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luckyinstall.exe

yssoft

The application luckyinstall.exe by yssoft 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. It is also typically executed from the user's temporary directory. The file has been seen being downloaded from down.luckytool.net.
Publisher:
luckytool  (signed by yssoft)

Product:
luckytool

Version:
1.0.0.1

MD5:
1a0dea99b6f3a7f27507e2a5c030c1c0

SHA-1:
633368a4647cba55a487bf51322dd6a1965a0c1e

SHA-256:
9fa5e1e0bd0f7b076260f3500b718e22e622502548c7f5f08d42f201520b55ff

Scanner detections:
1 / 68

Status:
Potentially unwanted

Note:
Our current pool of anti-malware engines have not currently detected this file, however based on our own detection heuristics we feel that this file is unwanted.

Analysis date:
12/28/2024 4:20:08 AM UTC  (today)

Scan engine
Detection
Engine version

Reason Heuristics
PUP.yssoft.Installer (M)
16.4.27.19

File size:
1.3 MB (1,368,432 bytes)

Product version:
1.0.0.1

Copyright:
Copyright luckytool

File type:
Executable application (Win32 EXE)

Installer:
NSIS (Nullsoft Scriptable Install System)

Common path:
C:\users\{user}\appdata\local\temp\luckyinstall.exe

Digital Signature
Signed by:
yssoft

Authority:
thawte, Inc.

Valid from:
3/24/2016 9:00:00 AM

Valid to:
5/24/2018 8:59:59 AM

Subject:
CN=yssoft, O=yssoft, L=Chilgok-gun, S=Gyeongsangbuk-do, C=KR

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

Serial number:
4FFD8833DCF52D25418DA64CD58D741A

File PE Metadata
Compilation timestamp:
12/6/2009 7:50:52 AM

OS version:
4.0

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
6.0

CTPH (ssdeep):
24576:XhAG1UjxnJ7mHzWvghpIHNXYpbWU/MHBpiuGhWex7EbJd5A85JG1UenHINfbJI51:XhR1UjxJ6TWvWpOUblUQuqgbS8JG1Ue/

Entry address:
0x30FA

Entry point:
81, EC, 80, 01, 00, 00, 53, 55, 56, 33, DB, 57, 89, 5C, 24, 18, C7, 44, 24, 10, 60, 91, 40, 00, 33, F6, C6, 44, 24, 14, 20, FF, 15, 30, 70, 40, 00, 68, 01, 80, 00, 00, FF, 15, B0, 70, 40, 00, 53, FF, 15, 7C, 72, 40, 00, 6A, 08, A3, 18, EC, 42, 00, E8, F1, 2B, 00, 00, A3, 64, EB, 42, 00, 53, 8D, 44, 24, 34, 68, 60, 01, 00, 00, 50, 53, 68, 98, 8F, 42, 00, FF, 15, 58, 71, 40, 00, 68, 54, 91, 40, 00, 68, 60, E3, 42, 00, E8, A4, 28, 00, 00, FF, 15, AC, 70, 40, 00, BF, 00, 40, 43, 00, 50, 57, E8, 92, 28, 00, 00...
 
[+]

Entropy:
7.8235

Packer / compiler:
Nullsoft install system v2.x

Code size:
23.5 KB (24,064 bytes)

The file luckyinstall.exe has been seen being distributed by the following URL.

http://down.luckytool.net/.../luckyinstall.exe

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