gh0strat | 223278e7f27613207535c392734433b4413da28fe44e43c89c2379475430f67d

Analysis

max time kernel
176s
max time network
191s
platform
windows10-2004_x64
resource
win10v2004-20221111-en
resource tags

arch:x64arch:x86image:win10v2004-20221111-enlocale:en-usos:windows10-2004-x64system
submitted
29-01-2023 16:25

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General

Target

tmp.exe
Size

112KB
MD5

376f65c925a7319f88beee5075cfa944
SHA1

c4e6099c945fb3a686f0a5f32108f3ca1334d3be
SHA256

223278e7f27613207535c392734433b4413da28fe44e43c89c2379475430f67d
SHA512

1bcde068e944f698ef3ef93804c525c118854873011b7c2435bbb0a6db5be0d1b56cf99e1d6de42460cd76056dd215e83442a6791ee8b3c3f3a246b113a90f14
SSDEEP

1536:vqEA70HzLJksPEOajozLElnqiO2HdJ/tHi:vXTLJkQ7zAV37tC

Score

10^/10

gh0strat persistence rat

Malware Config

Signatures

Gh0st RAT payload 4 IoCs

resource	yara_rule
behavioral2/files/0x0003000000000721-132.dat	family_gh0strat
behavioral2/files/0x0003000000000721-134.dat	family_gh0strat
behavioral2/files/0x0003000000000721-133.dat	family_gh0strat
behavioral2/files/0x0003000000000721-140.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
220	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\\240603218.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-1-5-21-2971393436-602173351-1645505021-1000\Control Panel\International\Geo\Nation	tmp.exe

Loads dropped DLL 3 IoCs

pid	Process
1760	tmp.exe
4596	svchost.exe
220	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\240603218.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	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
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\ActiveMovie\devenum	conhost.exe
Key created	\REGISTRY\USER\.DEFAULT\Software	conhost.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
4696	PING.EXE

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
1760	tmp.exe
1760	tmp.exe
220	conhost.exe
220	conhost.exe
220	conhost.exe
220	conhost.exe
220	conhost.exe
220	conhost.exe
220	conhost.exe
220	conhost.exe
220	conhost.exe
220	conhost.exe
220	conhost.exe
220	conhost.exe
220	conhost.exe
220	conhost.exe
220	conhost.exe
220	conhost.exe
220	conhost.exe
220	conhost.exe
220	conhost.exe
220	conhost.exe
220	conhost.exe
220	conhost.exe
220	conhost.exe
220	conhost.exe
220	conhost.exe
220	conhost.exe
220	conhost.exe
220	conhost.exe
220	conhost.exe
220	conhost.exe
220	conhost.exe
220	conhost.exe
220	conhost.exe
220	conhost.exe
220	conhost.exe
220	conhost.exe
220	conhost.exe
220	conhost.exe
220	conhost.exe
220	conhost.exe
220	conhost.exe
220	conhost.exe
220	conhost.exe
220	conhost.exe
220	conhost.exe
220	conhost.exe
220	conhost.exe
220	conhost.exe
220	conhost.exe
220	conhost.exe
220	conhost.exe
220	conhost.exe
220	conhost.exe
220	conhost.exe
220	conhost.exe
220	conhost.exe
220	conhost.exe
220	conhost.exe
220	conhost.exe
220	conhost.exe
220	conhost.exe
220	conhost.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeIncBasePriorityPrivilege	1760	tmp.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1760	tmp.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 1760 wrote to memory of 3112	1760	tmp.exe	84
PID 1760 wrote to memory of 3112	1760	tmp.exe	84
PID 1760 wrote to memory of 3112	1760	tmp.exe	84
PID 3112 wrote to memory of 4696	3112	cmd.exe	86
PID 3112 wrote to memory of 4696	3112	cmd.exe	86
PID 3112 wrote to memory of 4696	3112	cmd.exe	86
PID 4596 wrote to memory of 220	4596	svchost.exe	87
PID 4596 wrote to memory of 220	4596	svchost.exe	87
PID 4596 wrote to memory of 220	4596	svchost.exe	87

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:1760
- 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:3112
- - C:\Windows\SysWOW64\PING.EXE
    ping 127.0.0.1 -n 1
    3⤵
    - Runs ping.exe
    PID:4696

C:\Windows\SysWOW64\svchost.exe
C:\Windows\SysWOW64\svchost.exe -k "conhost"
1⤵
PID:3820

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:4596
- C:\Windows\SysWOW64\conhost.exe
  C:\Windows\system32\conhost.exe "c:\program files (x86)\google\240603218.dll",MainThread
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - Checks processor information in registry
  - Modifies data under HKEY_USERS
  - Suspicious behavior: EnumeratesProcesses
  PID:220

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\240603218.dll

Filesize
37KB

MD5
6163baf9b05d3ce0d06911360f053bec

SHA1
d5b83dc1a44f314c08f16258b82b3a1d1d2cdb88

SHA256
c022cd69298ceb9109d1b1a1cb966ab2d79ba7155ee089ec582e2c1dfaa592f0

SHA512
d0757ead9db27c25e93969a833c374e640a39b84a43ab8dafdd7be6b888826fbf0a5d04fbbd62639cd80ca61538be3a4122793a319d6dc8a783ba63497c6949a

Download Submit
C:\Program Files (x86)\Google\240603218.dll

Filesize
37KB

MD5
6163baf9b05d3ce0d06911360f053bec

SHA1
d5b83dc1a44f314c08f16258b82b3a1d1d2cdb88

SHA256
c022cd69298ceb9109d1b1a1cb966ab2d79ba7155ee089ec582e2c1dfaa592f0

SHA512
d0757ead9db27c25e93969a833c374e640a39b84a43ab8dafdd7be6b888826fbf0a5d04fbbd62639cd80ca61538be3a4122793a319d6dc8a783ba63497c6949a

Download Submit
C:\Program Files (x86)\Google\240603218.dll

Filesize
37KB

MD5
6163baf9b05d3ce0d06911360f053bec

SHA1
d5b83dc1a44f314c08f16258b82b3a1d1d2cdb88

SHA256
c022cd69298ceb9109d1b1a1cb966ab2d79ba7155ee089ec582e2c1dfaa592f0

SHA512
d0757ead9db27c25e93969a833c374e640a39b84a43ab8dafdd7be6b888826fbf0a5d04fbbd62639cd80ca61538be3a4122793a319d6dc8a783ba63497c6949a

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\240603218.dll

Filesize
37KB

MD5
6163baf9b05d3ce0d06911360f053bec

SHA1
d5b83dc1a44f314c08f16258b82b3a1d1d2cdb88

SHA256
c022cd69298ceb9109d1b1a1cb966ab2d79ba7155ee089ec582e2c1dfaa592f0

SHA512
d0757ead9db27c25e93969a833c374e640a39b84a43ab8dafdd7be6b888826fbf0a5d04fbbd62639cd80ca61538be3a4122793a319d6dc8a783ba63497c6949a

Download Submit