betabot | 9f5f03cbcbc7210125928f059fc4bee2618b151b98b468f703c5207d57d0e3c1

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:

6750.exeexplorer.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\5s35u371.exe\DisableExceptionChainValidation	6750.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 = "ozjnkv.exe"	explorer.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\5s35u371.exe	6750.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:

6F40.exe

description ioc process

Key value queried \REGISTRY\USER\S-1-5-21-3073191680-435865314-2862784915-1000\Control Panel\International\Geo\Nation 6F40.exe
Deletes itself 1 IoCs

Processes:

pid process

3520
Executes dropped EXE 5 IoCs

Processes:

6750.exe6F40.exeWindowsUpdater.exefrecgfvfrecgfv

pid process

4120 6750.exe
2708 6F40.exe
2300 WindowsUpdater.exe
2084 frecgfv
2656 frecgfv
Loads dropped DLL 2 IoCs

Processes:

WindowsUpdater.exe

pid process

2300 WindowsUpdater.exe
2300 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-1-5-21-3073191680-435865314-2862784915-1000\Control Panel\International\Geo\Nation	6F40.exe

pid	process
3520

pid	process
4120	6750.exe
2708	6F40.exe
2300	WindowsUpdater.exe
2084	frecgfv
2656	frecgfv

pid	process
2300	WindowsUpdater.exe
2300	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-1-5-21-3073191680-435865314-2862784915-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\RunOnce\Java Updater = "C:\\ProgramData\\Java Updater\\5s35u371.exe"	explorer.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3073191680-435865314-2862784915-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Java Updater = "\"C:\\ProgramData\\Java Updater\\5s35u371.exe\""	explorer.exe

Checks whether UAC is enabled 1 TTPs 1 IoCs
evasion trojan

System Information Discovery
T1082

Processes:

6750.exe

description ioc process

Key value queried \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA 6750.exe
Suspicious use of NtSetInformationThreadHideFromDebugger 8 IoCs

Processes:

6750.exeexplorer.exe

pid process

4120 6750.exe
2236 explorer.exe
2236 explorer.exe
2236 explorer.exe
2236 explorer.exe
2236 explorer.exe
2236 explorer.exe
2236 explorer.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA	6750.exe

pid	process
4120	6750.exe
2236	explorer.exe
2236	explorer.exe
2236	explorer.exe
2236	explorer.exe
2236	explorer.exe
2236	explorer.exe
2236	explorer.exe

Suspicious use of SetThreadContext 2 IoCs

Processes:

6eb66417d2421609dd31a36683513601.exefrecgfv

description	pid	process	target process
PID 4284 set thread context of 4128	4284	6eb66417d2421609dd31a36683513601.exe	6eb66417d2421609dd31a36683513601.exe
PID 2084 set thread context of 2656	2084	frecgfv	frecgfv

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

2900 2236 WerFault.exe explorer.exe

pid	pid_target	process	target process
2900	2236	WerFault.exe	explorer.exe

NSIS installer 3 IoCs

installer

Processes:

resource	yara_rule
C:\Users\Admin\AppData\Local\Temp\6F40.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 6 IoCs

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

Query Registry

Peripheral Device Discovery

T1120

System Information Discovery

Processes:

frecgfv6eb66417d2421609dd31a36683513601.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	frecgfv
Key queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	frecgfv
Key enumerated	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	frecgfv
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	6eb66417d2421609dd31a36683513601.exe
Key queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	6eb66417d2421609dd31a36683513601.exe
Key enumerated	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	6eb66417d2421609dd31a36683513601.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:

explorer.exe6750.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	explorer.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	explorer.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	6750.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	6750.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-1-5-21-3073191680-435865314-2862784915-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\4\2500 = "3"	explorer.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-3073191680-435865314-2862784915-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\1\2500 = "3"	explorer.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-3073191680-435865314-2862784915-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\2\2500 = "3"	explorer.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-3073191680-435865314-2862784915-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\3\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-1-5-21-3073191680-435865314-2862784915-1000\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-1-5-21-3073191680-435865314-2862784915-1000\Software\Microsoft\Internet Explorer\Main explorer.exe

description	ioc	process
Key created	\REGISTRY\USER\S-1-5-21-3073191680-435865314-2862784915-1000\Software\Microsoft\Internet Explorer\Main	explorer.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

