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medusakabza_de_small.exe

Rutubo

AVSoftware Ltd

The application medusakabza_de_small.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.chucklevaultsbulk.com.
Publisher:
Dom   (signed by AVSoftware Ltd)

Product:
Rutubo

Description:
Rutubo Setup

Version:
5.0.2.1

MD5:
10ca9eebc43581ac87b133f87c8ce279

SHA-1:
aea051219cbb04bf416c3fd3d089ea0d8ce52457

SHA-256:
45ca9c97cb40b22afd96b6ac565fb9e882f32bc948c82063c540ac9534d47081

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 6:02:50 PM UTC  (today)

Scan engine
Detection
Engine version

Reason Heuristics
PUP.InstallCore (M)
16.7.28.7

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}\medusakabza_de_small.exe

Digital Signature
Signed by:
AVSoftware Ltd

Authority:
GlobalSign nv-sa

Valid from:
12/31/2015 4:55:52 PM

Valid to:
12/31/2016 4:55:52 PM

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:
6/20/1992 12:22:17 AM

OS version:
1.0

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
2.25

CTPH (ssdeep):
24576:r6WsEh1GXeQO2Our4MkO6H12ro8JG8Gf5l1nRobv:2ch10ZO2OuUu6H0rowyfD0

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...
 
[+]

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

Code size:
39.5 KB (40,448 bytes)

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

http://www.chucklevaultsbulk.com/c?x=SUsY8tvugfBF pJ1AK5t6sAcIoCGszusheDsMlMLlas=&c=jDsDYqzMZGU3XS3CBXxHEVsjiT/4gYJ0n0ZNje0QZowR APPK3qwzAXfo1rQZngc6tuVK2cslUiiWiCdnexK 4XUEeMT2ftK 2mzGvKR9JwztDhh6ExuavbRpKO61cy8&downloadAs=MedusaKabza_De_Small.exe&fallback_url=http://.../get.php?file=76eb347c&m3

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