gh0strat | 236bc5f3d5b4a1435ef10b477ff15093562dca0ae87e6c9fd5bcad760ba497f5

General

Target

236bc5f3d5b4a1435ef10b477ff15093562dca0ae87e6c9fd5bcad760ba497f5N.dll
Size

137KB
MD5

9e98bbd8300724a3d379d9dcc537b6d0
SHA1

d7e44e2e8eedee7d5ce003043eb6c1acf84f4d83
SHA256

236bc5f3d5b4a1435ef10b477ff15093562dca0ae87e6c9fd5bcad760ba497f5
SHA512

d2c2c686365b37f2de062f341e2eb58b7061dec11d611e1889560498c933fd47544ddeb5b8f824bd6243966e3dcd85be0f63ddc43c6437d4741b4d4c4e013129
SSDEEP

3072:OR02WMK8RJGInTlhnaBanONVk40rpg4yeF/TyUGSK9FrafcUksPxx6iTUu/:b25GgFny61mra9

Score

10^/10

Malware Config

Signatures

Gh0st RAT payload 4 IoCs

resource	yara_rule
behavioral2/memory/3172-4-0x0000000010000000-0x000000001001C000-memory.dmp	family_gh0strat
behavioral2/memory/3172-5-0x0000000010000000-0x000000001001C000-memory.dmp	family_gh0strat
behavioral2/memory/3172-6-0x0000000010000000-0x000000001001C000-memory.dmp	family_gh0strat
behavioral2/memory/3172-32-0x0000000010000000-0x000000001001C000-memory.dmp	family_gh0strat

Gh0strat
Gh0st RAT is a remote access tool (RAT) with its source code public and it has been used by multiple Chinese groups.
rat gh0strat
Gh0strat family
gh0strat

Blocklisted process makes network request 1 IoCs

flow	pid	Process
8	3172	rundll32.exe

Boot or Logon Autostart Execution: Port Monitors 1 TTPs 16 IoCs

Adversaries may use port monitors to run an adversary supplied DLL during system boot for persistence or privilege escalation.

persistence

Port Monitors

T1547.010

description	ioc	Process
Key created	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\Print\Monitors\Appmon	Spoolsv.exe
Key created	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\Print\Monitors\Appmon\Ports	Spoolsv.exe
Key created	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\Print\Monitors\Microsoft Shared Fax Monitor	Spoolsv.exe
Key created	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\Print\Monitors\Standard TCP/IP Port	Spoolsv.exe
Key created	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\Print\Monitors\WSD Port	Spoolsv.exe
Key created	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\Print\Monitors\SCSI Port Monitor	svchost.exe
Key created	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\Print\Monitors\WSD Port\Adapters\IPP	Spoolsv.exe
Key created	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\Print\Monitors\SCSI Port Monitor	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\Print\Monitors\SCSI Port Monitor\Driver = "scsimon.dll"	svchost.exe
Key created	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\Print\Monitors\Standard TCP/IP Port\Ports	Spoolsv.exe
Key created	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\Print\Monitors\USB Monitor	Spoolsv.exe
Key created	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\Print\Monitors\WSD Port\Adapters\WSPrint	Spoolsv.exe
Set value (str)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\Print\Monitors\SCSI Port Monitor\Driver = "scsimon.dll"	rundll32.exe
Key created	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\Print\Monitors\Local Port	Spoolsv.exe
Key created	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\Print\Monitors\WSD Port\Ports	Spoolsv.exe
Key created	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\Print\Monitors\WSD Port\Adapters\WSPrint\OfflinePorts	Spoolsv.exe

Sets service image path in registry 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Spooler\ImagePath = "Spoolsv.exe"	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Spooler\ImagePath = "Spoolsv.exe"	svchost.exe

ACProtect 1.3x - 1.4x DLL software 15 IoCs

Detects file using ACProtect software.

