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roryokc.exe

yssoft

The application roryokc.exe, “LuckyTool Application” 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. It runs as a windows Service named “roryokv”. The file has been seen being downloaded from down.luckytool.net.
Publisher:
luckytool  (signed by yssoft)

Product:
luckytool

Description:
LuckyTool Application

Version:
1.0.0.1

MD5:
7451e397aadc18979d219e6d0c953331

SHA-1:
609782f491efa5962445194ae95eb3e2feb295ea

SHA-256:
746ffd19f1f83a201518d391ba4b249e30b4b1a304a6eac695489c57ecb1101f

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:
11/23/2024 10:22:47 AM UTC  (today)

Scan engine
Detection
Engine version

Reason Heuristics
PUP.yssoft (M)
16.4.29.7

File size:
155.7 KB (159,416 bytes)

Product version:
1.0.0.1

Copyright:
Copyright (C) 2014 luckytool

Original file name:
luckytool

File type:
Executable application (Win32 EXE)

Common path:
C:\users\{user}\appdata\roaming\roryok\roryokc.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:
9/23/2015 8:00:34 PM

OS version:
5.1

OS bitness:
Win32

Subsystem:
Windows Console

Linker version:
14.0

CTPH (ssdeep):
3072:BfLGE9NXQsv0e7XDO9Wzoi0CqahTypt5ZimRIy8lJ4Y/YBfn8:NLGE/1vjTO9koi0CE2y8/4YABP8

Entry address:
0x83C3

Entry point:
E8, 09, 04, 00, 00, E9, 7A, FE, FF, FF, CC, CC, CC, 51, 8D, 4C, 24, 08, 2B, C8, 83, E1, 0F, 03, C1, 1B, C9, 0B, C1, 59, E9, 5A, 05, 00, 00, 51, 8D, 4C, 24, 08, 2B, C8, 83, E1, 07, 03, C1, 1B, C9, 0B, C1, 59, E9, 44, 05, 00, 00, 55, 8B, EC, 83, 25, FC, FC, 41, 00, 00, 83, EC, 2C, 53, 33, DB, 43, 09, 1D, 1C, F0, 41, 00, 6A, 0A, E8, 42, C8, 00, 00, 85, C0, 0F, 84, 74, 01, 00, 00, 83, 65, EC, 00, 33, C0, 83, 0D, 1C, F0, 41, 00, 02, 33, C9, 56, 57, 89, 1D, FC, FC, 41, 00, 8D, 7D, D4, 53, 0F, A2, 8B, F3, 5B, 89...
 
[+]

Entropy:
6.4825

Code size:
85 KB (87,040 bytes)

Service
Display name:
roryokv

Type:
Win32OwnProcess, InteractiveProcess


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

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

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