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yahoomail_setup.exe

The application yahoomail_setup.exe has been detected as a potentially unwanted program by 4 anti-malware scanners. The program is a setup application that uses the Inno Setup installer, however the file is not signed with an authenticode signature from a trusted source. The setup program uses the InstallCore engine which may bundle additional software offers including toolbars and browser extensions. The file has been seen being downloaded from downloader.inbox2me.com.
MD5:
493e8a97fdfe9ce9e2794beaabe19318

SHA-1:
b5356fdbdbbe35c8aaa45a6021b9f70baccb07c9

SHA-256:
31b188168f605d3336993a8454782babae9e003bcb23336aad1db1ea9440f142

Scanner detections:
4 / 68

Status:
Potentially unwanted

Explanation:
Uses the InstallCore download manager to install additional potentially unwanted software which may include extensions such as DealPly and various toolbars.

Analysis date:
4/26/2024 8:19:20 PM UTC  (today)

Scan engine
Detection
Engine version

AVG
Adware InstallCore.VU
2013.0.4447

ESET NOD32
Win32/InstallCore.BX potentially unwanted application
6.3

Microsoft Security Essentials
SoftwareBundler:Win32/OutBrowse
1.225.3344.0

Reason Heuristics
PUP.InstallCore.ENG (M)
16.8.7.21

File size:
617.3 KB (632,072 bytes)

File type:
Executable application (Win32 EXE)

Installer:
Inno Setup

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

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

OS version:
1.0

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
2.25

CTPH (ssdeep):
12288:tyMJfsG7wtequI7zNU/bOqkVp0ZlD6iINeW9SoBh9qHmqWu:tyMJfsKwYiCT1kVpsOiRk0mqW

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:
7.7913

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=eyJweSI6ImliIiwicnMiOiJnb29nbGUiLCJydCI6InNlYXJjaCIsImMiOiJ1cyIsIm8iOiJ3aW43IiwiYiI6ImNoMjkiLCJ1X2lkIjoiaWJfNTI0YWVmZjFjODM1NTUuMjk0Njg5NDYiLCJwYV9pZCI6IjAiLCJzdF9pZCI6IjAiLCJzcF9pZCI6IjAwMDMtMDAwMCIsInRzIjoxMzgwNjQyODAxLCJrdyI6InlhaG9vIG1haWwiLCJjdSI6InlhaG9vIG1haWwifQ==

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