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yandexpacksetup.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 yandexpacksetup.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 self-extracting archive and installer and has been known to bundle potentially unwanted software. The file has been seen being downloaded from downloader.yandex.net.cache-kz02.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:
81c8c4cc054d256b567983693d918330

SHA-1:
7c2f7a427b9652ed27be073ad851e8bf59d1680f

SHA-256:
d8ff63c10e844d1ccb54b5e08132046e7f57cfb9c10416a578a5522c461da3a3

Scanner detections:
1 / 68

Status:
Potentially unwanted

Analysis date:
2/25/2025 7:38:14 PM UTC  (today)

Scan engine
Detection
Engine version

Reason Heuristics
PUP.Yandex.Pack.Installer.Meta (L)
16.4.25.21

File size:
31 MB (32,453,464 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\temp\{random}.tmp\yandexpacksetup.exe

Digital Signature
Signed by:
YANDEX LLC

Authority:
VeriSign, Inc.

Valid from:
1/15/2013 3:30:00 AM

Valid to:
1/16/2016 3:29:59 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:
3/24/2014 7:22:31 PM

OS version:
5.0

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
9.0

CTPH (ssdeep):
393216:Or1MijjEiMcyumwMtLM7qLK8GMjIAOIouKTPgbdkfr8rbOG79TrZjTkuM4XVTIlv:pis1wMBc3MsAQbBfarBviLOM12r8

Entry address:
0x14E94

Entry point:
E8, 54, A3, 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, E4, 31, 43, 00, 00, 74, 16, 57, 56, 83, E7, 0F, 83, E6, 0F, 3B, FE, 5E, 5F, 75, 08, 5E, 5F, 5D, E9, 11, 80, 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, 14, 50, 41, 00, 90, 8B, C7, BA, 03, 00, 00, 00, 83, E9, 04, 72, 0C, 83, E0, 03, 03...
 
[+]

Entropy:
7.9412  (probably packed)

Code size:
160 KB (163,840 bytes)

The file yandexpacksetup.exe has been seen being distributed by the following 3 URLs.

http://downloader.yandex.net.cache-kz02.cdn.yandex.net/yandex-pack/.../YandexPackSetup.exe

http://downloader.yandex.net.cache-kz01.cdn.yandex.net/yandex-pack/.../YandexPackSetup.exe

http://downloader.yandex.net.cache-default02e.cdn.yandex.net/yandex-pack/.../YandexPackSetup.exe

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