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4ss1i9ey4.exe

Beijing Caiyunshidai Technology Co., Ltd.

The application 4ss1i9ey4.exe by Beijing Caiyunshidai Technology Co. has been detected as a potentially unwanted program 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. The file has been seen being downloaded from dgkytklfjrqkb.cloudfront.net.
Publisher:
Beijing Caiyunshidai Technology Co., Ltd.  (signed and verified)

MD5:
6a4e02d253680a1cdbd75fe3f81fb25c

SHA-1:
6784367b2fb1ed3d59bfc5203b55fc9ca18cd63d

SHA-256:
1675e97ddfbf30f9a70f7754770a496b11685d0b558e0d1422735427881f8fee

Scanner detections:
1 / 68

Status:
Potentially unwanted

Analysis date:
5/11/2025 12:42:38 PM UTC  (today)

Scan engine
Detection
Engine version

Reason Heuristics
Adware.ELEX.SpeedSearch (M)
16.12.13.16

File size:
412.9 KB (422,840 bytes)

File type:
Executable application (Win32 EXE)

Common path:
C:\users\{user}\appdata\local\temp\{random}.tmp\4ss1i9ey4.exe

Digital Signature
Signed by:
Beijing Caiyunshidai Technology Co., Ltd.

Authority:
thawte, Inc.

Valid from:
12/8/2016 5:00:00 AM

Valid to:
3/4/2017 4:59:59 AM

Subject:
CN="Beijing Caiyunshidai Technology Co., Ltd.", O="Beijing Caiyunshidai Technology Co., Ltd.", L=Beijing, S=Beijing, C=CN

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

Serial number:
08E3A9E53F048C1FE92FADD5209CA109

File PE Metadata
Compilation timestamp:
11/23/2016 5:48:51 PM

OS version:
5.1

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
12.0

Entry address:
0x1950

Entry point:
E8, 02, 78, 00, 00, E9, 33, A4, 00, 00, 56, 57, 33, FF, 89, 0D, A8, 63, 46, 00, 57, 51, 57, 57, 57, B8, 00, 00, 00, 80, 50, 57, 50, 68, 00, 00, CF, 00, 68, 9C, 24, 46, 00, 68, B8, 24, 46, 00, 57, FF, 15, 24, D1, 45, 00, 8B, F0, 85, F6, 74, 12, 57, 56, FF, 15, 20, D1, 45, 00, 56, FF, 15, 1C, D1, 45, 00, 33, C0, 40, 5F, 5E, C3, 55, 8B, EC, 8B, 45, 08, 56, 8B, F1, 83, 66, 04, 00, C7, 06, 14, DD, 45, 00, C6, 46, 08, 00, FF, 30, E8, 2A, 89, 00, 00, 8B, C6, 5E, 5D, C2, 04, 00, 55, 8B, EC, A1, 04, A9, 46, 00, 33...
 
[+]

Entropy:
7.8205  (probably packed)

Code size:
367 KB (375,808 bytes)

The file 4ss1i9ey4.exe has been seen being distributed by the following URL.

http://dgkytklfjrqkb.cloudfront.net/.../yomz.exe

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