betabot | e5b01cd00c400a4587db5d160b1380baf51684deed80b49934bcaf00bd9796aa

Windows Service

T1543.003

Processes:

explorer.exe

description	ioc	process
Key created	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile	explorer.exe
Set value (int)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\EnableFirewall = "0"	explorer.exe
Key created	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\PublicProfile	explorer.exe
Set value (int)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\PublicProfile\EnableFirewall = "0"	explorer.exe

SmokeLoader
Modular backdoor trojan in use since 2014.
trojan backdoor smokeloader

Sets file execution options in registry 2 TTPs 4 IoCs

persistence

Registry Run Keys / Startup Folder

Modify Registry

Processes:

explorer.exe6E74.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\rstrui.exe\Debugger = "qpfnm.exe"	explorer.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\37s1u11g77ou.exe	6E74.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\37s1u11g77ou.exe\DisableExceptionChainValidation	6E74.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\rstrui.exe	explorer.exe

Checks BIOS information in registry 2 TTPs 1 IoCs
BIOS information is often read in order to detect sandboxing environments.

Query Registry
T1012

System Information Discovery
T1082

Processes:

explorer.exe

description ioc process

Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion explorer.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

Processes:

749F.exe

description ioc process

Key value queried \REGISTRY\USER\S-1-5-21-983843758-932321429-1636175382-1000\Control Panel\International\Geo\Nation 749F.exe
Deletes itself 1 IoCs

Processes:

pid process

3352
Executes dropped EXE 3 IoCs

Processes:

6E74.exe749F.exeWindowsUpdater.exe

pid process

876 6E74.exe
4868 749F.exe
1916 WindowsUpdater.exe
Loads dropped DLL 2 IoCs

Processes:

WindowsUpdater.exe

pid process

1916 WindowsUpdater.exe
1916 WindowsUpdater.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	explorer.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-983843758-932321429-1636175382-1000\Control Panel\International\Geo\Nation	749F.exe

pid	process
3352

pid	process
876	6E74.exe
4868	749F.exe
1916	WindowsUpdater.exe

pid	process
1916	WindowsUpdater.exe
1916	WindowsUpdater.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

Modify Registry

Processes:

explorer.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-983843758-932321429-1636175382-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\RunOnce\Java Updater = "C:\\ProgramData\\Java Updater\\37s1u11g77ou.exe"	explorer.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-983843758-932321429-1636175382-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Java Updater = "\"C:\\ProgramData\\Java Updater\\37s1u11g77ou.exe\""	explorer.exe

Checks whether UAC is enabled 1 TTPs 1 IoCs
evasion trojan

System Information Discovery
T1082

Processes:

6E74.exe

description ioc process

Key value queried \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA 6E74.exe
Suspicious use of NtSetInformationThreadHideFromDebugger 8 IoCs

Processes:

6E74.exeexplorer.exe

pid process

876 6E74.exe
4048 explorer.exe
4048 explorer.exe
4048 explorer.exe
4048 explorer.exe
4048 explorer.exe
4048 explorer.exe
4048 explorer.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082
Program crash 1 IoCs

Processes:

WerFault.exe

pid pid_target process target process

836 4048 WerFault.exe explorer.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA	6E74.exe

pid	process
876	6E74.exe
4048	explorer.exe
4048	explorer.exe
4048	explorer.exe
4048	explorer.exe
4048	explorer.exe
4048	explorer.exe
4048	explorer.exe

pid	pid_target	process	target process
836	4048	WerFault.exe	explorer.exe

NSIS installer 8 IoCs

installer

Processes:

resource	yara_rule
C:\Users\Admin\AppData\Local\Temp\749F.exe	nsis_installer_2
C:\Users\Admin\AppData\Local\Temp\749F.exe	nsis_installer_2
C:\Users\Admin\AppData\Local\Temp\WindowsUpdater.exe	nsis_installer_1
C:\Users\Admin\AppData\Local\Temp\WindowsUpdater.exe	nsis_installer_2
C:\Users\Admin\AppData\Local\Temp\WindowsUpdater.exe	nsis_installer_1
C:\Users\Admin\AppData\Local\Temp\WindowsUpdater.exe	nsis_installer_2
C:\Users\Admin\AppData\Local\Temp\WindowsUpdater.exe	nsis_installer_1
C:\Users\Admin\AppData\Local\Temp\WindowsUpdater.exe	nsis_installer_2

Checks SCSI registry key(s) 3 TTPs 3 IoCs

SCSI information is often read in order to detect sandboxing environments.

Query Registry

Peripheral Device Discovery

T1120

System Information Discovery

Processes:

e5b01cd00c400a4587db5d160b1380baf51684deed80b49934bcaf00bd9796aa.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	e5b01cd00c400a4587db5d160b1380baf51684deed80b49934bcaf00bd9796aa.exe
Key queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	e5b01cd00c400a4587db5d160b1380baf51684deed80b49934bcaf00bd9796aa.exe
Key enumerated	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	e5b01cd00c400a4587db5d160b1380baf51684deed80b49934bcaf00bd9796aa.exe

Checks processor information in registry 2 TTPs 4 IoCs

Processor information is often read in order to detect sandboxing environments.

Query Registry

System Information Discovery

Processes:

6E74.exeexplorer.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	6E74.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	6E74.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	explorer.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	explorer.exe

Enumerates system info in registry 2 TTPs 2 IoCs

Query Registry

System Information Discovery

Processes:

explorer.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS	explorer.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemManufacturer	explorer.exe

Modifies Internet Explorer Protected Mode 1 TTPs 4 IoCs

Modify Registry

Processes:

explorer.exe

description	ioc	process
Set value (int)	\REGISTRY\USER\S-1-5-21-983843758-932321429-1636175382-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\1\2500 = "3"	explorer.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-983843758-932321429-1636175382-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\2\2500 = "3"	explorer.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-983843758-932321429-1636175382-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\3\2500 = "3"	explorer.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-983843758-932321429-1636175382-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\4\2500 = "3"	explorer.exe

Modifies Internet Explorer Protected Mode Banner 1 TTPs 1 IoCs

Modify Registry

Processes:

explorer.exe

description	ioc	process
Set value (int)	\REGISTRY\USER\S-1-5-21-983843758-932321429-1636175382-1000\SOFTWARE\Microsoft\Internet Explorer\Main\NoProtectedModeBanner = "1"	explorer.exe

Modifies Internet Explorer settings 1 TTPs 1 IoCs
adware spyware

Modify Registry
T1112

Processes:

explorer.exe

description ioc process

Key created \REGISTRY\USER\S-1-5-21-983843758-932321429-1636175382-1000\Software\Microsoft\Internet Explorer\Main explorer.exe

description	ioc	process
Key created	\REGISTRY\USER\S-1-5-21-983843758-932321429-1636175382-1000\Software\Microsoft\Internet Explorer\Main	explorer.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

Processes:

e5b01cd00c400a4587db5d160b1380baf51684deed80b49934bcaf00bd9796aa.exe

pid	process
2928	e5b01cd00c400a4587db5d160b1380baf51684deed80b49934bcaf00bd9796aa.exe
2928	e5b01cd00c400a4587db5d160b1380baf51684deed80b49934bcaf00bd9796aa.exe
3352
3352
3352
3352
3352
3352
3352
3352
3352
3352
3352
3352
3352
3352
3352
3352
3352
3352
3352
3352
3352
3352
3352
3352
3352
3352
3352
3352
3352
3352
3352
3352
3352
3352
3352
3352
3352
3352
3352
3352
3352
3352
3352
3352
3352
3352
3352
3352
3352
3352
3352
3352
3352
3352
3352
3352
3352
3352
3352
3352
3352
3352

Suspicious behavior: MapViewOfSection 3 IoCs

Processes:

e5b01cd00c400a4587db5d160b1380baf51684deed80b49934bcaf00bd9796aa.exe6E74.exe

pid process

2928 e5b01cd00c400a4587db5d160b1380baf51684deed80b49934bcaf00bd9796aa.exe
876 6E74.exe
876 6E74.exe

Suspicious use of AdjustPrivilegeToken 32 IoCs

Processes:

6E74.exeexplorer.exe

description	pid	process
Token: SeDebugPrivilege	876	6E74.exe
Token: SeRestorePrivilege	876	6E74.exe
Token: SeBackupPrivilege	876	6E74.exe
Token: SeLoadDriverPrivilege	876	6E74.exe
Token: SeCreatePagefilePrivilege	876	6E74.exe
Token: SeShutdownPrivilege	876	6E74.exe
Token: SeTakeOwnershipPrivilege	876	6E74.exe
Token: SeChangeNotifyPrivilege	876	6E74.exe
Token: SeCreateTokenPrivilege	876	6E74.exe
Token: SeMachineAccountPrivilege	876	6E74.exe
Token: SeSecurityPrivilege	876	6E74.exe
Token: SeAssignPrimaryTokenPrivilege	876	6E74.exe
Token: SeCreateGlobalPrivilege	876	6E74.exe
Token: 33	876	6E74.exe
Token: SeDebugPrivilege	4048	explorer.exe
Token: SeRestorePrivilege	4048	explorer.exe
Token: SeBackupPrivilege	4048	explorer.exe
Token: SeLoadDriverPrivilege	4048	explorer.exe
Token: SeCreatePagefilePrivilege	4048	explorer.exe
Token: SeShutdownPrivilege	4048	explorer.exe
Token: SeTakeOwnershipPrivilege	4048	explorer.exe
Token: SeChangeNotifyPrivilege	4048	explorer.exe
Token: SeCreateTokenPrivilege	4048	explorer.exe
Token: SeMachineAccountPrivilege	4048	explorer.exe
Token: SeSecurityPrivilege	4048	explorer.exe
Token: SeAssignPrimaryTokenPrivilege	4048	explorer.exe
Token: SeCreateGlobalPrivilege	4048	explorer.exe
Token: 33	4048	explorer.exe
Token: SeShutdownPrivilege	3352
Token: SeCreatePagefilePrivilege	3352
Token: SeShutdownPrivilege	3352
Token: SeCreatePagefilePrivilege	3352

Suspicious use of UnmapMainImage 1 IoCs

Processes:

pid process

3352

pid	process
3352

Suspicious use of WriteProcessMemory 12 IoCs

Processes:

6E74.exe749F.exe

description	pid	process	target process
PID 3352 wrote to memory of 876	3352		6E74.exe
PID 3352 wrote to memory of 876	3352		6E74.exe
PID 3352 wrote to memory of 876	3352		6E74.exe
PID 3352 wrote to memory of 4868	3352		749F.exe
PID 3352 wrote to memory of 4868	3352		749F.exe
PID 3352 wrote to memory of 4868	3352		749F.exe
PID 876 wrote to memory of 4048	876	6E74.exe	explorer.exe
PID 876 wrote to memory of 4048	876	6E74.exe	explorer.exe
PID 876 wrote to memory of 4048	876	6E74.exe	explorer.exe
PID 4868 wrote to memory of 1916	4868	749F.exe	WindowsUpdater.exe
PID 4868 wrote to memory of 1916	4868	749F.exe	WindowsUpdater.exe
PID 4868 wrote to memory of 1916	4868	749F.exe	WindowsUpdater.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\e5b01cd00c400a4587db5d160b1380baf51684deed80b49934bcaf00bd9796aa.exe
"C:\Users\Admin\AppData\Local\Temp\e5b01cd00c400a4587db5d160b1380baf51684deed80b49934bcaf00bd9796aa.exe"
1⤵
- Checks SCSI registry key(s)
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
PID:2928

C:\Users\Admin\AppData\Local\Temp\6E74.exe
C:\Users\Admin\AppData\Local\Temp\6E74.exe
1⤵
- Sets file execution options in registry
- Executes dropped EXE
- Checks whether UAC is enabled
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Checks processor information in registry
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:876
- C:\Windows\SysWOW64\explorer.exe
  C:\Windows\SysWOW64\explorer.exe
  2⤵
  - Modifies firewall policy service
  - Sets file execution options in registry
  - Checks BIOS information in registry
  - Adds Run key to start application
  - Suspicious use of NtSetInformationThreadHideFromDebugger
  - Checks processor information in registry
  - Enumerates system info in registry
  - Modifies Internet Explorer Protected Mode
  - Modifies Internet Explorer Protected Mode Banner
  - Modifies Internet Explorer settings
  - Suspicious use of AdjustPrivilegeToken
  PID:4048
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 4048 -s 1132
    3⤵
    - Program crash
    PID:836

C:\Users\Admin\AppData\Local\Temp\749F.exe
C:\Users\Admin\AppData\Local\Temp\749F.exe
1⤵
- Checks computer location settings
- Executes dropped EXE
- Suspicious use of WriteProcessMemory
PID:4868
- C:\Users\Admin\AppData\Local\Temp\WindowsUpdater.exe
  "C:\Users\Admin\AppData\Local\Temp\WindowsUpdater.exe"
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  PID:1916

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 4048 -ip 4048
1⤵
PID:1748

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

Create or Modify System Process

T1543

Windows Service

T1543.003

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

Create or Modify System Process

T1543

Windows Service

T1543.003

Defense Evasion

Modify Registry

Credential Access

Discovery

Peripheral Device Discovery

T1120

Query Registry

System Information Discovery