xenorat | 4a58b228b23cdc286d103115b2fb312eedf6741aeada17b242620b6737db1035

System Information Discovery

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-3227495264-2217614367-4027411560-1000\Control Panel\International\Geo\Nation	MDEODF.exe

Executes dropped EXE 8 IoCs

pid	Process
3280	MDEODF.exe
4220	MDEODF.exe
880	MDEODF.exe
4048	MDEODF.exe
1216	MDEODF.exe
3976	MDEODF.exe
2240	MDEODF.exe
2212	MDEODF.exe

Suspicious use of SetThreadContext 6 IoCs

description	pid	Process	procid_target
PID 3280 set thread context of 4220	3280	MDEODF.exe	88
PID 3280 set thread context of 880	3280	MDEODF.exe	89
PID 3280 set thread context of 4048	3280	MDEODF.exe	91
PID 1216 set thread context of 3976	1216	MDEODF.exe	97
PID 1216 set thread context of 2240	1216	MDEODF.exe	98
PID 1216 set thread context of 2212	1216	MDEODF.exe	99

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

System Information Discovery
T1082

Program crash 2 IoCs

pid	pid_target	Process	procid_target
1284	880	WerFault.exe	89
4520	4220	WerFault.exe	88

System Location Discovery: System Language Discovery 1 TTPs 7 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	MDEODF.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	MDEODF.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	MDEODF.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	MDEODF.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	MDEODF.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	MDEODF.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	WINWORD.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz	WINWORD.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	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
2840	schtasks.exe

Suspicious behavior: AddClipboardFormatListener 2 IoCs

pid	Process
4208	WINWORD.EXE
4208	WINWORD.EXE

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	3280	MDEODF.exe
Token: SeDebugPrivilege	1216	MDEODF.exe

Suspicious use of SetWindowsHookEx 7 IoCs

pid	Process
4208	WINWORD.EXE
4208	WINWORD.EXE
4208	WINWORD.EXE
4208	WINWORD.EXE
4208	WINWORD.EXE
4208	WINWORD.EXE
4208	WINWORD.EXE

Suspicious use of WriteProcessMemory 57 IoCs

description	pid	Process	procid_target
PID 4208 wrote to memory of 3280	4208	WINWORD.EXE	86
PID 4208 wrote to memory of 3280	4208	WINWORD.EXE	86
PID 4208 wrote to memory of 3280	4208	WINWORD.EXE	86
PID 3280 wrote to memory of 4220	3280	MDEODF.exe	88
PID 3280 wrote to memory of 4220	3280	MDEODF.exe	88
PID 3280 wrote to memory of 4220	3280	MDEODF.exe	88
PID 3280 wrote to memory of 4220	3280	MDEODF.exe	88
PID 3280 wrote to memory of 4220	3280	MDEODF.exe	88
PID 3280 wrote to memory of 4220	3280	MDEODF.exe	88
PID 3280 wrote to memory of 4220	3280	MDEODF.exe	88
PID 3280 wrote to memory of 4220	3280	MDEODF.exe	88
PID 3280 wrote to memory of 880	3280	MDEODF.exe	89
PID 3280 wrote to memory of 880	3280	MDEODF.exe	89
PID 3280 wrote to memory of 880	3280	MDEODF.exe	89
PID 3280 wrote to memory of 880	3280	MDEODF.exe	89
PID 3280 wrote to memory of 880	3280	MDEODF.exe	89
PID 3280 wrote to memory of 880	3280	MDEODF.exe	89
PID 3280 wrote to memory of 880	3280	MDEODF.exe	89
PID 3280 wrote to memory of 880	3280	MDEODF.exe	89
PID 3280 wrote to memory of 4048	3280	MDEODF.exe	91
PID 3280 wrote to memory of 4048	3280	MDEODF.exe	91
PID 3280 wrote to memory of 4048	3280	MDEODF.exe	91
PID 3280 wrote to memory of 4048	3280	MDEODF.exe	91
PID 3280 wrote to memory of 4048	3280	MDEODF.exe	91
PID 3280 wrote to memory of 4048	3280	MDEODF.exe	91
PID 3280 wrote to memory of 4048	3280	MDEODF.exe	91
PID 3280 wrote to memory of 4048	3280	MDEODF.exe	91
PID 4048 wrote to memory of 1216	4048	MDEODF.exe	96
PID 4048 wrote to memory of 1216	4048	MDEODF.exe	96
PID 4048 wrote to memory of 1216	4048	MDEODF.exe	96
PID 1216 wrote to memory of 3976	1216	MDEODF.exe	97
PID 1216 wrote to memory of 3976	1216	MDEODF.exe	97
PID 1216 wrote to memory of 3976	1216	MDEODF.exe	97
PID 1216 wrote to memory of 3976	1216	MDEODF.exe	97
PID 1216 wrote to memory of 3976	1216	MDEODF.exe	97
PID 1216 wrote to memory of 3976	1216	MDEODF.exe	97
PID 1216 wrote to memory of 3976	1216	MDEODF.exe	97
PID 1216 wrote to memory of 3976	1216	MDEODF.exe	97
PID 1216 wrote to memory of 2240	1216	MDEODF.exe	98
PID 1216 wrote to memory of 2240	1216	MDEODF.exe	98
PID 1216 wrote to memory of 2240	1216	MDEODF.exe	98
PID 1216 wrote to memory of 2240	1216	MDEODF.exe	98
PID 1216 wrote to memory of 2240	1216	MDEODF.exe	98
PID 1216 wrote to memory of 2240	1216	MDEODF.exe	98
PID 1216 wrote to memory of 2240	1216	MDEODF.exe	98
PID 1216 wrote to memory of 2240	1216	MDEODF.exe	98
PID 1216 wrote to memory of 2212	1216	MDEODF.exe	99
PID 1216 wrote to memory of 2212	1216	MDEODF.exe	99
PID 1216 wrote to memory of 2212	1216	MDEODF.exe	99
PID 1216 wrote to memory of 2212	1216	MDEODF.exe	99
PID 1216 wrote to memory of 2212	1216	MDEODF.exe	99
PID 1216 wrote to memory of 2212	1216	MDEODF.exe	99
PID 1216 wrote to memory of 2212	1216	MDEODF.exe	99
PID 1216 wrote to memory of 2212	1216	MDEODF.exe	99
PID 2212 wrote to memory of 2840	2212	MDEODF.exe	106
PID 2212 wrote to memory of 2840	2212	MDEODF.exe	106
PID 2212 wrote to memory of 2840	2212	MDEODF.exe	106

