sheetrat | 150fa4724d04ab88fb53e0ffc6e84d97c473c5a322a11642ea50f87de38c7bb0

Windows Service

Disable or Modify Tools

description	ioc	Process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Policies\Microsoft\Windows Defender\DisableAntiSpyware = "1"	Holy Check.exe

Modifies Windows Defender TamperProtection settings 3 TTPs 1 IoCs

evasion trojan

Modify Registry

Windows Service

Disable or Modify Tools

description	ioc	Process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Features\TamperProtection = "0"	Holy Check.exe

UAC bypass 3 TTPs 4 IoCs

defense_evasion trojan

Bypass User Account Control

T1548.002

Disable or Modify Tools

Modify Registry

description	ioc	Process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	Holy Check.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\ConsentPromptBehaviorAdmin = "0"	Holy Check.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\ConsentPromptBehaviorUser = "0"	Holy Check.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\PromptOnSecureDesktop = "0"	Holy Check.exe

Modifies Windows Firewall 2 TTPs 1 IoCs

defense_evasion

Windows Service

Disable or Modify System Firewall

T1562.004

pid	Process
4372	netsh.exe

Creates new service(s) 2 TTPs
persistence execution

Windows Service
T1543.003

Service Execution
T1569.002
Stops running service(s) 4 TTPs
defense_evasion execution

Windows Service
T1543.003

Impair Defenses
T1562

Service Stop
T1489

Service Execution
T1569.002

Windows security modification 2 TTPs 1 IoCs

defense_evasion trojan

Disable or Modify Tools

Modify Registry

persistence privilege_escalation

description	ioc	Process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Features\TamperProtection = "0"	Holy Check.exe

Checks whether UAC is enabled 1 TTPs 2 IoCs

defense_evasion trojan

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA	Holy Check.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	Holy Check.exe

Looks up external IP address via web service 1 TTPs 1 IoCs

Uses a legitimate IP lookup service to find the infected system's external IP.

discovery

Internet Connection Discovery

T1016.001

flow	ioc
6	ip-api.com

Launches sc.exe 3 IoCs

Sc.exe is a Windows utlilty to control services on the system.

pid	Process
5060	sc.exe
2728	sc.exe
3312	sc.exe

Event Triggered Execution: Netsh Helper DLL 1 TTPs 3 IoCs

Netsh.exe (also referred to as Netshell) is a command-line scripting utility used to interact with the network configuration of a system.

Netsh Helper DLL

T1546.007

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SOFTWARE\Microsoft\NetSh	netsh.exe
Key queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\NetSh	netsh.exe
Key value enumerated	\REGISTRY\MACHINE\SOFTWARE\Microsoft\NetSh	netsh.exe

Executes a command shell one-liner 1 TTPs 1 IoCs

Execution of a cmd.exe one-liner (/c "close" or /k "keep") is a common script/loader stage.

execution

Windows Command Shell

T1059.003

pid	Process
4156	cmd.exe

Reads the TCP/IP host and domain name from the registry 1 TTPs 4 IoCs

The configured hostname and DNS domain identify the machine and are commonly collected to profile a host before it reports in.

discovery

System Network Configuration Discovery

T1016

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Tcpip\Parameters\Domain	Holy Check.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Tcpip\Parameters\Hostname	Holy Check.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Tcpip\Parameters\Domain	Holy Check.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Tcpip\Parameters\Hostname	Holy Check.exe

Modifies data under HKEY_USERS 2 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\.DEFAULT\Software\gogoduck	Holy Check.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections	Holy Check.exe

Scheduled Task/Job: Scheduled Task 1 TTPs 6 IoCs

Schtasks is often used by malware for persistence or to perform post-infection execution.

persistence execution

Scheduled Task

pid	Process
4348	schtasks.exe
2100	schtasks.exe
3080	schtasks.exe
1536	schtasks.exe
2236	schtasks.exe
3736	schtasks.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	4296	Holy Check.exe
Token: SeDebugPrivilege	3280	Holy Check.exe

Suspicious use of WriteProcessMemory 17 IoCs

description	pid	Process	procid_target
PID 4296 wrote to memory of 4156	4296	Holy Check.exe	86
PID 4156 wrote to memory of 4372	4156	cmd.exe	88
PID 4296 wrote to memory of 5060	4296	Holy Check.exe	90
PID 4296 wrote to memory of 2728	4296	Holy Check.exe	92
PID 4296 wrote to memory of 3312	4296	Holy Check.exe	94
PID 4296 wrote to memory of 4724	4296	Holy Check.exe	97
PID 4296 wrote to memory of 4348	4296	Holy Check.exe	99
PID 4296 wrote to memory of 2160	4296	Holy Check.exe	103
PID 4296 wrote to memory of 2100	4296	Holy Check.exe	105
PID 4296 wrote to memory of 2636	4296	Holy Check.exe	107
PID 4296 wrote to memory of 3080	4296	Holy Check.exe	109
PID 4296 wrote to memory of 3940	4296	Holy Check.exe	111
PID 4296 wrote to memory of 1536	4296	Holy Check.exe	113
PID 4296 wrote to memory of 3384	4296	Holy Check.exe	115
PID 4296 wrote to memory of 2236	4296	Holy Check.exe	117
PID 4296 wrote to memory of 2948	4296	Holy Check.exe	119
PID 4296 wrote to memory of 3736	4296	Holy Check.exe	121

System policy modification 1 TTPs 6 IoCs

defense_evasion

Modify Registry

description	ioc	Process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	Holy Check.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\ConsentPromptBehaviorAdmin = "0"	Holy Check.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\ConsentPromptBehaviorUser = "0"	Holy Check.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\PromptOnSecureDesktop = "0"	Holy Check.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\FilterAdministratorToken = "0"	Holy Check.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableUIADesktopToggle = "1"	Holy Check.exe

Uses Task Scheduler COM API 1 TTPs
The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.
persistence

Query Registry
T1012

C:\Users\Admin\AppData\Local\Temp\Holy Check.exe
"C:\Users\Admin\AppData\Local\Temp\Holy Check.exe"
1⤵
- Modifies Windows Defender DisableAntiSpyware settings
- Modifies Windows Defender TamperProtection settings
- UAC bypass
- Windows security modification
- Checks whether UAC is enabled
- Reads the TCP/IP host and domain name from the registry
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
- System policy modification
PID:4296
- C:\Windows\SYSTEM32\cmd.exe
  "cmd.exe" /C netsh advfirewall firewall add rule name="QeFpSiX4SFvaSb" dir=in action=allow program="C:\Users\Admin\AppData\Local\Temp\Holy Check.exe" enable=yes & exit
  2⤵
  - Executes a command shell one-liner
  - Suspicious use of WriteProcessMemory
  PID:4156
- - C:\Windows\system32\netsh.exe
    netsh advfirewall firewall add rule name="QeFpSiX4SFvaSb" dir=in action=allow program="C:\Users\Admin\AppData\Local\Temp\Holy Check.exe" enable=yes
    3⤵
    - Modifies Windows Firewall
    - Event Triggered Execution: Netsh Helper DLL
    PID:4372
- C:\Windows\SYSTEM32\sc.exe
  "sc.exe" delete "WindowsUpdaterDefenderMicrosoft"
  2⤵
  - Launches sc.exe
  PID:5060
- C:\Windows\SYSTEM32\sc.exe
  "sc.exe" create "WindowsUpdaterDefenderMicrosoft" binPath= "C:\Users\Admin\AppData\Local\Temp\Holy Check.exe" start= auto DisplayName= "WindowsUpdaterDefenderMicrosoft"
  2⤵
  - Launches sc.exe
  PID:2728
- C:\Windows\SYSTEM32\sc.exe
  "sc.exe" start "WindowsUpdaterDefenderMicrosoft"
  2⤵
  - Launches sc.exe
  PID:3312
- C:\Windows\SYSTEM32\schtasks.exe
  "schtasks.exe" /Delete /TN "StartupAppTask_f29d721a" /F
  2⤵
  PID:4724
- C:\Windows\SYSTEM32\schtasks.exe
  "schtasks.exe" /Create /TN "StartupAppTask_f29d721a" /XML "C:\Users\Admin\AppData\Local\Temp\5c71ef23-b521-4824-b096-57de8e9a4be6.xml" /F
  2⤵
  - Scheduled Task/Job: Scheduled Task
  PID:4348
- C:\Windows\SYSTEM32\schtasks.exe
  "schtasks.exe" /Delete /TN "Intel PTT EK Recertification_6fb9711e" /F
  2⤵
  PID:2160
- C:\Windows\SYSTEM32\schtasks.exe
  "schtasks.exe" /Create /TN "Intel PTT EK Recertification_6fb9711e" /XML "C:\Users\Admin\AppData\Local\Temp\1095f100-6217-452f-bbea-e1cc148aedb1.xml" /F
  2⤵
  - Scheduled Task/Job: Scheduled Task
  PID:2100
- C:\Windows\SYSTEM32\schtasks.exe
  "schtasks.exe" /Delete /TN "NvDriverUpdateCheckDaily_{B2FE1952-0186-46C3-BAEC-A80AA35AC5B8}_4375a64b" /F
  2⤵
  PID:2636
- C:\Windows\SYSTEM32\schtasks.exe
  "schtasks.exe" /Create /TN "NvDriverUpdateCheckDaily_{B2FE1952-0186-46C3-BAEC-A80AA35AC5B8}_4375a64b" /XML "C:\Users\Admin\AppData\Local\Temp\2b9c3f94-060d-40b3-afb7-0192f49760ab.xml" /F
  2⤵
  - Scheduled Task/Job: Scheduled Task
  PID:3080
- C:\Windows\SYSTEM32\schtasks.exe
  "schtasks.exe" /Delete /TN "User_Feed_Synchronization-d3814b62-c51b-4950-b16f-505ea33b26cc" /F
  2⤵
  PID:3940
- C:\Windows\SYSTEM32\schtasks.exe
  "schtasks.exe" /Create /TN "User_Feed_Synchronization-d3814b62-c51b-4950-b16f-505ea33b26cc" /XML "C:\Users\Admin\AppData\Local\Temp\f3d2078d-904b-4138-b46e-45c7949e3d68.xml" /F
  2⤵
  - Scheduled Task/Job: Scheduled Task
  PID:1536
- C:\Windows\SYSTEM32\schtasks.exe
  "schtasks.exe" /Delete /TN "StartupAppTask_0ecf99d2" /F
  2⤵
  PID:3384
- C:\Windows\SYSTEM32\schtasks.exe
  "schtasks.exe" /Create /TN "StartupAppTask_0ecf99d2" /XML "C:\Users\Admin\AppData\Local\Temp\06474d76-b640-4e92-98d5-4cd455ff1643.xml" /F
  2⤵
  - Scheduled Task/Job: Scheduled Task
  PID:2236
- C:\Windows\SYSTEM32\schtasks.exe
  "schtasks.exe" /Delete /TN "NvTmMon_{B2FE1952-0186-46C3-BAEC-A80AA35AC5B8}_88078691" /F
  2⤵
  PID:2948
- C:\Windows\SYSTEM32\schtasks.exe
  "schtasks.exe" /Create /TN "NvTmMon_{B2FE1952-0186-46C3-BAEC-A80AA35AC5B8}_88078691" /XML "C:\Users\Admin\AppData\Local\Temp\2239e240-4b65-467a-8d1c-e638dbcaddab.xml" /F
  2⤵
  - Scheduled Task/Job: Scheduled Task
  PID:3736

C:\Users\Admin\AppData\Local\Temp\Holy Check.exe
"C:\Users\Admin\AppData\Local\Temp\Holy Check.exe"
1⤵
- Reads the TCP/IP host and domain name from the registry
- Modifies data under HKEY_USERS
- Suspicious use of AdjustPrivilegeToken
PID:3280

Network

MITRE ATT&CK Enterprise v16

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

Windows Command Shell

T1059.003

Scheduled Task/Job

T1053

Scheduled Task

System Services

T1569

Service Execution

T1569.002

Persistence

Create or Modify System Process

T1543

Windows Service

Event Triggered Execution

T1546

Netsh Helper DLL

T1546.007

Scheduled Task/Job

T1053

Scheduled Task

Privilege Escalation

Abuse Elevation Control Mechanism

T1548

Bypass User Account Control

T1548.002

Create or Modify System Process

T1543

Windows Service

Event Triggered Execution

T1546

Netsh Helper DLL

T1546.007

Scheduled Task/Job

T1053

Scheduled Task

Defense Evasion

Abuse Elevation Control Mechanism

T1548

Bypass User Account Control

T1548.002

Impair Defenses

T1562

Disable or Modify System Firewall

T1562.004

Disable or Modify Tools

Modify Registry