Analysis
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max time kernel
117s -
max time network
140s -
platform
windows10_x64 -
resource
win10-en-20210920 -
submitted
22-09-2021 21:07
Static task
static1
Behavioral task
behavioral1
Sample
????????????????.cmd.exe
Resource
win7-en-20210920
Behavioral task
behavioral2
Sample
????????????????.cmd.exe
Resource
win10-en-20210920
General
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Target
????????????????.cmd.exe
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Size
1.2MB
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MD5
57523bab2ccf571fcecc172ea5f44959
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SHA1
b214a6cc13e5022779b6ecaf0364a0464defa4ca
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SHA256
ce2b941076f27243a2ef984e5d6b045c505a98bc73a5a3b1152112228079e68b
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SHA512
197da439cac7e8eb38e60f4be9f832ac91d9b88cc5021ac9036822f87dfb9cb8c72171bceb7b1e5034074ae5de0cb40e2d60c3d73f9820cbd73c4ffeac0ae979
Malware Config
Signatures
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Generic Chinese Botnet
A botnet originating from China which is currently unnamed publicly.
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Chinese Botnet Payload 1 IoCs
resource yara_rule behavioral2/memory/3936-115-0x0000000010000000-0x0000000010018000-memory.dmp unk_chinese_botnet -
Adds Run key to start application 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-2481030822-2828258191-1606198294-1000\Software\Microsoft\Windows\CurrentVersion\Run\Dyydhdv.exe = "C:\\Users\\Admin\\AppData\\Local\\Temp\\________________.cmd.exe" ________________.cmd.exe -
Enumerates connected drives 3 TTPs 23 IoCs
Attempts to read the root path of hard drives other than the default C: drive.
description ioc Process File opened (read-only) \??\J: ________________.cmd.exe File opened (read-only) \??\L: ________________.cmd.exe File opened (read-only) \??\Q: ________________.cmd.exe File opened (read-only) \??\R: ________________.cmd.exe File opened (read-only) \??\S: ________________.cmd.exe File opened (read-only) \??\B: ________________.cmd.exe File opened (read-only) \??\E: ________________.cmd.exe File opened (read-only) \??\H: ________________.cmd.exe File opened (read-only) \??\W: ________________.cmd.exe File opened (read-only) \??\Y: ________________.cmd.exe File opened (read-only) \??\Z: ________________.cmd.exe File opened (read-only) \??\T: ________________.cmd.exe File opened (read-only) \??\X: ________________.cmd.exe File opened (read-only) \??\F: ________________.cmd.exe File opened (read-only) \??\I: ________________.cmd.exe File opened (read-only) \??\P: ________________.cmd.exe File opened (read-only) \??\O: ________________.cmd.exe File opened (read-only) \??\U: ________________.cmd.exe File opened (read-only) \??\V: ________________.cmd.exe File opened (read-only) \??\G: ________________.cmd.exe File opened (read-only) \??\K: ________________.cmd.exe File opened (read-only) \??\M: ________________.cmd.exe File opened (read-only) \??\N: ________________.cmd.exe -
Checks processor information in registry 2 TTPs 2 IoCs
Processor information is often read in order to detect sandboxing environments.
description ioc Process Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz ________________.cmd.exe Key opened \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0 ________________.cmd.exe -
Suspicious behavior: EnumeratesProcesses 2 IoCs
pid Process 3936 ________________.cmd.exe 3936 ________________.cmd.exe -
Suspicious use of SetWindowsHookEx 1 IoCs
pid Process 3936 ________________.cmd.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\________________.cmd.exe"C:\Users\Admin\AppData\Local\Temp\________________.cmd.exe"1⤵
- Adds Run key to start application
- Enumerates connected drives
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of SetWindowsHookEx
PID:3936