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\26973056c194b68b10d1c2b9a632a27e.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:4208
- C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\MDEODF.exe
  "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\MDEODF.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:3280
- - C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\MDEODF.exe
    C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\MDEODF.exe
    3⤵
    - Executes dropped EXE
    PID:4220
  - - C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 4220 -s 80
      4⤵
      Program crash
      PID:4520
- - C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\MDEODF.exe
    C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\MDEODF.exe
    3⤵
    - Executes dropped EXE
    PID:880
  - - C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 880 -s 80
      4⤵
      Program crash
      PID:1284
- - C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\MDEODF.exe
    C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\MDEODF.exe
    3⤵
    - Checks computer location settings
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:4048
  - - C:\Users\Admin\AppData\Roaming\UpdateManager\MDEODF.exe
      "C:\Users\Admin\AppData\Roaming\UpdateManager\MDEODF.exe"
      4⤵
      Executes dropped EXE
      Suspicious use of SetThreadContext
      System Location Discovery: System Language Discovery
      Suspicious use of AdjustPrivilegeToken
      Suspicious use of WriteProcessMemory
      PID:1216
    - - C:\Users\Admin\AppData\Roaming\UpdateManager\MDEODF.exe
        
        C:\Users\Admin\AppData\Roaming\UpdateManager\MDEODF.exe
        5⤵
        Executes dropped EXE
        System Location Discovery: System Language Discovery
        
        PID:3976
    - - C:\Users\Admin\AppData\Roaming\UpdateManager\MDEODF.exe
        
        C:\Users\Admin\AppData\Roaming\UpdateManager\MDEODF.exe
        5⤵
        Executes dropped EXE
        System Location Discovery: System Language Discovery
        
        PID:2240
    - - C:\Users\Admin\AppData\Roaming\UpdateManager\MDEODF.exe
        
        C:\Users\Admin\AppData\Roaming\UpdateManager\MDEODF.exe
        5⤵
        Executes dropped EXE
        System Location Discovery: System Language Discovery
        Suspicious use of WriteProcessMemory
        
        PID:2212
      - C:\Windows\SysWOW64\schtasks.exe
        
        "schtasks.exe" /Create /TN "mrec" /XML "C:\Users\Admin\AppData\Local\Temp\tmpD62C.tmp" /F
        6⤵
        System Location Discovery: System Language Discovery
        Scheduled Task/Job: Scheduled Task
        
        PID:2840

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 4220 -ip 4220
1⤵
PID:4284

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 460 -p 880 -ip 880
1⤵
PID:688

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