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yahoomail_setup.exe

Secure Installer

The installer utilizes the installCore download manager which may bundle additional offers for various ad-supported toolbars, extensions and utilities. The application yahoomail_setup.exe by Secure Installer has been detected as a potentially unwanted program 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 downloader.inbox2me.com.
Publisher:
Secure Installer  (signed and verified)

MD5:
3da8bdb30d53389ddc6c9a6d13fd5983

SHA-1:
4a5c2b5827c458c89d7984ef04067aa969dd653a

SHA-256:
db7f4bb1876259c72381ff35a89a5e7e18991ebff4293270397cd459b14d4d7d

Scanner detections:
1 / 68

Status:
Potentially unwanted

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:
11/30/2024 10:36:23 AM UTC  (today)

Scan engine
Detection
Engine version

Reason Heuristics
PUP.installCore.SecureIn.Installer (M)
16.6.15.8

File size:
618.1 KB (632,968 bytes)

File type:
Executable application (Win32 EXE)

Bundler/Installer:
installCore (using Inno Setup)

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

Digital Signature
Signed by:
Secure Installer

Authority:
COMODO CA Limited

Valid from:
9/24/2012 7:00:00 PM

Valid to:
9/25/2013 6:59:59 PM

Subject:
CN=Secure Installer, O=Secure Installer, STREET=720 Market Street, STREET=5th floor, L=San Francisco, S=CA, PostalCode=94102, C=US

Issuer:
CN=COMODO Code Signing CA 2, O=COMODO CA Limited, L=Salford, S=Greater Manchester, C=GB

Serial number:
00C3507C1ADDE6B4C52E5426990F85CA2B

File PE Metadata
Compilation timestamp:
6/19/1992 5:22:17 PM

OS version:
1.0

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
2.25

CTPH (ssdeep):
12288:y2yMJfsHp+jVBWnjxcdpqR61Wx4Mp6UBsis9SUGpP5AviaxcGZ8C:hyMJfsJ+j3WiMWUMGpPSvDxcGuC

Entry address:
0x98CC

Entry point:
55, 8B, EC, 83, C4, CC, 53, 56, 57, 33, C0, 89, 45, F0, 89, 45, DC, E8, FA, 97, FF, FF, E8, 01, AA, FF, FF, E8, 2C, CC, FF, FF, E8, 73, CC, FF, FF, E8, 0A, F3, FF, FF, E8, 71, F4, FF, FF, 33, C0, 55, 68, 76, 9F, 40, 00, 64, FF, 30, 64, 89, 20, 33, D2, 55, 68, 2C, 9F, 40, 00, 64, FF, 32, 64, 89, 22, A1, 14, B0, 40, 00, E8, 9B, FE, FF, FF, E8, 26, FA, FF, FF, 8D, 55, F0, 33, C0, E8, E0, D0, FF, FF, 8B, 55, F0, B8, D8, BD, 40, 00, E8, AB, 98, FF, FF, 6A, 02, 6A, 00, 6A, 01, 8B, 0D, D8, BD, 40, 00, B2, 01, B8...
 
[+]

Entropy:
7.7653

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

Code size:
36 KB (36,864 bytes)

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

http://downloader.inbox2me.com/download.php?id=b551ce61b34cbf750f44a34a35d64b271245ee9c&z=0&p=eyJweSI6ImliIiwicnMiOiJnb29nbGUiLCJydCI6InNlYXJjaCIsImMiOiJ1cyIsIm8iOiJ3aW43IiwiYiI6ImNoMjgiLCJ1X2lkIjoiaWJfNTIwNmE5MzdjNzk3ZjIuNjExMzE0MTIiLCJwYV9pZCI6IjAiLCJzdF9pZCI6IjAiLCJzcF9pZCI6IjAwMDMtMDAwMCIsInRzIjoxMzc2MTY4MjcwLCJrdyI6InNpZ24gaW4iLCJjdSI6InNpZ24gaW4ifQ==

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