gh0strat | c858e10e29b769ca86445ba1bebdf708e88245da4e96c4afc967818e8293e099

Analysis

max time kernel
1800s
max time network
1631s
platform
windows11-21h2_x64
resource
win11-20241007-en
resource tags

arch:x64arch:x86image:win11-20241007-enlocale:en-usos:windows11-21h2-x64system
submitted
07-12-2024 18:43

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General

Target

yk1.exe
Size

184KB
MD5

76eb54ffd5a2a2e161b45a9b4e24b71b
SHA1

4031978e9de0805858233e45b9109c376dce1db1
SHA256

5ecc331e0704bb6756aaacc19bd3d356d9c6851819c18df5be8ef76ba46cde95
SHA512

119807cddeb634de800d82fa7eae3d11a40bf2732bac8e6a3a31c14600dee1abcdb945fbb5349895b945120c70a5e4fa9629c26f33cc5972ad0449489ef569d1
SSDEEP

3072:9BFDC2a8kkalMLmNTMeN1vT72dPxIhf+sHS5LTblIdp4nNtmPvqgl:9/inHlN1vTyTIBVHkTblIGUSgl

Score

10^/10

gh0strat discovery evasion rat

Malware Config

Signatures

Gh0st RAT payload 4 IoCs

resource	yara_rule
behavioral32/memory/2536-0-0x0000000000400000-0x0000000000433000-memory.dmp	family_gh0strat
behavioral32/files/0x001c00000002aa53-7.dat	family_gh0strat
behavioral32/memory/2536-18-0x0000000000400000-0x0000000000433000-memory.dmp	family_gh0strat
behavioral32/memory/1548-19-0x0000000000400000-0x0000000000433000-memory.dmp	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

Modifies firewall policy service 3 TTPs 4 IoCs

evasion

Modify Registry

T1112

Windows Service

T1543.003

Disable or Modify System Firewall

T1562.004

description	ioc	Process
Key created	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List	yk1.exe
Key created	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile	yk1.exe
Key created	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications	yk1.exe
Set value (str)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List\C:\Users\Admin\AppData\Local\Temp\yk1.exe = "C:\\Users\\Admin\\AppData\\Local\\Temp\\yk1.exe:*:enabled:@shell32.dll,-1"	yk1.exe

Executes dropped EXE 1 IoCs

pid	Process
1548	zebhau.exe

Drops file in System32 directory 2 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\zebhau.exe	yk1.exe
File opened for modification	C:\Windows\SysWOW64\zebhau.exe	yk1.exe

System Location Discovery: System Language Discovery 1 TTPs 2 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	yk1.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	zebhau.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
2536	yk1.exe
2536	yk1.exe
1548	zebhau.exe
1548	zebhau.exe

Suspicious behavior: MapViewOfSection 64 IoCs

pid	Process
2536	yk1.exe
2536	yk1.exe
2536	yk1.exe
2536	yk1.exe
2536	yk1.exe
2536	yk1.exe
2536	yk1.exe
2536	yk1.exe
2536	yk1.exe
2536	yk1.exe
2536	yk1.exe
2536	yk1.exe
2536	yk1.exe
2536	yk1.exe
2536	yk1.exe
2536	yk1.exe
2536	yk1.exe
2536	yk1.exe
2536	yk1.exe
2536	yk1.exe
2536	yk1.exe
2536	yk1.exe
2536	yk1.exe
2536	yk1.exe
2536	yk1.exe
2536	yk1.exe
2536	yk1.exe
2536	yk1.exe
2536	yk1.exe
2536	yk1.exe
2536	yk1.exe
2536	yk1.exe
2536	yk1.exe
2536	yk1.exe
2536	yk1.exe
2536	yk1.exe
2536	yk1.exe
2536	yk1.exe
2536	yk1.exe
2536	yk1.exe
2536	yk1.exe
2536	yk1.exe
2536	yk1.exe
2536	yk1.exe
2536	yk1.exe
2536	yk1.exe
2536	yk1.exe
2536	yk1.exe
2536	yk1.exe
2536	yk1.exe
2536	yk1.exe
2536	yk1.exe
2536	yk1.exe
2536	yk1.exe
2536	yk1.exe
2536	yk1.exe
2536	yk1.exe
2536	yk1.exe
2536	yk1.exe
2536	yk1.exe
2536	yk1.exe
2536	yk1.exe
2536	yk1.exe
2536	yk1.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2536	yk1.exe
Token: SeDebugPrivilege	1548	zebhau.exe

Suspicious use of WriteProcessMemory 64 IoCs

description	pid	Process	procid_target
PID 2536 wrote to memory of 632	2536	yk1.exe	5
PID 2536 wrote to memory of 632	2536	yk1.exe	5
PID 2536 wrote to memory of 632	2536	yk1.exe	5
PID 2536 wrote to memory of 632	2536	yk1.exe	5
PID 2536 wrote to memory of 632	2536	yk1.exe	5
PID 2536 wrote to memory of 632	2536	yk1.exe	5
PID 2536 wrote to memory of 688	2536	yk1.exe	7
PID 2536 wrote to memory of 688	2536	yk1.exe	7
PID 2536 wrote to memory of 688	2536	yk1.exe	7
PID 2536 wrote to memory of 688	2536	yk1.exe	7
PID 2536 wrote to memory of 688	2536	yk1.exe	7
PID 2536 wrote to memory of 688	2536	yk1.exe	7
PID 2536 wrote to memory of 804	2536	yk1.exe	8
PID 2536 wrote to memory of 804	2536	yk1.exe	8
PID 2536 wrote to memory of 804	2536	yk1.exe	8
PID 2536 wrote to memory of 804	2536	yk1.exe	8
PID 2536 wrote to memory of 804	2536	yk1.exe	8
PID 2536 wrote to memory of 804	2536	yk1.exe	8
PID 2536 wrote to memory of 812	2536	yk1.exe	9
PID 2536 wrote to memory of 812	2536	yk1.exe	9
PID 2536 wrote to memory of 812	2536	yk1.exe	9
PID 2536 wrote to memory of 812	2536	yk1.exe	9
PID 2536 wrote to memory of 812	2536	yk1.exe	9
PID 2536 wrote to memory of 812	2536	yk1.exe	9
PID 2536 wrote to memory of 820	2536	yk1.exe	10
PID 2536 wrote to memory of 820	2536	yk1.exe	10
PID 2536 wrote to memory of 820	2536	yk1.exe	10
PID 2536 wrote to memory of 820	2536	yk1.exe	10
PID 2536 wrote to memory of 820	2536	yk1.exe	10
PID 2536 wrote to memory of 820	2536	yk1.exe	10
PID 2536 wrote to memory of 928	2536	yk1.exe	11
PID 2536 wrote to memory of 928	2536	yk1.exe	11
PID 2536 wrote to memory of 928	2536	yk1.exe	11
PID 2536 wrote to memory of 928	2536	yk1.exe	11
PID 2536 wrote to memory of 928	2536	yk1.exe	11
PID 2536 wrote to memory of 928	2536	yk1.exe	11
PID 2536 wrote to memory of 984	2536	yk1.exe	12
PID 2536 wrote to memory of 984	2536	yk1.exe	12
PID 2536 wrote to memory of 984	2536	yk1.exe	12
PID 2536 wrote to memory of 984	2536	yk1.exe	12
PID 2536 wrote to memory of 984	2536	yk1.exe	12
PID 2536 wrote to memory of 984	2536	yk1.exe	12
PID 2536 wrote to memory of 464	2536	yk1.exe	13
PID 2536 wrote to memory of 464	2536	yk1.exe	13
PID 2536 wrote to memory of 464	2536	yk1.exe	13
PID 2536 wrote to memory of 464	2536	yk1.exe	13
PID 2536 wrote to memory of 464	2536	yk1.exe	13
PID 2536 wrote to memory of 464	2536	yk1.exe	13
PID 2536 wrote to memory of 416	2536	yk1.exe	14
PID 2536 wrote to memory of 416	2536	yk1.exe	14
PID 2536 wrote to memory of 416	2536	yk1.exe	14
PID 2536 wrote to memory of 416	2536	yk1.exe	14
PID 2536 wrote to memory of 416	2536	yk1.exe	14
PID 2536 wrote to memory of 416	2536	yk1.exe	14
PID 2536 wrote to memory of 700	2536	yk1.exe	15
PID 2536 wrote to memory of 700	2536	yk1.exe	15
PID 2536 wrote to memory of 700	2536	yk1.exe	15
PID 2536 wrote to memory of 700	2536	yk1.exe	15
PID 2536 wrote to memory of 700	2536	yk1.exe	15
PID 2536 wrote to memory of 700	2536	yk1.exe	15
PID 2536 wrote to memory of 1064	2536	yk1.exe	16
PID 2536 wrote to memory of 1064	2536	yk1.exe	16
PID 2536 wrote to memory of 1064	2536	yk1.exe	16
PID 2536 wrote to memory of 1064	2536	yk1.exe	16

C:\Windows\system32\winlogon.exe
winlogon.exe
1⤵
PID:632
- C:\Windows\system32\fontdrvhost.exe
  "fontdrvhost.exe"
  2⤵
  PID:812
- C:\Windows\system32\dwm.exe
  "dwm.exe"
  2⤵
  PID:464

C:\Windows\system32\lsass.exe
C:\Windows\system32\lsass.exe
1⤵
PID:688

C:\Windows\system32\fontdrvhost.exe
"fontdrvhost.exe"
1⤵
PID:804

C:\Windows\system32\svchost.exe
C:\Windows\system32\svchost.exe -k DcomLaunch -p
1⤵
PID:820
- C:\Windows\system32\wbem\unsecapp.exe
  C:\Windows\system32\wbem\unsecapp.exe -Embedding
  2⤵
  PID:3116
- C:\Windows\SystemApps\MicrosoftWindows.Client.CBS_cw5n1h2txyewy\SearchHost.exe
  "C:\Windows\SystemApps\MicrosoftWindows.Client.CBS_cw5n1h2txyewy\SearchHost.exe" -ServerName:CortanaUI.AppXstmwaab17q5s3y22tp6apqz7a45vwv65.mca
  2⤵
  PID:3740
- C:\Windows\SystemApps\Microsoft.Windows.StartMenuExperienceHost_cw5n1h2txyewy\StartMenuExperienceHost.exe
  "C:\Windows\SystemApps\Microsoft.Windows.StartMenuExperienceHost_cw5n1h2txyewy\StartMenuExperienceHost.exe" -ServerName:App.AppXywbrabmsek0gm3tkwpr5kwzbs55tkqay.mca
  2⤵
  PID:3752
- C:\Windows\System32\RuntimeBroker.exe
  C:\Windows\System32\RuntimeBroker.exe -Embedding
  2⤵
  PID:3844
- C:\Windows\System32\RuntimeBroker.exe
  C:\Windows\System32\RuntimeBroker.exe -Embedding
  2⤵
  PID:3904
- C:\Windows\system32\DllHost.exe
  C:\Windows\system32\DllHost.exe /Processid:{3EB3C877-1F16-487C-9050-104DBCD66683}
  2⤵
  PID:3996
- C:\Windows\system32\DllHost.exe
  C:\Windows\system32\DllHost.exe /Processid:{973D20D7-562D-44B9-B70B-5A0F49CCDF3F}
  2⤵
  PID:4336
- C:\Windows\system32\SppExtComObj.exe
  C:\Windows\system32\SppExtComObj.exe -Embedding
  2⤵
  PID:1556
- C:\Windows\system32\DllHost.exe
  C:\Windows\system32\DllHost.exe /Processid:{3EB3C877-1F16-487C-9050-104DBCD66683}
  2⤵
  PID:2372

C:\Windows\system32\svchost.exe
C:\Windows\system32\svchost.exe -k RPCSS -p
1⤵
PID:928

C:\Windows\system32\svchost.exe
C:\Windows\system32\svchost.exe -k DcomLaunch -p -s LSM
1⤵
PID:984

C:\Windows\System32\svchost.exe
C:\Windows\System32\svchost.exe -k LocalServiceNetworkRestricted -p -s lmhosts
1⤵
PID:416

C:\Windows\system32\svchost.exe
C:\Windows\system32\svchost.exe -k netsvcs -p -s gpsvc
1⤵
PID:700

C:\Windows\System32\svchost.exe
C:\Windows\System32\svchost.exe -k LocalSystemNetworkRestricted -p -s NcbService
1⤵
PID:1064

C:\Windows\system32\svchost.exe
C:\Windows\system32\svchost.exe -k LocalServiceNetworkRestricted -p -s TimeBrokerSvc
1⤵
PID:1072

C:\Windows\system32\svchost.exe
C:\Windows\system32\svchost.exe -k LocalService -p -s nsi
1⤵
PID:1148

C:\Windows\system32\svchost.exe
C:\Windows\system32\svchost.exe -k LocalServiceNoNetwork -p
1⤵
PID:1172

C:\Windows\system32\svchost.exe
C:\Windows\system32\svchost.exe -k netsvcs -p -s Schedule
1⤵
PID:1224

C:\Windows\System32\svchost.exe
C:\Windows\System32\svchost.exe -k netprofm -p -s netprofm
1⤵
PID:1256

C:\Windows\system32\svchost.exe
C:\Windows\system32\svchost.exe -k netsvcs -p -s ProfSvc
1⤵
PID:1352

