xenorat | 3106e90067456404a9f3e768ce3b60de6ae91fa2be664255ad6fe86c3f87e67d

System Information Discovery

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-3350944739-639801879-157714471-1000\Control Panel\International\Geo\Nation	KKSTV.exe

Executes dropped EXE 8 IoCs

pid	Process
2436	KKSTV.exe
3580	KKSTV.exe
3136	KKSTV.exe
4112	KKSTV.exe
4852	KKSTV.exe
2892	KKSTV.exe
2176	KKSTV.exe
4296	KKSTV.exe

Suspicious use of SetThreadContext 6 IoCs

description	pid	Process	procid_target
PID 2436 set thread context of 3580	2436	KKSTV.exe	89
PID 2436 set thread context of 3136	2436	KKSTV.exe	90
PID 2436 set thread context of 4112	2436	KKSTV.exe	91
PID 4852 set thread context of 2892	4852	KKSTV.exe	96
PID 4852 set thread context of 2176	4852	KKSTV.exe	97
PID 4852 set thread context of 4296	4852	KKSTV.exe	98

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

System Information Discovery
T1082

Program crash 3 IoCs

pid	pid_target	Process	procid_target
4828	4112	WerFault.exe	91
5104	4296	WerFault.exe	98
1448	2892	WerFault.exe	96

System Location Discovery: System Language Discovery 1 TTPs 6 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	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	KKSTV.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	KKSTV.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	KKSTV.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	KKSTV.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	KKSTV.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 value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	WINWORD.EXE
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\CentralProcessor\0	WINWORD.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz	WINWORD.EXE

Enumerates system info in registry 2 TTPs 3 IoCs

Query Registry

System Information Discovery

description	ioc	Process
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\BIOS	WINWORD.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemFamily	WINWORD.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemSKU	WINWORD.EXE

Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs

Schtasks is often used by malware for persistence or to perform post-infection execution.

persistence execution

Scheduled Task

pid	Process
4404	schtasks.exe

Suspicious behavior: AddClipboardFormatListener 2 IoCs

pid	Process
4176	WINWORD.EXE
4176	WINWORD.EXE

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
3136	KKSTV.exe
3136	KKSTV.exe
3136	KKSTV.exe
3136	KKSTV.exe
3136	KKSTV.exe
3136	KKSTV.exe
3136	KKSTV.exe
3136	KKSTV.exe
3136	KKSTV.exe
3136	KKSTV.exe
3136	KKSTV.exe
3136	KKSTV.exe
3136	KKSTV.exe
3136	KKSTV.exe
3136	KKSTV.exe
3136	KKSTV.exe
3136	KKSTV.exe
3136	KKSTV.exe
3136	KKSTV.exe
3136	KKSTV.exe
3136	KKSTV.exe
3136	KKSTV.exe
3136	KKSTV.exe
3136	KKSTV.exe
3136	KKSTV.exe
3136	KKSTV.exe
3136	KKSTV.exe
3136	KKSTV.exe
3136	KKSTV.exe
3136	KKSTV.exe
3136	KKSTV.exe
3136	KKSTV.exe
3136	KKSTV.exe
3136	KKSTV.exe
3136	KKSTV.exe
3136	KKSTV.exe
3136	KKSTV.exe
3136	KKSTV.exe
3136	KKSTV.exe
3136	KKSTV.exe
3136	KKSTV.exe
3136	KKSTV.exe
3136	KKSTV.exe
3136	KKSTV.exe
3136	KKSTV.exe
3136	KKSTV.exe
3136	KKSTV.exe
3136	KKSTV.exe
3136	KKSTV.exe
3136	KKSTV.exe
3136	KKSTV.exe
3136	KKSTV.exe
3136	KKSTV.exe
3136	KKSTV.exe
3136	KKSTV.exe
3136	KKSTV.exe
3136	KKSTV.exe
3136	KKSTV.exe
3136	KKSTV.exe
3136	KKSTV.exe
3136	KKSTV.exe
3136	KKSTV.exe
3136	KKSTV.exe
3136	KKSTV.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	2436	KKSTV.exe
Token: SeDebugPrivilege	4852	KKSTV.exe
Token: SeDebugPrivilege	3136	KKSTV.exe