resource	yara_rule
behavioral2/memory/3172-4-0x0000000010000000-0x000000001001C000-memory.dmp	acprotect
behavioral2/memory/3172-5-0x0000000010000000-0x000000001001C000-memory.dmp	acprotect
behavioral2/memory/3172-6-0x0000000010000000-0x000000001001C000-memory.dmp	acprotect
behavioral2/memory/3172-7-0x0000000002A60000-0x0000000002A7D000-memory.dmp	acprotect
behavioral2/memory/3172-10-0x0000000002A60000-0x0000000002A7D000-memory.dmp	acprotect
behavioral2/memory/3172-13-0x0000000002A60000-0x0000000002A7D000-memory.dmp	acprotect
behavioral2/memory/3172-12-0x0000000002A60000-0x0000000002A7D000-memory.dmp	acprotect
behavioral2/memory/3172-17-0x0000000002A60000-0x0000000002A7D000-memory.dmp	acprotect
behavioral2/memory/1876-25-0x0000000000DE0000-0x0000000000DFD000-memory.dmp	acprotect
behavioral2/memory/1876-24-0x0000000000DE0000-0x0000000000DFD000-memory.dmp	acprotect
behavioral2/memory/1876-30-0x0000000000DE0000-0x0000000000DFD000-memory.dmp	acprotect
behavioral2/memory/1876-31-0x0000000000DE0000-0x0000000000DFD000-memory.dmp	acprotect
behavioral2/memory/1876-29-0x0000000000DE0000-0x0000000000DFD000-memory.dmp	acprotect
behavioral2/memory/1876-28-0x0000000000DE0000-0x0000000000DFD000-memory.dmp	acprotect
behavioral2/memory/3172-32-0x0000000010000000-0x000000001001C000-memory.dmp	acprotect

Drops file in System32 directory 6 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\com\comb.dll	rundll32.exe
File opened for modification	C:\Windows\SysWOW64\com\comb.dll	svchost.exe
File opened for modification	C:\Windows\SysWOW64\Miscson.dll	svchost.exe
File created	C:\Windows\SysWOW64\Miscson.dll	svchost.exe
File opened for modification	C:\Windows\SysWOW64\scsimon.dll	svchost.exe
File created	C:\Windows\SysWOW64\scsimon.dll	svchost.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3172 set thread context of 1876	3172	rundll32.exe	85

Drops file in Windows directory 4 IoCs

description	ioc	Process
File opened for modification	C:\Windows\AppPatch\AcSvcst.dll	rundll32.exe
File created	C:\Windows\AppPatch\AcSvcst.dll	rundll32.exe
File opened for modification	C:\Windows\AppPatch\ComBack.Dll	rundll32.exe
File created	C:\Windows\AppPatch\ComBack.Dll	rundll32.exe

Program crash 1 IoCs

pid	pid_target	Process	procid_target
1072	3172	WerFault.exe	82

System Location Discovery: System Language Discovery 1 TTPs 2 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	rundll32.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe

Checks SCSI registry key(s) 3 TTPs 12 IoCs

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

Query Registry

T1012

Peripheral Device Discovery

T1120

System Information Discovery

T1082

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\CdRom&Ven_Msft&Prod_Virtual_DVD-ROM\2&1f4adffe&0&000002	Spoolsv.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\CdRom&Ven_Msft&Prod_Virtual_DVD-ROM\2&1f4adffe&0&000002\Properties\{3b2ce006-5e61-4fde-bab8-9b8aac9b26df}\0002	Spoolsv.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\Disk&Ven_WDC&Prod_WDS100T2B0A\4&215468a5&0&000000\HardwareID	Spoolsv.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\CdRom&Ven_QEMU&Prod_QEMU_DVD-ROM\4&215468a5&0&010000\HardwareID	Spoolsv.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\CdRom&Ven_QEMU&Prod_QEMU_DVD-ROM\4&215468a5&0&010000	Spoolsv.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\CdRom&Ven_QEMU&Prod_QEMU_DVD-ROM\4&215468a5&0&010000\Properties\{3b2ce006-5e61-4fde-bab8-9b8aac9b26df}\0002	Spoolsv.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\CdRom&Ven_Msft&Prod_Virtual_DVD-ROM\2&1f4adffe&0&000001\HardwareID	Spoolsv.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\CdRom&Ven_Msft&Prod_Virtual_DVD-ROM\2&1f4adffe&0&000002\HardwareID	Spoolsv.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\CdRom&Ven_Msft&Prod_Virtual_DVD-ROM\2&1f4adffe&0&000001	Spoolsv.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\CdRom&Ven_Msft&Prod_Virtual_DVD-ROM\2&1f4adffe&0&000001\Properties\{3b2ce006-5e61-4fde-bab8-9b8aac9b26df}\0002	Spoolsv.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\Disk&Ven_WDC&Prod_WDS100T2B0A\4&215468a5&0&000000	Spoolsv.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\Disk&Ven_WDC&Prod_WDS100T2B0A\4&215468a5&0&000000\Properties\{3b2ce006-5e61-4fde-bab8-9b8aac9b26df}\0002	Spoolsv.exe

Modifies data under HKEY_USERS 22 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-19\Software\Microsoft\Windows NT\CurrentVersion\Devices	Spoolsv.exe
Set value (str)	\REGISTRY\USER\S-1-5-19\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Devices\Fax = "winspool,Ne02:"	Spoolsv.exe
Set value (str)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows NT\CurrentVersion\PrinterPorts\Send To OneNote 2016 = "winspool,nul:,15,45"	Spoolsv.exe
Set value (str)	\REGISTRY\USER\S-1-5-19\SOFTWARE\Microsoft\Windows NT\CurrentVersion\PrinterPorts\Microsoft Print to PDF = "winspool,Ne01:,15,45"	Spoolsv.exe
Set value (str)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Devices\Send To OneNote 2016 = "winspool,nul:"	Spoolsv.exe
Set value (str)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows NT\CurrentVersion\PrinterPorts\Microsoft XPS Document Writer = "winspool,Ne00:,15,45"	Spoolsv.exe
Key created	\REGISTRY\USER\S-1-5-19\Software\Microsoft\Windows NT\CurrentVersion\PrinterPorts	Spoolsv.exe
Key created	\REGISTRY\USER\S-1-5-20\Software\Microsoft\Windows NT\CurrentVersion\Devices	Spoolsv.exe
Key created	\REGISTRY\USER\S-1-5-20\Software\Microsoft\Windows NT\CurrentVersion\PrinterPorts	Spoolsv.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows NT\CurrentVersion\PrinterPorts	Spoolsv.exe
Set value (str)	\REGISTRY\USER\S-1-5-19\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Devices\Microsoft Print to PDF = "winspool,Ne01:"	Spoolsv.exe
Set value (str)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows NT\CurrentVersion\PrinterPorts\Microsoft Print to PDF = "winspool,Ne01:,15,45"	Spoolsv.exe
Set value (str)	\REGISTRY\USER\S-1-5-19\SOFTWARE\Microsoft\Windows NT\CurrentVersion\PrinterPorts\Fax = "winspool,Ne02:,15,45"	Spoolsv.exe
Set value (str)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Devices\Microsoft XPS Document Writer = "winspool,Ne00:"	Spoolsv.exe
Set value (str)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Devices\Microsoft Print to PDF = "winspool,Ne01:"	Spoolsv.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows NT\CurrentVersion\Devices	Spoolsv.exe
Set value (str)	\REGISTRY\USER\S-1-5-19\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Devices\Send To OneNote 2016 = "winspool,nul:"	Spoolsv.exe
Set value (str)	\REGISTRY\USER\S-1-5-19\SOFTWARE\Microsoft\Windows NT\CurrentVersion\PrinterPorts\Send To OneNote 2016 = "winspool,nul:,15,45"	Spoolsv.exe
Set value (str)	\REGISTRY\USER\S-1-5-19\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Devices\Microsoft XPS Document Writer = "winspool,Ne00:"	Spoolsv.exe
Set value (str)	\REGISTRY\USER\S-1-5-19\SOFTWARE\Microsoft\Windows NT\CurrentVersion\PrinterPorts\Microsoft XPS Document Writer = "winspool,Ne00:,15,45"	Spoolsv.exe
Set value (str)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Devices\Fax = "winspool,Ne02:"	Spoolsv.exe
Set value (str)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows NT\CurrentVersion\PrinterPorts\Fax = "winspool,Ne02:,15,45"	Spoolsv.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	3172	rundll32.exe
Token: SeDebugPrivilege	1876	svchost.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 372 wrote to memory of 3172	372	rundll32.exe	82
PID 372 wrote to memory of 3172	372	rundll32.exe	82
PID 372 wrote to memory of 3172	372	rundll32.exe	82
PID 3172 wrote to memory of 1876	3172	rundll32.exe	85
PID 3172 wrote to memory of 1876	3172	rundll32.exe	85
PID 3172 wrote to memory of 1876	3172	rundll32.exe	85
PID 3172 wrote to memory of 1876	3172	rundll32.exe	85

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\236bc5f3d5b4a1435ef10b477ff15093562dca0ae87e6c9fd5bcad760ba497f5N.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:372
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\236bc5f3d5b4a1435ef10b477ff15093562dca0ae87e6c9fd5bcad760ba497f5N.dll,#1
  2⤵
  - Blocklisted process makes network request
  - Boot or Logon Autostart Execution: Port Monitors
  - Sets service image path in registry
  - Drops file in System32 directory
  - Suspicious use of SetThreadContext
  - Drops file in Windows directory
  - System Location Discovery: System Language Discovery
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:3172
- - C:\Windows\SysWOW64\svchost.exe
    C:\Windows\system32\svchost.exe -k rundll32
    3⤵
    - Boot or Logon Autostart Execution: Port Monitors
    - Sets service image path in registry
    - Drops file in System32 directory
    - System Location Discovery: System Language Discovery
    - Suspicious use of AdjustPrivilegeToken
    PID:1876
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 3172 -s 616
    3⤵
    - Program crash
    PID:1072

