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yahoo-toolbar.exe

Program Setup

SecuredDownload

The application yahoo-toolbar.exe has been detected as a potentially unwanted program by 3 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 tmpfile3405.s3.amazonaws.com.
Publisher:
SecuredDownload

Product:
Program Setup

Version:
1.0.5.a0.1_54528

MD5:
669f56fa727e0ba897622c4a416453c6

SHA-1:
e1ae14a58e66e10fcc7428dd37df68d55e34bff2

SHA-256:
e97de1d8b36f6c3d448924ff86b55a2055c122aa63053325077972db1c91f77c

Scanner detections:
3 / 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:
2/26/2025 10:50:01 AM UTC  (today)

Scan engine
Detection
Engine version

Dr.Web
Trojan.InstallCore.1903
9.0.1.05190

ESET NOD32
Win32/InstallCore.AEO.gen potentially unwanted application
8.0.319.0

Reason Heuristics
PUP.InstallCore (M)
16.3.27.11

File size:
984.6 KB (1,008,258 bytes)

Product version:
1.0.5.a0.1_54528

Copyright:
SecuredDownload

File type:
Executable application (Win32 EXE)

Installer:
Inno Setup

Language:
Language Neutral

Common path:
C:\users\{user}\appdata\local\microsoft\windows\inetcache\ie\{random}\yahoo-toolbar.exe

File PE Metadata
Compilation timestamp:
6/19/1992 3:22:17 PM

OS version:
1.0

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
2.25

CTPH (ssdeep):
24576:pkri+OiML1DPOUG6XcBZ6BeOm6x1eRhBcknHB/YPXsaEgb:pZ7h1iUTcBZ96x1wjcuW0aNb

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...
 
[+]

Entropy:
7.9122

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

Code size:
37 KB (37,888 bytes)

The file yahoo-toolbar.exe has been seen being distributed by the following URL.

https://tmpfile3405.s3.amazonaws.com/download77/ic_trackings/46215/.../yahoo-toolbar.exe

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