Suspicious use of SetWindowsHookEx 7 IoCs

pid	Process
4176	WINWORD.EXE
4176	WINWORD.EXE
4176	WINWORD.EXE
4176	WINWORD.EXE
4176	WINWORD.EXE
4176	WINWORD.EXE
4176	WINWORD.EXE

Suspicious use of WriteProcessMemory 57 IoCs

description	pid	Process	procid_target
PID 4176 wrote to memory of 2436	4176	WINWORD.EXE	87
PID 4176 wrote to memory of 2436	4176	WINWORD.EXE	87
PID 4176 wrote to memory of 2436	4176	WINWORD.EXE	87
PID 2436 wrote to memory of 3580	2436	KKSTV.exe	89
PID 2436 wrote to memory of 3580	2436	KKSTV.exe	89
PID 2436 wrote to memory of 3580	2436	KKSTV.exe	89
PID 2436 wrote to memory of 3580	2436	KKSTV.exe	89
PID 2436 wrote to memory of 3580	2436	KKSTV.exe	89
PID 2436 wrote to memory of 3580	2436	KKSTV.exe	89
PID 2436 wrote to memory of 3580	2436	KKSTV.exe	89
PID 2436 wrote to memory of 3580	2436	KKSTV.exe	89
PID 2436 wrote to memory of 3136	2436	KKSTV.exe	90
PID 2436 wrote to memory of 3136	2436	KKSTV.exe	90
PID 2436 wrote to memory of 3136	2436	KKSTV.exe	90
PID 2436 wrote to memory of 3136	2436	KKSTV.exe	90
PID 2436 wrote to memory of 3136	2436	KKSTV.exe	90
PID 2436 wrote to memory of 3136	2436	KKSTV.exe	90
PID 2436 wrote to memory of 3136	2436	KKSTV.exe	90
PID 2436 wrote to memory of 3136	2436	KKSTV.exe	90
PID 2436 wrote to memory of 4112	2436	KKSTV.exe	91
PID 2436 wrote to memory of 4112	2436	KKSTV.exe	91
PID 2436 wrote to memory of 4112	2436	KKSTV.exe	91
PID 2436 wrote to memory of 4112	2436	KKSTV.exe	91
PID 2436 wrote to memory of 4112	2436	KKSTV.exe	91
PID 2436 wrote to memory of 4112	2436	KKSTV.exe	91
PID 2436 wrote to memory of 4112	2436	KKSTV.exe	91
PID 2436 wrote to memory of 4112	2436	KKSTV.exe	91
PID 3580 wrote to memory of 4852	3580	KKSTV.exe	95
PID 3580 wrote to memory of 4852	3580	KKSTV.exe	95
PID 3580 wrote to memory of 4852	3580	KKSTV.exe	95
PID 4852 wrote to memory of 2892	4852	KKSTV.exe	96
PID 4852 wrote to memory of 2892	4852	KKSTV.exe	96
PID 4852 wrote to memory of 2892	4852	KKSTV.exe	96
PID 4852 wrote to memory of 2892	4852	KKSTV.exe	96
PID 4852 wrote to memory of 2892	4852	KKSTV.exe	96
PID 4852 wrote to memory of 2892	4852	KKSTV.exe	96
PID 4852 wrote to memory of 2892	4852	KKSTV.exe	96
PID 4852 wrote to memory of 2892	4852	KKSTV.exe	96
PID 4852 wrote to memory of 2176	4852	KKSTV.exe	97
PID 4852 wrote to memory of 2176	4852	KKSTV.exe	97
PID 4852 wrote to memory of 2176	4852	KKSTV.exe	97
PID 4852 wrote to memory of 2176	4852	KKSTV.exe	97
PID 4852 wrote to memory of 2176	4852	KKSTV.exe	97
PID 4852 wrote to memory of 2176	4852	KKSTV.exe	97
PID 4852 wrote to memory of 2176	4852	KKSTV.exe	97
PID 4852 wrote to memory of 2176	4852	KKSTV.exe	97
PID 4852 wrote to memory of 4296	4852	KKSTV.exe	98
PID 4852 wrote to memory of 4296	4852	KKSTV.exe	98
PID 4852 wrote to memory of 4296	4852	KKSTV.exe	98
PID 4852 wrote to memory of 4296	4852	KKSTV.exe	98
PID 4852 wrote to memory of 4296	4852	KKSTV.exe	98
PID 4852 wrote to memory of 4296	4852	KKSTV.exe	98
PID 4852 wrote to memory of 4296	4852	KKSTV.exe	98
PID 4852 wrote to memory of 4296	4852	KKSTV.exe	98
PID 3136 wrote to memory of 4404	3136	KKSTV.exe	115
PID 3136 wrote to memory of 4404	3136	KKSTV.exe	115
PID 3136 wrote to memory of 4404	3136	KKSTV.exe	115

