gh0strat | d73ab09820623e593999ed632c86c5f3b44237b872d4b24c2c262d1b66ecee37

General

Target

d73ab09820623e593999ed632c86c5f3b44237b872d4b24c2c262d1b66ecee37N.dll
Size

137KB
MD5

25150459a2d212276b7e33e7ddea3810
SHA1

6b35fb462b6df575c0787e1e6ad5fa8e1ed61021
SHA256

d73ab09820623e593999ed632c86c5f3b44237b872d4b24c2c262d1b66ecee37
SHA512

c96a378232f165faa8091695cc243cc10cec45ab65410814a2fdc04dede906af077d890c6e793268f4d7ddf5778018767c73195d63edb2939dc69fcb15d726a0
SSDEEP

3072:kR02WMK8RJGInTlhnaBanONVk40rpg4yeF/TyUGSK9FrafcUksPxx6iTUuT:B25GgFny61mraZ

Score

10^/10

gh0strat discovery persistence rat

Malware Config

Signatures

Gh0st RAT payload 3 IoCs

Processes:

resource	yara_rule
behavioral2/memory/4196-5-0x0000000010000000-0x000000001001C000-memory.dmp	family_gh0strat
behavioral2/memory/4196-6-0x0000000010000000-0x000000001001C000-memory.dmp	family_gh0strat
behavioral2/memory/4196-31-0x0000000010000000-0x000000001001C000-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

Processes:

rundll32.exe

flow pid process

7 4196 rundll32.exe

flow	pid	process
7	4196	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

Processes:

Spoolsv.exerundll32.exesvchost.exe

description	ioc	process
Key created	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\Print\Monitors\Appmon\Ports	Spoolsv.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\WSD Port\Adapters\WSPrint\OfflinePorts	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"	rundll32.exe
Key created	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\Print\Monitors\SCSI Port Monitor	svchost.exe
Key created	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\Print\Monitors\Local Port	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\WSD Port\Adapters\WSPrint	Spoolsv.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\USB Monitor	Spoolsv.exe
Key created	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\Print\Monitors\WSD 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\Appmon	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\Standard TCP/IP Port\Ports	Spoolsv.exe

Sets service image path in registry 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

svchost.exerundll32.exe

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

ACProtect 1.3x - 1.4x DLL software 15 IoCs

Detects file using ACProtect software.

Processes:

resource	yara_rule
behavioral2/memory/4196-5-0x0000000010000000-0x000000001001C000-memory.dmp	acprotect
behavioral2/memory/4196-7-0x0000000002ED0000-0x0000000002EED000-memory.dmp	acprotect
behavioral2/memory/4196-6-0x0000000010000000-0x000000001001C000-memory.dmp	acprotect
behavioral2/memory/4196-14-0x0000000002ED0000-0x0000000002EED000-memory.dmp	acprotect
behavioral2/memory/4196-18-0x0000000002ED0000-0x0000000002EED000-memory.dmp	acprotect
behavioral2/memory/4196-15-0x0000000002ED0000-0x0000000002EED000-memory.dmp	acprotect
behavioral2/memory/4196-13-0x0000000002ED0000-0x0000000002EED000-memory.dmp	acprotect
behavioral2/memory/4196-10-0x0000000002ED0000-0x0000000002EED000-memory.dmp	acprotect
behavioral2/memory/4936-24-0x0000000002C70000-0x0000000002C8D000-memory.dmp	acprotect
behavioral2/memory/4936-25-0x0000000002C70000-0x0000000002C8D000-memory.dmp	acprotect
behavioral2/memory/4936-29-0x0000000002C70000-0x0000000002C8D000-memory.dmp	acprotect
behavioral2/memory/4936-30-0x0000000002C70000-0x0000000002C8D000-memory.dmp	acprotect
behavioral2/memory/4936-28-0x0000000002C70000-0x0000000002C8D000-memory.dmp	acprotect
behavioral2/memory/4936-27-0x0000000002C70000-0x0000000002C8D000-memory.dmp	acprotect
behavioral2/memory/4196-31-0x0000000010000000-0x000000001001C000-memory.dmp	acprotect

Drops file in System32 directory 6 IoCs

Processes:

svchost.exerundll32.exe

description	ioc	process
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
File opened for modification	C:\Windows\SysWOW64\com\comb.dll	rundll32.exe
File opened for modification	C:\Windows\SysWOW64\com\comb.dll	svchost.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

rundll32.exe

description pid process target process

PID 4196 set thread context of 4936 4196 rundll32.exe svchost.exe

description	pid	process	target process
PID 4196 set thread context of 4936	4196	rundll32.exe	svchost.exe

Drops file in Windows directory 4 IoCs

Processes:

rundll32.exe

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

Processes:

WerFault.exe

pid pid_target process target process

2192 4196 WerFault.exe rundll32.exe

pid	pid_target	process	target process
2192	4196	WerFault.exe	rundll32.exe

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

Processes:

rundll32.exesvchost.exe

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

Processes:

Spoolsv.exe

description	ioc	process
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\CdRom&Ven_Msft&Prod_Virtual_DVD-ROM\2&1f4adffe&0&000002	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
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\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_Msft&Prod_Virtual_DVD-ROM\2&1f4adffe&0&000002\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\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&000002\HardwareID	Spoolsv.exe

Modifies data under HKEY_USERS 22 IoCs

Processes:

Spoolsv.exe

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

Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

rundll32.exesvchost.exe

description pid process

Token: SeDebugPrivilege 4196 rundll32.exe
Token: SeDebugPrivilege 4936 svchost.exe

description	pid	process
Token: SeDebugPrivilege	4196	rundll32.exe
Token: SeDebugPrivilege	4936	svchost.exe

Suspicious use of WriteProcessMemory 7 IoCs

Processes:

rundll32.exerundll32.exe

description	pid	process	target process
PID 2004 wrote to memory of 4196	2004	rundll32.exe	rundll32.exe
PID 2004 wrote to memory of 4196	2004	rundll32.exe	rundll32.exe
PID 2004 wrote to memory of 4196	2004	rundll32.exe	rundll32.exe
PID 4196 wrote to memory of 4936	4196	rundll32.exe	svchost.exe
PID 4196 wrote to memory of 4936	4196	rundll32.exe	svchost.exe
PID 4196 wrote to memory of 4936	4196	rundll32.exe	svchost.exe
PID 4196 wrote to memory of 4936	4196	rundll32.exe	svchost.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\d73ab09820623e593999ed632c86c5f3b44237b872d4b24c2c262d1b66ecee37N.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:2004
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\d73ab09820623e593999ed632c86c5f3b44237b872d4b24c2c262d1b66ecee37N.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:4196
- - 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:4936
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 4196 -s 616
    3⤵
    - Program crash
    PID:2192

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 424 -p 4196 -ip 4196
1⤵
PID:3880

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:3880

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
82c7aa60454bc9341c3351fb21836860

SHA1
37f2aba22217cb51eed131d493215e3772a6bfff

SHA256
b63547a48890930ce03a7710f38278182bb37b3a5ff8d4d7f041b0e8bc55c033

SHA512
83ef8df40101ab42f3345c0cf936566d7abc7adb8b72af40a801c05c1b5540784f701e5fcaf24f3d5232784d351c5e5f02fa52096f96c8e995a8121870f09002

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

Filesize
128B

MD5
bf86df8c709c1e32c03c5b848a57b111

SHA1
5ccdb01e40e104bdb9c0d628287ed5a9cd8a29d5

SHA256
ccd649bf220b8d80d04acf49ccc828a27e04208fa6cf5833a77533f5ff8ac910

SHA512
c3f66a6c2efc4e5b0d18cac1737674b5a5d88f8de82baee757fd3a55b95f98554b4d22f291d7c7debf10b1d806a906450bc10a6026dfdfad023e3ef7313050d9

Download Submit
memory/4196-10-0x0000000002ED0000-0x0000000002EED000-memory.dmp

Filesize
116KB

Download
memory/4196-7-0x0000000002ED0000-0x0000000002EED000-memory.dmp

Filesize
116KB

Download
memory/4196-6-0x0000000010000000-0x000000001001C000-memory.dmp

Filesize
112KB

Download
memory/4196-14-0x0000000002ED0000-0x0000000002EED000-memory.dmp

Filesize
116KB

Download
memory/4196-18-0x0000000002ED0000-0x0000000002EED000-memory.dmp

Filesize
116KB

Download
memory/4196-34-0x0000000043E50000-0x0000000043E77000-memory.dmp

Filesize
156KB

Download
memory/4196-15-0x0000000002ED0000-0x0000000002EED000-memory.dmp

Filesize
116KB

Download
memory/4196-13-0x0000000002ED0000-0x0000000002EED000-memory.dmp

Filesize
116KB

Download
memory/4196-5-0x0000000010000000-0x000000001001C000-memory.dmp

Filesize
112KB

Download
memory/4196-31-0x0000000010000000-0x000000001001C000-memory.dmp

Filesize
112KB

Download
memory/4936-11-0x0000000000E00000-0x0000000000E27000-memory.dmp

Filesize
156KB

Download
memory/4936-24-0x0000000002C70000-0x0000000002C8D000-memory.dmp

Filesize
116KB

Download
memory/4936-25-0x0000000002C70000-0x0000000002C8D000-memory.dmp

Filesize
116KB

Download
memory/4936-29-0x0000000002C70000-0x0000000002C8D000-memory.dmp

Filesize
116KB

Download
memory/4936-30-0x0000000002C70000-0x0000000002C8D000-memory.dmp

Filesize
116KB

Download
memory/4936-28-0x0000000002C70000-0x0000000002C8D000-memory.dmp

Filesize
116KB

Download
memory/4936-27-0x0000000002C70000-0x0000000002C8D000-memory.dmp

Filesize
116KB

Download
memory/4936-16-0x0000000000860000-0x0000000000883000-memory.dmp

Filesize
140KB

Download
memory/4936-17-0x0000000000E00000-0x0000000000E27000-memory.dmp

Filesize
156KB

Download
memory/4936-35-0x0000000000E00000-0x0000000000E27000-memory.dmp

Filesize
156KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads