gh0strat | fe92c6548ab93637132bc12a469eab3d36d71974f9841f9fc6f99ebac159d610

General

Target

fe92c6548ab93637132bc12a469eab3d36d71974f9841f9fc6f99ebac159d610.dll
Size

137KB
MD5

62b5d2e99d839d618e07fb00a38b314a
SHA1

c1170c5664151ba9fa8478e937d223d94008b27f
SHA256

fe92c6548ab93637132bc12a469eab3d36d71974f9841f9fc6f99ebac159d610
SHA512

ef72256784bc835fe5c39c5bacca05b849a36957095c8b1515438a87d8b8f327f74f794e57fe12adeb8fbfab7cf7498bb34a11e01bfaab7bbf767e5fa9142993
SSDEEP

3072:kR02WMK8RJGInTlhnaBanONVk40rpg4yeF/TyUGSK9FrafcUksPxx6iTUu:B25GgFny61mra

Score

10^/10

Malware Config

Signatures

Gh0st RAT payload 3 IoCs

resource	yara_rule
behavioral2/memory/1716-6-0x0000000010000000-0x000000001001C000-memory.dmp	family_gh0strat
behavioral2/memory/1716-5-0x0000000010000000-0x000000001001C000-memory.dmp	family_gh0strat
behavioral2/memory/1716-35-0x0000000010000000-0x000000001001C000-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
2	1716	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\WSD Port\Adapters\IPP	Spoolsv.exe
Set value (str)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\Print\Monitors\SCSI Port Monitor\Driver = "scsimon.dll"	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\Microsoft Shared Fax Monitor	Spoolsv.exe
Key created	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\Print\Monitors\USB Monitor	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\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\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	Spoolsv.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	Spoolsv.exe
Key created	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\Print\Monitors\Local Port	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

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/1716-6-0x0000000010000000-0x000000001001C000-memory.dmp	acprotect
behavioral2/memory/1716-5-0x0000000010000000-0x000000001001C000-memory.dmp	acprotect
behavioral2/memory/1716-13-0x00000000024C0000-0x00000000024DD000-memory.dmp	acprotect
behavioral2/memory/1716-7-0x00000000024C0000-0x00000000024DD000-memory.dmp	acprotect
behavioral2/memory/1716-10-0x00000000024C0000-0x00000000024DD000-memory.dmp	acprotect
behavioral2/memory/1716-15-0x00000000024C0000-0x00000000024DD000-memory.dmp	acprotect
behavioral2/memory/1716-14-0x00000000024C0000-0x00000000024DD000-memory.dmp	acprotect
behavioral2/memory/1716-12-0x00000000024C0000-0x00000000024DD000-memory.dmp	acprotect
behavioral2/memory/2332-29-0x0000000000FD0000-0x0000000000FED000-memory.dmp	acprotect
behavioral2/memory/2332-28-0x0000000000FD0000-0x0000000000FED000-memory.dmp	acprotect
behavioral2/memory/2332-30-0x0000000000FD0000-0x0000000000FED000-memory.dmp	acprotect
behavioral2/memory/2332-27-0x0000000000FD0000-0x0000000000FED000-memory.dmp	acprotect
behavioral2/memory/2332-25-0x0000000000FD0000-0x0000000000FED000-memory.dmp	acprotect
behavioral2/memory/2332-24-0x0000000000FD0000-0x0000000000FED000-memory.dmp	acprotect
behavioral2/memory/1716-35-0x0000000010000000-0x000000001001C000-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 1716 set thread context of 2332	1716	rundll32.exe	89

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
2044	1716	WerFault.exe	87

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 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_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\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
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&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 value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\Disk&Ven_WDC&Prod_WDS100T2B0A\4&215468a5&0&000000\HardwareID	Spoolsv.exe

Modifies data under HKEY_USERS 22 IoCs

description	ioc	Process
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-1-5-19\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\PrinterPorts\Fax = "winspool,Ne02:,15,45"	Spoolsv.exe
Key created	\REGISTRY\USER\S-1-5-19\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\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\PrinterPorts\Microsoft XPS Document Writer = "winspool,Ne00:,15,45"	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\PrinterPorts	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\Send To OneNote 2016 = "winspool,nul:"	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
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\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-1-5-20\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

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	1716	rundll32.exe
Token: SeDebugPrivilege	2332	svchost.exe
Token: SeDebugPrivilege	1716	rundll32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 1824 wrote to memory of 1716	1824	rundll32.exe	87
PID 1824 wrote to memory of 1716	1824	rundll32.exe	87
PID 1824 wrote to memory of 1716	1824	rundll32.exe	87
PID 1716 wrote to memory of 2332	1716	rundll32.exe	89
PID 1716 wrote to memory of 2332	1716	rundll32.exe	89
PID 1716 wrote to memory of 2332	1716	rundll32.exe	89
PID 1716 wrote to memory of 2332	1716	rundll32.exe	89

