chinese_generic_botnet | a2d0dd1cb89611c7e979d65a73d51a573de55fb14f1130f28196618a828932c5

Bypass User Account Control

T1548.002

Disable or Modify Tools

Modify Registry

description	ioc	Process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	a2d0dd1cb89611c7e979d65a73d51a573de55fb14f1130f28196618a828932c5.exe

Windows security bypass 2 TTPs 2 IoCs

Disable or Modify Tools

Modify Registry

description	ioc	Process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows Defender\Exclusions\Paths\C:\Users\Admin\AppData\Local\Temp\a2d0dd1cb89611c7e979d65a73d51a573de55fb14f1130f28196618a828932c5.exe = "0"	a2d0dd1cb89611c7e979d65a73d51a573de55fb14f1130f28196618a828932c5.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows Defender\Exclusions\Paths	a2d0dd1cb89611c7e979d65a73d51a573de55fb14f1130f28196618a828932c5.exe

Chinese Botnet payload 2 IoCs

botnet

resource	yara_rule
behavioral2/memory/1632-21-0x0000000010000000-0x0000000010018000-memory.dmp	unk_chinese_botnet
behavioral2/memory/1632-44-0x0000000000400000-0x0000000000458000-memory.dmp	unk_chinese_botnet

Looks for VirtualBox Guest Additions in registry 2 TTPs 1 IoCs

evasion

Query Registry

Virtualization/Sandbox Evasion

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Oracle\VirtualBox Guest Additions	a2d0dd1cb89611c7e979d65a73d51a573de55fb14f1130f28196618a828932c5.exe

Looks for VMWare Tools registry key 2 TTPs 1 IoCs

evasion

Query Registry

Virtualization/Sandbox Evasion

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\VMware, Inc.\VMware Tools	a2d0dd1cb89611c7e979d65a73d51a573de55fb14f1130f28196618a828932c5.exe

Checks BIOS information in registry 2 TTPs 2 IoCs

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

Query Registry

System Information Discovery

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	a2d0dd1cb89611c7e979d65a73d51a573de55fb14f1130f28196618a828932c5.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	a2d0dd1cb89611c7e979d65a73d51a573de55fb14f1130f28196618a828932c5.exe

Checks computer location settings 2 TTPs 1 IoCs

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

Query Registry

System Information Discovery

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-1114462139-3090196418-29517368-1000\Control Panel\International\Geo\Nation	a2d0dd1cb89611c7e979d65a73d51a573de55fb14f1130f28196618a828932c5.exe

Windows security modification 2 TTPs 3 IoCs

Disable or Modify Tools

Modify Registry

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows Defender\Exclusions\Paths	a2d0dd1cb89611c7e979d65a73d51a573de55fb14f1130f28196618a828932c5.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows Defender\Exclusions	a2d0dd1cb89611c7e979d65a73d51a573de55fb14f1130f28196618a828932c5.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows Defender\Exclusions\Paths\C:\Users\Admin\AppData\Local\Temp\a2d0dd1cb89611c7e979d65a73d51a573de55fb14f1130f28196618a828932c5.exe = "0"	a2d0dd1cb89611c7e979d65a73d51a573de55fb14f1130f28196618a828932c5.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-1114462139-3090196418-29517368-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Hblvhrj.exe = "C:\\Windows\\Microsoft.NET\\Framework\\v4.0.30319\\jsc.exe"	jsc.exe

Checks whether UAC is enabled 1 TTPs 2 IoCs

System Information Discovery

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA	a2d0dd1cb89611c7e979d65a73d51a573de55fb14f1130f28196618a828932c5.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	a2d0dd1cb89611c7e979d65a73d51a573de55fb14f1130f28196618a828932c5.exe

Enumerates connected drives 3 TTPs 22 IoCs

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

Query Registry

Peripheral Device Discovery

T1120

System Information Discovery

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

Maps connected drives based on registry 3 TTPs 2 IoCs

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

Query Registry

Peripheral Device Discovery

T1120

System Information Discovery

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Disk\Enum	a2d0dd1cb89611c7e979d65a73d51a573de55fb14f1130f28196618a828932c5.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\disk\Enum\0	a2d0dd1cb89611c7e979d65a73d51a573de55fb14f1130f28196618a828932c5.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1724 set thread context of 1632	1724	a2d0dd1cb89611c7e979d65a73d51a573de55fb14f1130f28196618a828932c5.exe	92

