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{4d3841bc-4944-4fdd-9883-c33de0b9f932}.dll

Lucky Bright

Part of the Yontoo adware component, a web browser plugin that injects unwanted ads in the browser. The module {4d3841bc-4944-4fdd-9883-c33de0b9f932}.dll by Lucky Bright has been detected as adware by 1 anti-malware scanner with very strong indications that the file is a potential threat. It is also typically executed from the user's temporary directory.
Publisher:
Lucky Bright  (signed and verified)

Version:
1.0.5772.39248

MD5:
3460b2c9cf4e68637c5b97a06c125f84

SHA-1:
b60ee5a0a24d7a14a33d616674f6d11035318ba1

SHA-256:
5c59763fcdcb40a1ba47b8f83ae8328ef999948e2e99da183cf14ce4a106e6c1

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:
4/19/2024 2:00:42 PM UTC  (today)

Scan engine
Detection
Engine version

Reason Heuristics
PUP.Yontoo (M)
17.3.12.14

File size:
497.2 KB (509,152 bytes)

Product version:
1.0.5772.39248

File type:
Dynamic link library (Win32 DLL)

Language:
English (United States)

Common path:
C:\users\{user}\appdata\local\temp\{4d3841bc-4944-4fdd-9883-c33de0b9f932}.dll

Digital Signature
Signed by:
Lucky Bright

Authority:
VeriSign, Inc.

Valid from:
6/19/2015 5:00:00 AM

Valid to:
6/19/2016 4:59:59 AM

Subject:
CN=Lucky Bright, O=Lucky Bright, L=Los Angeles, 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:
071EC58D2C0C7C068666729CAC608B70

File PE Metadata
Compilation timestamp:
10/22/2015 9:48:28 AM

OS version:
5.1

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
12.0

Entry address:
0x18B78

Entry point:
55, 8B, EC, 83, 7D, 0C, 01, 75, 05, E8, BA, 9B, 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, 10, CD, 04, 10, E8, A9, 22, 00, 00, 33, C0, 40, 8B, 75, 0C, 85, F6, 75, 0C, 39, 35, AC, 83, 07, 10, 0F, 84, E4, 00, 00, 00, 83, 65, FC, 00, 83, FE, 01, 74, 05, 83, FE, 02, 75, 35, 8B, 0D, 90, 39, 04, 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:
5.3962

Developed / compiled with:
Microsoft Visual C++

Code size:
254 KB (260,096 bytes)

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