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5b1b.tmp

Best InsTall TlL

This is the OutBrowse Revenyou installer which bundles offers for additional third party applications that may be unwanted and installed without consent. The file 5b1b.tmp by Best InsTall TlL 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.
Publisher:
UCIEO  (signed by Best InsTall TlL)

Product:
UCIEO

Version:
7983.15612.1192.1527

MD5:
ebddd98fac11d1c55feca8f3d04a8c46

SHA-1:
5596eebf6d4ffe3aa2c830726431bfcb5390c79f

SHA-256:
e711a528e9b90891019a008b3465dc3a974c7b268c7dc600829b0b94be2c0af2

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 'download manager' is also considered bundleware, a utility designed to download software (possibly legitimate or opensource) and bundle it with a number of optional offers including ad-supported utilities, toolbars, shopping comparison tools and browser extensions.

Analysis date:
5/18/2024 9:53:27 AM UTC  (today)

Scan engine
Detection
Engine version

Reason Heuristics
PUP.Outbrowse.BestInsTallTlL (M)
16.2.15.0

File size:
727.8 KB (745,280 bytes)

Product version:
7983.15612.1192.1527

Copyright:
UCIEO

Trademarks:
UCIEO

Bundler/Installer:
OutBrowse Revenyou (using Nullsoft Install System)

Language:
Language Neutral

Common path:
C:\users\{user}\downloads\5b1b.tmp

Digital Signature
Signed by:
Best InsTall TlL

Authority:
thawte, Inc.

Valid from:
6/10/2015 9:00:00 PM

Valid to:
1/27/2016 9:59:59 PM

Subject:
CN=Best InsTall TlL, O=Best InsTall TlL, L=Dublin, S=Dublin, C=IE

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

Serial number:
5885AEDAB76FCBE66BA1470CF1111E60

File PE Metadata
Compilation timestamp:
12/5/2009 8:52:12 PM

OS version:
4.0

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
6.0

CTPH (ssdeep):
12288:j5gOl70lXUYGkPvJT2vDMpB2dOnh+4HpnC85YAXdE52szy/eCnQRfc8vy4h:j5p0iYvP92Ivnh+IAeKpz0Zl86

Entry address:
0x30FA

Entry point:
81, EC, 80, 01, 00, 00, 53, 55, 56, 33, DB, 57, 89, 5C, 24, 18, C7, 44, 24, 10, 60, 91, 40, 00, 33, F6, C6, 44, 24, 14, 20, FF, 15, 30, 70, 40, 00, 68, 01, 80, 00, 00, FF, 15, B0, 70, 40, 00, 53, FF, 15, 7C, 72, 40, 00, 6A, 08, A3, 18, 1C, 45, 00, E8, F1, 2B, 00, 00, A3, 64, 1B, 45, 00, 53, 8D, 44, 24, 34, 68, 60, 01, 00, 00, 50, 53, 68, 98, 37, 43, 00, FF, 15, 58, 71, 40, 00, 68, 54, 91, 40, 00, 68, 60, DB, 44, 00, E8, A4, 28, 00, 00, FF, 15, AC, 70, 40, 00, BF, 00, A0, 47, 00, 50, 57, E8, 92, 28, 00, 00...
 
[+]

Packer / compiler:
Nullsoft install system v2.x

Code size:
23.5 KB (24,064 bytes)

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