gh0strat | d842d4f3145ecf815885d17f5e75df8cb62fc38a2109152127eef0ba552e2f4a

General

Target

d842d4f3145ecf815885d17f5e75df8cb62fc38a2109152127eef0ba552e2f4aN.dll
Size

137KB
MD5

f324ca57a38366d055870dcbc8b33650
SHA1

1d823c7211db73168a309b4ffa7705c2598cee0d
SHA256

d842d4f3145ecf815885d17f5e75df8cb62fc38a2109152127eef0ba552e2f4a
SHA512

26c3e3a524ee15b4c73baf6a0ad8f57413ab76edcd4132b9ca1222615a9cb94c64489f6efb2955340a0f87371bcb098e618f96357ce2b103b0adac526cef7a52
SSDEEP

3072:VR02WMK8RJGInTlhnaBanONVk40rpg4yeF/TyUGSK9FrafcUksPxx6iTUum:425GgFny61mras

Score

10^/10

gh0strat discovery persistence rat

Malware Config

Signatures

Gh0st RAT payload 4 IoCs

Processes:

resource	yara_rule
behavioral2/memory/3536-5-0x0000000010000000-0x000000001001C000-memory.dmp	family_gh0strat
behavioral2/memory/3536-4-0x0000000010000000-0x000000001001C000-memory.dmp	family_gh0strat
behavioral2/memory/3536-6-0x0000000010000000-0x000000001001C000-memory.dmp	family_gh0strat
behavioral2/memory/3536-32-0x0000000010000000-0x000000001001C000-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

Processes:

rundll32.exe

flow pid process

7 3536 rundll32.exe

flow	pid	process
7	3536	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	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\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\USB Monitor	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	svchost.exe
Key created	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\Print\Monitors\Appmon\Ports	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\IPP	Spoolsv.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\WSD Port	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\Local Port	Spoolsv.exe

Sets service image path in registry 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

rundll32.exesvchost.exe

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 16 IoCs

Detects file using ACProtect software.

Processes:

resource	yara_rule
behavioral2/memory/3536-5-0x0000000010000000-0x000000001001C000-memory.dmp	acprotect
behavioral2/memory/3536-4-0x0000000010000000-0x000000001001C000-memory.dmp	acprotect
behavioral2/memory/3536-6-0x0000000010000000-0x000000001001C000-memory.dmp	acprotect
behavioral2/memory/3536-10-0x0000000002400000-0x000000000241D000-memory.dmp	acprotect
behavioral2/memory/3536-7-0x0000000002400000-0x000000000241D000-memory.dmp	acprotect
behavioral2/memory/3536-18-0x0000000002400000-0x000000000241D000-memory.dmp	acprotect
behavioral2/memory/3536-15-0x0000000002400000-0x000000000241D000-memory.dmp	acprotect
behavioral2/memory/3536-14-0x0000000002400000-0x000000000241D000-memory.dmp	acprotect
behavioral2/memory/3536-13-0x0000000002400000-0x000000000241D000-memory.dmp	acprotect
behavioral2/memory/4300-25-0x0000000002F90000-0x0000000002FAD000-memory.dmp	acprotect
behavioral2/memory/4300-24-0x0000000002F90000-0x0000000002FAD000-memory.dmp	acprotect
behavioral2/memory/4300-28-0x0000000002F90000-0x0000000002FAD000-memory.dmp	acprotect
behavioral2/memory/4300-30-0x0000000002F90000-0x0000000002FAD000-memory.dmp	acprotect
behavioral2/memory/4300-27-0x0000000002F90000-0x0000000002FAD000-memory.dmp	acprotect
behavioral2/memory/4300-29-0x0000000002F90000-0x0000000002FAD000-memory.dmp	acprotect
behavioral2/memory/3536-32-0x0000000010000000-0x000000001001C000-memory.dmp	acprotect

Drops file in System32 directory 6 IoCs

Processes:

rundll32.exesvchost.exe

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

Processes:

rundll32.exe

description pid process target process

PID 3536 set thread context of 4300 3536 rundll32.exe svchost.exe

description	pid	process	target process
PID 3536 set thread context of 4300	3536	rundll32.exe	svchost.exe

Drops file in Windows directory 4 IoCs

Processes:

rundll32.exe

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

Program crash 1 IoCs

Processes:

WerFault.exe

pid pid_target process target process

1728 3536 WerFault.exe rundll32.exe

pid	pid_target	process	target process
1728	3536	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\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 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_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\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\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
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&000001	Spoolsv.exe

Modifies data under HKEY_USERS 22 IoCs

Processes:

Spoolsv.exe

description	ioc	process
Key created	\REGISTRY\USER\S-1-5-20\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\Devices\Microsoft XPS Document Writer = "winspool,Ne00:"	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\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
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\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
Key created	\REGISTRY\USER\S-1-5-19\Software\Microsoft\Windows NT\CurrentVersion\Devices	Spoolsv.exe
Key created	\REGISTRY\USER\S-1-5-19\Software\Microsoft\Windows NT\CurrentVersion\PrinterPorts	Spoolsv.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows NT\CurrentVersion\Devices	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\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-1-5-19\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\Devices\Microsoft XPS Document Writer = "winspool,Ne00:"	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\Devices\Send To OneNote 2016 = "winspool,nul:"	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
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

