gh0strat | a22b75fa068f4c1267338be452e63ceeeb5c147a48782f0ba9f95d97ce85788b

General

Target

a22b75fa068f4c1267338be452e63ceeeb5c147a48782f0ba9f95d97ce85788b.dll
Size

137KB
MD5

112cf157189c381867bd38ff908e2ceb
SHA1

b275452d72d1dc8da315085f406ecab8ac819dd8
SHA256

a22b75fa068f4c1267338be452e63ceeeb5c147a48782f0ba9f95d97ce85788b
SHA512

c95e5e6f7ec484d74c92682ef05f2d1fe9f990a5988736884596f28fc57941983dc50c1af99a020fa29006d2ddd82b98c70864d43676fc28a833c8269b9540b9
SSDEEP

3072:SR02WMK8RJGInTlhnaBanONVk40rpg4yeF/TyUGSK9FrafcUksPxx6iTUuF:325GgFny61mraf

Score

10^/10

Malware Config

Signatures

Gh0st RAT payload 3 IoCs

resource	yara_rule
behavioral2/memory/2268-6-0x0000000010000000-0x000000001001C000-memory.dmp	family_gh0strat
behavioral2/memory/2268-5-0x0000000010000000-0x000000001001C000-memory.dmp	family_gh0strat
behavioral2/memory/2268-34-0x0000000010000000-0x000000001001C000-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
9	2268	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\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\Ports	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\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\WSD Port\Adapters\IPP	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\Appmon\Ports	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\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\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

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"	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.

resource	yara_rule
behavioral2/memory/2268-6-0x0000000010000000-0x000000001001C000-memory.dmp	acprotect
behavioral2/memory/2268-5-0x0000000010000000-0x000000001001C000-memory.dmp	acprotect
behavioral2/memory/2268-7-0x0000000002520000-0x000000000253D000-memory.dmp	acprotect
behavioral2/memory/2268-10-0x0000000002520000-0x000000000253D000-memory.dmp	acprotect
behavioral2/memory/2268-14-0x0000000002520000-0x000000000253D000-memory.dmp	acprotect
behavioral2/memory/2268-13-0x0000000002520000-0x000000000253D000-memory.dmp	acprotect
behavioral2/memory/2268-12-0x0000000002520000-0x000000000253D000-memory.dmp	acprotect
behavioral2/memory/2268-18-0x0000000002520000-0x000000000253D000-memory.dmp	acprotect
behavioral2/memory/2476-24-0x0000000002EC0000-0x0000000002EDD000-memory.dmp	acprotect
behavioral2/memory/2476-29-0x0000000002EC0000-0x0000000002EDD000-memory.dmp	acprotect
behavioral2/memory/2476-30-0x0000000002EC0000-0x0000000002EDD000-memory.dmp	acprotect
behavioral2/memory/2476-28-0x0000000002EC0000-0x0000000002EDD000-memory.dmp	acprotect
behavioral2/memory/2476-27-0x0000000002EC0000-0x0000000002EDD000-memory.dmp	acprotect
behavioral2/memory/2476-25-0x0000000002EC0000-0x0000000002EDD000-memory.dmp	acprotect
behavioral2/memory/2268-34-0x0000000010000000-0x000000001001C000-memory.dmp	acprotect

Drops file in System32 directory 6 IoCs

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

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2268 set thread context of 2476	2268	rundll32.exe	86

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
2912	2268	WerFault.exe	83

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&000001	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\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_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 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

Modifies data under HKEY_USERS 22 IoCs

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\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\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\Fax = "winspool,Ne02:,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\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-1-5-19\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\Send To OneNote 2016 = "winspool,nul:"	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
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-1-5-19\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-1-5-20\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\Devices\Fax = "winspool,Ne02:"	Spoolsv.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows NT\CurrentVersion\Devices	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

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	2268	rundll32.exe
Token: SeDebugPrivilege	2476	svchost.exe
Token: SeDebugPrivilege	2268	rundll32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 2720 wrote to memory of 2268	2720	rundll32.exe	83
PID 2720 wrote to memory of 2268	2720	rundll32.exe	83
PID 2720 wrote to memory of 2268	2720	rundll32.exe	83
PID 2268 wrote to memory of 2476	2268	rundll32.exe	86
PID 2268 wrote to memory of 2476	2268	rundll32.exe	86
PID 2268 wrote to memory of 2476	2268	rundll32.exe	86
PID 2268 wrote to memory of 2476	2268	rundll32.exe	86

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\a22b75fa068f4c1267338be452e63ceeeb5c147a48782f0ba9f95d97ce85788b.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:2720
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\a22b75fa068f4c1267338be452e63ceeeb5c147a48782f0ba9f95d97ce85788b.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:2268
- - 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:2476
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 2268 -s 616
    3⤵
    - Program crash
    PID:2912