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

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

System Information Discovery

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

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
3192	powershell.exe
3192	powershell.exe
1632	jsc.exe
1632	jsc.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	3192	powershell.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 1724 wrote to memory of 3192	1724	a2d0dd1cb89611c7e979d65a73d51a573de55fb14f1130f28196618a828932c5.exe	90
PID 1724 wrote to memory of 3192	1724	a2d0dd1cb89611c7e979d65a73d51a573de55fb14f1130f28196618a828932c5.exe	90
PID 1724 wrote to memory of 3192	1724	a2d0dd1cb89611c7e979d65a73d51a573de55fb14f1130f28196618a828932c5.exe	90
PID 1724 wrote to memory of 1632	1724	a2d0dd1cb89611c7e979d65a73d51a573de55fb14f1130f28196618a828932c5.exe	92
PID 1724 wrote to memory of 1632	1724	a2d0dd1cb89611c7e979d65a73d51a573de55fb14f1130f28196618a828932c5.exe	92
PID 1724 wrote to memory of 1632	1724	a2d0dd1cb89611c7e979d65a73d51a573de55fb14f1130f28196618a828932c5.exe	92
PID 1724 wrote to memory of 1632	1724	a2d0dd1cb89611c7e979d65a73d51a573de55fb14f1130f28196618a828932c5.exe	92
PID 1724 wrote to memory of 1632	1724	a2d0dd1cb89611c7e979d65a73d51a573de55fb14f1130f28196618a828932c5.exe	92
PID 1724 wrote to memory of 1632	1724	a2d0dd1cb89611c7e979d65a73d51a573de55fb14f1130f28196618a828932c5.exe	92
PID 1724 wrote to memory of 1632	1724	a2d0dd1cb89611c7e979d65a73d51a573de55fb14f1130f28196618a828932c5.exe	92
PID 1724 wrote to memory of 1632	1724	a2d0dd1cb89611c7e979d65a73d51a573de55fb14f1130f28196618a828932c5.exe	92
PID 1724 wrote to memory of 1632	1724	a2d0dd1cb89611c7e979d65a73d51a573de55fb14f1130f28196618a828932c5.exe	92

System policy modification 1 TTPs 1 IoCs

evasion

Modify Registry

description	ioc	Process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	a2d0dd1cb89611c7e979d65a73d51a573de55fb14f1130f28196618a828932c5.exe

C:\Users\Admin\AppData\Local\Temp\a2d0dd1cb89611c7e979d65a73d51a573de55fb14f1130f28196618a828932c5.exe
"C:\Users\Admin\AppData\Local\Temp\a2d0dd1cb89611c7e979d65a73d51a573de55fb14f1130f28196618a828932c5.exe"
1⤵
- UAC bypass
- Windows security bypass
- Looks for VirtualBox Guest Additions in registry
- Looks for VMWare Tools registry key
- Checks BIOS information in registry
- Checks computer location settings
- Windows security modification
- Checks whether UAC is enabled
- Maps connected drives based on registry
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
- System policy modification
PID:1724
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Local\Temp\a2d0dd1cb89611c7e979d65a73d51a573de55fb14f1130f28196618a828932c5.exe" -Force
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:3192
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\jsc.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\jsc.exe"
  2⤵
  - Adds Run key to start application
  - Enumerates connected drives
  - Checks processor information in registry
  - Suspicious behavior: EnumeratesProcesses
  PID:1632

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Privilege Escalation

Abuse Elevation Control Mechanism

T1548

Bypass User Account Control

T1548.002

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

Abuse Elevation Control Mechanism

T1548

Bypass User Account Control

T1548.002

Impair Defenses

T1562

Disable or Modify Tools

Modify Registry

Virtualization/Sandbox Evasion

Credential Access

Discovery

Peripheral Device Discovery

T1120

Query Registry

System Information Discovery

Virtualization/Sandbox Evasion