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ttessab.dll

Ttessab

Part of the Yontoo adware component, a web browser plugin that injects unwanted ads in the browser. The module ttessab.dll by Ttessab has been detected as adware by 6 anti-malware scanners. It will plug into the web browser and display context-based advertisements by overwriting existing ads or by inserting new ones on various web pages. The file has been seen being downloaded from install-cdn.ttessab.net.
Publisher:
Ttessab  (signed and verified)

Product:
Ttessab

Version:
1.0.0.7

MD5:
f65f3e6603cd0e178dc3637b95f7854e

SHA-1:
63e47ccf38876d2f2891fae219cecac7bcce23cc

SHA-256:
8eed16ffa0410301d86a4b8edc89d259d2626cba03bb4d8b6b3652b45263b25c

Scanner detections:
6 / 68

Status:
Adware

Explanation:
Injects advertising in the web browser in various formats.

Analysis date:
5/5/2024 4:11:28 PM UTC  (today)

Scan engine
Detection
Engine version

Lavasoft Ad-Aware
Adware.BrowseFox.BN
6422822

Emsisoft Anti-Malware
Adware.BrowseFox.BN
9.0.0.4799

ESET NOD32
Win32/BrowseFox.AE potentially unwanted application
7.0.302.0

F-Secure
Adware.BrowseFox.BN
5.13.68

Reason Heuristics
PUP.Yontoo
15.2.9.17

VIPRE Antivirus
Threat.4741131
37240

File size:
262.8 KB (269,080 bytes)

Product version:
1.0.0.7

Copyright:
(c) Ttessab. All rights reserved.

File type:
Dynamic link library (Win32 DLL)

Language:
English (United States)

Common path:
C:\users\{user}\appdata\local\microsoft\windows\inetcache\content.ie5\8335id58\ttessab.dll

Digital Signature
Signed by:
Ttessab

Authority:
VeriSign, Inc.

Valid from:
9/19/2013 2:00:00 AM

Valid to:
9/20/2015 1:59:59 AM

Subject:
CN=Ttessab, OU=Digital ID Class 3 - Microsoft Software Validation v2, O=Ttessab, 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:
198AA4CA33AF1FC06C47646A032C938B

File PE Metadata
Compilation timestamp:
2/7/2015 7:38:28 PM

OS version:
6.0

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
11.0

CTPH (ssdeep):
3072:u/imUl9JriXzSVBQbHHqeRB+4km63Av+SkAZZKTTR+dacEh:u/imUV+jSVGnqeau++ZEyZG

Entry address:
0xF515

Entry point:
55, 8B, EC, 83, 7D, 0C, 01, 75, 05, E8, EA, 7E, 00, 00, FF, 75, 10, FF, 75, 0C, FF, 75, 08, E8, 07, 00, 00, 00, 83, C4, 0C, 5D, C2, 0C, 00, 6A, 0C, 68, A8, 21, 03, 10, E8, 4C, 02, 00, 00, 33, C0, 40, 8B, 75, 0C, 85, F6, 75, 0C, 39, 35, 0C, 77, 03, 10, 0F, 84, E4, 00, 00, 00, 83, 65, FC, 00, 83, FE, 01, 74, 05, 83, FE, 02, 75, 35, 8B, 0D, C4, 93, 02, 10, 85, C9, 74, 0C, FF, 75, 10, 56, FF, 75, 08, FF, D1, 89, 45, E4, 85, C0, 0F, 84, B1, 00, 00, 00, FF, 75, 10, 56, FF, 75, 08, E8, 11, FE, FF, FF, 89, 45, E4...
 
[+]

Entropy:
6.0698

Developed / compiled with:
Microsoft Visual C++

Code size:
159 KB (162,816 bytes)

The file ttessab.dll has been seen being distributed by the following URL.

http://install-cdn.ttessab.net/bed?r=2015020817&bet=3

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