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 2268 -ip 2268
1⤵
PID:4268

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:4504

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

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Downloads

C:\Windows\AppPatch\ComBack.Dll

Filesize
137KB

MD5
8ca5f8be58313bb74d73bca64838b0f7

SHA1
d0221dddc7cb84fed9330badaa4076fa8e679da2

SHA256
16afb7b03ce482f8df62d47f33e1abe8e13fd35f1d5cab58e2130cacde9126dc

SHA512
23f96ac19dad54cf4526771d41995d43ece7b252e2578607bd026ecaa6dd777a75cc5888337fdf6aa7cbbe8b751ec2353e6b73354bd9eabdd09d1662034c978a

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

Filesize
128B

MD5
f85ccc7673d13b9342607a6ea03399b7

SHA1
f37681f8a3b78641d014c0ecc96127023835a2b7

SHA256
2cb2bb2aed3463bf6d1210a3a94f7b5798f4c044102c74c4bfa16a1abcf4b6d7

SHA512
7797606ef966e20dfe7f70eed224a3320df582abe75922cd530d15c0e739a42279ac512226d1a21365911fd52ad5966d382d592db41391b5ebc5c13119dbe678

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

Filesize
247B

MD5
0487fd8c5e50d26b79dd3f113523f22f

SHA1
9e96cc06149c61531a6cd26f4cebabf1cbb5678c

SHA256
7ad13d20a28b45661e5f7ef6bc331927fb8866fce7f911151dcfa69a5ad76a4f

SHA512
56b0d2b2d2a65a80498e8cd9c52e8c53029a59f17c560b54b7ab05038b12e70b8dcd4557c93a0e8a2420c414e12ee89ffdf1a5d8125810c635d74c8124d4bbc0

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

Filesize
290B

MD5
60818008f5c1dd8342d4546b356ffbe7

SHA1
ecd0ce3d8fde7bd1ed49f3abffb7913bd6ad3799

SHA256
ac89f4ee66dabca7fec2d8549eea771e52e396b4ebafc6c63257822e2569929e

SHA512
51fd17556f4fe7ad406ab92cc4b1ca1ae1b92725ae5606bebaa0ce906f10ae8074f02047409e0bba920210b03170aff82d0609b5d68beef3078a6f758558d16f

Download Submit
memory/2268-12-0x0000000002520000-0x000000000253D000-memory.dmp

Filesize
116KB

Download
memory/2268-7-0x0000000002520000-0x000000000253D000-memory.dmp

Filesize
116KB

Download
memory/2268-6-0x0000000010000000-0x000000001001C000-memory.dmp

Filesize
112KB

Download
memory/2268-18-0x0000000002520000-0x000000000253D000-memory.dmp

Filesize
116KB

Download
memory/2268-5-0x0000000010000000-0x000000001001C000-memory.dmp

Filesize
112KB

Download
memory/2268-34-0x0000000010000000-0x000000001001C000-memory.dmp

Filesize
112KB

Download
memory/2268-37-0x0000000043E50000-0x0000000043E77000-memory.dmp

Filesize
156KB

Download
memory/2268-14-0x0000000002520000-0x000000000253D000-memory.dmp

Filesize
116KB

Download
memory/2268-10-0x0000000002520000-0x000000000253D000-memory.dmp

Filesize
116KB

Download
memory/2268-13-0x0000000002520000-0x000000000253D000-memory.dmp

Filesize
116KB

Download
memory/2476-24-0x0000000002EC0000-0x0000000002EDD000-memory.dmp

Filesize
116KB

Download
memory/2476-30-0x0000000002EC0000-0x0000000002EDD000-memory.dmp

Filesize
116KB

Download
memory/2476-28-0x0000000002EC0000-0x0000000002EDD000-memory.dmp

Filesize
116KB

Download
memory/2476-27-0x0000000002EC0000-0x0000000002EDD000-memory.dmp

Filesize
116KB

Download
memory/2476-25-0x0000000002EC0000-0x0000000002EDD000-memory.dmp

Filesize
116KB

Download
memory/2476-29-0x0000000002EC0000-0x0000000002EDD000-memory.dmp

Filesize
116KB

Download
memory/2476-15-0x0000000000B90000-0x0000000000BB7000-memory.dmp

Filesize
156KB

Download
memory/2476-16-0x0000000000AA0000-0x0000000000AC3000-memory.dmp

Filesize
140KB

Download
memory/2476-38-0x0000000000B90000-0x0000000000BB7000-memory.dmp

Filesize
156KB

Download
memory/2476-17-0x0000000000B90000-0x0000000000BB7000-memory.dmp

Filesize
156KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads