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yahoomail_setup.exe

The application yahoomail_setup.exe has been detected as a potentially unwanted program by 6 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:
efdbab0d3a5e970da99b6e017d5bf600

SHA-1:
2e1d98ad021595bce6d4c5f46c3289e64a8a60ea

SHA-256:
d459cc160b941a95c20db48f3d8786996e87e9f7c88bdc36f7d94cc9de062b64

Scanner detections:
6 / 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:
4/25/2024 9:52:18 PM UTC  (today)

Scan engine
Detection
Engine version

avast!
Win32:OutBrowse-CH [PUP]
160203-1

Dr.Web
Trojan.MulDrop5.10078
9.0.1.05190

ESET NOD32
Win32/InstallCore.BX potentially unwanted application
7.0.302.0

Microsoft Security Essentials
Threat.Undefined
1.213.5542.0

Sophos
PUA 'Install Core'
5.23

VIPRE Antivirus
Threat.4786018
46938

File size:
661.4 KB (677,312 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):
12288:3yMJfsGkJCvCtf6zt7xpRydvsHVlkp4vLyUkbENGt9UT3LqRq8HY/jKPNjrj7X:3yMJfsTkCkR/RAvsHVkUkbEpaEVmz

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:
7.8065

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=eyJweSI6ImliIiwicnMiOiJnb29nbGUiLCJydCI6InNlYXJjaCIsImMiOiJ1cyIsIm8iOiJ3aW43IiwiYiI6ImNoMzEiLCJ1X2lkIjoiaWJfNTI4NjU1ZGI2OGQwOTkuNTE4MzM0MjYiLCJwYV9pZCI6IjAiLCJzdF9pZCI6IjAiLCJzcF9pZCI6IjAwMDMtMDAwMCIsInRzIjoxMzg0NTM1NTE1LCJrdyI6InNpZ24gaW50byB5YWhvbyBtYWlsIiwiY3UiOiJzaWduIGludG8geWFob28gbWFpbCJ9

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