gh0strat | f92dca5c589b18788810580ea5eea3df92bd0ba9784ea3f70092f29415395f1b

General

Target

f92dca5c589b18788810580ea5eea3df92bd0ba9784ea3f70092f29415395f1b.exe
Size

4.8MB
MD5

e2a2e613a4090da64092041bfa7c81a4
SHA1

2219e4cac81a3634aa875871dcb22bf54ab0c123
SHA256

f92dca5c589b18788810580ea5eea3df92bd0ba9784ea3f70092f29415395f1b
SHA512

e31299e0c90529c4e5ec053ff3c42f5caf29206e6e37f919b16ef489e22bb876e5d6a01e6dbaa38c9069de700610e7b46e17fef97e95fa3381ac36b2a12f03d3
SSDEEP

49152:kYREXSVMDi3F+VbXsPNIULkmp1/j6AeXZG7wmpvGF1IP9z5WuHC4O8b8ITDnl27z:d2SVMD8F+VbXsPN5kiQaZ56

Score

10^/10

Malware Config

Signatures

Gh0st RAT payload 1 IoCs

resource	yara_rule
behavioral2/files/0x000b000000023b76-5.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\\240610921.bat"	look2.exe

Executes dropped EXE 3 IoCs

pid	Process
4160	look2.exe
1124	HD_f92dca5c589b18788810580ea5eea3df92bd0ba9784ea3f70092f29415395f1b.exe
452	svchcst.exe

Loads dropped DLL 3 IoCs

pid	Process
4160	look2.exe
1536	svchost.exe
452	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\240610921.bat	look2.exe
File opened for modification	C:\Windows\SysWOW64\ini.ini	look2.exe

Drops file in Program Files directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\AcroRd32.exe	f92dca5c589b18788810580ea5eea3df92bd0ba9784ea3f70092f29415395f1b.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	f92dca5c589b18788810580ea5eea3df92bd0ba9784ea3f70092f29415395f1b.exe
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	HD_f92dca5c589b18788810580ea5eea3df92bd0ba9784ea3f70092f29415395f1b.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchcst.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
2696	f92dca5c589b18788810580ea5eea3df92bd0ba9784ea3f70092f29415395f1b.exe
2696	f92dca5c589b18788810580ea5eea3df92bd0ba9784ea3f70092f29415395f1b.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
2696	f92dca5c589b18788810580ea5eea3df92bd0ba9784ea3f70092f29415395f1b.exe
2696	f92dca5c589b18788810580ea5eea3df92bd0ba9784ea3f70092f29415395f1b.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 2696 wrote to memory of 4160	2696	f92dca5c589b18788810580ea5eea3df92bd0ba9784ea3f70092f29415395f1b.exe	83
PID 2696 wrote to memory of 4160	2696	f92dca5c589b18788810580ea5eea3df92bd0ba9784ea3f70092f29415395f1b.exe	83
PID 2696 wrote to memory of 4160	2696	f92dca5c589b18788810580ea5eea3df92bd0ba9784ea3f70092f29415395f1b.exe	83
PID 2696 wrote to memory of 1124	2696	f92dca5c589b18788810580ea5eea3df92bd0ba9784ea3f70092f29415395f1b.exe	86
PID 2696 wrote to memory of 1124	2696	f92dca5c589b18788810580ea5eea3df92bd0ba9784ea3f70092f29415395f1b.exe	86
PID 2696 wrote to memory of 1124	2696	f92dca5c589b18788810580ea5eea3df92bd0ba9784ea3f70092f29415395f1b.exe	86
PID 1536 wrote to memory of 452	1536	svchost.exe	98
PID 1536 wrote to memory of 452	1536	svchost.exe	98
PID 1536 wrote to memory of 452	1536	svchost.exe	98

C:\Users\Admin\AppData\Local\Temp\f92dca5c589b18788810580ea5eea3df92bd0ba9784ea3f70092f29415395f1b.exe
"C:\Users\Admin\AppData\Local\Temp\f92dca5c589b18788810580ea5eea3df92bd0ba9784ea3f70092f29415395f1b.exe"
1⤵
- Drops file in Program Files directory
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2696
- 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:4160
- C:\Users\Admin\AppData\Local\Temp\HD_f92dca5c589b18788810580ea5eea3df92bd0ba9784ea3f70092f29415395f1b.exe
  C:\Users\Admin\AppData\Local\Temp\HD_f92dca5c589b18788810580ea5eea3df92bd0ba9784ea3f70092f29415395f1b.exe
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  PID:1124

C:\Windows\SysWOW64\svchost.exe
C:\Windows\SysWOW64\svchost.exe -k "svchcst"
1⤵
PID:3956

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:1536
- C:\Windows\SysWOW64\svchcst.exe
  C:\Windows\system32\svchcst.exe "c:\windows\system32\240610921.bat",MainThread
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - System Location Discovery: System Language Discovery
  PID:452

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_f92dca5c589b18788810580ea5eea3df92bd0ba9784ea3f70092f29415395f1b.exe

Filesize
3.1MB

MD5
fb083acd60fe5c3156dc25442be815e3

SHA1
61df59b8f3ebd8b3d29ca3aedc4995e23cacf6d8

SHA256
f130b3789962d5c8b59aa250d6f26ad5945928f3905b32bf65aa7bd30348a794

SHA512
7147337d2c1006bb15cfa967c9eea6826b63c8d343f866e7454d7368d25019f39e52cf179500810834244c3ca9644d6c0df0b2c3128a9051e9ee6b428fa926f6

Download Submit
C:\Users\Admin\AppData\Local\Temp\RCX700F.tmp

Filesize
1.8MB

MD5
e46f9c955e9259bfe0b67469bee4b8f8

SHA1
9e514bdf6d8fc3548833c9b60da1eca0404cd88f

SHA256
65dc90f509936e57f71d449447dbdfd076d0ead28cccaf7ca71dea8c1ee04672

SHA512
ff983f1e0c186e4c7d924a9fe5e86483e7f398e35eac7831ca2c2f60f384977d0a2cf075dcd5d55d757a155f45ca569573e774ac90702e13f2e594db7fcc8e46

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\240610921.bat

Filesize
51KB

MD5
79e82a89c1fecd1493011d2f95f37b99

SHA1
eaaa627458aed7cebac23bc8c02b063d853bb4a0

SHA256
e46dd6f6da1ccdca280c73f4983948f6d598008b2f9f01a89f01200f2fb89701

SHA512
ee4224c62c157eaa9b0326a957699fb948dc13c46caaf5fff2e4b5346cf9cbbbcdc9d76f3d1054281221d4c9997adf2cc21d7e9bff29d885017958025a68a6b3

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

Filesize
60KB

MD5
889b99c52a60dd49227c5e485a016679

SHA1
8fa889e456aa646a4d0a4349977430ce5fa5e2d7

SHA256
6cbe0e1f046b13b29bfa26f8b368281d2dda7eb9b718651d5856f22cc3e02910

SHA512
08933106eaf338dd119c45cbf1f83e723aff77cc0f8d3fc84e36253b1eb31557a54211d1d5d1cb58958188e32064d451f6c66a24b3963cccd3de07299ab90641

Download Submit

Analysis

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