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maintainer.bak

diamondata

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

Version:
1.0.5675.25685

MD5:
0df7f2c9a5ba5526a5ba7da35e102089

SHA-1:
794b4123889beec68196dabc724b76b0c040f8a2

SHA-256:
eb690ae3b82bec8db1c9b0307f2e17aa51c609cd6b6dd7ff55f896127a63b302

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:
12/23/2024 4:53:32 PM UTC  (today)

Scan engine
Detection
Engine version

Reason Heuristics
PUP.Yontoo (M)
17.3.12.16

File size:
125.3 KB (128,288 bytes)

Product version:
1.0.5675.25685

Language:
English (United States)

Common path:
C:\ProgramData\1853b119-6642-4864-b94f-72c3cdc10399\maintainer.bak

Digital Signature
Signed by:
diamondata

Authority:
VeriSign, Inc.

Valid from:
8/13/2013 3:00:00 AM

Valid to:
8/14/2015 2:59:59 AM

Subject:
CN=diamondata, OU=Digital ID Class 3 - Microsoft Software Validation v2, O=diamondata, 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:
013DE313C00D49CFC0FA964B3315CD82

File PE Metadata
Compilation timestamp:
7/17/2015 12:16:15 AM

OS version:
5.1

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
11.0

Entry address:
0x9872

Entry point:
E8, 75, 62, 00, 00, E9, 7F, FE, FF, FF, 55, 8B, EC, 81, EC, 28, 03, 00, 00, A1, 68, C2, 41, 00, 33, C5, 89, 45, FC, 83, 7D, 08, FF, 57, 74, 09, FF, 75, 08, E8, 59, 50, 00, 00, 59, 83, A5, E0, FC, FF, FF, 00, 6A, 4C, 8D, 85, E4, FC, FF, FF, 6A, 00, 50, E8, 7A, F3, FF, FF, 8D, 85, E0, FC, FF, FF, 89, 85, D8, FC, FF, FF, 8D, 85, 30, FD, FF, FF, 83, C4, 0C, 89, 85, DC, FC, FF, FF, 89, 85, E0, FD, FF, FF, 89, 8D, DC, FD, FF, FF, 89, 95, D8, FD, FF, FF, 89, 9D, D4, FD, FF, FF, 89, B5, D0, FD, FF, FF, 89, BD, CC...
 
[+]

Entropy:
6.2063

Code size:
72.5 KB (74,240 bytes)

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