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yandexsearch.exe

Windows Installer XML

YANDEX LLC

While the file properties state the file is developed by 'Microsoft Corporation', this is not the case and it is designed just to look like a legitimate Microsoft system file. The application yandexsearch.exe, “Software Installer” by YANDEX has been detected as a potentially unwanted program by 1 anti-malware scanner with very strong indications that the file is a potential threat. This is a setup and installation application and has been known to bundle potentially unwanted software. The file has been seen being downloaded from cache-default02f.cdn.yandex.net and multiple other hosts.
Publisher:
Microsoft Corporation  (signed by YANDEX LLC)

Product:
Windows Installer XML

Description:
Software Installer

Version:
3.0.5419.0

MD5:
bfaaacfa5192e2ba0498a40b2534353c

SHA-1:
5ac489806fdf8bc74f8356089c94c1d686633be2

SHA-256:
7b5053bad947bbb5da10fe1570d5ae59f60f9e24a305176b671b8641e861cd24

Scanner detections:
1 / 68

Status:
Potentially unwanted

Analysis date:
5/21/2024 2:54:02 AM UTC  (today)

Scan engine
Detection
Engine version

Reason Heuristics
PUP.Yandex.Search.Installer.Meta (M)
16.4.22.13

File size:
2.7 MB (2,850,104 bytes)

Product version:
3.0.5419.0

Copyright:
Copyright (c) Microsoft Corporation.  All rights reserved.

Original file name:
setup.exe

File type:
Executable application (Win32 EXE)

Common path:
C:\users\{user}\appdata\local\temp\{random}.tmp\yandexsearch.exe

Digital Signature
Signed by:
YANDEX LLC

Authority:
VeriSign, Inc.

Valid from:
1/15/2013 5:00:00 AM

Valid to:
1/16/2016 4:59:59 AM

Subject:
CN=YANDEX LLC, OU=Digital ID Class 3 - Microsoft Software Validation v2, O=YANDEX LLC, L=Moscow, S=Moscow, C=RU

Issuer:
CN=VeriSign Class 3 Code Signing 2010 CA, OU=Terms of use at https://www.verisign.com/rpa (c)10, OU=VeriSign Trust Network, O="VeriSign, Inc.", C=US

Serial number:
3667E158B524C8FFBFE538172786F1E2

File PE Metadata
Compilation timestamp:
10/15/2014 11:02:41 AM

OS version:
5.0

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
9.0

CTPH (ssdeep):
49152:pHoV8oxdJXyxuu6coFafqW+bXhNyBkHpC+yYKfJGZQiay9/dSTUN2+:pHoV84Jixuu6co4fqdNyBkJCeKfJGZhT

Entry address:
0x1613E

Entry point:
E8, 1A, B1, 00, 00, E9, 78, FE, FF, FF, CC, CC, CC, CC, CC, CC, CC, CC, 55, 8B, EC, 57, 56, 8B, 75, 0C, 8B, 4D, 10, 8B, 7D, 08, 8B, C1, 8B, D1, 03, C6, 3B, FE, 76, 08, 3B, F8, 0F, 82, A4, 01, 00, 00, 81, F9, 00, 01, 00, 00, 72, 1F, 83, 3D, 04, 73, 43, 00, 00, 74, 16, 57, 56, 83, E7, 0F, 83, E6, 0F, 3B, FE, 5E, 5F, 75, 08, 5E, 5F, 5D, E9, B1, 8C, 00, 00, F7, C7, 03, 00, 00, 00, 75, 15, C1, E9, 02, 83, E2, 03, 83, F9, 08, 72, 2A, F3, A5, FF, 24, 95, C4, 62, 41, 00, 90, 8B, C7, BA, 03, 00, 00, 00, 83, E9, 04...
 
[+]

Code size:
168.5 KB (172,544 bytes)

The file yandexsearch.exe has been seen being distributed by the following 6 URLs.

http://cache-default02f.cdn.yandex.net/downloader.yandex.net/yandex-pack/.../YandexSearch.exe

http://cache-ams05.cdn.yandex.net/downloader.yandex.net/yandex-pack/.../YandexSearch.exe

http://cache-default04h.cdn.yandex.net/downloader.yandex.net/yandex-pack/.../YandexSearch.exe

http://cache-kiev08.cdn.yandex.net/downloader.yandex.net/yandex-pack/.../YandexSearch.exe

http://cache-default03h.cdn.yandex.net/downloader.yandex.net/yandex-pack/.../YandexSearch.exe

http://cache-kiev09.cdn.yandex.net/downloader.yandex.net/yandex-pack/.../YandexSearch.exe

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