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yaygames.exe

YayZap

The application yaygames.exe 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 yayzap.com and multiple other hosts.
Publisher:
YayZap  (signed and verified)

MD5:
06d64a869cac3cce03d14e20daceff83

SHA-1:
e327cf05af13ca0bc6c359f5d5717e925917a368

SHA-256:
51db59bdbfc5473de67cb4bed237c53c73994508010f2ff9505d72f762b0a4d7

Scanner detections:
1 / 68

Status:
Potentially unwanted

Analysis date:
7/4/2025 10:19:20 AM UTC  (today)

Scan engine
Detection
Engine version

Reason Heuristics
PUP.YayZap.Installer (M)
16.2.19.20

File size:
80.5 KB (82,448 bytes)

File type:
Executable application (Win32 EXE)

Installer:
NSIS (Nullsoft Scriptable Install System)

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

Digital Signature
Signed by:
YayZap

Authority:
thawte, Inc.

Valid from:
7/7/2015 5:00:00 PM

Valid to:
7/7/2016 4:59:59 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 2:50:46 PM

OS version:
4.0

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
6.0

CTPH (ssdeep):
1536:oQpQ5EP0ijnRTXJVX1vgllllllllllllllllllllUllllllllRPFHZdbTXbO9il6:oQIURTXJrtFHvbTXb4ilDs4Sx

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:
7.4381

Packer / compiler:
Nullsoft install system v2.x

Code size:
23 KB (23,552 bytes)

The file yaygames.exe has been seen being distributed by the following 6 URLs.

http://yayzap.com/yay/.../CVeV0mwy5OYdWKDO1JbqI4sfy42UAVbycmUbqRhRt0m faTUtPqTdklA==&c=gameId2811

http://maby.yayzap.com/.../getsetup.php?sp=ODI5MTc1NTM526FFKg20s8NtnvECMjd/jVQeLfe8aSqzIKd45bhYEyp37+1J3J6bAdC3N/0KuNLpsc4ebnVAQgfQRcRToHj9ivvCqKJ9V4Umr+gWVRYvo0cFFg1sqTEGcfla5375YNMW

http://maby.yayzap.com/yay/getsetup.php?sp=YTMxMzEyNTY2MDHboUUqDbSzw22e8QIyN3 NVB4t97xpKrMgp3jluFgTKjn6AHblg0 MaFuQhcAnpyobOnf7jFFq/.../tjM=

http://maby.yayzap.com/yay/getsetup.php?sp=YTM1MjI0NDA2OTfboUUqDbSzw22e8QIyN3 NVB4t97xpKrMqxFUgdxxgV6yDygDz1xn62S7wTfS/.../QwGNSAvxxiqkEsCTsc2Tb4=

http://yayzap.com/yay/.../iaY1NPM86qTvnGly 4VGbXQ623 UhdE3wvqhPmujLQt8AG0qHAcI3xo6IW vqHd5ZpcDXAZGzvzHnDCdQKKzDNb8oM0eYDQ4Rat6pjdzWhAVCtVjLCxZfKkAC6gm8fs62L0uELk8JjWcBW8YUgRfZkDMOma0xC Ddcww==&c=gameId2811

http://yayzap.com/yay/gameclk.php?cp=OTM4MjAyNTg3OE6UXWU6teqLBZXcId3hmyhaL5rSwLVGUKOA/.../I3VhQb7s8VsKlyWpY4cFyL1Ao7EB63x8Yy53V1NizTAfA8I9HpBdO3Iu2gyYKPgMePo6xOpSApnMmOtKcfpTcvW12Ei7hc1Vpoco7H7&c=gameId2811

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