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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. The file has been seen being downloaded from cache-default04f.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:
d1ac12a2f9c320bf02d8a5c5cfb098e4

SHA-1:
c45a45705f6fdc2080a529d4ebb5fecae8a36c72

SHA-256:
761b077b45ad3b6da1a85fa0d5baaeac95dc59d9867785251a159b15d6ab1b15

Scanner detections:
1 / 68

Status:
Potentially unwanted

Analysis date:
11/23/2024 8:10:08 AM UTC  (today)

Scan engine
Detection
Engine version

Reason Heuristics
PUP.Yandex.Search.Installer.Meta (M)
16.5.20.7

File size:
3.2 MB (3,364,672 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)

Language:
English (United States)

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

Digital Signature
Signed by:
YANDEX LLC

Authority:
GlobalSign nv-sa

Valid from:
9/25/2015 2:44:52 PM

Valid to:
9/25/2017 2:44:52 PM

Subject:
E=pki@yandex-team.ru, CN=YANDEX LLC, O=YANDEX LLC, L=Moscow, S=Moscow, C=RU

Issuer:
CN=GlobalSign CodeSigning CA - G2, O=GlobalSign nv-sa, C=BE

Serial number:
11210FF6462B63D55AFBAA81F9C734A7AA94

File PE Metadata
Compilation timestamp:
3/4/2016 6:06:21 PM

OS version:
5.1

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
12.0

CTPH (ssdeep):
49152:B1+XwSUeA91Y3f+AU9wbq+0STTKNlMS2+welJ7kkI5WTe/1:BeI9H+03qZ+M

Entry address:
0x13A7E

Entry point:
E8, 33, BF, 00, 00, E9, 00, 00, 00, 00, 6A, 14, 68, 20, 53, 43, 00, E8, 3C, 48, 00, 00, E8, EB, 38, 00, 00, 0F, B7, F0, 6A, 02, E8, C6, BE, 00, 00, 59, B8, 4D, 5A, 00, 00, 66, 39, 05, 00, 00, 40, 00, 74, 04, 33, DB, EB, 33, A1, 3C, 00, 40, 00, 81, B8, 00, 00, 40, 00, 50, 45, 00, 00, 75, EB, B9, 0B, 01, 00, 00, 66, 39, 88, 18, 00, 40, 00, 75, DD, 33, DB, 83, B8, 74, 00, 40, 00, 0E, 76, 09, 39, 98, E8, 00, 40, 00, 0F, 95, C3, 89, 5D, E4, E8, 0A, 83, 00, 00, 85, C0, 75, 08, 6A, 1C, E8, DC, 00, 00, 00, 59, E8...
 
[+]

Entropy:
6.8065

Code size:
166 KB (169,984 bytes)

The file yandexsearch.exe has been seen being distributed by the following 12 URLs.

http://cache-default04f.cdn.yandex.net/downloader.yandex.net/yandex-pack/.../YandexPackSetup.exe

http://cache-default01e.cdn.yandex.net/downloader.yandex.net/yandex-pack/.../YandexPackSetup.exe

http://cache-default05e.cdn.yandex.net/downloader.yandex.net/yandex-pack/.../YandexPackSetup.exe

http://cache-ash05.cdn.yandex.net/downloader.yandex.net/yandex-pack/.../YandexPackSetup.exe

http://cache-minsk01.cdn.yandex.net/downloader.yandex.net/yandex-pack/.../YandexPackSetup.exe

http://cache-default01g.cdn.yandex.net/downloader.yandex.net/yandex-pack/.../YandexPackSetup.exe

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

http://cache-kiev02.cdn.yandex.net/downloader.yandex.net/yandex-pack/.../YandexPackSetup.exe

http://cache-default03d.cdn.yandex.net/downloader.yandex.net/yandex-pack/.../YandexPackSetup.exe

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

http://cache-ams03.cdn.yandex.net/downloader.yandex.net/yandex-pack/.../YandexSearch.exe

http://cache-ash02.cdn.yandex.net/downloader.yandex.net/yandex-pack/.../YandexSearch.exe

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