gh0strat | 93c75fff7e530e1f6d0c978dda74c2ab7014c278d5e065bd98225ba76466a851

General

Target

86.exe
Size

32KB
MD5

8456c8dede98f1db930ae403bd2741a5
SHA1

efb2571a9ed39f780546cdc4568fec905bb20c1d
SHA256

93c75fff7e530e1f6d0c978dda74c2ab7014c278d5e065bd98225ba76466a851
SHA512

59df2163d17a045d214bde6a9eff87c6df7d84d1d088da5f4c01e8864b4244fc94dacb819baf2c19d3d3e396606d4518c69e601728ebba2ef122d50da025f617
SSDEEP

768:Nw/iOWTK3JWhOM/qZh7UJGcZ/VCm865x+BVnbcuyD7U7s9:OQK52fqZSIA9H865Inouy87s9

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/0x000700000002312f-135.dat	family_gh0strat
behavioral2/files/0x000700000002312f-138.dat	family_gh0strat
behavioral2/files/0x000700000002312f-139.dat	family_gh0strat
behavioral2/memory/4704-141-0x0000000000400000-0x0000000000420000-memory.dmp	family_gh0strat
behavioral2/files/0x000700000002312f-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\\240548937.dll"	86.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-1-5-21-2548970870-3691742953-3895070203-1000\Control Panel\International\Geo\Nation	86.exe

Executes dropped EXE 1 IoCs

pid	Process
3960	serivecs.exe

Loads dropped DLL 3 IoCs

pid	Process
4704	86.exe
4856	svchost.exe
3960	serivecs.exe

UPX packed file 2 IoCs

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

upx

resource	yara_rule
behavioral2/memory/4704-133-0x0000000000400000-0x0000000000420000-memory.dmp	upx
behavioral2/memory/4704-141-0x0000000000400000-0x0000000000420000-memory.dmp	upx

Creates a Windows Service
persistence

Drops file in System32 directory 3 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\serivecs.exe	svchost.exe
File created	C:\Windows\SysWOW64\240548937.dll	86.exe
File created	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
3772	PING.EXE

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
4704	86.exe
4704	86.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeIncBasePriorityPrivilege	4704	86.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
4704	86.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 4704 wrote to memory of 1360	4704	86.exe	86
PID 4704 wrote to memory of 1360	4704	86.exe	86
PID 4704 wrote to memory of 1360	4704	86.exe	86
PID 1360 wrote to memory of 3772	1360	cmd.exe	88
PID 1360 wrote to memory of 3772	1360	cmd.exe	88
PID 1360 wrote to memory of 3772	1360	cmd.exe	88
PID 4856 wrote to memory of 3960	4856	svchost.exe	89
PID 4856 wrote to memory of 3960	4856	svchost.exe	89
PID 4856 wrote to memory of 3960	4856	svchost.exe	89

C:\Users\Admin\AppData\Local\Temp\86.exe
"C:\Users\Admin\AppData\Local\Temp\86.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:4704
- 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\86.exe"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:1360
- - C:\Windows\SysWOW64\PING.EXE
    ping 127.0.0.1 -n 1
    3⤵
    - Runs ping.exe
    PID:3772

C:\Windows\SysWOW64\svchost.exe
C:\Windows\SysWOW64\svchost.exe -k "serivecs"
1⤵
PID:3528

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:4856
- C:\Windows\SysWOW64\serivecs.exe
  C:\Windows\system32\serivecs.exe "c:\windows\system32\240548937.dll",MainThread
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  PID:3960

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\240548937.dll

Filesize
37KB

MD5
f994f3274b69412de74c8d62c98b356f

SHA1
f5b4aad1093150263aea8f0fae7bc3d810fbd294

SHA256
44e8d6c1ecf0561a737897360210ee8f9c382139ad699320deeb23c764e13291

SHA512
8eb2222649d567d8a43c0fb8de46afaa77a99490a9fbfeef679810b8a01b622a3059c740b8dcaef4a7df7801d4a2cae7b54ded7e59a6e75dbb221c93c315cd0f

Download Submit
C:\Windows\SysWOW64\240548937.dll

Filesize
37KB

MD5
f994f3274b69412de74c8d62c98b356f

SHA1
f5b4aad1093150263aea8f0fae7bc3d810fbd294

SHA256
44e8d6c1ecf0561a737897360210ee8f9c382139ad699320deeb23c764e13291

SHA512
8eb2222649d567d8a43c0fb8de46afaa77a99490a9fbfeef679810b8a01b622a3059c740b8dcaef4a7df7801d4a2cae7b54ded7e59a6e75dbb221c93c315cd0f

Download Submit
C:\Windows\SysWOW64\240548937.dll

Filesize
37KB

MD5
f994f3274b69412de74c8d62c98b356f

SHA1
f5b4aad1093150263aea8f0fae7bc3d810fbd294

SHA256
44e8d6c1ecf0561a737897360210ee8f9c382139ad699320deeb23c764e13291

SHA512
8eb2222649d567d8a43c0fb8de46afaa77a99490a9fbfeef679810b8a01b622a3059c740b8dcaef4a7df7801d4a2cae7b54ded7e59a6e75dbb221c93c315cd0f

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\240548937.dll

Filesize
37KB

MD5
f994f3274b69412de74c8d62c98b356f

SHA1
f5b4aad1093150263aea8f0fae7bc3d810fbd294

SHA256
44e8d6c1ecf0561a737897360210ee8f9c382139ad699320deeb23c764e13291

SHA512
8eb2222649d567d8a43c0fb8de46afaa77a99490a9fbfeef679810b8a01b622a3059c740b8dcaef4a7df7801d4a2cae7b54ded7e59a6e75dbb221c93c315cd0f

Download Submit
memory/4704-133-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/4704-141-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download

Analysis

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