Processes:

6eb66417d2421609dd31a36683513601.exe

pid	process
4128	6eb66417d2421609dd31a36683513601.exe
4128	6eb66417d2421609dd31a36683513601.exe
3520
3520
3520
3520
3520
3520
3520
3520
3520
3520
3520
3520
3520
3520
3520
3520
3520
3520
3520
3520
3520
3520
3520
3520
3520
3520
3520
3520
3520
3520
3520
3520
3520
3520
3520
3520
3520
3520
3520
3520
3520
3520
3520
3520
3520
3520
3520
3520
3520
3520
3520
3520
3520
3520
3520
3520
3520
3520
3520
3520
3520
3520

Suspicious behavior: MapViewOfSection 5 IoCs

Processes:

6eb66417d2421609dd31a36683513601.exe6750.exeexplorer.exefrecgfv

pid process

4128 6eb66417d2421609dd31a36683513601.exe
4120 6750.exe
4120 6750.exe
2236 explorer.exe
2656 frecgfv

Suspicious use of AdjustPrivilegeToken 32 IoCs

Processes:

6750.exeexplorer.exe

description	pid	process
Token: SeDebugPrivilege	4120	6750.exe
Token: SeRestorePrivilege	4120	6750.exe
Token: SeBackupPrivilege	4120	6750.exe
Token: SeLoadDriverPrivilege	4120	6750.exe
Token: SeCreatePagefilePrivilege	4120	6750.exe
Token: SeShutdownPrivilege	4120	6750.exe
Token: SeTakeOwnershipPrivilege	4120	6750.exe
Token: SeChangeNotifyPrivilege	4120	6750.exe
Token: SeCreateTokenPrivilege	4120	6750.exe
Token: SeMachineAccountPrivilege	4120	6750.exe
Token: SeSecurityPrivilege	4120	6750.exe
Token: SeAssignPrimaryTokenPrivilege	4120	6750.exe
Token: SeCreateGlobalPrivilege	4120	6750.exe
Token: 33	4120	6750.exe
Token: SeDebugPrivilege	2236	explorer.exe
Token: SeRestorePrivilege	2236	explorer.exe
Token: SeBackupPrivilege	2236	explorer.exe
Token: SeLoadDriverPrivilege	2236	explorer.exe
Token: SeCreatePagefilePrivilege	2236	explorer.exe
Token: SeShutdownPrivilege	2236	explorer.exe
Token: SeTakeOwnershipPrivilege	2236	explorer.exe
Token: SeChangeNotifyPrivilege	2236	explorer.exe
Token: SeCreateTokenPrivilege	2236	explorer.exe
Token: SeMachineAccountPrivilege	2236	explorer.exe
Token: SeSecurityPrivilege	2236	explorer.exe
Token: SeAssignPrimaryTokenPrivilege	2236	explorer.exe
Token: SeCreateGlobalPrivilege	2236	explorer.exe
Token: 33	2236	explorer.exe
Token: SeShutdownPrivilege	3520
Token: SeCreatePagefilePrivilege	3520
Token: SeShutdownPrivilege	3520
Token: SeCreatePagefilePrivilege	3520

Suspicious use of UnmapMainImage 1 IoCs

Processes:

pid process

3520

pid	process
3520

Suspicious use of WriteProcessMemory 26 IoCs

Processes:

