chinese_generic_botnet | a985a64aa7b6f5175e0f4e47b0eb41db10b2cb1236862f4610bcd09ead2fe663

Analysis

max time kernel
135s
max time network
154s
platform
windows10-2004_x64
resource
win10v2004-20220812-en
resource tags

arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
submitted
05-09-2022 04:29

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General

Target

tmp.exe
Size

362KB
MD5

af50ecd46089929f90385f6c90000c20
SHA1

9ae6f31c8f5b7f3b8c25d24bfe82c704b205beca
SHA256

a985a64aa7b6f5175e0f4e47b0eb41db10b2cb1236862f4610bcd09ead2fe663
SHA512

415a0a208b1ce87d2f43f4ff735afbc25ae4b6bfb683d39bca1ef8c6e81a07f9403182eebac912414da8fecef510375a8d4bb78b4934cd9dfcc3e53dc2a59259
SSDEEP

3072:N8jSZi34eTzl5IVp7Kw9ftm0dmNk7pzyEO05SVp14aJiwFXr:quZ5e65Q0djzKtawF7

Score

10^/10

chinese_generic_botnet botnet persistence

Malware Config

Signatures

Generic Chinese Botnet
A botnet originating from China which is currently unnamed publicly.
botnet chinese_generic_botnet

Chinese Botnet payload 1 IoCs

botnet

resource	yara_rule
behavioral2/memory/4148-133-0x0000000010000000-0x0000000010018000-memory.dmp	unk_chinese_botnet

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Terms.exe = "C:\\Users\\Admin\\AppData\\Local\\Temp\\tmp.exe"	tmp.exe

Enumerates connected drives 3 TTPs 23 IoCs

Attempts to read the root path of hard drives other than the default C: drive.

Query Registry

T1012

Peripheral Device Discovery

T1120

System Information Discovery

T1082

description	ioc	Process
File opened (read-only)	\??\Q:	tmp.exe
File opened (read-only)	\??\V:	tmp.exe
File opened (read-only)	\??\N:	tmp.exe
File opened (read-only)	\??\P:	tmp.exe
File opened (read-only)	\??\I:	tmp.exe
File opened (read-only)	\??\K:	tmp.exe
File opened (read-only)	\??\L:	tmp.exe
File opened (read-only)	\??\R:	tmp.exe
File opened (read-only)	\??\G:	tmp.exe
File opened (read-only)	\??\H:	tmp.exe
File opened (read-only)	\??\J:	tmp.exe
File opened (read-only)	\??\O:	tmp.exe
File opened (read-only)	\??\U:	tmp.exe
File opened (read-only)	\??\Z:	tmp.exe
File opened (read-only)	\??\B:	tmp.exe
File opened (read-only)	\??\E:	tmp.exe
File opened (read-only)	\??\S:	tmp.exe
File opened (read-only)	\??\T:	tmp.exe
File opened (read-only)	\??\W:	tmp.exe
File opened (read-only)	\??\X:	tmp.exe
File opened (read-only)	\??\Y:	tmp.exe
File opened (read-only)	\??\F:	tmp.exe
File opened (read-only)	\??\M:	tmp.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082

Checks processor information in registry 2 TTPs 2 IoCs

Processor information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	tmp.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz	tmp.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
4148	tmp.exe
4148	tmp.exe
4148	tmp.exe
4148	tmp.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 4148 wrote to memory of 920	4148	tmp.exe	83
PID 4148 wrote to memory of 920	4148	tmp.exe	83
PID 4148 wrote to memory of 920	4148	tmp.exe	83

C:\Users\Admin\AppData\Local\Temp\tmp.exe
"C:\Users\Admin\AppData\Local\Temp\tmp.exe"
1⤵
- Adds Run key to start application
- Enumerates connected drives
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:4148
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c md C:\windowss64
  2⤵
  PID:920

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

T1060

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Peripheral Device Discovery

T1120

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/4148-133-0x0000000010000000-0x0000000010018000-memory.dmp

Filesize
96KB

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