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c.exe

Installer

Soft Web

The application c.exe, “Installer Setup ” has been detected as a potentially unwanted program by 2 anti-malware scanners. The program is a setup application that uses the installCore installer, however the file is not signed with an authenticode signature from a trusted source. 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.centralmegahead.com and multiple other hosts.
Publisher:
Soft Web

Product:
Installer

Description:
Installer Setup

MD5:
1f23cb1adf0924f22743204110030583

SHA-1:
1b638682683e0ecec857759e9971395ddd803ae0

SHA-256:
5043a3e694ea397f2faaa69ea3f1078bb5c7e1d91f7b47afe7279ed9af45244a

Scanner detections:
2 / 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.

Description:
This is an installer which may bundle legitimate applications with offers for additional 3rd-party applications that may be unwanted by the user. While the installer contains an 'opt-out' feature this is not set be defult and is usually overlooked.

Analysis date:
1/13/2025 6:52:06 AM UTC  (today)

Scan engine
Detection
Engine version

ESET NOD32
Win32/InstallCore.ACY.gen potentially unwanted application
7.0.302.0

Reason Heuristics
PUP.InstallCore.Bundler (M)
16.1.13.13

File size:
918 KB (939,984 bytes)

Product version:
2.3.8

File type:
Executable application (Win32 EXE)

Bundler/Installer:
installCore (using Inno Setup)

Language:
Language Neutral

Common path:
C:\users\{user}\appdata\local\microsoft\windows\temporary internet files\content.ie5\{random}\c.exe

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):
24576:4Erv1So8AgrtXMpxMIvNGSTKfz7Q0al4BwuGOciU8SMWgQyuwwLG:4cNSoSJXM/MIFvTKfI0aGwTO5U8SMWXo

Entry address:
0x9C40

Entry point:
55, 8B, EC, 83, C4, C4, 53, 56, 57, 33, C0, 89, 45, F0, 89, 45, DC, E8, 86, 94, FF, FF, E8, 8D, A6, FF, FF, E8, 1C, A9, FF, FF, E8, 53, C9, FF, FF, E8, 9A, C9, FF, FF, E8, C9, F2, FF, FF, E8, 30, F4, FF, FF, 33, C0, 55, 68, FC, A2, 40, 00, 64, FF, 30, 64, 89, 20, 33, D2, 55, 68, C5, A2, 40, 00, 64, FF, 32, 64, 89, 22, A1, 14, C0, 40, 00, E8, 96, FE, FF, FF, E8, C9, FA, FF, FF, 8D, 55, F0, 33, C0, E8, 83, CF, FF, FF, 8B, 55, F0, B8, 24, CE, 40, 00, E8, 32, 95, FF, FF, 6A, 02, 6A, 00, 6A, 01, 8B, 0D, 24, CE...
 
[+]

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

Code size:
37 KB (37,888 bytes)

The file c.exe has been seen being distributed by the following 2 URLs.

http://www.centralmegahead.com/c?x=6nwVSyoYG6VT6XEaecMGLxHRYw9SPYvzLuYfgQySDps=&c=KCLT8qVJt8bypo3YfIbqKMrLCDbGPGMFhlgqRKZaW35HePii8qHp4qjW7S8xeCKunuVtnGVxPFLA0Ze3EC4upR/X8/Yybt0tnpQfJLx5cuWM1qKu6pKRt2N2UC6yH9TuBMLsDBDInNTCbY0YIDI7/A==&fallback_url=http://get.geo.opera.com/pub/opera/desktop/34.0.2036.25/.../Opera_34.0.2036.25_Setup.exe&downloadAs=Opera-12614-dp.exe

http://www.towerworldtown.com/c?x=doHGP0IMlZOgkFRtB8JlMst8gao1LwlF3hPddy0 H1A=&c=g6gS9 HAGM5 UKPdpH1WqzmOV/6/yT6Z8YccxN7awxjZg632aaHCAYdX45b8qln7/FXXjOT50T 9mCSHR9iWcE8DAO/pE/kpB9OZHPRJnQKKjoy4XbjyCLh/njp0Tk9v&fallback_url=http://get.geo.opera.com/pub/opera/desktop/34.0.2036.25/.../Opera_34.0.2036.25_Setup.exe&downloadAs=Opera-12614-dp.exe

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