betabot | ff3c37194588b0ab57806755deda730040c591668356edb8d461ef85e357196b

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:

B621.exeexplorer.exe

description	ioc	process
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\1wk9111k71ga59.exe	B621.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\1wk9111k71ga59.exe\DisableExceptionChainValidation	B621.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 = "uoumkmz.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
Deletes itself 1 IoCs

Processes:

pid process

3604
Executes dropped EXE 1 IoCs

Processes:

B621.exe

pid process

4328 B621.exe

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

pid	process
3604

pid	process
4328	B621.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-1-5-21-1815711207-1844170477-3539718864-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\RunOnce\Java Updater = "C:\\ProgramData\\Java Updater\\1wk9111k71ga59.exe"	explorer.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1815711207-1844170477-3539718864-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Java Updater = "\"C:\\ProgramData\\Java Updater\\1wk9111k71ga59.exe\""	explorer.exe

Checks whether UAC is enabled 1 TTPs 1 IoCs
evasion trojan

System Information Discovery
T1082

Processes:

B621.exe

description ioc process

Key value queried \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA B621.exe
Suspicious use of NtSetInformationThreadHideFromDebugger 8 IoCs

Processes:

B621.exeexplorer.exe

pid process

4328 B621.exe
1252 explorer.exe
1252 explorer.exe
1252 explorer.exe
1252 explorer.exe
1252 explorer.exe
1252 explorer.exe
1252 explorer.exe
Program crash 1 IoCs

Processes:

WerFault.exe

pid pid_target process target process

316 1252 WerFault.exe explorer.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA	B621.exe

pid	process
4328	B621.exe
1252	explorer.exe
1252	explorer.exe
1252	explorer.exe
1252	explorer.exe
1252	explorer.exe
1252	explorer.exe
1252	explorer.exe

pid	pid_target	process	target process
316	1252	WerFault.exe	explorer.exe

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:

bae2d7a4aa83d9443f46561543c410b4.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	bae2d7a4aa83d9443f46561543c410b4.exe
Key queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	bae2d7a4aa83d9443f46561543c410b4.exe
Key enumerated	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	bae2d7a4aa83d9443f46561543c410b4.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:

B621.exeexplorer.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	B621.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
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	B621.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-1-5-21-1815711207-1844170477-3539718864-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\2\2500 = "3"	explorer.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-1815711207-1844170477-3539718864-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\3\2500 = "3"	explorer.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-1815711207-1844170477-3539718864-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\4\2500 = "3"	explorer.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-1815711207-1844170477-3539718864-1000\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-1-5-21-1815711207-1844170477-3539718864-1000\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-1-5-21-1815711207-1844170477-3539718864-1000\Software\Microsoft\Internet Explorer\Main explorer.exe

description	ioc	process
Key created	\REGISTRY\USER\S-1-5-21-1815711207-1844170477-3539718864-1000\Software\Microsoft\Internet Explorer\Main	explorer.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

Processes:

bae2d7a4aa83d9443f46561543c410b4.exe

pid	process
4896	bae2d7a4aa83d9443f46561543c410b4.exe
4896	bae2d7a4aa83d9443f46561543c410b4.exe
3604
3604
3604
3604
3604
3604
3604
3604
3604
3604
3604
3604
3604
3604
3604
3604
3604
3604
3604
3604
3604
3604
3604
3604
3604
3604
3604
3604
3604
3604
3604
3604
3604
3604
3604
3604
3604
3604
3604
3604
3604
3604
3604
3604
3604
3604
3604
3604
3604
3604
3604
3604
3604
3604
3604
3604
3604
3604
3604
3604
3604
3604

Suspicious behavior: MapViewOfSection 3 IoCs

Processes:

bae2d7a4aa83d9443f46561543c410b4.exeB621.exe

pid process

4896 bae2d7a4aa83d9443f46561543c410b4.exe
4328 B621.exe
4328 B621.exe

Suspicious use of AdjustPrivilegeToken 30 IoCs

Processes:

B621.exeexplorer.exe

description	pid	process
Token: SeDebugPrivilege	4328	B621.exe
Token: SeRestorePrivilege	4328	B621.exe
Token: SeBackupPrivilege	4328	B621.exe
Token: SeLoadDriverPrivilege	4328	B621.exe
Token: SeCreatePagefilePrivilege	4328	B621.exe
Token: SeShutdownPrivilege	4328	B621.exe
Token: SeTakeOwnershipPrivilege	4328	B621.exe
Token: SeChangeNotifyPrivilege	4328	B621.exe
Token: SeCreateTokenPrivilege	4328	B621.exe
Token: SeMachineAccountPrivilege	4328	B621.exe
Token: SeSecurityPrivilege	4328	B621.exe
Token: SeAssignPrimaryTokenPrivilege	4328	B621.exe
Token: SeCreateGlobalPrivilege	4328	B621.exe
Token: 33	4328	B621.exe
Token: SeDebugPrivilege	1252	explorer.exe
Token: SeRestorePrivilege	1252	explorer.exe
Token: SeBackupPrivilege	1252	explorer.exe
Token: SeLoadDriverPrivilege	1252	explorer.exe
Token: SeCreatePagefilePrivilege	1252	explorer.exe
Token: SeShutdownPrivilege	1252	explorer.exe
Token: SeTakeOwnershipPrivilege	1252	explorer.exe
Token: SeChangeNotifyPrivilege	1252	explorer.exe
Token: SeCreateTokenPrivilege	1252	explorer.exe
Token: SeMachineAccountPrivilege	1252	explorer.exe
Token: SeSecurityPrivilege	1252	explorer.exe
Token: SeAssignPrimaryTokenPrivilege	1252	explorer.exe
Token: SeCreateGlobalPrivilege	1252	explorer.exe
Token: 33	1252	explorer.exe
Token: SeShutdownPrivilege	3604
Token: SeCreatePagefilePrivilege	3604

Suspicious use of WriteProcessMemory 6 IoCs

Processes:

B621.exe

description	pid	process	target process
PID 3604 wrote to memory of 4328	3604		B621.exe
PID 3604 wrote to memory of 4328	3604		B621.exe
PID 3604 wrote to memory of 4328	3604		B621.exe
PID 4328 wrote to memory of 1252	4328	B621.exe	explorer.exe
PID 4328 wrote to memory of 1252	4328	B621.exe	explorer.exe
PID 4328 wrote to memory of 1252	4328	B621.exe	explorer.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\bae2d7a4aa83d9443f46561543c410b4.exe
"C:\Users\Admin\AppData\Local\Temp\bae2d7a4aa83d9443f46561543c410b4.exe"
1⤵
- Checks SCSI registry key(s)
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
PID:4896

C:\Users\Admin\AppData\Local\Temp\B621.exe
C:\Users\Admin\AppData\Local\Temp\B621.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:4328

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:1252

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 1252 -s 1144
3⤵
- Program crash
PID:316

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 448 -p 1252 -ip 1252
1⤵
PID:4724

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

6

Credential Access

Discovery

Query Registry

5

System Information Discovery

5

Peripheral Device Discovery