gh0strat | 76b91dcb96aed36e9e39a3b9692542c77176c835a278b20f13248d063929db36

General

Target

76b91dcb96aed36e9e39a3b9692542c77176c835a278b20f13248d063929db36.dll
Size

137KB
MD5

69a254a009f9a1aab272715e4c2f30e1
SHA1

bc27fc0cbb37722570c3d571b3b8e9a82538bd21
SHA256

76b91dcb96aed36e9e39a3b9692542c77176c835a278b20f13248d063929db36
SHA512

1bf02691aaa19d72c56a8c435316eaee1095f0af980a154f0f1afa3ab1227268145e301354d0dce85c6ad0ddc11db3befcd76e1630fa462ffd5a353ba1ef4db5
SSDEEP

3072:9R02WMK8RJGInTlhnaBanONVk40rpg4yeF/TyUGSK9FrafcUksPxx6iTUuM:Q25GgFny61mrai

Score

10^/10

Malware Config

Signatures

Gh0st RAT payload 4 IoCs

resource	yara_rule
behavioral2/memory/4920-7-0x0000000010000000-0x000000001001C000-memory.dmp	family_gh0strat
behavioral2/memory/4920-5-0x0000000010000000-0x000000001001C000-memory.dmp	family_gh0strat
behavioral2/memory/4920-35-0x0000000010000000-0x000000001001C000-memory.dmp	family_gh0strat
behavioral2/memory/1444-37-0x0000000010000000-0x000000001001C000-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

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\Standard TCP/IP Port	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\Adapters\IPP	Spoolsv.exe
Key created	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\Print\Monitors\WSD Port\Adapters\WSPrint\OfflinePorts	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\Appmon\Ports	Spoolsv.exe
Key created	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\Print\Monitors\SCSI Port Monitor	rundll32.exe
Key created	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\Print\Monitors\SCSI Port Monitor	svchost.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\Appmon	Spoolsv.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	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	Spoolsv.exe
Key created	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\Print\Monitors\Microsoft Shared Fax Monitor	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 17 IoCs

Detects file using ACProtect software.

resource	yara_rule
behavioral2/memory/4920-7-0x0000000010000000-0x000000001001C000-memory.dmp	acprotect
behavioral2/memory/4920-6-0x00000000024D0000-0x00000000024ED000-memory.dmp	acprotect
behavioral2/memory/4920-13-0x00000000024D0000-0x00000000024ED000-memory.dmp	acprotect
behavioral2/memory/4920-10-0x00000000024D0000-0x00000000024ED000-memory.dmp	acprotect
behavioral2/memory/4920-5-0x0000000010000000-0x000000001001C000-memory.dmp	acprotect
behavioral2/memory/4920-14-0x00000000024D0000-0x00000000024ED000-memory.dmp	acprotect
behavioral2/memory/4920-12-0x00000000024D0000-0x00000000024ED000-memory.dmp	acprotect
behavioral2/memory/4920-15-0x00000000024D0000-0x00000000024ED000-memory.dmp	acprotect
behavioral2/memory/1444-24-0x0000000000F20000-0x0000000000F3D000-memory.dmp	acprotect
behavioral2/memory/1444-25-0x0000000000F20000-0x0000000000F3D000-memory.dmp	acprotect
behavioral2/memory/1444-28-0x0000000000F20000-0x0000000000F3D000-memory.dmp	acprotect
behavioral2/memory/1444-30-0x0000000000F20000-0x0000000000F3D000-memory.dmp	acprotect
behavioral2/memory/1444-27-0x0000000000F20000-0x0000000000F3D000-memory.dmp	acprotect
behavioral2/memory/1444-29-0x0000000000F20000-0x0000000000F3D000-memory.dmp	acprotect
behavioral2/memory/4920-31-0x00000000024D0000-0x00000000024ED000-memory.dmp	acprotect
behavioral2/memory/4920-35-0x0000000010000000-0x000000001001C000-memory.dmp	acprotect
behavioral2/memory/1444-37-0x0000000010000000-0x000000001001C000-memory.dmp	acprotect

Drops file in System32 directory 6 IoCs

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

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4920 set thread context of 1444	4920	rundll32.exe	88

Drops file in Windows directory 4 IoCs

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

pid	pid_target	Process	procid_target
2976	4920	WerFault.exe	84

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\Disk&Ven_WDC&Prod_WDS100T2B0A\4&215468a5&0&000000\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\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 opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\CdRom&Ven_QEMU&Prod_QEMU_DVD-ROM\4&215468a5&0&010000	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\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&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\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

