chinese_generic_botnet | 70969f1d56ec1ddcae3fc50545c0a351b798226c62d870db8ae5170eeec67694

General

Target

tmp.exe
Size

1.1MB
MD5

d6df53506b123f5717463d0355336979
SHA1

7720fb4b89a4ebcef32a6d6a9a7a88c65cad2c14
SHA256

70969f1d56ec1ddcae3fc50545c0a351b798226c62d870db8ae5170eeec67694
SHA512

1bfefa221ed77ef05fc72fbc20a322cae990b2a33a9af47b9ee4d9fa1c09d5c81f6a8fd8496ed43a47ee2862e1e2bf1651b4cca2f5e9e23e491c3d4b3249ad2f

Score

10^/10

chinese_generic_botnet botnet macro 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/4764-135-0x0000000010000000-0x0000000010018000-memory.dmp	unk_chinese_botnet

Executes dropped EXE 2 IoCs

pid	Process
4764	._cache_tmp.exe
1268	Synaptics.exe

Suspicious Office macro 1 IoCs

Office document equipped with macros.

macro

resource	yara_rule
behavioral2/files/0x000500000001e7ce-146.dat	office_macros

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-1346565761-3498240568-4147300184-1000\Control Panel\International\Geo\Nation	tmp.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\Synaptics Pointing Device Driver = "C:\\ProgramData\\Synaptics\\Synaptics.exe"	tmp.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1346565761-3498240568-4147300184-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Peahrfb.exe = "C:\\Users\\Admin\\AppData\\Local\\Temp\\._cache_tmp.exe"	._cache_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)	\??\E:	._cache_tmp.exe
File opened (read-only)	\??\K:	._cache_tmp.exe
File opened (read-only)	\??\R:	._cache_tmp.exe
File opened (read-only)	\??\T:	._cache_tmp.exe
File opened (read-only)	\??\Y:	._cache_tmp.exe
File opened (read-only)	\??\I:	._cache_tmp.exe
File opened (read-only)	\??\L:	._cache_tmp.exe
File opened (read-only)	\??\S:	._cache_tmp.exe
File opened (read-only)	\??\X:	._cache_tmp.exe
File opened (read-only)	\??\Z:	._cache_tmp.exe
File opened (read-only)	\??\B:	._cache_tmp.exe
File opened (read-only)	\??\G:	._cache_tmp.exe
File opened (read-only)	\??\N:	._cache_tmp.exe
File opened (read-only)	\??\Q:	._cache_tmp.exe
File opened (read-only)	\??\V:	._cache_tmp.exe
File opened (read-only)	\??\W:	._cache_tmp.exe
File opened (read-only)	\??\F:	._cache_tmp.exe
File opened (read-only)	\??\H:	._cache_tmp.exe
File opened (read-only)	\??\J:	._cache_tmp.exe
File opened (read-only)	\??\M:	._cache_tmp.exe
File opened (read-only)	\??\O:	._cache_tmp.exe
File opened (read-only)	\??\P:	._cache_tmp.exe
File opened (read-only)	\??\U:	._cache_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 5 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	EXCEL.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz	EXCEL.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	EXCEL.EXE
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	._cache_tmp.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz	._cache_tmp.exe

Enumerates system info in registry 2 TTPs 3 IoCs

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\BIOS	EXCEL.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemFamily	EXCEL.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemSKU	EXCEL.EXE

Modifies registry class 1 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{1f3427c8-5c10-4210-aa03-2ee45287d668}\Instance\	tmp.exe

Suspicious behavior: AddClipboardFormatListener 1 IoCs

pid	Process
2752	EXCEL.EXE

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
4764	._cache_tmp.exe
4764	._cache_tmp.exe

Suspicious use of SetWindowsHookEx 5 IoCs

pid	Process
2752	EXCEL.EXE
2752	EXCEL.EXE
2752	EXCEL.EXE
2752	EXCEL.EXE
2752	EXCEL.EXE

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 3268 wrote to memory of 4764	3268	tmp.exe	81
PID 3268 wrote to memory of 4764	3268	tmp.exe	81
PID 3268 wrote to memory of 4764	3268	tmp.exe	81
PID 3268 wrote to memory of 1268	3268	tmp.exe	82
PID 3268 wrote to memory of 1268	3268	tmp.exe	82
PID 3268 wrote to memory of 1268	3268	tmp.exe	82

C:\Users\Admin\AppData\Local\Temp\tmp.exe
"C:\Users\Admin\AppData\Local\Temp\tmp.exe"
1⤵
- Checks computer location settings
- Adds Run key to start application
- Modifies registry class
- Suspicious use of WriteProcessMemory
PID:3268
- C:\Users\Admin\AppData\Local\Temp\._cache_tmp.exe
  "C:\Users\Admin\AppData\Local\Temp\._cache_tmp.exe"
  2⤵
  - Executes dropped EXE
  - Adds Run key to start application
  - Enumerates connected drives
  - Checks processor information in registry
  - Suspicious behavior: EnumeratesProcesses
  PID:4764
- C:\ProgramData\Synaptics\Synaptics.exe
  "C:\ProgramData\Synaptics\Synaptics.exe" InjUpdate
  2⤵
  - Executes dropped EXE
  PID:1268

C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE
"C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE" /automation -Embedding
1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
PID:2752

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

Peripheral Device Discovery

Query Registry

System Information Discovery

5

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

memory/1268-137-0x0000000000550000-0x0000000000551000-memory.dmp

Filesize
4KB

Download
memory/2752-139-0x00007FFB4AD2D000-0x00007FFB4AD2E000-memory.dmp

Filesize
4KB

Download
memory/2752-138-0x00007FFB0AD10000-0x00007FFB0AD20000-memory.dmp

Filesize
64KB

Download
memory/2752-140-0x00007FFB4AD30000-0x00007FFB4AD31000-memory.dmp

Filesize
4KB

Download
memory/2752-141-0x00007FFB0AD10000-0x00007FFB0AD20000-memory.dmp

Filesize
64KB

Download
memory/2752-142-0x00007FFB0AD10000-0x00007FFB0AD20000-memory.dmp

Filesize
64KB

Download
memory/2752-143-0x00007FFB0AD10000-0x00007FFB0AD20000-memory.dmp

Filesize
64KB

Download
memory/2752-144-0x00007FFB0AD10000-0x00007FFB0AD20000-memory.dmp

Filesize
64KB

Download
memory/2752-145-0x00007FFB4AD2D000-0x00007FFB4AD2E000-memory.dmp

Filesize
4KB

Download
memory/3268-130-0x00000000024A0000-0x00000000024A1000-memory.dmp

Filesize
4KB

Download
memory/4764-135-0x0000000010000000-0x0000000010018000-memory.dmp

Filesize
96KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads