updategrassmow.exe

grassmow

Part of the Yontoo web browser plugin (delivers advertisements to the web browser in the form of injected banners, text-links, popups, etc.) the updater mechanism for grassmow will automatically keep the extension patched by downloaded new functionality which is auto-enabled by default. The application updategrassmow.exe by grassmow has been detected as adware by 1 anti-malware scanner with very strong indications that the file is a potential threat. It runs as a separate (within the context of its own process) windows Service named “Update grassmow”.
Publisher:
grassmow  (signed and verified)

Version:
1.0.5352.28371

MD5:
38045f4f42fb61a5b2b60a426613f2f5

SHA-1:
913d9d0c63aea2793aa65d66daa3a5b3f67c5111

SHA-256:
8cc8891d13dda2fa63e9049f31cd4bdf733a653c8d7ad86dc8000d427ce165c0

Scanner detections:
1 / 68

Status:
Adware

Explanation:
Part of the Yontoo adware web browser extension update process.

Analysis date:
11/27/2024 1:16:57 AM UTC  (today)

Scan engine
Detection
Engine version

Reason Heuristics
Adware.Yontoo (M)
16.12.25.20

File size:
315.8 KB (323,360 bytes)

Product version:
1.0.5352.28371

Original file name:
grassmow.exe

File type:
Executable application (Win32 EXE)

Language:
Language Neutral

Common path:
C:\Program Files\grassmow\updategrassmow.exe

Digital Signature
Signed by:

Authority:
VeriSign, Inc.

Valid from:
4/28/2014 8:00:00 PM

Valid to:
4/29/2015 7:59:59 PM

Subject:
CN=grassmow, OU=Digital ID Class 3 - Microsoft Software Validation v2, O=grassmow, L=Santa Monica, 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:
46F979858F2F3241487CBA3EF684BAE8

File PE Metadata
Compilation timestamp:
8/27/2014 12:45:59 PM

OS version:
4.0

OS bitness:
Win32

Subsystem:
Windows Console

Linker version:
8.0

.NET CLR dependent:
Yes

Entry address:
0x4EBA2

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, 02, 00, 10, 00, 00, 00, 20, 00, 00, 80, 18, 00, 00, 00, D8, 02, 00, 80, 00, 00...
 
[+]

Entropy:
6.0899

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

Code size:
307 KB (314,368 bytes)

Service
Display name:
Update grassmow

Type:
Win32OwnProcess


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