6eb66417d2421609dd31a36683513601.exe6750.exe6F40.exefrecgfvexplorer.exe

description	pid	process	target process
PID 4284 wrote to memory of 4128	4284	6eb66417d2421609dd31a36683513601.exe	6eb66417d2421609dd31a36683513601.exe
PID 4284 wrote to memory of 4128	4284	6eb66417d2421609dd31a36683513601.exe	6eb66417d2421609dd31a36683513601.exe
PID 4284 wrote to memory of 4128	4284	6eb66417d2421609dd31a36683513601.exe	6eb66417d2421609dd31a36683513601.exe
PID 4284 wrote to memory of 4128	4284	6eb66417d2421609dd31a36683513601.exe	6eb66417d2421609dd31a36683513601.exe
PID 4284 wrote to memory of 4128	4284	6eb66417d2421609dd31a36683513601.exe	6eb66417d2421609dd31a36683513601.exe
PID 4284 wrote to memory of 4128	4284	6eb66417d2421609dd31a36683513601.exe	6eb66417d2421609dd31a36683513601.exe
PID 3520 wrote to memory of 4120	3520		6750.exe
PID 3520 wrote to memory of 4120	3520		6750.exe
PID 3520 wrote to memory of 4120	3520		6750.exe
PID 3520 wrote to memory of 2708	3520		6F40.exe
PID 3520 wrote to memory of 2708	3520		6F40.exe
PID 3520 wrote to memory of 2708	3520		6F40.exe
PID 4120 wrote to memory of 2236	4120	6750.exe	explorer.exe
PID 4120 wrote to memory of 2236	4120	6750.exe	explorer.exe
PID 4120 wrote to memory of 2236	4120	6750.exe	explorer.exe
PID 2708 wrote to memory of 2300	2708	6F40.exe	WindowsUpdater.exe
PID 2708 wrote to memory of 2300	2708	6F40.exe	WindowsUpdater.exe
PID 2708 wrote to memory of 2300	2708	6F40.exe	WindowsUpdater.exe
PID 2084 wrote to memory of 2656	2084	frecgfv	frecgfv
PID 2084 wrote to memory of 2656	2084	frecgfv	frecgfv
PID 2084 wrote to memory of 2656	2084	frecgfv	frecgfv
PID 2084 wrote to memory of 2656	2084	frecgfv	frecgfv
PID 2084 wrote to memory of 2656	2084	frecgfv	frecgfv
PID 2084 wrote to memory of 2656	2084	frecgfv	frecgfv
PID 2236 wrote to memory of 2656	2236	explorer.exe	frecgfv
PID 2236 wrote to memory of 2656	2236	explorer.exe	frecgfv

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\6eb66417d2421609dd31a36683513601.exe
"C:\Users\Admin\AppData\Local\Temp\6eb66417d2421609dd31a36683513601.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4284

C:\Users\Admin\AppData\Local\Temp\6eb66417d2421609dd31a36683513601.exe
"C:\Users\Admin\AppData\Local\Temp\6eb66417d2421609dd31a36683513601.exe"
2⤵
- Checks SCSI registry key(s)
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
PID:4128

C:\Users\Admin\AppData\Local\Temp\6750.exe
C:\Users\Admin\AppData\Local\Temp\6750.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:4120

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 behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2236

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 2236 -s 1128
3⤵
- Program crash
PID:2900

C:\Users\Admin\AppData\Local\Temp\6F40.exe
C:\Users\Admin\AppData\Local\Temp\6F40.exe
1⤵
- Checks computer location settings
- Executes dropped EXE
- Suspicious use of WriteProcessMemory
PID:2708

C:\Users\Admin\AppData\Local\Temp\WindowsUpdater.exe
"C:\Users\Admin\AppData\Local\Temp\WindowsUpdater.exe"
2⤵
- Executes dropped EXE
- Loads dropped DLL
PID:2300

C:\Users\Admin\AppData\Roaming\frecgfv
C:\Users\Admin\AppData\Roaming\frecgfv
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:2084

C:\Users\Admin\AppData\Roaming\frecgfv
C:\Users\Admin\AppData\Roaming\frecgfv
2⤵
- Executes dropped EXE
- Checks SCSI registry key(s)
- Suspicious behavior: MapViewOfSection
PID:2656

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 428 -p 2236 -ip 2236
1⤵
PID:4072

Network

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

Persistence

Create or Modify System Process

T1543

Windows Service

T1543.003

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

Privilege Escalation

Create or Modify System Process

T1543

Windows Service

T1543.003

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

Defense Evasion

Modify Registry

Credential Access

Discovery

Query Registry

System Information Discovery