gh0strat | c111ac8b7495e5c7bd848d5c188205adac428c873f5ad28e48eae80d7dd81f29

General

Target

b782eb18e415722aa14a0b8a51f3d6a8f108efc3b5c0f8304dafc939bf1cab1eN.exe
Size

2.7MB
MD5

32f9a017df93e4d920bc1907b2b1b62f
SHA1

cea0dda940e7a72b2dafcf938f8badc7911b21d2
SHA256

c111ac8b7495e5c7bd848d5c188205adac428c873f5ad28e48eae80d7dd81f29
SHA512

8186dcfa34f3bdf100848e0d29c4be2ba50cc2cbdc9d19a8ba47cffb7d2912a3b3ac445de9b17a454e65976bbf9cc68f0dea37b8ab1cd5599cab62a0eecd4ea6
SSDEEP

49152:/YREXSVMDi39x7kYKy2Re589Y+wejfxYD2qQfs+RiieNXsT:A2SVMD8n7kYec589YLeLxYD2qQfs+RsG

Score

10^/10

Malware Config

Signatures

Gh0st RAT payload 1 IoCs

resource	yara_rule
behavioral2/files/0x0008000000023c86-5.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\svchcst\Parameters\ServiceDll = "C:\\Windows\\system32\\240625687.bat"	look2.exe

Executes dropped EXE 3 IoCs

pid	Process
2288	look2.exe
4192	HD_b782eb18e415722aa14a0b8a51f3d6a8f108efc3b5c0f8304dafc939bf1cab1eN.exe
792	svchcst.exe

Loads dropped DLL 3 IoCs

pid	Process
2288	look2.exe
2080	svchost.exe
792	svchcst.exe

Drops file in System32 directory 4 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\svchcst.exe	svchost.exe
File opened for modification	C:\Windows\SysWOW64\svchcst.exe	svchost.exe
File created	C:\Windows\SysWOW64\240625687.bat	look2.exe
File opened for modification	C:\Windows\SysWOW64\ini.ini	look2.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	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	HD_b782eb18e415722aa14a0b8a51f3d6a8f108efc3b5c0f8304dafc939bf1cab1eN.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchcst.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	b782eb18e415722aa14a0b8a51f3d6a8f108efc3b5c0f8304dafc939bf1cab1eN.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	look2.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
4532	b782eb18e415722aa14a0b8a51f3d6a8f108efc3b5c0f8304dafc939bf1cab1eN.exe
4532	b782eb18e415722aa14a0b8a51f3d6a8f108efc3b5c0f8304dafc939bf1cab1eN.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
4532	b782eb18e415722aa14a0b8a51f3d6a8f108efc3b5c0f8304dafc939bf1cab1eN.exe
4532	b782eb18e415722aa14a0b8a51f3d6a8f108efc3b5c0f8304dafc939bf1cab1eN.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 4532 wrote to memory of 2288	4532	b782eb18e415722aa14a0b8a51f3d6a8f108efc3b5c0f8304dafc939bf1cab1eN.exe	84
PID 4532 wrote to memory of 2288	4532	b782eb18e415722aa14a0b8a51f3d6a8f108efc3b5c0f8304dafc939bf1cab1eN.exe	84
PID 4532 wrote to memory of 2288	4532	b782eb18e415722aa14a0b8a51f3d6a8f108efc3b5c0f8304dafc939bf1cab1eN.exe	84
PID 4532 wrote to memory of 4192	4532	b782eb18e415722aa14a0b8a51f3d6a8f108efc3b5c0f8304dafc939bf1cab1eN.exe	88
PID 4532 wrote to memory of 4192	4532	b782eb18e415722aa14a0b8a51f3d6a8f108efc3b5c0f8304dafc939bf1cab1eN.exe	88
PID 4532 wrote to memory of 4192	4532	b782eb18e415722aa14a0b8a51f3d6a8f108efc3b5c0f8304dafc939bf1cab1eN.exe	88
PID 2080 wrote to memory of 792	2080	svchost.exe	96
PID 2080 wrote to memory of 792	2080	svchost.exe	96
PID 2080 wrote to memory of 792	2080	svchost.exe	96

C:\Users\Admin\AppData\Local\Temp\b782eb18e415722aa14a0b8a51f3d6a8f108efc3b5c0f8304dafc939bf1cab1eN.exe
"C:\Users\Admin\AppData\Local\Temp\b782eb18e415722aa14a0b8a51f3d6a8f108efc3b5c0f8304dafc939bf1cab1eN.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4532
- C:\Users\Admin\AppData\Local\Temp\look2.exe
  C:\Users\Admin\AppData\Local\Temp\\look2.exe
  2⤵
  - Server Software Component: Terminal Services DLL
  - Executes dropped EXE
  - Loads dropped DLL
  - Drops file in System32 directory
  - System Location Discovery: System Language Discovery
  PID:2288
- C:\Users\Admin\AppData\Local\Temp\HD_b782eb18e415722aa14a0b8a51f3d6a8f108efc3b5c0f8304dafc939bf1cab1eN.exe
  C:\Users\Admin\AppData\Local\Temp\HD_b782eb18e415722aa14a0b8a51f3d6a8f108efc3b5c0f8304dafc939bf1cab1eN.exe
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  PID:4192

C:\Windows\SysWOW64\svchost.exe
C:\Windows\SysWOW64\svchost.exe -k "svchcst"
1⤵
PID:1932

C:\Windows\SysWOW64\svchost.exe
C:\Windows\SysWOW64\svchost.exe -k "svchcst"
1⤵
- Loads dropped DLL
- Drops file in System32 directory
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2080
- C:\Windows\SysWOW64\svchcst.exe
  C:\Windows\system32\svchcst.exe "c:\windows\system32\240625687.bat",MainThread
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - System Location Discovery: System Language Discovery
  PID:792

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

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:\Users\Admin\AppData\Local\Temp\HD_b782eb18e415722aa14a0b8a51f3d6a8f108efc3b5c0f8304dafc939bf1cab1eN.exe

Filesize
1.4MB

MD5
7cc6e95a8597b92f87b199597b2501e5

SHA1
4c73f58b8e163c8f207cc84e7ce50723b65f8bd7

SHA256
d339380d8915f5a3a2f57a255d0555135e80e014c87c0201227aaa4f81142ebb

SHA512
d39deb609883fb2316234837c17dae9e73cd99dd6373348f2bbb591540a54bfde2bd28bb05d1c31de40a31fbf4122edf757a8a14bcca2011856d612e1e8a684f

Download Submit
C:\Users\Admin\AppData\Local\Temp\look2.exe

Filesize
337KB

MD5
2f3b6f16e33e28ad75f3fdaef2567807

SHA1
85e907340faf1edfc9210db85a04abd43d21b741

SHA256
86492ebf2d6f471a5ee92977318d099b3ea86175b5b7ae522237ae01d07a4857

SHA512
db17e99e2df918cfc9ccbe934adfe73f0777ce1ce9f28b57a4b24ecd821efe2e0b976a634853247b77b16627d2bb3af4ba20306059d1d25ef38ffada7da3e3a4

Download Submit
C:\Windows\SysWOW64\240625687.bat

Filesize
51KB

MD5
3b0977272bcaa4a5cce1a383804ac2ac

SHA1
beab231ee9c006d0d9fc8cef2586dd93e986a078

SHA256
c37aa4c6b5f8c5271674659140d7579a3ece9f88e37f06009452d03647ebb978

SHA512
4e3b43a0166a6df33085bd54c6ff8ab5b139f3084bd121b0f41d066b3ef74300ae8a2aaf65803ba2503d48d9b425dc2e08c2a9f44941f5753a31687bfb84d301

Download Submit
C:\Windows\SysWOW64\svchcst.exe

Filesize
60KB

MD5
889b99c52a60dd49227c5e485a016679

SHA1
8fa889e456aa646a4d0a4349977430ce5fa5e2d7

SHA256
6cbe0e1f046b13b29bfa26f8b368281d2dda7eb9b718651d5856f22cc3e02910

SHA512
08933106eaf338dd119c45cbf1f83e723aff77cc0f8d3fc84e36253b1eb31557a54211d1d5d1cb58958188e32064d451f6c66a24b3963cccd3de07299ab90641

Download Submit

Analysis

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