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adobe_flash_setup.exe

OOO TehSnab

The installer utilizes the installCore download manager which may bundle additional offers for various ad-supported toolbars, extensions and utilities. The application adobe_flash_setup.exe by OOO TehSnab 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 installCore installer. The file has been seen being downloaded from updatemaster.com.
Publisher:
OOO TehSnab  (signed and verified)

MD5:
0928650e6855e99854d689d138533034

SHA-1:
8efbe8dc97733472441bb04636a3ee68eaa7e8da

SHA-256:
d21ee6b2a581aa9f6b229916bb64d5239a2707e407269cd48a326fa284e2c340

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:
5/4/2024 7:08:08 PM UTC  (today)

Scan engine
Detection
Engine version

Reason Heuristics
PUP.installCore.OOOTehSn.Installer (M)
16.3.25.1

File size:
877.5 KB (898,600 bytes)

Product version:
1.5

File type:
Executable application (Win32 EXE)

Bundler/Installer:
installCore (using Inno Setup)

Language:
Language Neutral

Common path:
C:\users\{user}\downloads\adobe_flash_setup.exe

Digital Signature
Signed by:
OOO TehSnab

Authority:
Thawte, Inc.

Valid from:
10/8/2014 1:00:00 AM

Valid to:
10/9/2015 12:59:59 AM

Subject:
CN=OOO TehSnab, O=OOO TehSnab, L=Moscow, S=Moscow, C=RU

Issuer:
CN=Thawte Code Signing CA - G2, O="Thawte, Inc.", C=US

Serial number:
1B3AE09C419260E223EA4701F7A75ECE

File PE Metadata
Compilation timestamp:
6/19/1992 11:22:17 PM

OS version:
1.0

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
2.25

CTPH (ssdeep):
24576:SFYEG6p1agGmDmkhB92B3gdiSUy4lvy2iPYHA2:SSJe1EmDmkh2VoiSUv1XHR

Entry address:
0x9C40

Entry point:
55, 8B, EC, 83, C4, C4, 53, 56, 57, 33, C0, 89, 45, F0, 89, 45, DC, E8, 86, 94, FF, FF, E8, 8D, A6, FF, FF, E8, 1C, A9, FF, FF, E8, 53, C9, FF, FF, E8, 9A, C9, FF, FF, E8, C9, F2, FF, FF, E8, 30, F4, FF, FF, 33, C0, 55, 68, FC, A2, 40, 00, 64, FF, 30, 64, 89, 20, 33, D2, 55, 68, C5, A2, 40, 00, 64, FF, 32, 64, 89, 22, A1, 14, C0, 40, 00, E8, 96, FE, FF, FF, E8, C9, FA, FF, FF, 8D, 55, F0, 33, C0, E8, 83, CF, FF, FF, 8B, 55, F0, B8, 24, CE, 40, 00, E8, 32, 95, FF, FF, 6A, 02, 6A, 00, 6A, 01, 8B, 0D, 24, CE...
 
[+]

Packer / compiler:
Inno Setup v5.x - Installer Maker

Code size:
37 KB (37,888 bytes)

The file adobe_flash_setup.exe has been seen being distributed by the following URL.

http://updatemaster.com/download.php?conversion_id=14152129241120&site_id=496&app_id=4&lp_id=517&v=ico&stub_id=26&dist_id=356&channel=mrk_frf&dast=YnJzcj0zODQxJmJvPTImc2xpZD0wJnN1YmlkPTIwMDE0MzQwNzQyMjAwMDAwMCZzbz0yJmNpY21wPTQ0MjIyOCZwdWJpZD02Mjk5OCZjdTQ9MiZjaXBpZD0yMDIyMDcwJmNpc2lkPUQ0OTlDNzg0QjQxNjI5NjA3MTI3OTQ5NTI1MCZjaXJpZD1ENDk5Qzc4NEI0MTYyOTYwODE1NTAyMDI2MzUmY2l1aWQ9LTQwMDAxNDg3ODIxMDQ5NzU1MSZjcmlkPTI4NTc0MDgmZXhjaWQ9MjImbW10PS0xJm9zaWQ9NTM0JmNudHJ5PTcz

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