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surftastic.expextdll.dll

Surftastic

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

Version:
1.0.5477.24246

MD5:
b48ba0c78a238a4adbd41e1128a0e6d5

SHA-1:
3ae1f10b470d2719cdcabc3b732354d6fdaafb4f

SHA-256:
5e8c3b481cf291d834c81b90a73e11ba10a98412ebee691bf94a63b451042933

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:
5/5/2024 8:21:01 AM UTC  (today)

Scan engine
Detection
Engine version

Reason Heuristics
Adware.Yontoo (M)
17.3.14.10

File size:
80.2 KB (82,160 bytes)

Product version:
1.0.5477.24246

File type:
Dynamic link library (Win32 DLL)

Language:
English (United States)

Common path:
C:\Program Files\surftastic\bin\surftastic.expextdll.dll

Digital Signature
Signed by:
Surftastic

Authority:
VeriSign, Inc.

Valid from:
12/23/2014 8:00:00 AM

Valid to:
1/23/2016 7:59:59 AM

Subject:
CN=Surftastic, O=Surftastic, 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:
5075CED200701322868158A770FEC231

File PE Metadata
Compilation timestamp:
12/31/2014 5:28:27 AM

OS version:
5.1

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
10.0

Entry address:
0x3820

Entry point:
8B, FF, 55, 8B, EC, 83, 7D, 0C, 01, 75, 05, E8, 1E, 2F, 00, 00, FF, 75, 08, 8B, 4D, 10, 8B, 55, 0C, E8, EC, FE, FF, FF, 59, 5D, C2, 0C, 00, 8B, FF, 55, 8B, EC, 83, EC, 20, 8B, 45, 08, 56, 57, 6A, 08, 59, BE, 70, D2, 00, 10, 8D, 7D, E0, F3, A5, 89, 45, F8, 8B, 45, 0C, 5F, 89, 45, FC, 5E, 85, C0, 74, 0C, F6, 00, 08, 74, 07, C7, 45, F4, 00, 40, 99, 01, 8D, 45, F4, 50, FF, 75, F0, FF, 75, E4, FF, 75, E0, FF, 15, 80, D0, 00, 10, C9, C2, 08, 00, B8, 93, 72, 00, 10, A3, D8, 19, 01, 10, C7, 05, DC, 19, 01, 10, 89...
 
[+]

Entropy:
6.3881

Code size:
47.5 KB (48,640 bytes)

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