Processes:

rundll32.exesvchost.exe

description pid process

Token: SeDebugPrivilege 3536 rundll32.exe
Token: SeDebugPrivilege 4300 svchost.exe

description	pid	process
Token: SeDebugPrivilege	3536	rundll32.exe
Token: SeDebugPrivilege	4300	svchost.exe

Suspicious use of WriteProcessMemory 7 IoCs

Processes:

rundll32.exerundll32.exe

description	pid	process	target process
PID 1656 wrote to memory of 3536	1656	rundll32.exe	rundll32.exe
PID 1656 wrote to memory of 3536	1656	rundll32.exe	rundll32.exe
PID 1656 wrote to memory of 3536	1656	rundll32.exe	rundll32.exe
PID 3536 wrote to memory of 4300	3536	rundll32.exe	svchost.exe
PID 3536 wrote to memory of 4300	3536	rundll32.exe	svchost.exe
PID 3536 wrote to memory of 4300	3536	rundll32.exe	svchost.exe
PID 3536 wrote to memory of 4300	3536	rundll32.exe	svchost.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\d842d4f3145ecf815885d17f5e75df8cb62fc38a2109152127eef0ba552e2f4aN.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:1656
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\d842d4f3145ecf815885d17f5e75df8cb62fc38a2109152127eef0ba552e2f4aN.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:3536
- - 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:4300
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 3536 -s 624
    3⤵
    - Program crash
    PID:1728

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 3536 -ip 3536
1⤵
PID:3624

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:1188

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
c7c0042a142f21554755a29e795a3ad8

SHA1
665e3a2cad408644ad73c5700cfce1f00039b3c3

SHA256
b0e240beaf095318b22ac40ccf30076191795df0a1caeb998cb2ff181827aabc

SHA512
5383f9745a814b3870925fd705d6c9e58feed6b5d21b2df3faf7f3349e6c7ea7cdbd62f9c57f5c70353f7ce31ca8cf2f5a43944905ce1ccaf10b6add6974ae2b

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

Filesize
69B

MD5
05dc8344429b41d7a3dca4db58793a5e

SHA1
71311c3cfdf2f3b059da454ae2921b5c2deb6eaf

SHA256
6730413261dfe49192af1d77067d3654ec18aa72b56190af932f843b742c0385

SHA512
88ce284cdc858e3a6a186d665ef7abf90412fd389f49c4809b45e7502cd0435a32fc6eeefae8b94b6b25a9dc2ddd2d71247b776f1cf8945a032dfa4b17cc6136

Download Submit
memory/3536-34-0x0000000043E50000-0x0000000043E77000-memory.dmp

Filesize
156KB

Download
memory/3536-10-0x0000000002400000-0x000000000241D000-memory.dmp

Filesize
116KB

Download
memory/3536-7-0x0000000002400000-0x000000000241D000-memory.dmp

Filesize
116KB

Download
memory/3536-5-0x0000000010000000-0x000000001001C000-memory.dmp

Filesize
112KB

Download
memory/3536-6-0x0000000010000000-0x000000001001C000-memory.dmp

Filesize
112KB

Download
memory/3536-18-0x0000000002400000-0x000000000241D000-memory.dmp

Filesize
116KB

Download
memory/3536-32-0x0000000010000000-0x000000001001C000-memory.dmp

Filesize
112KB

Download
memory/3536-15-0x0000000002400000-0x000000000241D000-memory.dmp

Filesize
116KB

Download
memory/3536-14-0x0000000002400000-0x000000000241D000-memory.dmp

Filesize
116KB

Download
memory/3536-13-0x0000000002400000-0x000000000241D000-memory.dmp

Filesize
116KB

Download
memory/3536-4-0x0000000010000000-0x000000001001C000-memory.dmp

Filesize
112KB

Download
memory/4300-11-0x0000000000D20000-0x0000000000D47000-memory.dmp

Filesize
156KB

Download
memory/4300-25-0x0000000002F90000-0x0000000002FAD000-memory.dmp

Filesize
116KB

Download
memory/4300-24-0x0000000002F90000-0x0000000002FAD000-memory.dmp

Filesize
116KB

Download
memory/4300-28-0x0000000002F90000-0x0000000002FAD000-memory.dmp

Filesize
116KB

Download
memory/4300-30-0x0000000002F90000-0x0000000002FAD000-memory.dmp

Filesize
116KB

Download
memory/4300-27-0x0000000002F90000-0x0000000002FAD000-memory.dmp

Filesize
116KB

Download
memory/4300-29-0x0000000002F90000-0x0000000002FAD000-memory.dmp

Filesize
116KB

Download
memory/4300-16-0x0000000000970000-0x0000000000993000-memory.dmp

Filesize
140KB

Download
memory/4300-17-0x0000000000D20000-0x0000000000D47000-memory.dmp

Filesize
156KB

Download
memory/4300-35-0x0000000000D20000-0x0000000000D47000-memory.dmp

Filesize
156KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads