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yomz.exe

Beijing Caiyunshidai Technology Co., Ltd.

The application yomz.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:
7ec54118698256a10e051a5ff95a3a79

SHA-1:
bb180e750b0c56197ebcac2e16f99dac6d2157bd

SHA-256:
4641d5cd2af88fddb08fdee148d39340abfeceed35e863f6e8305527c9b2d3aa

Scanner detections:
1 / 68

Status:
Potentially unwanted

Analysis date:
1/4/2026 3:05:31 PM UTC  (today)

Scan engine
Detection
Engine version

Reason Heuristics
Adware.ELEX.SpeedSearch (M)
16.12.15.11

File size:
411.9 KB (421,816 bytes)

File type:
Executable application (Win32 EXE)

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

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

Authority:
thawte, Inc.

Valid from:
12/8/2016 4:00:00 PM

Valid to:
3/3/2017 3:59:59 PM

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:
084F40630992F1E2342ECCA44AC51A60

File PE Metadata
Compilation timestamp:
12/11/2016 6:12:32 AM

OS version:
5.1

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
12.0

Entry address:
0x4BBA

Entry point:
E8, C2, 5B, 00, 00, E9, 75, 90, 00, 00, 55, 8B, EC, 56, 8B, 75, 08, 57, 8B, 46, 04, 85, C0, 74, 51, 8D, 48, 08, 80, 39, 00, 74, 49, F6, 06, 80, 8B, 7D, 0C, 74, 05, F6, 07, 10, 75, 3C, 8B, 57, 04, 3B, C2, 74, 14, 8D, 42, 08, 50, 51, E8, D7, AF, 00, 00, 59, 59, 85, C0, 74, 04, 33, C0, EB, 24, F6, 07, 02, 74, 05, F6, 06, 08, 74, F2, 8B, 45, 10, F6, 00, 01, 74, 05, F6, 06, 01, 74, E5, F6, 00, 02, 74, 05, F6, 06, 02, 74, DB, 33, C0, 40, 5F, 5E, 5D, C3, 55, 8B, EC, 8B, 4D, 10, 8B, 45, 0C, 81, E1, FF, FF, F7, FF...
 
[+]

Entropy:
7.8147  (probably packed)

Code size:
367.5 KB (376,320 bytes)

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

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

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