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utilpacfunction.exe

PacFunction

Part of the Yontoo adware component, a web browser plugin that injects unwanted ads in the browser. The application utilpacfunction.exe by PacFunction has been detected as adware by 1 anti-malware scanner with very strong indications that the file is a potential threat.
Publisher:
PacFunction  (signed and verified)

Version:
1.0.5400.14330

MD5:
37b944042abd8ec4426ae2e96a0d5876

SHA-1:
cb7188709b85b088fa175fdc8845cf56b2668cfe

SHA-256:
1864adb06b7469e97ffa533c182da01d7fb45aadce89fef6934715324b94152d

Scanner detections:
1 / 68

Status:
Adware

Explanation:
Belongs to the Sambreel/Yontoo progam that inserts various forms of advertising in the user's web browser, installed with minimal or no user consent.

Analysis date:
12/24/2024 1:09:37 PM UTC  (today)

Scan engine
Detection
Engine version

Reason Heuristics
PUP.Yontoo (M)
17.3.13.5

File size:
510.3 KB (522,528 bytes)

Product version:
1.0.5400.14330

Original file name:
PacFunction.exe

File type:
Executable application (Win32 EXE)

Common path:
C:\Program Files\pacfunction\bin\utilpacfunction.exe

Digital Signature
Signed by:
PacFunction

Authority:
VeriSign, Inc.

Valid from:
1/8/2014 6:00:00 PM

Valid to:
1/9/2015 5:59:59 PM

Subject:
CN=PacFunction, OU=Digital ID Class 3 - Microsoft Software Validation v2, O=PacFunction, L=San Diego, S=California, C=US

Issuer:
CN=VeriSign Class 3 Code Signing 2010 CA, OU=Terms of use at https://www.verisign.com/rpa (c)10, OU=VeriSign Trust Network, O="VeriSign, Inc.", C=US

Serial number:
4DF47FADF68D2EB9B8A7923DCCC176FF

File PE Metadata
Compilation timestamp:
10/14/2014 9:57:44 AM

OS version:
4.0

OS bitness:
Win32

Subsystem:
Windows Console

Linker version:
6.0

.NET CLR dependent:
Yes

Entry address:
0x7F446

Entry point:
FF, 25, 00, 20, 40, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 02, 00, 00, 00, 5E, 00, 00, 00, 88, F4, 07, 00, 88, D6, 07, 00, 52, 53, 44, 53, CC, EE, 80, B1, 15, E1, 7D, 45, A5, 6F, BF, CA, 11, EE, A5, 6A, 01, 00, 00, 00, 44, 3A, 5C, 55, 74, 69, 6C, 69, 74, 69, 65, 73, 5C, 68, 64, 6E, 6A, 68, 31, 65, 73, 2E, 6F, 31, 31, 5C, 44, 65, 73, 6B, 74, 6F, 70, 5C, 44, 65, 73, 6B...
 
[+]

Entropy:
5.9244

Developed / compiled with:
Microsoft Visual C# / Basic .NET

Code size:
501.5 KB (513,536 bytes)

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