cybergate | c9b78ae19e1b7b36a514ff91bc7b49ec4e0dd9f030826293e9bf4b9adbbf303b

Modify Registry

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run	SYEESTEM.EXE
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run\Policies = "C:\\Windows\\system32\\explere\\explere.exe"	SYEESTEM.EXE
Key created	\REGISTRY\USER\S-1-5-21-1045960512-3948844814-3059691613-1000\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run	SYEESTEM.EXE
Set value (str)	\REGISTRY\USER\S-1-5-21-1045960512-3948844814-3059691613-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run\Policies = "C:\\Windows\\system32\\explere\\explere.exe"	SYEESTEM.EXE

Boot or Logon Autostart Execution: Active Setup 2 TTPs 4 IoCs

Adversaries may achieve persistence by adding a Registry key to the Active Setup of the local machine.

persistence

Active Setup

T1547.014

Modify Registry

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{31B4J01T-N8RJ-FRIW-AEUG-WGRT8KK01A5G}\StubPath = "C:\\Windows\\system32\\explere\\explere.exe Restart"	SYEESTEM.EXE
Key created	\REGISTRY\MACHINE\Software\WOW6432Node\Microsoft\Active Setup\Installed Components\{31B4J01T-N8RJ-FRIW-AEUG-WGRT8KK01A5G}	explorer.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{31B4J01T-N8RJ-FRIW-AEUG-WGRT8KK01A5G}\StubPath = "C:\\Windows\\system32\\explere\\explere.exe"	explorer.exe
Key created	\REGISTRY\MACHINE\Software\WOW6432Node\Microsoft\Active Setup\Installed Components\{31B4J01T-N8RJ-FRIW-AEUG-WGRT8KK01A5G}	SYEESTEM.EXE

Checks computer location settings 2 TTPs 2 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

System Information Discovery

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-1045960512-3948844814-3059691613-1000\Control Panel\International\Geo\Nation	fc3502090b8f195ddab92d2c0f6123dc_JaffaCakes118.exe
Key value queried	\REGISTRY\USER\S-1-5-21-1045960512-3948844814-3059691613-1000\Control Panel\International\Geo\Nation	SYEESTEM.EXE

Executes dropped EXE 4 IoCs

pid	Process
632	SYEESTEM.EXE
112	SYSTEM.56.EXE
4056	TCPCRYPTER.EXE
6548	explere.exe

Loads dropped DLL 1 IoCs

pid	Process
3348	SYEESTEM.EXE

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

Modify Registry

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\HKLM = "C:\\Windows\\system32\\explere\\explere.exe"	SYEESTEM.EXE
Set value (str)	\REGISTRY\USER\S-1-5-21-1045960512-3948844814-3059691613-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\HKCU = "C:\\Windows\\system32\\explere\\explere.exe"	SYEESTEM.EXE

Drops file in System32 directory 4 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\explere\explere.exe	SYEESTEM.EXE
File opened for modification	C:\Windows\SysWOW64\explere\explere.exe	SYEESTEM.EXE
File opened for modification	C:\Windows\SysWOW64\explere\	SYEESTEM.EXE
File created	C:\Windows\SysWOW64\explere\explere.exe	SYEESTEM.EXE

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Program crash 1 IoCs

pid	pid_target	Process	procid_target
6600	6548	WerFault.exe	91

System Location Discovery: System Language Discovery 1 TTPs 8 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	dw20.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	explorer.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	SYEESTEM.EXE
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	explere.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	fc3502090b8f195ddab92d2c0f6123dc_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	SYEESTEM.EXE
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	SYSTEM.56.EXE
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	TCPCRYPTER.EXE

Checks processor information in registry 2 TTPs 3 IoCs

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

Query Registry

System Information Discovery

description	ioc	Process
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\CentralProcessor\0	dw20.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz	dw20.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	dw20.exe

Enumerates system info in registry 2 TTPs 2 IoCs

Query Registry

System Information Discovery

description	ioc	Process
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\BIOS	dw20.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemSKU	dw20.exe

Modifies registry class 1 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{1f3427c8-5c10-4210-aa03-2ee45287d668}\Instance\	SYEESTEM.EXE

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
632	SYEESTEM.EXE
632	SYEESTEM.EXE
112	SYSTEM.56.EXE
112	SYSTEM.56.EXE
112	SYSTEM.56.EXE
112	SYSTEM.56.EXE

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
3348	SYEESTEM.EXE

Suspicious use of AdjustPrivilegeToken 6 IoCs

description	pid	Process
Token: SeRestorePrivilege	4628	dw20.exe
Token: SeBackupPrivilege	4628	dw20.exe
Token: SeBackupPrivilege	4628	dw20.exe
Token: SeBackupPrivilege	4628	dw20.exe
Token: SeDebugPrivilege	3348	SYEESTEM.EXE
Token: SeDebugPrivilege	3348	SYEESTEM.EXE

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
632	SYEESTEM.EXE

Suspicious use of WriteProcessMemory 64 IoCs

description	pid	Process	procid_target
PID 2068 wrote to memory of 632	2068	fc3502090b8f195ddab92d2c0f6123dc_JaffaCakes118.exe	83
PID 2068 wrote to memory of 632	2068	fc3502090b8f195ddab92d2c0f6123dc_JaffaCakes118.exe	83
PID 2068 wrote to memory of 632	2068	fc3502090b8f195ddab92d2c0f6123dc_JaffaCakes118.exe	83
PID 2068 wrote to memory of 112	2068	fc3502090b8f195ddab92d2c0f6123dc_JaffaCakes118.exe	84
PID 2068 wrote to memory of 112	2068	fc3502090b8f195ddab92d2c0f6123dc_JaffaCakes118.exe	84
PID 2068 wrote to memory of 112	2068	fc3502090b8f195ddab92d2c0f6123dc_JaffaCakes118.exe	84
PID 2068 wrote to memory of 4056	2068	fc3502090b8f195ddab92d2c0f6123dc_JaffaCakes118.exe	85
PID 2068 wrote to memory of 4056	2068	fc3502090b8f195ddab92d2c0f6123dc_JaffaCakes118.exe	85
PID 2068 wrote to memory of 4056	2068	fc3502090b8f195ddab92d2c0f6123dc_JaffaCakes118.exe	85
PID 4056 wrote to memory of 4628	4056	TCPCRYPTER.EXE	86
PID 4056 wrote to memory of 4628	4056	TCPCRYPTER.EXE	86
PID 4056 wrote to memory of 4628	4056	TCPCRYPTER.EXE	86
PID 632 wrote to memory of 3520	632	SYEESTEM.EXE	56
PID 632 wrote to memory of 3520	632	SYEESTEM.EXE	56
PID 632 wrote to memory of 3520	632	SYEESTEM.EXE	56
PID 632 wrote to memory of 3520	632	SYEESTEM.EXE	56
PID 632 wrote to memory of 3520	632	SYEESTEM.EXE	56
PID 632 wrote to memory of 3520	632	SYEESTEM.EXE	56
PID 632 wrote to memory of 3520	632	SYEESTEM.EXE	56
PID 632 wrote to memory of 3520	632	SYEESTEM.EXE	56
PID 632 wrote to memory of 3520	632	SYEESTEM.EXE	56
PID 632 wrote to memory of 3520	632	SYEESTEM.EXE	56
PID 632 wrote to memory of 3520	632	SYEESTEM.EXE	56
PID 632 wrote to memory of 3520	632	SYEESTEM.EXE	56
PID 632 wrote to memory of 3520	632	SYEESTEM.EXE	56
PID 632 wrote to memory of 3520	632	SYEESTEM.EXE	56
PID 632 wrote to memory of 3520	632	SYEESTEM.EXE	56
PID 632 wrote to memory of 3520	632	SYEESTEM.EXE	56
PID 632 wrote to memory of 3520	632	SYEESTEM.EXE	56
PID 632 wrote to memory of 3520	632	SYEESTEM.EXE	56
PID 632 wrote to memory of 3520	632	SYEESTEM.EXE	56
PID 632 wrote to memory of 3520	632	SYEESTEM.EXE	56
PID 632 wrote to memory of 3520	632	SYEESTEM.EXE	56
PID 632 wrote to memory of 3520	632	SYEESTEM.EXE	56
PID 632 wrote to memory of 3520	632	SYEESTEM.EXE	56
PID 632 wrote to memory of 3520	632	SYEESTEM.EXE	56
PID 632 wrote to memory of 3520	632	SYEESTEM.EXE	56
PID 632 wrote to memory of 3520	632	SYEESTEM.EXE	56
PID 632 wrote to memory of 3520	632	SYEESTEM.EXE	56
PID 632 wrote to memory of 3520	632	SYEESTEM.EXE	56
PID 632 wrote to memory of 3520	632	SYEESTEM.EXE	56
PID 632 wrote to memory of 3520	632	SYEESTEM.EXE	56
PID 632 wrote to memory of 3520	632	SYEESTEM.EXE	56
PID 632 wrote to memory of 3520	632	SYEESTEM.EXE	56
PID 632 wrote to memory of 3520	632	SYEESTEM.EXE	56
PID 632 wrote to memory of 3520	632	SYEESTEM.EXE	56
PID 632 wrote to memory of 3520	632	SYEESTEM.EXE	56
PID 632 wrote to memory of 3520	632	SYEESTEM.EXE	56
PID 632 wrote to memory of 3520	632	SYEESTEM.EXE	56
PID 632 wrote to memory of 3520	632	SYEESTEM.EXE	56
PID 632 wrote to memory of 3520	632	SYEESTEM.EXE	56
PID 632 wrote to memory of 3520	632	SYEESTEM.EXE	56
PID 632 wrote to memory of 3520	632	SYEESTEM.EXE	56
PID 632 wrote to memory of 3520	632	SYEESTEM.EXE	56
PID 632 wrote to memory of 3520	632	SYEESTEM.EXE	56
PID 632 wrote to memory of 3520	632	SYEESTEM.EXE	56
PID 632 wrote to memory of 3520	632	SYEESTEM.EXE	56
PID 632 wrote to memory of 3520	632	SYEESTEM.EXE	56
PID 632 wrote to memory of 3520	632	SYEESTEM.EXE	56
PID 632 wrote to memory of 3520	632	SYEESTEM.EXE	56
PID 632 wrote to memory of 3520	632	SYEESTEM.EXE	56
PID 632 wrote to memory of 3520	632	SYEESTEM.EXE	56
PID 632 wrote to memory of 3520	632	SYEESTEM.EXE	56
PID 632 wrote to memory of 3520	632	SYEESTEM.EXE	56

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
PID:3520
- C:\Users\Admin\AppData\Local\Temp\fc3502090b8f195ddab92d2c0f6123dc_JaffaCakes118.exe
  "C:\Users\Admin\AppData\Local\Temp\fc3502090b8f195ddab92d2c0f6123dc_JaffaCakes118.exe"
  2⤵
  - Checks computer location settings
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2068
- - C:\SYEESTEM.EXE
    "C:\SYEESTEM.EXE"
    3⤵
    - Adds policy Run key to start application
    - Boot or Logon Autostart Execution: Active Setup
    - Executes dropped EXE
    - Adds Run key to start application
    - Drops file in System32 directory
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of FindShellTrayWindow
    - Suspicious use of WriteProcessMemory
    PID:632
  - - C:\Windows\SysWOW64\explorer.exe
      explorer.exe
      4⤵
      Boot or Logon Autostart Execution: Active Setup
      System Location Discovery: System Language Discovery
      PID:3184
  - - C:\Program Files\Internet Explorer\iexplore.exe
      "C:\Program Files\Internet Explorer\iexplore.exe"
      4⤵
      PID:3052
  - - C:\SYEESTEM.EXE
      "C:\SYEESTEM.EXE"
      4⤵
      Checks computer location settings
      Loads dropped DLL
      Drops file in System32 directory
      System Location Discovery: System Language Discovery
      Modifies registry class
      Suspicious behavior: GetForegroundWindowSpam
      Suspicious use of AdjustPrivilegeToken
      PID:3348
    - - C:\Windows\SysWOW64\explere\explere.exe
        
        "C:\Windows\system32\explere\explere.exe"
        5⤵
        Executes dropped EXE
        System Location Discovery: System Language Discovery
        
        PID:6548
      - C:\Windows\SysWOW64\WerFault.exe
        
        C:\Windows\SysWOW64\WerFault.exe -u -p 6548 -s 564
        6⤵
        Program crash
        
        PID:6600
- - C:\SYSTEM.56.EXE
    "C:\SYSTEM.56.EXE"
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    PID:112
- - C:\TCPCRYPTER.EXE
    "C:\TCPCRYPTER.EXE"
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:4056
  - - C:\Windows\Microsoft.NET\Framework\v2.0.50727\dw20.exe
      dw20.exe -x -s 884
      4⤵
      System Location Discovery: System Language Discovery
      Checks processor information in registry
      Enumerates system info in registry
      Suspicious use of AdjustPrivilegeToken
      PID:4628

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 6548 -ip 6548
1⤵
PID:6572

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Active Setup

T1547.014

Registry Run Keys / Startup Folder

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Active Setup

T1547.014

Registry Run Keys / Startup Folder

Defense Evasion

Modify Registry

Credential Access

Discovery

Query Registry

System Information Discovery