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lyd2dazg2.exe

Beijing Caiyunshidai Technology Co., Ltd.

The application lyd2dazg2.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:
656f4298cf443fe97131f7f920e1c465

SHA-1:
c6c2bd5fc2672837b9791699544529d1317ff76c

SHA-256:
bc88d1c40ecbbf7899e9090e6e91ff3b49641a29baa1094029888022ae83912d

Scanner detections:
1 / 68

Status:
Potentially unwanted

Analysis date:
1/2/2026 7:39:12 PM UTC  (today)

Scan engine
Detection
Engine version

Reason Heuristics
Adware.ELEX.SpeedSearch (M)
16.12.17.8

File size:
404.9 KB (414,648 bytes)

File type:
Executable application (Win32 EXE)

Common path:
C:\users\{user}\appdata\local\temp\{random}.tmp\lyd2dazg2.exe

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

Authority:
thawte, Inc.

Valid from:
12/13/2016 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:
08EB9EC9E1EFADC003EB5727AE70E20E

File PE Metadata
Compilation timestamp:
12/11/2016 7:34:10 PM

OS version:
5.1

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
12.0

Entry address:
0x86AD

Entry point:
E8, E7, C5, FF, FF, E9, AC, 30, 00, 00, 55, 8B, EC, 83, EC, 34, A1, 00, 30, 46, 00, 33, C5, 89, 45, FC, 57, 6A, 66, 33, FF, C7, 45, CC, 30, 00, 00, 00, 51, C7, 45, D0, 03, 00, 00, 00, C7, 45, D4, 42, 5D, 40, 00, 89, 7D, D8, 89, 7D, DC, 89, 4D, E0, FF, 15, 2C, C1, 45, 00, 68, 00, 7F, 00, 00, 57, 89, 45, E4, FF, 15, 28, C1, 45, 00, 6A, 66, FF, 75, E0, 89, 45, E8, C7, 45, EC, 06, 00, 00, 00, 89, 7D, F0, C7, 45, F4, F0, 14, 46, 00, FF, 15, 2C, C1, 45, 00, 89, 45, F8, 8D, 45, CC, 50, FF, 15, 24, C1, 45, 00, 8B...
 
[+]

Entropy:
7.8228  (probably packed)

Code size:
360.5 KB (369,152 bytes)

The file lyd2dazg2.exe has been seen being distributed by the following URL.

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

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