gh0strat | 47adf8083f73c20364fb88abce106f4e2126dbb08be18d0a066a9a8fc10ec436

Analysis

max time kernel
79s
max time network
148s
platform
windows10-2004_x64
resource
win10v2004-20220901-en
resource tags

arch:x64arch:x86image:win10v2004-20220901-enlocale:en-usos:windows10-2004-x64system
submitted
29-01-2023 16:33

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General

Target

tmp.exe
Size

112KB
MD5

67dfc7730a6d14715de7b28db5f23c0b
SHA1

d958daeef153d07f1b5013ec2e2d8833360874c3
SHA256

47adf8083f73c20364fb88abce106f4e2126dbb08be18d0a066a9a8fc10ec436
SHA512

edb7d3b61aa7b3c2163f88516aef3ef941a98e7b2f5eaf9a8ba427b48566971b273a43277e738cb52b6602dd67b0bd998d4b4da38065db56c0b7429e292b0a55
SSDEEP

1536:vqEA70HzLJksPEOajozLElnqiO27dJ/tHi:vXTLJkQ7zAV3HtC

Score

10^/10

gh0strat persistence rat

Malware Config

Signatures

Gh0st RAT payload 4 IoCs

resource	yara_rule
behavioral2/files/0x0003000000022def-132.dat	family_gh0strat
behavioral2/files/0x0003000000022def-133.dat	family_gh0strat
behavioral2/files/0x0003000000022def-134.dat	family_gh0strat
behavioral2/files/0x0003000000022def-140.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

Executes dropped EXE 1 IoCs

pid	Process
1096	conhost.exe

Sets DLL path for service in the registry 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\conhost\Parameters\ServiceDll = "C:\\Program Files (x86)\\Google\\240581687.dll"	tmp.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-1-5-21-929662420-1054238289-2961194603-1000\Control Panel\International\Geo\Nation	tmp.exe

Loads dropped DLL 3 IoCs

pid	Process
3736	tmp.exe
384	svchost.exe
1096	conhost.exe

Creates a Windows Service
persistence

Drops file in System32 directory 2 IoCs

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

Drops file in Program Files directory 1 IoCs

description	ioc	Process
File created	C:\Program Files (x86)\Google\240581687.dll	tmp.exe

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

System Information Discovery
T1082

Checks processor information in registry 2 TTPs 2 IoCs

Processor information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	conhost.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz	conhost.exe

Modifies data under HKEY_USERS 5 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\ActiveMovie\devenum	conhost.exe
Key created	\REGISTRY\USER\.DEFAULT\Software	conhost.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft	conhost.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\ActiveMovie	conhost.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\ActiveMovie\devenum\Version = "7"	conhost.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
1084	PING.EXE

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
3736	tmp.exe
3736	tmp.exe
1096	conhost.exe
1096	conhost.exe
1096	conhost.exe
1096	conhost.exe
1096	conhost.exe
1096	conhost.exe
1096	conhost.exe
1096	conhost.exe
1096	conhost.exe
1096	conhost.exe
1096	conhost.exe
1096	conhost.exe
1096	conhost.exe
1096	conhost.exe
1096	conhost.exe
1096	conhost.exe
1096	conhost.exe
1096	conhost.exe
1096	conhost.exe
1096	conhost.exe
1096	conhost.exe
1096	conhost.exe
1096	conhost.exe
1096	conhost.exe
1096	conhost.exe
1096	conhost.exe
1096	conhost.exe
1096	conhost.exe
1096	conhost.exe
1096	conhost.exe
1096	conhost.exe
1096	conhost.exe
1096	conhost.exe
1096	conhost.exe
1096	conhost.exe
1096	conhost.exe
1096	conhost.exe
1096	conhost.exe
1096	conhost.exe
1096	conhost.exe
1096	conhost.exe
1096	conhost.exe
1096	conhost.exe
1096	conhost.exe
1096	conhost.exe
1096	conhost.exe
1096	conhost.exe
1096	conhost.exe
1096	conhost.exe
1096	conhost.exe
1096	conhost.exe
1096	conhost.exe
1096	conhost.exe
1096	conhost.exe
1096	conhost.exe
1096	conhost.exe
1096	conhost.exe
1096	conhost.exe
1096	conhost.exe
1096	conhost.exe
1096	conhost.exe
1096	conhost.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeIncBasePriorityPrivilege	3736	tmp.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
3736	tmp.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 3736 wrote to memory of 3492	3736	tmp.exe	85
PID 3736 wrote to memory of 3492	3736	tmp.exe	85
PID 3736 wrote to memory of 3492	3736	tmp.exe	85
PID 3492 wrote to memory of 1084	3492	cmd.exe	87
PID 3492 wrote to memory of 1084	3492	cmd.exe	87
PID 3492 wrote to memory of 1084	3492	cmd.exe	87
PID 384 wrote to memory of 1096	384	svchost.exe	88
PID 384 wrote to memory of 1096	384	svchost.exe	88
PID 384 wrote to memory of 1096	384	svchost.exe	88

C:\Users\Admin\AppData\Local\Temp\tmp.exe
"C:\Users\Admin\AppData\Local\Temp\tmp.exe"
1⤵
- Sets DLL path for service in the registry
- Checks computer location settings
- Loads dropped DLL
- Drops file in Program Files directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3736
- 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\tmp.exe"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:3492
- - C:\Windows\SysWOW64\PING.EXE
    ping 127.0.0.1 -n 1
    3⤵
    - Runs ping.exe
    PID:1084

C:\Windows\SysWOW64\svchost.exe
C:\Windows\SysWOW64\svchost.exe -k "conhost"
1⤵
PID:3628

C:\Windows\SysWOW64\svchost.exe
C:\Windows\SysWOW64\svchost.exe -k "conhost"
1⤵
- Loads dropped DLL
- Drops file in System32 directory
- Suspicious use of WriteProcessMemory
PID:384
- C:\Windows\SysWOW64\conhost.exe
  C:\Windows\system32\conhost.exe "c:\program files (x86)\google\240581687.dll",MainThread
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - Checks processor information in registry
  - Modifies data under HKEY_USERS
  - Suspicious behavior: EnumeratesProcesses
  PID:1096

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

T1060

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Query Registry

T1012

Remote System Discovery

T1018

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Program Files (x86)\Google\240581687.dll

Filesize
37KB

MD5
a82711b0386df6e52b7b08c101d353bd

SHA1
3bd550c78c767110ce16b8bc7dfff24e15b2605f

SHA256
72740b0c3044e5467254cdac513627a80c130a97811c4aa6ea4d9a3d084a52d2

SHA512
52ac233f0ad92e1cd1601ff5284c48cd69903155ff4d142dcd19c423d09dcd089e6ae63d8c47dcca948f631ec68a070a899974e4465d3ecdf6361f59262291b1

Download Submit
C:\Program Files (x86)\Google\240581687.dll

Filesize
37KB

MD5
a82711b0386df6e52b7b08c101d353bd

SHA1
3bd550c78c767110ce16b8bc7dfff24e15b2605f

SHA256
72740b0c3044e5467254cdac513627a80c130a97811c4aa6ea4d9a3d084a52d2

SHA512
52ac233f0ad92e1cd1601ff5284c48cd69903155ff4d142dcd19c423d09dcd089e6ae63d8c47dcca948f631ec68a070a899974e4465d3ecdf6361f59262291b1

Download Submit
C:\Program Files (x86)\Google\240581687.dll

Filesize
37KB

MD5
a82711b0386df6e52b7b08c101d353bd

SHA1
3bd550c78c767110ce16b8bc7dfff24e15b2605f

SHA256
72740b0c3044e5467254cdac513627a80c130a97811c4aa6ea4d9a3d084a52d2

SHA512
52ac233f0ad92e1cd1601ff5284c48cd69903155ff4d142dcd19c423d09dcd089e6ae63d8c47dcca948f631ec68a070a899974e4465d3ecdf6361f59262291b1

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

Filesize
60KB

MD5
889b99c52a60dd49227c5e485a016679

SHA1
8fa889e456aa646a4d0a4349977430ce5fa5e2d7

SHA256
6cbe0e1f046b13b29bfa26f8b368281d2dda7eb9b718651d5856f22cc3e02910

SHA512
08933106eaf338dd119c45cbf1f83e723aff77cc0f8d3fc84e36253b1eb31557a54211d1d5d1cb58958188e32064d451f6c66a24b3963cccd3de07299ab90641

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

Filesize
60KB

MD5
889b99c52a60dd49227c5e485a016679

SHA1
8fa889e456aa646a4d0a4349977430ce5fa5e2d7

SHA256
6cbe0e1f046b13b29bfa26f8b368281d2dda7eb9b718651d5856f22cc3e02910

SHA512
08933106eaf338dd119c45cbf1f83e723aff77cc0f8d3fc84e36253b1eb31557a54211d1d5d1cb58958188e32064d451f6c66a24b3963cccd3de07299ab90641

Download Submit
\??\c:\program files (x86)\google\240581687.dll

Filesize
37KB

MD5
a82711b0386df6e52b7b08c101d353bd

SHA1
3bd550c78c767110ce16b8bc7dfff24e15b2605f

SHA256
72740b0c3044e5467254cdac513627a80c130a97811c4aa6ea4d9a3d084a52d2

SHA512
52ac233f0ad92e1cd1601ff5284c48cd69903155ff4d142dcd19c423d09dcd089e6ae63d8c47dcca948f631ec68a070a899974e4465d3ecdf6361f59262291b1

Download Submit