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
behavioral1/files/0x000800000001739a-6.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\\259441019.bat"	look2.exe

Executes dropped EXE 3 IoCs

pid	Process
1268	look2.exe
2060	HD_b782eb18e415722aa14a0b8a51f3d6a8f108efc3b5c0f8304dafc939bf1cab1eN.exe
2800	svchcst.exe

Loads dropped DLL 7 IoCs

pid	Process
2276	b782eb18e415722aa14a0b8a51f3d6a8f108efc3b5c0f8304dafc939bf1cab1eN.exe
1268	look2.exe
2940	svchost.exe
2276	b782eb18e415722aa14a0b8a51f3d6a8f108efc3b5c0f8304dafc939bf1cab1eN.exe
2276	b782eb18e415722aa14a0b8a51f3d6a8f108efc3b5c0f8304dafc939bf1cab1eN.exe
2940	svchost.exe
2800	svchcst.exe

Drops file in System32 directory 4 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\259441019.bat	look2.exe
File opened for modification	C:\Windows\SysWOW64\ini.ini	look2.exe
File created	C:\Windows\SysWOW64\svchcst.exe	svchost.exe
File opened for modification	C:\Windows\SysWOW64\svchcst.exe	svchost.exe

Drops file in Program Files directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Program Files (x86)\Adobe\Reader 9.0\Reader\AcroRd32.exe	b782eb18e415722aa14a0b8a51f3d6a8f108efc3b5c0f8304dafc939bf1cab1eN.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 4 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	look2.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchcst.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	b782eb18e415722aa14a0b8a51f3d6a8f108efc3b5c0f8304dafc939bf1cab1eN.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
2276	b782eb18e415722aa14a0b8a51f3d6a8f108efc3b5c0f8304dafc939bf1cab1eN.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
2276	b782eb18e415722aa14a0b8a51f3d6a8f108efc3b5c0f8304dafc939bf1cab1eN.exe
2276	b782eb18e415722aa14a0b8a51f3d6a8f108efc3b5c0f8304dafc939bf1cab1eN.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 2276 wrote to memory of 1268	2276	b782eb18e415722aa14a0b8a51f3d6a8f108efc3b5c0f8304dafc939bf1cab1eN.exe	30
PID 2276 wrote to memory of 1268	2276	b782eb18e415722aa14a0b8a51f3d6a8f108efc3b5c0f8304dafc939bf1cab1eN.exe	30
PID 2276 wrote to memory of 1268	2276	b782eb18e415722aa14a0b8a51f3d6a8f108efc3b5c0f8304dafc939bf1cab1eN.exe	30
PID 2276 wrote to memory of 1268	2276	b782eb18e415722aa14a0b8a51f3d6a8f108efc3b5c0f8304dafc939bf1cab1eN.exe	30
PID 2276 wrote to memory of 2060	2276	b782eb18e415722aa14a0b8a51f3d6a8f108efc3b5c0f8304dafc939bf1cab1eN.exe	33
PID 2276 wrote to memory of 2060	2276	b782eb18e415722aa14a0b8a51f3d6a8f108efc3b5c0f8304dafc939bf1cab1eN.exe	33
PID 2276 wrote to memory of 2060	2276	b782eb18e415722aa14a0b8a51f3d6a8f108efc3b5c0f8304dafc939bf1cab1eN.exe	33
PID 2276 wrote to memory of 2060	2276	b782eb18e415722aa14a0b8a51f3d6a8f108efc3b5c0f8304dafc939bf1cab1eN.exe	33
PID 2940 wrote to memory of 2800	2940	svchost.exe	36
PID 2940 wrote to memory of 2800	2940	svchost.exe	36
PID 2940 wrote to memory of 2800	2940	svchost.exe	36
PID 2940 wrote to memory of 2800	2940	svchost.exe	36

C:\Users\Admin\AppData\Local\Temp\b782eb18e415722aa14a0b8a51f3d6a8f108efc3b5c0f8304dafc939bf1cab1eN.exe
"C:\Users\Admin\AppData\Local\Temp\b782eb18e415722aa14a0b8a51f3d6a8f108efc3b5c0f8304dafc939bf1cab1eN.exe"
1⤵
- Loads dropped DLL
- Drops file in Program Files directory
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2276
- 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:1268
- C:\Users\Admin\AppData\Local\Temp\HD_b782eb18e415722aa14a0b8a51f3d6a8f108efc3b5c0f8304dafc939bf1cab1eN.exe
  C:\Users\Admin\AppData\Local\Temp\HD_b782eb18e415722aa14a0b8a51f3d6a8f108efc3b5c0f8304dafc939bf1cab1eN.exe
  2⤵
  - Executes dropped EXE
  PID:2060

C:\Windows\SysWOW64\svchost.exe
C:\Windows\SysWOW64\svchost.exe -k "svchcst"
1⤵
PID:2652

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:2940
- C:\Windows\SysWOW64\svchcst.exe
  C:\Windows\system32\svchcst.exe "c:\windows\system32\259441019.bat",MainThread
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - System Location Discovery: System Language Discovery
  PID:2800

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_X.dat

Filesize
1.3MB

MD5
a3b312045874c1b649aa97591b6598b6

SHA1
5f7d6e1704562bc40ea31b9acfa26ad36ceaf00c

SHA256
8f00e0d6fbe748bc26e5c2b9f19b3c754b96d0e539aaaa48a0d7a1ee6053bf15

SHA512
69bb57d9ab8530580ae96d1955a937abc8e0f1bba175c1525d8eb9a1cbb904299451a9b34500ad38c63ca0e6f40f71cf77023a28d0ead060acc00867ed39d671

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

Filesize
1.4MB

MD5
7cc6e95a8597b92f87b199597b2501e5

SHA1
4c73f58b8e163c8f207cc84e7ce50723b65f8bd7

SHA256
d339380d8915f5a3a2f57a255d0555135e80e014c87c0201227aaa4f81142ebb

SHA512
d39deb609883fb2316234837c17dae9e73cd99dd6373348f2bbb591540a54bfde2bd28bb05d1c31de40a31fbf4122edf757a8a14bcca2011856d612e1e8a684f

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\Users\Admin\AppData\Local\Temp\look2.exe

Filesize
337KB

MD5
2f3b6f16e33e28ad75f3fdaef2567807

SHA1
85e907340faf1edfc9210db85a04abd43d21b741

SHA256
86492ebf2d6f471a5ee92977318d099b3ea86175b5b7ae522237ae01d07a4857

SHA512
db17e99e2df918cfc9ccbe934adfe73f0777ce1ce9f28b57a4b24ecd821efe2e0b976a634853247b77b16627d2bb3af4ba20306059d1d25ef38ffada7da3e3a4

Download Submit
\Windows\SysWOW64\259441019.bat

Filesize
51KB

MD5
a38fbdb1b8c173537b6fffe702b04cba

SHA1
97df580857924fe6b57cc06fcd77a38c5c05c849

SHA256
63e0a34bde85a1a3e016ec6e765802a2a00422b195992c1230712798357fb358

SHA512
148b98fe2c8977db84fad9c74589033e7b1e626eb1fa29b82ed7792467cbf45f1aedb2f44dcfe21a06b435ad4e2a0ea40848877a572eb3db97c9f4d21ef4931b

Download Submit
\Windows\SysWOW64\svchcst.exe

Filesize
43KB

MD5
51138beea3e2c21ec44d0932c71762a8

SHA1
8939cf35447b22dd2c6e6f443446acc1bf986d58

SHA256
5ad3c37e6f2b9db3ee8b5aeedc474645de90c66e3d95f8620c48102f1eba4124

SHA512
794f30fe452117ff2a26dc9d7086aaf82b639c2632ac2e381a81f5239caaec7c96922ba5d2d90bfd8d74f0a6cd4f79fbda63e14c6b779e5cf6834c13e4e45e7d

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Analysis

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