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sammyr.exe

Sub Shop Application

yearsoft

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

Product:
Sub Shop Application

Version:
1.0.0.2

MD5:
82d2f3c3aef6055407e71e9d8b1e9f46

SHA-1:
705c4618e6e8df9a65f4d4e3cbf5f4396161a868

SHA-256:
b6f7d579867beaa8944a6534f4a2efa1d08a62ebd6bb5641cd423125c7e1967b

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:
4/24/2024 8:25:52 AM UTC  (today)

Scan engine
Detection
Engine version

Reason Heuristics
PUP.Yontoo.yearsoft (M)
16.2.14.19

File size:
3.7 MB (3,834,400 bytes)

Product version:
1.1.1.0

Copyright:
yearsoft. All rights reserved.

Original file name:
Sub Shop

File type:
Executable application (Win32 EXE)

Common path:
C:\users\{user}\appdata\roaming\sammy\sammyr.exe

Digital Signature
Signed by:
yearsoft

Authority:
Thawte, Inc.

Valid from:
6/21/2013 9:00:00 AM

Valid to:
6/22/2014 8:59:59 AM

Subject:
CN=yearsoft, OU=IT Team, O=yearsoft, L=Ansan-si, S=Gyeonggi-do, C=KR

Issuer:
CN=Thawte Code Signing CA - G2, O="Thawte, Inc.", C=US

Serial number:
1D640099747B7B0113E4E8A226D9C798

File PE Metadata
Compilation timestamp:
11/22/2013 9:17:45 PM

OS version:
5.1

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
11.0

CTPH (ssdeep):
98304:a3tSHfsWk3pTTYMFTrSJg/VGFLOAkGkzdnEVomFHKnPWTw:d/5k1nSJg/VGFLOyomFHKnPsw

Entry address:
0x13258B

Entry point:
E8, 0F, BE, 00, 00, E9, 00, 00, 00, 00, 6A, 14, 68, A8, 4B, 5A, 00, E8, FF, 12, 00, 00, E8, E6, 9D, 00, 00, 0F, B7, F0, 6A, 02, E8, A2, BD, 00, 00, 59, B8, 4D, 5A, 00, 00, 66, 39, 05, 00, 00, 40, 00, 74, 04, 33, DB, EB, 33, A1, 3C, 00, 40, 00, 81, B8, 00, 00, 40, 00, 50, 45, 00, 00, 75, EB, B9, 0B, 01, 00, 00, 66, 39, 88, 18, 00, 40, 00, 75, DD, 33, DB, 83, B8, 74, 00, 40, 00, 0E, 76, 09, 39, 98, E8, 00, 40, 00, 0F, 95, C3, 89, 5D, E4, E8, 71, 5A, 00, 00, 85, C0, 75, 08, 6A, 1C, E8, DC, 00, 00, 00, 59, E8...
 
[+]

Entropy:
6.7950

Code size:
1.4 MB (1,420,800 bytes)

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