gh0strat | 70c7339ea2fe122044db3a7a5e68a91404181c812558d626078c5f80810b999e

General

Target

70c7339ea2fe122044db3a7a5e68a91404181c812558d626078c5f80810b999e.exe
Size

112KB
MD5

5ad597debc3825883758cb4771dde705
SHA1

3ca5c9f6ba65a02dc99bfa677706f695772f49b7
SHA256

70c7339ea2fe122044db3a7a5e68a91404181c812558d626078c5f80810b999e
SHA512

ed3f6bbb5b4c0e79926e987d4ebcbbc7adcbe4833000bc607a210e5883e1e915b909fb0695fba9dcc762c4807dac7cc4adff75b423e8646467aea7f8a12dcabb
SSDEEP

1536:vqEA70HzLJksPEOajozLElnqiO2Z+dJ/tHi:vXTLJkQ7zAV3ZUtC

Score

10^/10

gh0strat discovery persistence rat

Malware Config

Extracted

Family

gh0strat

C2

fwq.kuai-go.com

Signatures

Gh0st RAT payload 1 IoCs

resource	yara_rule
behavioral2/files/0x000a000000023c4e-1.dat	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

Server Software Component: Terminal Services DLL 1 TTPs 1 IoCs

persistence

Terminal Services DLL

T1505.005

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\dmw\Parameters\ServiceDll = "C:\\ProgramData\\240633500.dll"	70c7339ea2fe122044db3a7a5e68a91404181c812558d626078c5f80810b999e.exe

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-3227495264-2217614367-4027411560-1000\Control Panel\International\Geo\Nation	70c7339ea2fe122044db3a7a5e68a91404181c812558d626078c5f80810b999e.exe

Executes dropped EXE 1 IoCs

pid	Process
2304	dmw.exe

Loads dropped DLL 3 IoCs

pid	Process
2748	70c7339ea2fe122044db3a7a5e68a91404181c812558d626078c5f80810b999e.exe
3508	svchost.exe
2304	dmw.exe

Creates a Windows Service
persistence

Drops file in System32 directory 2 IoCs

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

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 5 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	dmw.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	70c7339ea2fe122044db3a7a5e68a91404181c812558d626078c5f80810b999e.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	PING.EXE

System Network Configuration Discovery: Internet Connection Discovery 1 TTPs 2 IoCs

Adversaries may check for Internet connectivity on compromised systems.

discovery

Internet Connection Discovery

T1016.001

pid	Process
3896	cmd.exe
4972	PING.EXE

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
4972	PING.EXE

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
2748	70c7339ea2fe122044db3a7a5e68a91404181c812558d626078c5f80810b999e.exe
2748	70c7339ea2fe122044db3a7a5e68a91404181c812558d626078c5f80810b999e.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeIncBasePriorityPrivilege	2748	70c7339ea2fe122044db3a7a5e68a91404181c812558d626078c5f80810b999e.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2748	70c7339ea2fe122044db3a7a5e68a91404181c812558d626078c5f80810b999e.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 2748 wrote to memory of 3896	2748	70c7339ea2fe122044db3a7a5e68a91404181c812558d626078c5f80810b999e.exe	84
PID 2748 wrote to memory of 3896	2748	70c7339ea2fe122044db3a7a5e68a91404181c812558d626078c5f80810b999e.exe	84
PID 2748 wrote to memory of 3896	2748	70c7339ea2fe122044db3a7a5e68a91404181c812558d626078c5f80810b999e.exe	84
PID 3896 wrote to memory of 4972	3896	cmd.exe	86
PID 3896 wrote to memory of 4972	3896	cmd.exe	86
PID 3896 wrote to memory of 4972	3896	cmd.exe	86
PID 3508 wrote to memory of 2304	3508	svchost.exe	87
PID 3508 wrote to memory of 2304	3508	svchost.exe	87
PID 3508 wrote to memory of 2304	3508	svchost.exe	87

C:\Users\Admin\AppData\Local\Temp\70c7339ea2fe122044db3a7a5e68a91404181c812558d626078c5f80810b999e.exe
"C:\Users\Admin\AppData\Local\Temp\70c7339ea2fe122044db3a7a5e68a91404181c812558d626078c5f80810b999e.exe"
1⤵
- Server Software Component: Terminal Services DLL
- Checks computer location settings
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2748
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c ping 127.0.0.1 -n 1 && del /f/q "C:\Users\Admin\AppData\Local\Temp\70c7339ea2fe122044db3a7a5e68a91404181c812558d626078c5f80810b999e.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - System Network Configuration Discovery: Internet Connection Discovery
  - Suspicious use of WriteProcessMemory
  PID:3896
- - C:\Windows\SysWOW64\PING.EXE
    ping 127.0.0.1 -n 1
    3⤵
    - System Location Discovery: System Language Discovery
    - System Network Configuration Discovery: Internet Connection Discovery
    - Runs ping.exe
    PID:4972

C:\Windows\SysWOW64\svchost.exe
C:\Windows\SysWOW64\svchost.exe -k "dmw"
1⤵
PID:3924

C:\Windows\SysWOW64\svchost.exe
C:\Windows\SysWOW64\svchost.exe -k "dmw"
1⤵
- Loads dropped DLL
- Drops file in System32 directory
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3508
- C:\Windows\SysWOW64\dmw.exe
  C:\Windows\system32\dmw.exe "c:\programdata\240633500.dll",MainThread
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - System Location Discovery: System Language Discovery
  PID:2304

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Server Software Component

1

T1505

Terminal Services DLL

1

T1505.005

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

1

T1012

Remote System Discovery

1

T1018

System Information Discovery

2

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

System Network Configuration Discovery

1

T1016

Internet Connection Discovery

1

T1016.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\ProgramData\240633500.dll

Filesize
37KB

MD5
07c9f184d5cf6709a94807845c7ab382

SHA1
280c71e47ffdf5584cdde0542ef63dba725bf66f

SHA256
57ab6db208a1f1431eec74ca7ee5098ca6173850973f88a3f50a1d55d99b1f52

SHA512
a7f3250f20c4fd523ebac921a99d675ecdebed962f0440ad813391dd6a7ba0d98e02427aa94f450be76c470ebb1ae51bd85fbbb19d74a9fb34de33524298408d

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C:\Windows\SysWOW64\dmw.exe

Filesize
60KB

MD5
889b99c52a60dd49227c5e485a016679

SHA1
8fa889e456aa646a4d0a4349977430ce5fa5e2d7

SHA256
6cbe0e1f046b13b29bfa26f8b368281d2dda7eb9b718651d5856f22cc3e02910

SHA512
08933106eaf338dd119c45cbf1f83e723aff77cc0f8d3fc84e36253b1eb31557a54211d1d5d1cb58958188e32064d451f6c66a24b3963cccd3de07299ab90641

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Analysis

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