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\fe92c6548ab93637132bc12a469eab3d36d71974f9841f9fc6f99ebac159d610.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:1824
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\fe92c6548ab93637132bc12a469eab3d36d71974f9841f9fc6f99ebac159d610.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:1716
- - 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:2332
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 1716 -s 668
    3⤵
    - Program crash
    PID:2044

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 368 -p 1716 -ip 1716
1⤵
PID:1936

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:4728

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

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Windows\AppPatch\ComBack.Dll

Filesize
137KB

MD5
b5c1481e819de1974a31f903b9ec1441

SHA1
1abdb113f5ef35bd5b9c9e86978e7c75f459cc5f

SHA256
de832793a5b7538ab6d080edd48d0ea60af71c3a7d7d185ee6af7f9984d09f83

SHA512
df3b604b8d458dee47a1da45d08b176023ad6fe993080487d28572ee305b9919c8063c955cdc45a781780dcf87f30740599a374da18c013183a4c2547a772cd0

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

Filesize
128B

MD5
def5499bce7ee37c938c4fa40dc720a9

SHA1
78ad075873166027cb12feec85397327dd4cff7a

SHA256
cf5793eedd1439ee6d3f6c714ac78f7f31f20ffd12f56224c295a6c07167d2cd

SHA512
795d256e4e69ccbb4da133f09036a9fb8f5c77a119ef3b94772992dab1f07338e918c6afc2e917703513c545483902abd493915657752f56b9139d052143917f

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

Filesize
247B

MD5
0664ed9d2877931e65338b535ec885b2

SHA1
408fef61a9286ae90f22d3e68351b1b6e3be1c1c

SHA256
777c547f788136e7371acc86611c17c33416da86c0e644bf87703a1550369345

SHA512
5bed2e315c45a6d7ffbe1974e7cc8d42db3311c9eb97a7e8474c522c97a37287a1e21e9b9c7ddce22ffb20c283953c85f71de57511a99692a8f0f8f62cfc7c9f

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

Filesize
326B

MD5
cdb70734f0cc7dffe258e372d88cde15

SHA1
4b834c35c05da88c734f29ce174138a1ee1a5be3

SHA256
6394644ddb2e55bd4a0eea3833937bc255778b6340e603efe12e6b6b34d39cb1

SHA512
38d08a60f19db156425bec4aff3c840525984970867e784e6c729f4f061ff90848e4756c9b47092f8238094dad69107a0d5e8c8201baf6625616436832edb879

Download Submit
memory/1716-15-0x00000000024C0000-0x00000000024DD000-memory.dmp

Filesize
116KB

Download
memory/1716-13-0x00000000024C0000-0x00000000024DD000-memory.dmp

Filesize
116KB

Download
memory/1716-6-0x0000000010000000-0x000000001001C000-memory.dmp

Filesize
112KB

Download
memory/1716-5-0x0000000010000000-0x000000001001C000-memory.dmp

Filesize
112KB

Download
memory/1716-37-0x0000000043E50000-0x0000000043E77000-memory.dmp

Filesize
156KB

Download
memory/1716-14-0x00000000024C0000-0x00000000024DD000-memory.dmp

Filesize
116KB

Download
memory/1716-12-0x00000000024C0000-0x00000000024DD000-memory.dmp

Filesize
116KB

Download
memory/1716-10-0x00000000024C0000-0x00000000024DD000-memory.dmp

Filesize
116KB

Download
memory/1716-7-0x00000000024C0000-0x00000000024DD000-memory.dmp

Filesize
116KB

Download
memory/1716-35-0x0000000010000000-0x000000001001C000-memory.dmp

Filesize
112KB

Download
memory/2332-29-0x0000000000FD0000-0x0000000000FED000-memory.dmp

Filesize
116KB

Download
memory/2332-30-0x0000000000FD0000-0x0000000000FED000-memory.dmp

Filesize
116KB

Download
memory/2332-27-0x0000000000FD0000-0x0000000000FED000-memory.dmp

Filesize
116KB

Download
memory/2332-25-0x0000000000FD0000-0x0000000000FED000-memory.dmp

Filesize
116KB

Download
memory/2332-24-0x0000000000FD0000-0x0000000000FED000-memory.dmp

Filesize
116KB

Download
memory/2332-28-0x0000000000FD0000-0x0000000000FED000-memory.dmp

Filesize
116KB

Download
memory/2332-16-0x0000000000E90000-0x0000000000EB7000-memory.dmp

Filesize
156KB

Download
memory/2332-17-0x0000000000CD0000-0x0000000000CF3000-memory.dmp

Filesize
140KB

Download
memory/2332-38-0x0000000000E90000-0x0000000000EB7000-memory.dmp

Filesize
156KB

Download
memory/2332-18-0x0000000000E90000-0x0000000000EB7000-memory.dmp

Filesize
156KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads