betabot | 9a77f554fbc23a4d71cbb980b5dcdef80291fa70849430a929a1e1bb9cebc2dc

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:

211F.exeexplorer.exe

description	ioc	process
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\1535c5s3gc3s.exe	211F.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\1535c5s3gc3s.exe\DisableExceptionChainValidation	211F.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 = "qtjt.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:

2BCF.exe

description ioc process

Key value queried \REGISTRY\USER\S-1-5-21-3073191680-435865314-2862784915-1000\Control Panel\International\Geo\Nation 2BCF.exe
Deletes itself 1 IoCs

Processes:

pid process

3588
Executes dropped EXE 4 IoCs

Processes:

211F.exe2BCF.exeWindowsUpdater.exewcvbedg

pid process

3092 211F.exe
3172 2BCF.exe
3672 WindowsUpdater.exe
896 wcvbedg
Loads dropped DLL 2 IoCs

Processes:

WindowsUpdater.exe

pid process

3672 WindowsUpdater.exe
3672 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	2BCF.exe

pid	process
3588

pid	process
3092	211F.exe
3172	2BCF.exe
3672	WindowsUpdater.exe
896	wcvbedg

pid	process
3672	WindowsUpdater.exe
3672	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\\1535c5s3gc3s.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\\1535c5s3gc3s.exe\""	explorer.exe

Checks whether UAC is enabled 1 TTPs 1 IoCs
evasion trojan

System Information Discovery
T1082

Processes:

211F.exe

description ioc process

Key value queried \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA 211F.exe
Suspicious use of NtSetInformationThreadHideFromDebugger 8 IoCs

Processes:

211F.exeexplorer.exe

pid process

3092 211F.exe
1064 explorer.exe
1064 explorer.exe
1064 explorer.exe
1064 explorer.exe
1064 explorer.exe
1064 explorer.exe
1064 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

3000 1064 WerFault.exe explorer.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA	211F.exe

pid	process
3092	211F.exe
1064	explorer.exe
1064	explorer.exe
1064	explorer.exe
1064	explorer.exe
1064	explorer.exe
1064	explorer.exe
1064	explorer.exe

pid	pid_target	process	target process
3000	1064	WerFault.exe	explorer.exe

NSIS installer 8 IoCs

installer

Processes:

resource	yara_rule
C:\Users\Admin\AppData\Local\Temp\2BCF.exe	nsis_installer_2
C:\Users\Admin\AppData\Local\Temp\2BCF.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 6 IoCs

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

Query Registry

Peripheral Device Discovery

T1120

System Information Discovery

Processes:

wcvbedga24f02aa70607beea6af7963d2a51a4d.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	wcvbedg
Key queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	wcvbedg
Key enumerated	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	wcvbedg
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	a24f02aa70607beea6af7963d2a51a4d.exe
Key queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	a24f02aa70607beea6af7963d2a51a4d.exe
Key enumerated	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	a24f02aa70607beea6af7963d2a51a4d.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.exe211F.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	211F.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	211F.exe

Enumerates system info in registry 2 TTPs 2 IoCs

Query Registry

System Information Discovery

Processes:

explorer.exe

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

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:

a24f02aa70607beea6af7963d2a51a4d.exe

pid	process
1944	a24f02aa70607beea6af7963d2a51a4d.exe
1944	a24f02aa70607beea6af7963d2a51a4d.exe
3588
3588
3588
3588
3588
3588
3588
3588
3588
3588
3588
3588
3588
3588
3588
3588
3588
3588
3588
3588
3588
3588
3588
3588
3588
3588
3588
3588
3588
3588
3588
3588
3588
3588
3588
3588
3588
3588
3588
3588
3588
3588
3588
3588
3588
3588
3588
3588
3588
3588
3588
3588
3588
3588
3588
3588
3588
3588
3588
3588
3588
3588

Suspicious behavior: MapViewOfSection 4 IoCs

Processes:

a24f02aa70607beea6af7963d2a51a4d.exe211F.exewcvbedg

pid process

1944 a24f02aa70607beea6af7963d2a51a4d.exe
3092 211F.exe
3092 211F.exe
896 wcvbedg

Suspicious use of AdjustPrivilegeToken 30 IoCs

Processes:

211F.exeexplorer.exe

description	pid	process
Token: SeDebugPrivilege	3092	211F.exe
Token: SeRestorePrivilege	3092	211F.exe
Token: SeBackupPrivilege	3092	211F.exe
Token: SeLoadDriverPrivilege	3092	211F.exe
Token: SeCreatePagefilePrivilege	3092	211F.exe
Token: SeShutdownPrivilege	3092	211F.exe
Token: SeTakeOwnershipPrivilege	3092	211F.exe
Token: SeChangeNotifyPrivilege	3092	211F.exe
Token: SeCreateTokenPrivilege	3092	211F.exe
Token: SeMachineAccountPrivilege	3092	211F.exe
Token: SeSecurityPrivilege	3092	211F.exe
Token: SeAssignPrimaryTokenPrivilege	3092	211F.exe
Token: SeCreateGlobalPrivilege	3092	211F.exe
Token: 33	3092	211F.exe
Token: SeDebugPrivilege	1064	explorer.exe
Token: SeRestorePrivilege	1064	explorer.exe
Token: SeBackupPrivilege	1064	explorer.exe
Token: SeLoadDriverPrivilege	1064	explorer.exe
Token: SeCreatePagefilePrivilege	1064	explorer.exe
Token: SeShutdownPrivilege	1064	explorer.exe
Token: SeTakeOwnershipPrivilege	1064	explorer.exe
Token: SeChangeNotifyPrivilege	1064	explorer.exe
Token: SeCreateTokenPrivilege	1064	explorer.exe
Token: SeMachineAccountPrivilege	1064	explorer.exe
Token: SeSecurityPrivilege	1064	explorer.exe
Token: SeAssignPrimaryTokenPrivilege	1064	explorer.exe
Token: SeCreateGlobalPrivilege	1064	explorer.exe
Token: 33	1064	explorer.exe
Token: SeShutdownPrivilege	3588
Token: SeCreatePagefilePrivilege	3588

Suspicious use of UnmapMainImage 1 IoCs

Processes:

pid process

3588

pid	process
3588

Suspicious use of WriteProcessMemory 12 IoCs

Processes:

211F.exe2BCF.exe

description	pid	process	target process
PID 3588 wrote to memory of 3092	3588		211F.exe
PID 3588 wrote to memory of 3092	3588		211F.exe
PID 3588 wrote to memory of 3092	3588		211F.exe
PID 3588 wrote to memory of 3172	3588		2BCF.exe
PID 3588 wrote to memory of 3172	3588		2BCF.exe
PID 3588 wrote to memory of 3172	3588		2BCF.exe
PID 3092 wrote to memory of 1064	3092	211F.exe	explorer.exe
PID 3092 wrote to memory of 1064	3092	211F.exe	explorer.exe
PID 3092 wrote to memory of 1064	3092	211F.exe	explorer.exe
PID 3172 wrote to memory of 3672	3172	2BCF.exe	WindowsUpdater.exe
PID 3172 wrote to memory of 3672	3172	2BCF.exe	WindowsUpdater.exe
PID 3172 wrote to memory of 3672	3172	2BCF.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\a24f02aa70607beea6af7963d2a51a4d.exe
"C:\Users\Admin\AppData\Local\Temp\a24f02aa70607beea6af7963d2a51a4d.exe"
1⤵
- Checks SCSI registry key(s)
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
PID:1944

C:\Users\Admin\AppData\Local\Temp\211F.exe
C:\Users\Admin\AppData\Local\Temp\211F.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:3092
- 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:1064
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 1064 -s 1068
    3⤵
    - Program crash
    PID:3000

C:\Users\Admin\AppData\Local\Temp\2BCF.exe
C:\Users\Admin\AppData\Local\Temp\2BCF.exe
1⤵
- Checks computer location settings
- Executes dropped EXE
- Suspicious use of WriteProcessMemory
PID:3172
- C:\Users\Admin\AppData\Local\Temp\WindowsUpdater.exe
  "C:\Users\Admin\AppData\Local\Temp\WindowsUpdater.exe"
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  PID:3672

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 384 -p 1064 -ip 1064
1⤵
PID:1476

C:\Users\Admin\AppData\Roaming\wcvbedg
C:\Users\Admin\AppData\Roaming\wcvbedg
1⤵
- Executes dropped EXE
- Checks SCSI registry key(s)
- Suspicious behavior: MapViewOfSection
PID:896

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