gh0strat | 73096690ffc9dad9df868fa94030607f4361bf9cd4e6a0f7e940d8696d758f4c

General

Target

x64exe.exe
Size

32KB
MD5

2e0699c149b6e8f5052c9ca681b31483
SHA1

d92c92fe190de3e2eacbe2c7ca0c379af8e06ec4
SHA256

73096690ffc9dad9df868fa94030607f4361bf9cd4e6a0f7e940d8696d758f4c
SHA512

a6cbe0b466479bda0d2b7fe2a19e5463dcd56a53a2bd3e072fa5e97eaee0f581f7eba289d6f6016c6abf34340f611883636b924492738a92cc21bcb4fec3fbb2
SSDEEP

768:1w/iOWTK3JWhOM/qZh7UJGcZ/VN0BlXGnbcuyD7Urs9:WQK52fqZSIA9olXGnouy8rs9

Score

10^/10

gh0strat runningrat persistence rat upx

Malware Config

Extracted

Family

gh0strat

C2

sky.hobuff.info

Signatures

Gh0st RAT payload 5 IoCs

resource	yara_rule
behavioral2/files/0x000800000002323b-135.dat	family_gh0strat
behavioral2/files/0x000800000002323b-138.dat	family_gh0strat
behavioral2/files/0x000800000002323b-139.dat	family_gh0strat
behavioral2/memory/1468-141-0x0000000000400000-0x0000000000420000-memory.dmp	family_gh0strat
behavioral2/files/0x000800000002323b-145.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
RunningRat
RunningRat is a remote access trojan first seen in 2018.
rat runningrat

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\serivecs\Parameters\ServiceDll = "C:\\Windows\\system32\\240558859.dll"	x64exe.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-1-5-21-2177513644-1903222820-241662473-1000\Control Panel\International\Geo\Nation	x64exe.exe

Executes dropped EXE 1 IoCs

pid	Process
32	serivecs.exe

Loads dropped DLL 3 IoCs

pid	Process
1468	x64exe.exe
1848	svchost.exe
32	serivecs.exe

UPX packed file 2 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

resource	yara_rule
behavioral2/memory/1468-133-0x0000000000400000-0x0000000000420000-memory.dmp	upx
behavioral2/memory/1468-141-0x0000000000400000-0x0000000000420000-memory.dmp	upx

Creates a Windows Service
persistence

Drops file in System32 directory 3 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\240558859.dll	x64exe.exe
File created	C:\Windows\SysWOW64\serivecs.exe	svchost.exe
File opened for modification	C:\Windows\SysWOW64\serivecs.exe	svchost.exe

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

System Information Discovery
T1082

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
2152	PING.EXE

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
1468	x64exe.exe
1468	x64exe.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeIncBasePriorityPrivilege	1468	x64exe.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1468	x64exe.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 1468 wrote to memory of 4256	1468	x64exe.exe	88
PID 1468 wrote to memory of 4256	1468	x64exe.exe	88
PID 1468 wrote to memory of 4256	1468	x64exe.exe	88
PID 4256 wrote to memory of 2152	4256	cmd.exe	90
PID 4256 wrote to memory of 2152	4256	cmd.exe	90
PID 4256 wrote to memory of 2152	4256	cmd.exe	90
PID 1848 wrote to memory of 32	1848	svchost.exe	91
PID 1848 wrote to memory of 32	1848	svchost.exe	91
PID 1848 wrote to memory of 32	1848	svchost.exe	91

C:\Users\Admin\AppData\Local\Temp\x64exe.exe
"C:\Users\Admin\AppData\Local\Temp\x64exe.exe"
1⤵
- Sets DLL path for service in the registry
- Checks computer location settings
- Loads dropped DLL
- Drops file in System32 directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1468
- 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\x64exe.exe"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:4256
- - C:\Windows\SysWOW64\PING.EXE
    ping 127.0.0.1 -n 1
    3⤵
    - Runs ping.exe
    PID:2152

C:\Windows\SysWOW64\svchost.exe
C:\Windows\SysWOW64\svchost.exe -k "serivecs"
1⤵
PID:1772

C:\Windows\SysWOW64\svchost.exe
C:\Windows\SysWOW64\svchost.exe -k "serivecs"
1⤵
- Loads dropped DLL
- Drops file in System32 directory
- Suspicious use of WriteProcessMemory
PID:1848
- C:\Windows\SysWOW64\serivecs.exe
  C:\Windows\system32\serivecs.exe "c:\windows\system32\240558859.dll",MainThread
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  PID:32

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

Query Registry

1

T1012

Remote System Discovery

1

T1018

System Information Discovery

2

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Windows\SysWOW64\240558859.dll

Filesize
37KB

MD5
67471f9e74ce07e6de4be37cd6fadf51

SHA1
57cf550e19df2e8c04a71e712be4dcf58a17faef

SHA256
7faf403b9748cdc9b8f8aba98a64567fcd9c5ad490bcc31a0b6cce978003e754

SHA512
b182b3bd77f5c9a867c84d08b1fb36a4fc715b7dc6970651ca2640fb6147cf0a49fb526d51d56ad31279b2d9ae363a29f0062ba1f8c363279f9b45b2cce569b2

Download Submit
C:\Windows\SysWOW64\240558859.dll

Filesize
37KB

MD5
67471f9e74ce07e6de4be37cd6fadf51

SHA1
57cf550e19df2e8c04a71e712be4dcf58a17faef

SHA256
7faf403b9748cdc9b8f8aba98a64567fcd9c5ad490bcc31a0b6cce978003e754

SHA512
b182b3bd77f5c9a867c84d08b1fb36a4fc715b7dc6970651ca2640fb6147cf0a49fb526d51d56ad31279b2d9ae363a29f0062ba1f8c363279f9b45b2cce569b2

Download Submit
C:\Windows\SysWOW64\240558859.dll

Filesize
37KB

MD5
67471f9e74ce07e6de4be37cd6fadf51

SHA1
57cf550e19df2e8c04a71e712be4dcf58a17faef

SHA256
7faf403b9748cdc9b8f8aba98a64567fcd9c5ad490bcc31a0b6cce978003e754

SHA512
b182b3bd77f5c9a867c84d08b1fb36a4fc715b7dc6970651ca2640fb6147cf0a49fb526d51d56ad31279b2d9ae363a29f0062ba1f8c363279f9b45b2cce569b2

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

Filesize
60KB

MD5
889b99c52a60dd49227c5e485a016679

SHA1
8fa889e456aa646a4d0a4349977430ce5fa5e2d7

SHA256
6cbe0e1f046b13b29bfa26f8b368281d2dda7eb9b718651d5856f22cc3e02910

SHA512
08933106eaf338dd119c45cbf1f83e723aff77cc0f8d3fc84e36253b1eb31557a54211d1d5d1cb58958188e32064d451f6c66a24b3963cccd3de07299ab90641

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

Filesize
60KB

MD5
889b99c52a60dd49227c5e485a016679

SHA1
8fa889e456aa646a4d0a4349977430ce5fa5e2d7

SHA256
6cbe0e1f046b13b29bfa26f8b368281d2dda7eb9b718651d5856f22cc3e02910

SHA512
08933106eaf338dd119c45cbf1f83e723aff77cc0f8d3fc84e36253b1eb31557a54211d1d5d1cb58958188e32064d451f6c66a24b3963cccd3de07299ab90641

Download Submit
\??\c:\windows\SysWOW64\240558859.dll

Filesize
37KB

MD5
67471f9e74ce07e6de4be37cd6fadf51

SHA1
57cf550e19df2e8c04a71e712be4dcf58a17faef

SHA256
7faf403b9748cdc9b8f8aba98a64567fcd9c5ad490bcc31a0b6cce978003e754

SHA512
b182b3bd77f5c9a867c84d08b1fb36a4fc715b7dc6970651ca2640fb6147cf0a49fb526d51d56ad31279b2d9ae363a29f0062ba1f8c363279f9b45b2cce569b2

Download Submit
memory/1468-133-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/1468-141-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download

Analysis

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