C:\Windows\system32\svchost.exe
C:\Windows\system32\svchost.exe -k LocalService -p -s DispBrokerDesktopSvc
1⤵
PID:1420

C:\Windows\System32\svchost.exe
C:\Windows\System32\svchost.exe -k LocalServiceNetworkRestricted -p -s EventLog
1⤵
PID:1460

C:\Windows\system32\svchost.exe
C:\Windows\system32\svchost.exe -k netsvcs -p -s UserManager
1⤵
PID:1540
- C:\Windows\system32\sihost.exe
  sihost.exe
  2⤵
  PID:2912

C:\Windows\system32\svchost.exe
C:\Windows\system32\svchost.exe -k LocalService -p -s EventSystem
1⤵
PID:1560

C:\Windows\System32\svchost.exe
C:\Windows\System32\svchost.exe -k netsvcs -p -s Themes
1⤵
PID:1584

C:\Windows\system32\svchost.exe
C:\Windows\system32\svchost.exe -k NetworkService -p
1⤵
PID:1704

C:\Windows\system32\svchost.exe
C:\Windows\system32\svchost.exe -k netsvcs -p -s SENS
1⤵
PID:1716

C:\Windows\System32\svchost.exe
C:\Windows\System32\svchost.exe -k LocalSystemNetworkRestricted -p -s AudioEndpointBuilder
1⤵
PID:1772

C:\Windows\System32\svchost.exe
C:\Windows\System32\svchost.exe -k LocalServiceNetworkRestricted -p
1⤵
PID:1828

C:\Windows\system32\svchost.exe
C:\Windows\system32\svchost.exe -k LocalServiceNetworkRestricted -p -s Dhcp
1⤵
PID:1884

C:\Windows\system32\svchost.exe
C:\Windows\system32\svchost.exe -k LocalServiceNetworkRestricted -p
1⤵
PID:1940

C:\Windows\System32\svchost.exe
C:\Windows\System32\svchost.exe -k LocalServiceNetworkRestricted -p
1⤵
PID:1948

C:\Windows\System32\svchost.exe
C:\Windows\System32\svchost.exe -k netsvcs -p -s ShellHWDetection
1⤵
PID:2040

C:\Windows\system32\svchost.exe
C:\Windows\system32\svchost.exe -k appmodel -p -s StateRepository
1⤵
PID:1032

C:\Windows\System32\spoolsv.exe
C:\Windows\System32\spoolsv.exe
1⤵
PID:2076

C:\Windows\system32\svchost.exe
C:\Windows\system32\svchost.exe -k LocalServiceNoNetworkFirewall -p
1⤵
PID:2172

C:\Windows\System32\svchost.exe
C:\Windows\System32\svchost.exe -k NetworkService -p -s LanmanWorkstation
1⤵
PID:2272

C:\Windows\System32\svchost.exe
C:\Windows\System32\svchost.exe -k LocalServiceNetworkRestricted -s RmSvc
1⤵
PID:2340

C:\Windows\system32\svchost.exe
C:\Windows\system32\svchost.exe -k NetworkServiceNetworkRestricted -p -s PolicyAgent
1⤵
PID:2548

C:\Windows\system32\svchost.exe
C:\Windows\system32\svchost.exe -k netsvcs -p -s IKEEXT
1⤵
PID:2556

C:\Windows\system32\svchost.exe
C:\Windows\system32\svchost.exe -k NetworkService -p
1⤵
PID:2616

C:\Windows\sysmon.exe
C:\Windows\sysmon.exe
1⤵
PID:2680

C:\Windows\System32\svchost.exe
C:\Windows\System32\svchost.exe -k LocalSystemNetworkRestricted -p -s TrkWks
1⤵
PID:2748

C:\Windows\system32\svchost.exe
C:\Windows\system32\svchost.exe -k netsvcs -p -s Winmgmt
1⤵
PID:2756

C:\Windows\system32\svchost.exe
C:\Windows\system32\svchost.exe -k netsvcs -p -s WpnService
1⤵
PID:2764

C:\Windows\system32\svchost.exe
C:\Windows\system32\svchost.exe -k netsvcs -p -s LanmanServer
1⤵
PID:2784

C:\Windows\system32\svchost.exe
C:\Windows\system32\svchost.exe -k UnistackSvcGroup -s CDPUserSvc
1⤵
PID:3012

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
PID:3332
- C:\Users\Admin\AppData\Local\Temp\yk1.exe
  "C:\Users\Admin\AppData\Local\Temp\yk1.exe"
  2⤵
  - Modifies firewall policy service
  - Drops file in System32 directory
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious behavior: MapViewOfSection
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2536

