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f_0000b8

Cpc Net Advertising LLC

The installer utilizes the installCore download manager which may bundle additional offers for various ad-supported toolbars, extensions and utilities. The file f_0000b8 by Cpc Net Advertising 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 installCore installer. It is also typically executed from the user's temporary directory. The file has been seen being downloaded from ccleaner.version-gratuit.com.
Publisher:
Cpc Net Advertising LLC  (signed and verified)

MD5:
66411e6cd113f361955b7ea426d686a7

SHA-1:
989ba833b9d813d437c4ceee05ed5e9981f9af21

SHA-256:
2de17b6f959bf7e54b0087e509b596c383605a3f596c06c436b80b20d42b58e8

Scanner detections:
1 / 68

Status:
Potentially unwanted

Note:
Our current pool of anti-malware engines have not currently detected this file, however based on our own detection heuristics we feel that this file is unwanted.

Description:
This is also known as bundleware, or downloadware, which is an downloader designed to simply deliver ad-supported offers in the setup routine of an otherwise legitimate software.

Analysis date:
5/16/2024 8:54:10 PM UTC  (today)

Scan engine
Detection
Engine version

Reason Heuristics
PUP.installCore.CpcNetAd (M)
16.5.11.3

File size:
1.3 MB (1,412,704 bytes)

Bundler/Installer:
installCore (using Nullsoft Install System)

Common path:
C:\users\{user}\appdata\local\temp\{random}.tmp\temp\webkit\cache\f_0000b8

Digital Signature
Signed by:
Cpc Net Advertising LLC

Authority:
thawte, Inc.

Valid from:
7/1/2015 2:00:00 AM

Valid to:
7/1/2016 1:59:59 AM

Subject:
CN=Cpc Net Advertising LLC, OU=IT, O=Cpc Net Advertising LLC, L=Wilmington, S=Delaware, C=US

Issuer:
CN=thawte SHA256 Code Signing CA, O="thawte, Inc.", C=US

Serial number:
2BC1DD7AA35DE89A0D5276ECD7AE32AF

File PE Metadata
Compilation timestamp:
12/5/2009 11:50:41 PM

OS version:
4.0

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
6.0

CTPH (ssdeep):
24576:+O8WuWAPbBvuzsRYXZ/qpUTTCXnA5kIm40MO/Yt8vvOrRU5w5848W:cKAbDGXs+CwDmPf/YqmrRUQt

Entry address:
0x30CB

Entry point:
81, EC, 80, 01, 00, 00, 53, 55, 56, 33, DB, 57, 89, 5C, 24, 18, C7, 44, 24, 10, 60, 91, 40, 00, 33, F6, C6, 44, 24, 14, 20, FF, 15, 30, 70, 40, 00, 68, 01, 80, 00, 00, FF, 15, B0, 70, 40, 00, 53, FF, 15, 7C, 72, 40, 00, 6A, 08, A3, 38, 3F, 42, 00, E8, F1, 2B, 00, 00, A3, 84, 3E, 42, 00, 53, 8D, 44, 24, 34, 68, 60, 01, 00, 00, 50, 53, 68, 30, F4, 41, 00, FF, 15, 58, 71, 40, 00, 68, 54, 91, 40, 00, 68, 80, 36, 42, 00, E8, A4, 28, 00, 00, FF, 15, AC, 70, 40, 00, BF, 00, 90, 42, 00, 50, 57, E8, 92, 28, 00, 00...
 
[+]

Packer / compiler:
Nullsoft install system v2.x

Code size:
22.5 KB (23,040 bytes)

The file f_0000b8 has been seen being distributed by the following URL.

http://ccleaner.version-gratuit.com/.../ccleaner-setup.exe

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