betabot | 0faa7c27d8cedbb19af0586a236ce4eca6b151509e526bedcc970606e391ce74

Windows Service

T1543.003

Processes:

explorer.exe

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

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:

A856.exeexplorer.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\51933m555o53u7.exe\DisableExceptionChainValidation	A856.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\rstrui.exe	explorer.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\rstrui.exe\Debugger = "vxv.exe"	explorer.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\51933m555o53u7.exe	A856.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:

AD29.exe

description ioc process

Key value queried \REGISTRY\USER\S-1-5-21-1232405761-1209240240-3206092754-1000\Control Panel\International\Geo\Nation AD29.exe
Deletes itself 1 IoCs

Processes:

pid process

3396
Executes dropped EXE 3 IoCs

Processes:

A856.exeAD29.exeWindowsUpdater.exe

pid process

2700 A856.exe
2676 AD29.exe
3212 WindowsUpdater.exe
Loads dropped DLL 2 IoCs

Processes:

WindowsUpdater.exe

pid process

3212 WindowsUpdater.exe
3212 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-1-5-21-1232405761-1209240240-3206092754-1000\Control Panel\International\Geo\Nation	AD29.exe

pid	process
3396

pid	process
2700	A856.exe
2676	AD29.exe
3212	WindowsUpdater.exe

pid	process
3212	WindowsUpdater.exe
3212	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-1-5-21-1232405761-1209240240-3206092754-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\RunOnce\Java Updater = "C:\\ProgramData\\Java Updater\\51933m555o53u7.exe"	explorer.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1232405761-1209240240-3206092754-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Java Updater = "\"C:\\ProgramData\\Java Updater\\51933m555o53u7.exe\""	explorer.exe

Checks whether UAC is enabled 1 TTPs 1 IoCs
evasion trojan

System Information Discovery
T1082

Processes:

A856.exe

description ioc process

Key value queried \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA A856.exe
Suspicious use of NtSetInformationThreadHideFromDebugger 8 IoCs

Processes:

A856.exeexplorer.exe

pid process

2700 A856.exe
1932 explorer.exe
1932 explorer.exe
1932 explorer.exe
1932 explorer.exe
1932 explorer.exe
1932 explorer.exe
1932 explorer.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

description	ioc	process
Key value queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA	A856.exe

pid	process
2700	A856.exe
1932	explorer.exe
1932	explorer.exe
1932	explorer.exe
1932	explorer.exe
1932	explorer.exe
1932	explorer.exe
1932	explorer.exe

Program crash 2 IoCs

Processes:

WerFault.exeWerFault.exe

pid	pid_target	process	target process
3860	864	WerFault.exe	0faa7c27d8cedbb19af0586a236ce4eca6b151509e526bedcc970606e391ce74.exe
3248	1932	WerFault.exe	explorer.exe

NSIS installer 6 IoCs

installer

Processes:

resource	yara_rule
C:\Users\Admin\AppData\Local\Temp\AD29.exe	nsis_installer_2
C:\Users\Admin\AppData\Local\Temp\AD29.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

T1012

Peripheral Device Discovery

T1120

System Information Discovery

Processes:

0faa7c27d8cedbb19af0586a236ce4eca6b151509e526bedcc970606e391ce74.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	0faa7c27d8cedbb19af0586a236ce4eca6b151509e526bedcc970606e391ce74.exe
Key queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	0faa7c27d8cedbb19af0586a236ce4eca6b151509e526bedcc970606e391ce74.exe
Key enumerated	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	0faa7c27d8cedbb19af0586a236ce4eca6b151509e526bedcc970606e391ce74.exe

Checks processor information in registry 2 TTPs 4 IoCs

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

Query Registry

T1012

System Information Discovery

Processes:

A856.exeexplorer.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	A856.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	A856.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

T1012

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-1-5-21-1232405761-1209240240-3206092754-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\2\2500 = "3"	explorer.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-1232405761-1209240240-3206092754-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\3\2500 = "3"	explorer.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-1232405761-1209240240-3206092754-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\4\2500 = "3"	explorer.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-1232405761-1209240240-3206092754-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\1\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-1-5-21-1232405761-1209240240-3206092754-1000\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-1-5-21-1232405761-1209240240-3206092754-1000\Software\Microsoft\Internet Explorer\Main explorer.exe

description	ioc	process
Key created	\REGISTRY\USER\S-1-5-21-1232405761-1209240240-3206092754-1000\Software\Microsoft\Internet Explorer\Main	explorer.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

Processes:

0faa7c27d8cedbb19af0586a236ce4eca6b151509e526bedcc970606e391ce74.exe

pid	process
864	0faa7c27d8cedbb19af0586a236ce4eca6b151509e526bedcc970606e391ce74.exe
864	0faa7c27d8cedbb19af0586a236ce4eca6b151509e526bedcc970606e391ce74.exe
3396
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3396
3396

