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signkey.exe

signkey

LEEYEON communication Co.,Ltd

The application signkey.exe by LEEYEON communication Co.,Ltd has been detected as adware by 1 anti-malware scanner with very strong indications that the file is a potential threat. This is a setup program which is used to install the application. It is set to automatically start when a user logs into Windows via the current user run registry key under the display name ‘signkey’. The file has been seen being downloaded from down.signkey.co.kr.
Publisher:
(주) 이연 커뮤니케이션  (signed by LEEYEON communication Co.,Ltd)

Product:
signkey

Version:
1.0.0.0

MD5:
ec962f0e76e7db4c8de5a2f9bcd54a82

SHA-1:
16196f3ea39e4d5bcf781762113695445871e884

SHA-256:
0c20b28c17240456aaba6e478f9066025767ba77733f390ad7876462be3c2b1f

Scanner detections:
1 / 68

Status:
Adware

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:
5/1/2024 5:22:01 AM UTC  (today)

Scan engine
Detection
Engine version

Reason Heuristics
PUP.LEEYEONc (M)
16.3.30.9

File size:
233.7 KB (239,272 bytes)

Product version:
1.0.0.0

Original file name:
signkey.exe

File type:
Executable application (Win32 EXE)

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

Digital Signature
Signed by:
LEEYEON communication Co.,Ltd

Authority:
GlobalSign nv-sa

Valid from:
12/21/2015 7:13:56 PM

Valid to:
12/21/2016 7:13:56 PM

Subject:
CN="LEEYEON communication Co.,Ltd", O="LEEYEON communication Co.,Ltd", L=Suseong-gu, S=Daegu, C=KR

Issuer:
CN=GlobalSign CodeSigning CA - SHA256 - G2, O=GlobalSign nv-sa, C=BE

Serial number:
11213A4DCF583690F35A7498B194D91ADBAF

File PE Metadata
Compilation timestamp:
6/20/1992 7:22:17 AM

OS version:
4.0

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
2.25

CTPH (ssdeep):
6144:sKO82KuxqFWYT4cICJBAcW3c3TjuSGKqNJ7TZiPe:Pux9zcppW3c3TjuRKEJ7Tv

Entry address:
0x95930

Entry point:
60, BE, 00, 10, 46, 00, 8D, BE, 00, 00, FA, FF, C7, 87, C4, 60, 07, 00, 0F, AC, 80, 6C, 57, 83, CD, FF, EB, 0E, 90, 90, 90, 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, 0B, 75, 19, 8B, 1E, 83, EE, FC, 11, DB, 72, 10, 48, 01, DB, 75, 07, 8B, 1E, 83, EE, FC, 11, DB, 11, C0, EB, D4, 31, C9, 83, E8, 03, 72, 11, C1, E0, 08, 8A, 06, 46, 83, F0, FF, 74, 78, D1, F8, 89, C5, EB, 0B, 01, DB, 75, 07...
 
[+]

Entropy:
7.8295

Packer / compiler:
UPX v0.89.6 - v1.02 / v1.05 -v1.22 (Delphi) stub

Code size:
212 KB (217,088 bytes)

Startup File (User Run)
Registry location:
HKCU\SOFTWARE\Microsoft\Windows\CurrentVersion\Run

Name:
signkey

Command:
C:\users\{user}\appdata\local\signkey\signkey.exe


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

http://down.signkey.co.kr/.../signkey.exe

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