xenorat | 548212f42d5dc4965db354d6ce075422dcb3331a213fb0b5b662e08e59234829

System Information Discovery

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

Executes dropped EXE 8 IoCs

pid	Process
2516	RUSYZH.exe
1684	RUSYZH.exe
2976	RUSYZH.exe
4172	RUSYZH.exe
2812	RUSYZH.exe
3764	RUSYZH.exe
456	RUSYZH.exe
3508	RUSYZH.exe

Suspicious use of SetThreadContext 6 IoCs

description	pid	Process	procid_target
PID 2516 set thread context of 1684	2516	RUSYZH.exe	88
PID 2516 set thread context of 2976	2516	RUSYZH.exe	90
PID 2516 set thread context of 4172	2516	RUSYZH.exe	91
PID 2812 set thread context of 3764	2812	RUSYZH.exe	97
PID 2812 set thread context of 456	2812	RUSYZH.exe	98
PID 2812 set thread context of 3508	2812	RUSYZH.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
3368	1684	WerFault.exe	88
3952	4172	WerFault.exe	91

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	RUSYZH.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	RUSYZH.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	RUSYZH.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	RUSYZH.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	RUSYZH.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	RUSYZH.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 value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemSKU	WINWORD.EXE
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\BIOS	WINWORD.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemFamily	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
2592	schtasks.exe

Suspicious behavior: AddClipboardFormatListener 2 IoCs

pid	Process
3128	WINWORD.EXE
3128	WINWORD.EXE

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
3764	RUSYZH.exe
3764	RUSYZH.exe
3764	RUSYZH.exe
3764	RUSYZH.exe
3764	RUSYZH.exe
3764	RUSYZH.exe
3764	RUSYZH.exe
3764	RUSYZH.exe
3764	RUSYZH.exe
3764	RUSYZH.exe
3764	RUSYZH.exe
3764	RUSYZH.exe
3764	RUSYZH.exe
3764	RUSYZH.exe
3764	RUSYZH.exe
3764	RUSYZH.exe
3764	RUSYZH.exe
3764	RUSYZH.exe
3764	RUSYZH.exe
3764	RUSYZH.exe
3764	RUSYZH.exe
3764	RUSYZH.exe
3764	RUSYZH.exe
3764	RUSYZH.exe
3764	RUSYZH.exe
3764	RUSYZH.exe
3764	RUSYZH.exe
3764	RUSYZH.exe
3764	RUSYZH.exe
3764	RUSYZH.exe
3764	RUSYZH.exe
3764	RUSYZH.exe
3764	RUSYZH.exe
3764	RUSYZH.exe
3764	RUSYZH.exe
3764	RUSYZH.exe
3764	RUSYZH.exe
3764	RUSYZH.exe
3764	RUSYZH.exe
3764	RUSYZH.exe
3764	RUSYZH.exe
3764	RUSYZH.exe
3764	RUSYZH.exe
3764	RUSYZH.exe
3764	RUSYZH.exe
3764	RUSYZH.exe
3764	RUSYZH.exe
3764	RUSYZH.exe
3764	RUSYZH.exe
3764	RUSYZH.exe
3764	RUSYZH.exe
3764	RUSYZH.exe
3764	RUSYZH.exe
3764	RUSYZH.exe
3764	RUSYZH.exe
3764	RUSYZH.exe
3764	RUSYZH.exe
3764	RUSYZH.exe
3764	RUSYZH.exe
3764	RUSYZH.exe
3764	RUSYZH.exe
3764	RUSYZH.exe
3764	RUSYZH.exe
3764	RUSYZH.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	2516	RUSYZH.exe
Token: SeDebugPrivilege	2812	RUSYZH.exe
Token: SeDebugPrivilege	3764	RUSYZH.exe

Suspicious use of SetWindowsHookEx 7 IoCs

pid	Process
3128	WINWORD.EXE
3128	WINWORD.EXE
3128	WINWORD.EXE
3128	WINWORD.EXE
3128	WINWORD.EXE
3128	WINWORD.EXE
3128	WINWORD.EXE

