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251c21ad-5b36-510e-42c8-9ecebfa2b650_1d1be9f9ac73fc7

YayZap Installer

YayZap

The file 251c21ad-5b36-510e-42c8-9ecebfa2b650_1d1be9f9ac73fc7 by YayZap 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 program is a setup application that uses the NSIS (Nullsoft Scriptable Install System) installer. The file has been seen being downloaded from maby.yayzap.com and multiple other hosts.
Publisher:
YayZap  (signed and verified)

Product:
YayZap Installer

Version:
4.0.4608.0

MD5:
d1003115a8795f028c183215db906449

SHA-1:
45c85c9e098d92da39c31b3b55e3f8ad106a0071

SHA-256:
995db3593b8cbff5932ae37684b1327768a7195ff132c966437d7d23ce220771

Scanner detections:
1 / 68

Status:
Potentially unwanted

Analysis date:
7/4/2025 7:55:35 PM UTC  (today)

Scan engine
Detection
Engine version

Reason Heuristics
PUP.YayZap.Installer (M)
16.6.4.16

File size:
284.9 KB (291,712 bytes)

Product version:
4.0.4608.0

Copyright:
Copyright (C) 2015

Installer:
NSIS (Nullsoft Scriptable Install System)

Language:
English (United States)

Common path:
C:\ProgramData\microsoft\microsoft antimalware\scans\filesstash\251c21ad-5b36-510e-42c8-9ecebfa2b650_1d1be9f9ac73fc7

Digital Signature
Signed by:
YayZap

Authority:
thawte, Inc.

Valid from:
7/7/2015 7:00:00 PM

Valid to:
7/7/2016 6:59:59 PM

Subject:
CN=YayZap, O=YayZap, L=Laguna Hills, S=California, C=US

Issuer:
CN=thawte SHA256 Code Signing CA, O="thawte, Inc.", C=US

Serial number:
0EB407FC8BBFEF51EDA704A37F4AF521

File PE Metadata
Compilation timestamp:
12/5/2009 4:50:46 PM

OS version:
4.0

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
6.0

CTPH (ssdeep):
6144:BspdcdQeTI0h6nb91KZ9TQ+g0Tx8iNId6hjdgh8N94u+F3kSc:OctI991uD/x87vh8NGuQNc

Entry address:
0x323C

Entry point:
81, EC, 80, 01, 00, 00, 53, 55, 56, 33, DB, 57, 89, 5C, 24, 18, C7, 44, 24, 10, 30, 91, 40, 00, 33, F6, C6, 44, 24, 14, 20, FF, 15, 30, 70, 40, 00, 68, 01, 80, 00, 00, FF, 15, B4, 70, 40, 00, 53, FF, 15, 7C, 72, 40, 00, 6A, 08, A3, 58, 3F, 42, 00, E8, 09, 2C, 00, 00, A3, A4, 3E, 42, 00, 53, 8D, 44, 24, 34, 68, 60, 01, 00, 00, 50, 53, 68, 58, F4, 41, 00, FF, 15, 58, 71, 40, 00, 68, B8, 91, 40, 00, 68, A0, 36, 42, 00, E8, BC, 28, 00, 00, FF, 15, B0, 70, 40, 00, BF, 00, 90, 42, 00, 50, 57, E8, AA, 28, 00, 00...
 
[+]

Entropy:
7.9220

Packer / compiler:
Nullsoft install system v2.x

Code size:
23 KB (23,552 bytes)

The file 251c21ad-5b36-510e-42c8-9ecebfa2b650_1d1be9f9ac73fc7 has been seen being distributed by the following 2 URLs.

http://maby.yayzap.com/yay/getsetup.php?sp=YTI2Njc1ODk5NjPboUUqDbSzw2bZtvqfiqG1Df85T3ARVUG2Y6G28LX3fsvBMQJQIefm6eqnLm/.../bf5sC5KFzLTsonW3axH fOAnYnyKLviUvr VPwy2eOuldX UCync=

http://maby.yayzap.com/yay/getsetup.php?sp=YTI2Njc1ODk5NjPboUUqDbSzw2bZtvqfiqG1Df85T3ARVUG2Y6G28LX3fsvBMQJQIefm6eqnLm/.../bf5sC5KFzLTsonW3axH fOAnYnyKLviUvr VPwy2eOuldX UCync=

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