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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 downloader.yandex.net.cache-novosibirsk01.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:
5a20ea713a7c4e8da0adce43c887e047

SHA-1:
c3817f16a90adb41aac8aa95a75505eb033ddd5c

SHA-256:
918d193e266a1737b3b92465ec5b11360439c51b9717a661169fb7932f9b43c9

Scanner detections:
1 / 68

Status:
Potentially unwanted

Analysis date:
12/27/2024 12:46:56 PM UTC  (today)

Scan engine
Detection
Engine version

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

File size:
1.6 MB (1,678,680 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:
2/28/2013 2:41:49 PM

OS version:
5.0

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
9.0

CTPH (ssdeep):
24576:WhgeEEXcDl3MkV+yW5LHRU7g/x4Gd3hddcsliwYeqyrN+5utLuu4j:WqeEeg91V+yW5LW0V3nlijevOutyu4

Entry address:
0x3D24

Entry point:
E8, B3, 3D, 00, 00, E9, 78, FE, FF, FF, 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, 78, 9C, 41, 00, 00, 74, 16, 57, 56, 83, E7, 0F, 83, E6, 0F, 3B, FE, 5E, 5F, 75, 08, 5E, 5F, 5D, E9, 82, 3E, 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, A4, 3E, 40, 00, 90, 8B, C7, BA, 03, 00, 00, 00, 83, E9, 04, 72, 0C, 83, E0, 03, 03...
 
[+]

Code size:
64.5 KB (66,048 bytes)

The file yandexsearch.exe has been seen being distributed by the following 7 URLs.

http://downloader.yandex.net.cache-novosibirsk01.cdn.yandex.net/yandex-pack/.../YandexSearch.exe

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

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

http://downloader.yandex.net.cache-kiev06.cdn.yandex.net/yandex-pack/.../YandexSearch.exe

http://downloader.yandex.net.cache-novosibirsk04.cdn.yandex.net/yandex-pack/.../YandexSearch.exe

http://downloader.yandex.net.cache-samaramgf05.cdn.yandex.net/yandex-pack/.../YandexSearch.exe

http://downloader.yandex.net.cache-default01f.cdn.yandex.net/yandex-pack/.../YandexSearch.exe

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