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nstb0b3.tmp

MAXTEK LLC

This is the OutBrowse Revenyou installer which bundles offers for additional third party applications that may be unwanted and installed without consent. The file nstb0b3.tmp by MAXTEK has been detected as adware by 1 anti-malware scanner with very strong indications that the file is a potential threat. The program is a setup application that uses the OutBrowse Revenyou installer. It is also typically executed from the user's temporary directory.
Publisher:
MAXTEK LLC  (signed and verified)

MD5:
23e968da43465c03aca684450b7fee38

SHA-1:
427f757859d37ce50f7557af239064286f6e8066

SHA-256:
4438c5c54f87abc13b4b73579fa456e0ab3262c09ee73a534a11fc4a915e8dd3

Scanner detections:
1 / 68

Status:
Adware

Note:
Our current pool of anti-malware engines have not currently detected this file, however based on our own detection heuristics we feel that this file is unwanted.

Description:
This is an installer which may bundle legitimate applications with offers for additional 3rd-party applications that may be unwanted by the user. While the installer contains an 'opt-out' feature this is not set be defult and is usually overlooked.

Analysis date:
12/26/2024 4:11:17 AM UTC  (today)

Scan engine
Detection
Engine version

Reason Heuristics
PUP.Outbrowse (M)
17.3.13.11

File size:
3.6 MB (3,798,264 bytes)

Bundler/Installer:
OutBrowse Revenyou

Common path:
C:\users\{user}\appdata\local\temp\nstb0b3.tmp

Digital Signature
Signed by:
MAXTEK LLC

Authority:
thawte, Inc.

Valid from:
12/29/2014 3:00:00 AM

Valid to:
12/30/2015 2:59:59 AM

Subject:
CN=MAXTEK LLC, O=MAXTEK LLC, L=Kharkiv, S=New Brunswick, C=UA

Issuer:
CN=thawte SHA256 Code Signing CA, O="thawte, Inc.", C=US

Serial number:
5E330605B7CB3B14509516AEA2289E49

File PE Metadata
Compilation timestamp:
6/20/1992 2:22:17 AM

OS version:
4.0

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
2.25

Entry address:
0x238394

Entry point:
55, 8B, EC, 83, C4, EC, 53, 56, 57, 33, C0, 89, 45, EC, B8, FC, 7A, 63, 00, E8, D4, F6, DC, FF, 33, C0, 55, 68, 60, 86, 63, 00, 64, FF, 30, 64, 89, 20, BE, 00, 04, 00, 00, 56, B8, E8, 59, 65, 00, B9, 01, 00, 00, 00, 8B, 15, 4C, 7A, 63, 00, E8, 87, E6, DC, FF, 83, C4, 04, 8B, C6, 83, E8, 01, 71, 05, E8, 38, BC, DC, FF, 85, C0, 7C, 1C, 40, 33, DB, 8B, 15, E8, 59, 65, 00, C7, 04, DA, B9, 8D, 06, F0, C7, 44, DA, 04, 16, 18, 59, 40, 43, 48, 75, E7, A1, E8, 59, 65, 00, DD, 00, D8, 0D, 70, 86, 63, 00, A1, E8, 59...
 
[+]

Developed / compiled with:
Microsoft Visual C++

Code size:
2.2 MB (2,324,480 bytes)

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