C:\Program Files\Microsoft Office\Root\Office16\WINWORD.EXE
"C:\Program Files\Microsoft Office\Root\Office16\WINWORD.EXE" /n "C:\Users\Admin\AppData\Local\Temp\13326ed69d36aaa385c5eba9fa6e5cc2.doc" /o ""
1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4176
- C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\KKSTV.exe
  "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\KKSTV.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2436
- - C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\KKSTV.exe
    C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\KKSTV.exe
    3⤵
    - Checks computer location settings
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:3580
  - - C:\Users\Admin\AppData\Roaming\UpdateManager\KKSTV.exe
      "C:\Users\Admin\AppData\Roaming\UpdateManager\KKSTV.exe"
      4⤵
      Executes dropped EXE
      Suspicious use of SetThreadContext
      System Location Discovery: System Language Discovery
      Suspicious use of AdjustPrivilegeToken
      Suspicious use of WriteProcessMemory
      PID:4852
    - - C:\Users\Admin\AppData\Roaming\UpdateManager\KKSTV.exe
        
        C:\Users\Admin\AppData\Roaming\UpdateManager\KKSTV.exe
        5⤵
        Executes dropped EXE
        
        PID:2892
      - C:\Windows\SysWOW64\WerFault.exe
        
        C:\Windows\SysWOW64\WerFault.exe -u -p 2892 -s 80
        6⤵
        Program crash
        
        PID:1448
    - - C:\Users\Admin\AppData\Roaming\UpdateManager\KKSTV.exe
        
        C:\Users\Admin\AppData\Roaming\UpdateManager\KKSTV.exe
        5⤵
        Executes dropped EXE
        System Location Discovery: System Language Discovery
        
        PID:2176
    - - C:\Users\Admin\AppData\Roaming\UpdateManager\KKSTV.exe
        
        C:\Users\Admin\AppData\Roaming\UpdateManager\KKSTV.exe
        5⤵
        Executes dropped EXE
        
        PID:4296
      - C:\Windows\SysWOW64\WerFault.exe
        
        C:\Windows\SysWOW64\WerFault.exe -u -p 4296 -s 80
        6⤵
        Program crash
        
        PID:5104
- - C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\KKSTV.exe
    C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\KKSTV.exe
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of WriteProcessMemory
    PID:3136
  - - C:\Windows\SysWOW64\schtasks.exe
      "schtasks.exe" /Create /TN "mrec" /XML "C:\Users\Admin\AppData\Local\Temp\tmpF05B.tmp" /F
      4⤵
      System Location Discovery: System Language Discovery
      Scheduled Task/Job: Scheduled Task
      PID:4404
- - C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\KKSTV.exe
    C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\KKSTV.exe
    3⤵
    - Executes dropped EXE
    PID:4112
  - - C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 4112 -s 12
      4⤵
      Program crash
      PID:4828

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 420 -p 4112 -ip 4112
1⤵
PID:892

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 480 -p 2892 -ip 2892
1⤵
PID:4964

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 512 -p 4296 -ip 4296
1⤵
PID:2100

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

T1053

Scheduled Task

Persistence

Scheduled Task/Job

T1053

Scheduled Task

Privilege Escalation

Scheduled Task/Job

T1053

Scheduled Task

Defense Evasion

Credential Access

Discovery

Query Registry

System Information Discovery