chinese_generic_botnet | a2d0dd1cb89611c7e979d65a73d51a573de55fb14f1130f28196618a828932c5

Bypass User Account Control

T1548.002

Disable or Modify Tools

T1562.001

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

T1562.001

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
behavioral1/memory/2664-11-0x0000000010000000-0x0000000010018000-memory.dmp	unk_chinese_botnet
behavioral1/memory/2664-23-0x0000000000400000-0x0000000000458000-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

Executes dropped EXE 1 IoCs

pid	Process
1160	Hblvhrj.exe

Windows security modification 2 TTPs 3 IoCs

Disable or Modify Tools

T1562.001

Modify Registry

description	ioc	Process
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
Key created	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows Defender\Exclusions\Paths	a2d0dd1cb89611c7e979d65a73d51a573de55fb14f1130f28196618a828932c5.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)	\??\R:	jsc.exe
File opened (read-only)	\??\X:	jsc.exe
File opened (read-only)	\??\Y:	jsc.exe
File opened (read-only)	\??\K:	jsc.exe
File opened (read-only)	\??\N:	jsc.exe
File opened (read-only)	\??\Q:	jsc.exe
File opened (read-only)	\??\S:	jsc.exe
File opened (read-only)	\??\B:	jsc.exe
File opened (read-only)	\??\G:	jsc.exe
File opened (read-only)	\??\H:	jsc.exe
File opened (read-only)	\??\I:	jsc.exe
File opened (read-only)	\??\U:	jsc.exe
File opened (read-only)	\??\Z:	jsc.exe
File opened (read-only)	\??\T:	jsc.exe
File opened (read-only)	\??\V:	jsc.exe
File opened (read-only)	\??\E:	jsc.exe
File opened (read-only)	\??\J:	jsc.exe
File opened (read-only)	\??\M:	jsc.exe
File opened (read-only)	\??\P:	jsc.exe
File opened (read-only)	\??\L:	jsc.exe
File opened (read-only)	\??\O:	jsc.exe
File opened (read-only)	\??\W:	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 2120 set thread context of 2664	2120	a2d0dd1cb89611c7e979d65a73d51a573de55fb14f1130f28196618a828932c5.exe	31

Drops file in Program Files directory 2 IoCs

description	ioc	Process
File created	C:\Program Files (x86)\Hblvhrj.exe	jsc.exe
File opened for modification	C:\Program Files (x86)\Hblvhrj.exe	jsc.exe

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

Modifies data under HKEY_USERS 3 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\	Hblvhrj.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\UNCAsIntranet = "0"	Hblvhrj.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\AutoDetect = "1"	Hblvhrj.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
2896	powershell.exe
2664	jsc.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2896	powershell.exe

Suspicious use of WriteProcessMemory 14 IoCs

description	pid	Process	procid_target
PID 2120 wrote to memory of 2896	2120	a2d0dd1cb89611c7e979d65a73d51a573de55fb14f1130f28196618a828932c5.exe	29
PID 2120 wrote to memory of 2896	2120	a2d0dd1cb89611c7e979d65a73d51a573de55fb14f1130f28196618a828932c5.exe	29
PID 2120 wrote to memory of 2896	2120	a2d0dd1cb89611c7e979d65a73d51a573de55fb14f1130f28196618a828932c5.exe	29
PID 2120 wrote to memory of 2896	2120	a2d0dd1cb89611c7e979d65a73d51a573de55fb14f1130f28196618a828932c5.exe	29
PID 2120 wrote to memory of 2664	2120	a2d0dd1cb89611c7e979d65a73d51a573de55fb14f1130f28196618a828932c5.exe	31
PID 2120 wrote to memory of 2664	2120	a2d0dd1cb89611c7e979d65a73d51a573de55fb14f1130f28196618a828932c5.exe	31
PID 2120 wrote to memory of 2664	2120	a2d0dd1cb89611c7e979d65a73d51a573de55fb14f1130f28196618a828932c5.exe	31
PID 2120 wrote to memory of 2664	2120	a2d0dd1cb89611c7e979d65a73d51a573de55fb14f1130f28196618a828932c5.exe	31
PID 2120 wrote to memory of 2664	2120	a2d0dd1cb89611c7e979d65a73d51a573de55fb14f1130f28196618a828932c5.exe	31
PID 2120 wrote to memory of 2664	2120	a2d0dd1cb89611c7e979d65a73d51a573de55fb14f1130f28196618a828932c5.exe	31
PID 2120 wrote to memory of 2664	2120	a2d0dd1cb89611c7e979d65a73d51a573de55fb14f1130f28196618a828932c5.exe	31
PID 2120 wrote to memory of 2664	2120	a2d0dd1cb89611c7e979d65a73d51a573de55fb14f1130f28196618a828932c5.exe	31
PID 2120 wrote to memory of 2664	2120	a2d0dd1cb89611c7e979d65a73d51a573de55fb14f1130f28196618a828932c5.exe	31
PID 2120 wrote to memory of 2664	2120	a2d0dd1cb89611c7e979d65a73d51a573de55fb14f1130f28196618a828932c5.exe	31

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
- 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:2120
- 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:2896
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\jsc.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\jsc.exe"
  2⤵
  - Enumerates connected drives
  - Drops file in Program Files directory
  - Checks processor information in registry
  - Suspicious behavior: EnumeratesProcesses
  PID:2664

C:\Program Files (x86)\Hblvhrj.exe
"C:\Program Files (x86)\Hblvhrj.exe"
1⤵
- Executes dropped EXE
- Modifies data under HKEY_USERS
PID:1160

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Abuse Elevation Control Mechanism

T1548

Bypass User Account Control

T1548.002

Defense Evasion

Abuse Elevation Control Mechanism

T1548

Bypass User Account Control

T1548.002

Impair Defenses

3

T1562

Disable or Modify Tools

Modify Registry

Virtualization/Sandbox Evasion

2

Credential Access

Discovery

Peripheral Device Discovery

Query Registry

System Information Discovery

6

Virtualization/Sandbox Evasion

2