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
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-1-5-20\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\Send To OneNote 2016 = "winspool,nul:,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-1-5-20\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\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\Fax = "winspool,Ne02:"	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\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-1-5-19\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 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\Microsoft Print to PDF = "winspool,Ne01:"	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\PrinterPorts\Fax = "winspool,Ne02:,15,45"	Spoolsv.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	4920	rundll32.exe
Token: SeDebugPrivilege	1444	svchost.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 1840 wrote to memory of 4920	1840	rundll32.exe	84
PID 1840 wrote to memory of 4920	1840	rundll32.exe	84
PID 1840 wrote to memory of 4920	1840	rundll32.exe	84
PID 4920 wrote to memory of 1444	4920	rundll32.exe	88
PID 4920 wrote to memory of 1444	4920	rundll32.exe	88
PID 4920 wrote to memory of 1444	4920	rundll32.exe	88
PID 4920 wrote to memory of 1444	4920	rundll32.exe	88

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\76b91dcb96aed36e9e39a3b9692542c77176c835a278b20f13248d063929db36.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:1840
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\76b91dcb96aed36e9e39a3b9692542c77176c835a278b20f13248d063929db36.dll,#1
  2⤵
  - 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:4920
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 4920 -s 616
    3⤵
    - Program crash
    PID:2976
- - 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:1444

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 4920 -ip 4920
1⤵
PID:3364

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:1160

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
1ce570a3f8b563aa51abec81fb1e7bea

SHA1
ec3d0192e297ae1529aff8dd5d8addd833386ff9

SHA256
615f4b6e77cc43dd3a410dbfbf871dbdeeb6a4261f349e342db31556bcf71db7

SHA512
719447ec95b9d47b1fb40617a6f4b922519128679265ff7c08ab2d851efda83064225217bc5b20a3f15ba8438a7c17dbda8f16160bd8ec1f32cb80d3a6b8f5a9

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

Filesize
128B

MD5
f9a0f975d7134a517ddd512b71db3aa3

SHA1
67f64b792a2fddf64a4d45c9d3360fa78eb640fc

SHA256
82987d5a98d7636a58c96ef23284496e815e8b4cbba23193c355d47ddc04d598

SHA512
1b18f5903cee2f316d2593b7364c4fa48384294c08a150c0e5eebc8940bf40e64da5fb7ec67dc4e560dad6e6b1e6192a7002e371992154034a3eca1f4f9c2890

Download Submit
memory/1444-17-0x0000000000780000-0x00000000007A7000-memory.dmp

Filesize
156KB

Download
memory/1444-24-0x0000000000F20000-0x0000000000F3D000-memory.dmp

Filesize
116KB

Download
memory/1444-37-0x0000000010000000-0x000000001001C000-memory.dmp

Filesize
112KB

Download
memory/1444-36-0x0000000000780000-0x00000000007A7000-memory.dmp

Filesize
156KB

Download
memory/1444-29-0x0000000000F20000-0x0000000000F3D000-memory.dmp

Filesize
116KB

Download
memory/1444-27-0x0000000000F20000-0x0000000000F3D000-memory.dmp

Filesize
116KB

Download
memory/1444-18-0x0000000000780000-0x00000000007A7000-memory.dmp

Filesize
156KB

Download
memory/1444-16-0x0000000000600000-0x0000000000623000-memory.dmp

Filesize
140KB

Download
memory/1444-30-0x0000000000F20000-0x0000000000F3D000-memory.dmp

Filesize
116KB

Download
memory/1444-25-0x0000000000F20000-0x0000000000F3D000-memory.dmp

Filesize
116KB

Download
memory/1444-28-0x0000000000F20000-0x0000000000F3D000-memory.dmp

Filesize
116KB

Download
memory/4920-6-0x00000000024D0000-0x00000000024ED000-memory.dmp

Filesize
116KB

Download
memory/4920-13-0x00000000024D0000-0x00000000024ED000-memory.dmp

Filesize
116KB

Download
memory/4920-10-0x00000000024D0000-0x00000000024ED000-memory.dmp

Filesize
116KB

Download
memory/4920-15-0x00000000024D0000-0x00000000024ED000-memory.dmp

Filesize
116KB

Download
memory/4920-12-0x00000000024D0000-0x00000000024ED000-memory.dmp

Filesize
116KB

Download
memory/4920-7-0x0000000010000000-0x000000001001C000-memory.dmp

Filesize
112KB

Download
memory/4920-34-0x0000000043E50000-0x0000000043E77000-memory.dmp

Filesize
156KB

Download
memory/4920-31-0x00000000024D0000-0x00000000024ED000-memory.dmp

Filesize
116KB

Download
memory/4920-35-0x0000000010000000-0x000000001001C000-memory.dmp

Filesize
112KB

Download
memory/4920-14-0x00000000024D0000-0x00000000024ED000-memory.dmp

Filesize
116KB

Download
memory/4920-5-0x0000000010000000-0x000000001001C000-memory.dmp

Filesize
112KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads