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ytd-upgrade.exe

7-Zip

Pepak

The application ytd-upgrade.exe, “7z Setup SFX small” by Pepak has been detected as a potentially unwanted program by 2 anti-malware scanners. This is a setup and installation application and has been known to bundle potentially unwanted software. The file has been seen being downloaded from ytd.pepak.net and multiple other hosts.
Publisher:
Igor Pavlov  (signed by Pepak)

Product:
7-Zip

Description:
7z Setup SFX small

Version:
9.20

MD5:
f1036328de6e4751ae9810748344ef97

SHA-1:
fa360bd501997e59ce3c66561804abd98b4152f7

SHA-256:
515e93212d6be4f2e558e9751233e1cc76a25dfe31a630a1853592be71a7a93e

Scanner detections:
2 / 68

Status:
Potentially unwanted

Analysis date:
4/18/2024 1:01:45 AM UTC  (today)

Scan engine
Detection
Engine version

Reason Heuristics
PUP.Pepak.Installer (M)
16.2.22.12

Trend Micro House Call
Suspicious_GEN.F47V1110
7.2.317

File size:
631.5 KB (646,696 bytes)

Product version:
9.20

Copyright:
Copyright (c) 1999-2010 Igor Pavlov

Original file name:
7zS2.sfx.exe

File type:
Executable application (Win32 EXE)

Language:
English (United States)

Common path:
C:\users\{user}\appdata\local\temp\ytd-upgrade.exe

Digital Signature
Signed by:
Pepak

Authority:
Pepak (root CA)

Valid from:
1/30/2014 8:51:44 PM

Valid to:
1/30/2015 8:51:43 PM

Subject:
CN=Pepak, E=http://www.pepak.net

Issuer:
CN=Pepak (root CA), E=http://www.pepak.net

Serial number:
B377576699E3CF924F96A97B44BBE215

File PE Metadata
Compilation timestamp:
11/18/2010 7:41:55 PM

OS version:
4.0

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
6.0

CTPH (ssdeep):
12288:3grsJEvl0ByxxohX0xJ7qbXylEo01xZYvyOUzVgw1Remm7:2sJEve8xWhkxUb5XNYneVgwnS7

Entry address:
0xDA70

Entry point:
60, BE, 00, A0, 40, 00, 8D, BE, 00, 70, FF, FF, 57, EB, 0B, 90, 8A, 06, 46, 88, 07, 47, 01, DB, 75, 07, 8B, 1E, 83, EE, FC, 11, DB, 72, ED, B8, 01, 00, 00, 00, 01, DB, 75, 07, 8B, 1E, 83, EE, FC, 11, DB, 11, C0, 01, DB, 73, EF, 75, 09, 8B, 1E, 83, EE, FC, 11, DB, 73, E4, 31, C9, 83, E8, 03, 72, 0D, C1, E0, 08, 8A, 06, 46, 83, F0, FF, 74, 74, 89, C5, 01, DB, 75, 07, 8B, 1E, 83, EE, FC, 11, DB, 11, C9, 01, DB, 75, 07, 8B, 1E, 83, EE, FC, 11, DB, 11, C9, 75, 20, 41, 01, DB, 75, 07, 8B, 1E, 83, EE, FC, 11, DB...
 
[+]

Packer / compiler:
UPX v0.89.6 - v1.02 / v1.05 -v1.24

Code size:
16 KB (16,384 bytes)

The file ytd-upgrade.exe has been seen being distributed by the following 2 URLs.

http://ytd.pepak.net/

http://www.pepak.net/files/.../ytd-1.45.exe

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