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 416 -p 3172 -ip 3172
1⤵
PID:100

C:\Windows\system32\Spoolsv.exe
Spoolsv.exe
1⤵
- Boot or Logon Autostart Execution: Port Monitors
- Checks SCSI registry key(s)
- Modifies data under HKEY_USERS
PID:3888

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

2

T1547

Port Monitors

1

T1547.010

Registry Run Keys / Startup Folder

1

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

2

T1547

Port Monitors

1

T1547.010

Registry Run Keys / Startup Folder

1

T1547.001

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

Peripheral Device Discovery

Query Registry

System Information Discovery

1

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Windows\AppPatch\ComBack.Dll

Filesize
137KB

MD5
f83f53cec86be35e04c2454583c6c102

SHA1
4965e38c80cba7ca6a38d6ac309abad5c7002bdc

SHA256
1247c83edce17c174b248232fae3721759311d90e3e17a9cfe3450dc47a378a5

SHA512
cf62beb602a88df1b065db4662c3116d8b49f3ddf7718edca1db4f29ee6107ccde84f72872392625f9753a25b6ab68cee4a040651a005e175733c532fa4274eb

Download Submit
C:\Windows\SysWOW64\com\comb.dll

Filesize
128B

MD5
ccbb6b226eaa3d16bb2a9da2ece945cd

SHA1
711b50df603ee866f68670d2adfc3b73e61cf557

SHA256
f4b8b4cf11f76a2854d6a8b5060da68361f9964587821c7b91ea25fa5f964915

SHA512
37b7ed1be50470bbcaa8d8df70743b3c4d6ada3e534ef7ade6c3faf498137a5ea63b67d736c8b07d4961bf1d052e02b7508373fa5a4bcbe68d2aaf93454b1107

Download Submit
memory/1876-26-0x0000000000C40000-0x0000000000C67000-memory.dmp

Filesize
156KB

Download
memory/1876-25-0x0000000000DE0000-0x0000000000DFD000-memory.dmp

Filesize
116KB

Download
memory/1876-28-0x0000000000DE0000-0x0000000000DFD000-memory.dmp

Filesize
116KB

Download
memory/1876-29-0x0000000000DE0000-0x0000000000DFD000-memory.dmp

Filesize
116KB

Download
memory/1876-31-0x0000000000DE0000-0x0000000000DFD000-memory.dmp

Filesize
116KB

Download
memory/1876-16-0x0000000000C40000-0x0000000000C67000-memory.dmp

Filesize
156KB

Download
memory/1876-30-0x0000000000DE0000-0x0000000000DFD000-memory.dmp

Filesize
116KB

Download
memory/1876-15-0x0000000000890000-0x00000000008B3000-memory.dmp

Filesize
140KB

Download
memory/1876-14-0x0000000000C40000-0x0000000000C67000-memory.dmp

Filesize
156KB

Download
memory/1876-24-0x0000000000DE0000-0x0000000000DFD000-memory.dmp

Filesize
116KB

Download
memory/3172-6-0x0000000010000000-0x000000001001C000-memory.dmp

Filesize
112KB

Download
memory/3172-5-0x0000000010000000-0x000000001001C000-memory.dmp

Filesize
112KB

Download
memory/3172-7-0x0000000002A60000-0x0000000002A7D000-memory.dmp

Filesize
116KB

Download
memory/3172-4-0x0000000010000000-0x000000001001C000-memory.dmp

Filesize
112KB

Download
memory/3172-17-0x0000000002A60000-0x0000000002A7D000-memory.dmp

Filesize
116KB

Download
memory/3172-12-0x0000000002A60000-0x0000000002A7D000-memory.dmp

Filesize
116KB

Download
memory/3172-13-0x0000000002A60000-0x0000000002A7D000-memory.dmp

Filesize
116KB

Download
memory/3172-10-0x0000000002A60000-0x0000000002A7D000-memory.dmp

Filesize
116KB

Download
memory/3172-32-0x0000000010000000-0x000000001001C000-memory.dmp

Filesize
112KB

Download
memory/3172-35-0x0000000043E50000-0x0000000043E77000-memory.dmp

Filesize
156KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads