet_dknn_spe.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.towervaultclear.com.
Publisher:
Dom   (signed by AVSoftware Ltd)

Product:
Rutubo

Description:
Rutubo Setup

Version:
5.0.2.1

MD5:
cb4d6f10a2c4bd4276cc45f5894c1f9b

SHA-1:
ab1e32254e299ceec0c1fb887c798217c6b54ceb

SHA-256:
c62d542aa94080b9c36b463e9883d8fc4e89b5d3ca2350f6759830d49fbaee70

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:
11/5/2024 1:56:52 PM UTC  (today)

Scan engine
Detection
Engine version

Reason Heuristics
PUP.InstallCore (M)
16.8.7.3

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}\kurogazenet_dknn_spe.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:l6WsEh1GXeQO2Our4MkO6H12ro8JG8Gf5l1nRobv:Qch10ZO2OuUu6H0rowyfD0

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

http://www.towervaultclear.com/c?x=HX02FquxmpQDiBk QUKe8uzve37LVGcFQSk0tZRg8W0=&c=nhsqVM4Pt/xS7p5B5/ghqNR63tF0OYSbqq2uoJHCby bhQHmzmOJZaExRXEnDIRkGVBwm2seI085W4D3l4mqWWrNeYRe/db0E7JHIGq4U9DeEcet7J3YefY1onqzadYn&downloadAs=Kurogazenet_DKNN_Spe.exe&fallback_url=https://s03.solidfilesusercontent.com/NWMzYjkwNTU5NWNhNGQ2NDk3N2E2OGJmYjY5Y2VkOThlYWFlNGMxYjoxYkVBVDM6UldRX0Z4MjVfbzBKd3M0T1pIaC1OZjBoYUhz/.../Kurogaze.net_DKNN_Special_07_HD.mp4

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