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greygray.gcupdate.dll

GreyGray

This is the Google Chrome extension manager/updater for the Yontoo GreyGray branded web browser plugin which injects banners, text-link and popup ads in the Chorme browser. The module greygray.gcupdate.dll by GreyGray has been detected as adware by 1 anti-malware scanner with very strong indications that the file is a potential threat.
Publisher:
GreyGray  (signed and verified)

Version:
1.0.5565.14750

MD5:
a230dab06ac689827b97fab451caef37

SHA-1:
da402727e10675eb2ff503f1550970a047a38232

SHA-256:
bd116b5ff41ada6dd3e75c4298875d7a3eb6fb72e114475f7b35c65ea3e7cd3b

Scanner detections:
1 / 68

Status:
Adware

Explanation:
Part of the Yontoo distributed ad-supported web browser extension for Chrome.

Analysis date:
4/25/2024 8:27:27 PM UTC  (today)

Scan engine
Detection
Engine version

Reason Heuristics
Adware.Yontoo.GreyGray (M)
16.2.13.19

File size:
1.4 MB (1,498,392 bytes)

Product version:
1.0.5565.14750

Original file name:
GreyGray.GCUpdate2015032816.dll

File type:
Dynamic link library (Win32 DLL)

Common path:
C:\Program Files\greygray\bin\plugins\greygray.gcupdate.dll

Digital Signature
Signed by:
GreyGray

Authority:
VeriSign, Inc.

Valid from:
9/19/2013 3:00:00 AM

Valid to:
9/20/2015 2:59:59 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:
3/28/2015 6:12:08 PM

OS version:
4.0

OS bitness:
Win32

Subsystem:
Windows Console

Linker version:
6.0

.NET CLR dependent:
Yes

CTPH (ssdeep):
24576:vmjjCu+pS0+M3tb0pvaep5ZkyllsQUfIKKuZAP2MED/kXljR+:Xu/0J3tCieD2y/sQxKbcEAljE

Entry address:
0x16DBAE

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, D0, 16, 00, 0C, 00, 00, 00, B0, 3B, 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...
 
[+]

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

Code size:
1.4 MB (1,489,920 bytes)

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