C:\Windows\system32\svchost.exe
C:\Windows\system32\svchost.exe -k ClipboardSvcGroup -p -s cbdhsvc
1⤵
PID:3472

C:\Windows\system32\svchost.exe
C:\Windows\system32\svchost.exe -k netsvcs -p -s Appinfo
1⤵
PID:3524

C:\Windows\system32\svchost.exe
C:\Windows\system32\svchost.exe -k UdkSvcGroup -s UdkUserSvc
1⤵
PID:3988

C:\Windows\system32\svchost.exe
C:\Windows\system32\svchost.exe -k osprivacy -p -s camsvc
1⤵
PID:4456

C:\Windows\system32\svchost.exe
C:\Windows\system32\svchost.exe -k LocalService -p -s CDPSvc
1⤵
PID:4428

C:\Windows\System32\svchost.exe
C:\Windows\System32\svchost.exe -k LocalSystemNetworkRestricted -p -s StorSvc
1⤵
PID:4040

C:\Windows\system32\svchost.exe
C:\Windows\system32\svchost.exe -k LocalServiceNetworkRestricted -p -s WinHttpAutoProxySvc
1⤵
PID:2028

C:\Program Files\Common Files\Microsoft Shared\ClickToRun\OfficeClickToRun.exe
"C:\Program Files\Common Files\Microsoft Shared\ClickToRun\OfficeClickToRun.exe" /service
1⤵
PID:3596

C:\Windows\System32\svchost.exe
C:\Windows\System32\svchost.exe -k LocalService -p -s LicenseManager
1⤵
PID:2848

C:\Windows\system32\svchost.exe
C:\Windows\system32\svchost.exe -k netsvcs -p -s wlidsvc
1⤵
PID:3184

C:\Windows\system32\svchost.exe
C:\Windows\system32\svchost.exe -k LocalServiceNetworkRestricted -p -s NgcCtnrSvc
1⤵
PID:1592

C:\Windows\SysWOW64\zebhau.exe
C:\Windows\SysWOW64\zebhau.exe
1⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:1548

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Create or Modify System Process

T1543

Windows Service

T1543.003

Privilege Escalation

Create or Modify System Process

T1543

Windows Service

T1543.003

Defense Evasion

Impair Defenses

T1562

Disable or Modify System Firewall

T1562.004

Modify Registry

T1112

Credential Access

Discovery

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Windows\SysWOW64\zebhau.exe

Filesize
184KB

MD5
76eb54ffd5a2a2e161b45a9b4e24b71b

SHA1
4031978e9de0805858233e45b9109c376dce1db1

SHA256
5ecc331e0704bb6756aaacc19bd3d356d9c6851819c18df5be8ef76ba46cde95

SHA512
119807cddeb634de800d82fa7eae3d11a40bf2732bac8e6a3a31c14600dee1abcdb945fbb5349895b945120c70a5e4fa9629c26f33cc5972ad0449489ef569d1

Download Submit
memory/1548-19-0x0000000000400000-0x0000000000433000-memory.dmp

Filesize
204KB

Download
memory/2536-3-0x0000000077555000-0x0000000077556000-memory.dmp

Filesize
4KB

Download
memory/2536-0-0x0000000000400000-0x0000000000433000-memory.dmp

Filesize
204KB

Download
memory/2536-4-0x000000007FE70000-0x000000007FE7C000-memory.dmp

Filesize
48KB

Download
memory/2536-5-0x000000007FE70000-0x000000007FE7C000-memory.dmp

Filesize
48KB

Download
memory/2536-2-0x0000000077554000-0x0000000077555000-memory.dmp

Filesize
4KB

Download
memory/2536-9-0x000000007FE60000-0x000000007FE6C000-memory.dmp

Filesize
48KB

Download
memory/2536-11-0x000000007FE60000-0x000000007FE6C000-memory.dmp

Filesize
48KB

Download
memory/2536-10-0x000000007FE60000-0x000000007FE6C000-memory.dmp

Filesize
48KB

Download
memory/2536-12-0x000000007FE70000-0x000000007FE7C000-memory.dmp

Filesize
48KB

Download
memory/2536-13-0x000000007FE60000-0x000000007FE6C000-memory.dmp

Filesize
48KB

Download
memory/2536-18-0x0000000000400000-0x0000000000433000-memory.dmp

Filesize
204KB

Download
memory/2536-1-0x000000007FE70000-0x000000007FE7C000-memory.dmp

Filesize
48KB

Download