Suspicious behavior: MapViewOfSection 3 IoCs

Processes:

0faa7c27d8cedbb19af0586a236ce4eca6b151509e526bedcc970606e391ce74.exeA856.exe

pid process

864 0faa7c27d8cedbb19af0586a236ce4eca6b151509e526bedcc970606e391ce74.exe
2700 A856.exe
2700 A856.exe

Suspicious use of AdjustPrivilegeToken 32 IoCs

Processes:

A856.exeexplorer.exe

description	pid	process
Token: SeShutdownPrivilege	3396
Token: SeCreatePagefilePrivilege	3396
Token: SeDebugPrivilege	2700	A856.exe
Token: SeRestorePrivilege	2700	A856.exe
Token: SeBackupPrivilege	2700	A856.exe
Token: SeLoadDriverPrivilege	2700	A856.exe
Token: SeCreatePagefilePrivilege	2700	A856.exe
Token: SeShutdownPrivilege	2700	A856.exe
Token: SeTakeOwnershipPrivilege	2700	A856.exe
Token: SeChangeNotifyPrivilege	2700	A856.exe
Token: SeCreateTokenPrivilege	2700	A856.exe
Token: SeMachineAccountPrivilege	2700	A856.exe
Token: SeSecurityPrivilege	2700	A856.exe
Token: SeAssignPrimaryTokenPrivilege	2700	A856.exe
Token: SeCreateGlobalPrivilege	2700	A856.exe
Token: 33	2700	A856.exe
Token: SeDebugPrivilege	1932	explorer.exe
Token: SeRestorePrivilege	1932	explorer.exe
Token: SeBackupPrivilege	1932	explorer.exe
Token: SeLoadDriverPrivilege	1932	explorer.exe
Token: SeCreatePagefilePrivilege	1932	explorer.exe
Token: SeShutdownPrivilege	1932	explorer.exe
Token: SeTakeOwnershipPrivilege	1932	explorer.exe
Token: SeChangeNotifyPrivilege	1932	explorer.exe
Token: SeCreateTokenPrivilege	1932	explorer.exe
Token: SeMachineAccountPrivilege	1932	explorer.exe
Token: SeSecurityPrivilege	1932	explorer.exe
Token: SeAssignPrimaryTokenPrivilege	1932	explorer.exe
Token: SeCreateGlobalPrivilege	1932	explorer.exe
Token: 33	1932	explorer.exe
Token: SeShutdownPrivilege	3396
Token: SeCreatePagefilePrivilege	3396

Suspicious use of WriteProcessMemory 12 IoCs

Processes:

A856.exeAD29.exe

description	pid	process	target process
PID 3396 wrote to memory of 2700	3396		A856.exe
PID 3396 wrote to memory of 2700	3396		A856.exe
PID 3396 wrote to memory of 2700	3396		A856.exe
PID 2700 wrote to memory of 1932	2700	A856.exe	explorer.exe
PID 2700 wrote to memory of 1932	2700	A856.exe	explorer.exe
PID 2700 wrote to memory of 1932	2700	A856.exe	explorer.exe
PID 3396 wrote to memory of 2676	3396		AD29.exe
PID 3396 wrote to memory of 2676	3396		AD29.exe
PID 3396 wrote to memory of 2676	3396		AD29.exe
PID 2676 wrote to memory of 3212	2676	AD29.exe	WindowsUpdater.exe
PID 2676 wrote to memory of 3212	2676	AD29.exe	WindowsUpdater.exe
PID 2676 wrote to memory of 3212	2676	AD29.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\0faa7c27d8cedbb19af0586a236ce4eca6b151509e526bedcc970606e391ce74.exe
"C:\Users\Admin\AppData\Local\Temp\0faa7c27d8cedbb19af0586a236ce4eca6b151509e526bedcc970606e391ce74.exe"
1⤵
- Checks SCSI registry key(s)
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
PID:864
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 864 -s 372
  2⤵
  - Program crash
  PID:3860

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 464 -p 864 -ip 864
1⤵
PID:2528

C:\Users\Admin\AppData\Local\Temp\A856.exe
C:\Users\Admin\AppData\Local\Temp\A856.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:2700
- 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:1932
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 1932 -s 1136
    3⤵
    - Program crash
    PID:3248

C:\Users\Admin\AppData\Local\Temp\AD29.exe
C:\Users\Admin\AppData\Local\Temp\AD29.exe
1⤵
- Checks computer location settings
- Executes dropped EXE
- Suspicious use of WriteProcessMemory
PID:2676
- C:\Users\Admin\AppData\Local\Temp\WindowsUpdater.exe
  "C:\Users\Admin\AppData\Local\Temp\WindowsUpdater.exe"
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  PID:3212

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 496 -p 1932 -ip 1932
1⤵
PID:3184

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

6

Credential Access

Discovery

Peripheral Device Discovery

Query Registry

System Information Discovery

7