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546c9d5ed39549841c941a7cb28bda8621bb5bb43b87bb3b7e6fa8ef257dc5c9

Tab Station

yearsoft

Part of the Yontoo adware component, a web browser plugin that injects unwanted ads in the browser. The file 546c9d5ed39549841c941a7cb28bda8621bb5bb43b87bb3b7e6fa8ef257dc5c9, “Tab Station Apply” by yearsoft has been detected as adware by 1 anti-malware scanner with very strong indications that the file is a potential threat.
Publisher:
tabstation  (signed by yearsoft)

Product:
Tab Station

Description:
Tab Station Apply

Version:
1.1.0.1

MD5:
b6e349ce01089f1fab53b47ac84d73bf

SHA-1:
d98fa2a001d3a80a8034492cf50c03194ceacf8b

SHA-256:
546c9d5ed39549841c941a7cb28bda8621bb5bb43b87bb3b7e6fa8ef257dc5c9

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:
11/19/2025 7:55:38 AM UTC  (today)

Scan engine
Detection
Engine version

Reason Heuristics
PUP.Yontoo.yearsoft (M)
16.6.3.16

File size:
16.1 KB (16,440 bytes)

Product version:
1.1.0.1

Copyright:
tabstation

Language:
Korean (Korea)

Digital Signature
Signed by:
yearsoft

Authority:
Thawte, Inc.

Valid from:
7/16/2013 5:00:00 PM

Valid to:
7/17/2014 4:59:59 PM

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:
028FB214E3C57F518427378946E58BA7

File PE Metadata
Compilation timestamp:
7/15/2013 7:05:04 PM

OS version:
5.1

OS bitness:
Win32

Subsystem:
Windows Console

Linker version:
10.0

CTPH (ssdeep):
384:p+i1X3sKHcar+6SH1V3+AnwuSuSPLkxgm:ZcKHxrlSjtwuHxgm

Entry address:
0x1A91

Entry point:
E8, 83, 04, 00, 00, E9, B3, FD, FF, FF, 8B, FF, 55, 8B, EC, 81, EC, 28, 03, 00, 00, A3, 40, 31, 40, 00, 89, 0D, 3C, 31, 40, 00, 89, 15, 38, 31, 40, 00, 89, 1D, 34, 31, 40, 00, 89, 35, 30, 31, 40, 00, 89, 3D, 2C, 31, 40, 00, 66, 8C, 15, 58, 31, 40, 00, 66, 8C, 0D, 4C, 31, 40, 00, 66, 8C, 1D, 28, 31, 40, 00, 66, 8C, 05, 24, 31, 40, 00, 66, 8C, 25, 20, 31, 40, 00, 66, 8C, 2D, 1C, 31, 40, 00, 9C, 8F, 05, 50, 31, 40, 00, 8B, 45, 00, A3, 44, 31, 40, 00, 8B, 45, 04, A3, 48, 31, 40, 00, 8D, 45, 08, A3, 54, 31, 40...
 
[+]

Entropy:
6.4475

Code size:
4 KB (4,096 bytes)

herdProtect is a second line of defense malware removal platform powered by 68 anti-malware engines in the cloud. Since no single anti-malware program is perfect 100% of the time, herdProtect utilizes a 'herd' of multiple engines to guarantee the widest coverage and the earliest possible detection.