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greygrayun.exe

GreyGray

Part of the Yontoo adware component, a web browser plugin that injects unwanted ads in the browser. The application greygrayun.exe by GreyGray has been detected as adware by 1 anti-malware scanner with very strong indications that the file is a potential threat. This is the uninstaller utility registered in the Windows Control Panel for the program GreyGray 2013.11.07.204235 by GreyGray.
Publisher:
GreyGray  (signed and verified)

Version:
1.0.0.0

MD5:
00d380405c0eacd7361e96cd80f78583

SHA-1:
5152c0e1dffa500d0f524be9600dfba4baa5f42a

SHA-256:
be64992f4e900950c84bb38bd982ebfe6fc2bc344c340d451cf0af7021be09ba

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:
4/18/2024 10:42:18 PM UTC  (today)

Scan engine
Detection
Engine version

Reason Heuristics
PUP.Yontoo.GreyGray (M)
16.2.15.18

File size:
529.8 KB (542,488 bytes)

Product version:
1.0.0.0

Original file name:
GreyGray Uninstaller.exe

File type:
Executable application (Win32 EXE)

Language:
Language Neutral

Common path:
C:\Program Files\greygray\greygrayun.exe

Digital Signature
Signed by:
GreyGray

Authority:
VeriSign, Inc.

Valid from:
9/19/2013 1:00:00 AM

Valid to:
9/20/2015 12:59:59 AM

Subject:
CN=GreyGray, OU=Digital ID Class 3 - Microsoft Software Validation v2, O=GreyGray, 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:
23FF62A16C638B371A4AB98A8F876E8B

File PE Metadata
Compilation timestamp:
7/24/2015 4:30:27 AM

OS version:
4.0

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
11.0

.NET CLR dependent:
Yes

CTPH (ssdeep):
6144:A8FBDpthGpV5scs9AhqggamFgcObmfHVM1HR/H3S1V4PM5AJypnW/2cQr0tZ5/aj:A8FBDpthGpV5sH9AhfEj1QXJ0Qr5N1b4

Entry address:
0x8268E

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, 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, 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...
 
[+]

Entropy:
5.9625

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

Code size:
514 KB (526,336 bytes)

Program Uninstaller
Program name:
GreyGray 2013.11.07.204235

Display publisher:
GreyGray

Display version:
2013.11.07.204235

Uninstall string:
C:\Program Files (x86)\GreyGray\GreyGrayUn.exe OFS_


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