Suspicious use of UnmapMainImage 1 IoCs

pid	Process
1684	RUSYZH.exe

Suspicious use of WriteProcessMemory 57 IoCs

description	pid	Process	procid_target
PID 3128 wrote to memory of 2516	3128	WINWORD.EXE	86
PID 3128 wrote to memory of 2516	3128	WINWORD.EXE	86
PID 3128 wrote to memory of 2516	3128	WINWORD.EXE	86
PID 2516 wrote to memory of 1684	2516	RUSYZH.exe	88
PID 2516 wrote to memory of 1684	2516	RUSYZH.exe	88
PID 2516 wrote to memory of 1684	2516	RUSYZH.exe	88
PID 2516 wrote to memory of 1684	2516	RUSYZH.exe	88
PID 2516 wrote to memory of 1684	2516	RUSYZH.exe	88
PID 2516 wrote to memory of 1684	2516	RUSYZH.exe	88
PID 2516 wrote to memory of 1684	2516	RUSYZH.exe	88
PID 2516 wrote to memory of 1684	2516	RUSYZH.exe	88
PID 2516 wrote to memory of 2976	2516	RUSYZH.exe	90
PID 2516 wrote to memory of 2976	2516	RUSYZH.exe	90
PID 2516 wrote to memory of 2976	2516	RUSYZH.exe	90
PID 2516 wrote to memory of 2976	2516	RUSYZH.exe	90
PID 2516 wrote to memory of 2976	2516	RUSYZH.exe	90
PID 2516 wrote to memory of 2976	2516	RUSYZH.exe	90
PID 2516 wrote to memory of 2976	2516	RUSYZH.exe	90
PID 2516 wrote to memory of 2976	2516	RUSYZH.exe	90
PID 2516 wrote to memory of 4172	2516	RUSYZH.exe	91
PID 2516 wrote to memory of 4172	2516	RUSYZH.exe	91
PID 2516 wrote to memory of 4172	2516	RUSYZH.exe	91
PID 2516 wrote to memory of 4172	2516	RUSYZH.exe	91
PID 2516 wrote to memory of 4172	2516	RUSYZH.exe	91
PID 2516 wrote to memory of 4172	2516	RUSYZH.exe	91
PID 2516 wrote to memory of 4172	2516	RUSYZH.exe	91
PID 2516 wrote to memory of 4172	2516	RUSYZH.exe	91
PID 2976 wrote to memory of 2812	2976	RUSYZH.exe	96
PID 2976 wrote to memory of 2812	2976	RUSYZH.exe	96
PID 2976 wrote to memory of 2812	2976	RUSYZH.exe	96
PID 2812 wrote to memory of 3764	2812	RUSYZH.exe	97
PID 2812 wrote to memory of 3764	2812	RUSYZH.exe	97
PID 2812 wrote to memory of 3764	2812	RUSYZH.exe	97
PID 2812 wrote to memory of 3764	2812	RUSYZH.exe	97
PID 2812 wrote to memory of 3764	2812	RUSYZH.exe	97
PID 2812 wrote to memory of 3764	2812	RUSYZH.exe	97
PID 2812 wrote to memory of 3764	2812	RUSYZH.exe	97
PID 2812 wrote to memory of 3764	2812	RUSYZH.exe	97
PID 2812 wrote to memory of 456	2812	RUSYZH.exe	98
PID 2812 wrote to memory of 456	2812	RUSYZH.exe	98
PID 2812 wrote to memory of 456	2812	RUSYZH.exe	98
PID 2812 wrote to memory of 456	2812	RUSYZH.exe	98
PID 2812 wrote to memory of 456	2812	RUSYZH.exe	98
PID 2812 wrote to memory of 456	2812	RUSYZH.exe	98
PID 2812 wrote to memory of 456	2812	RUSYZH.exe	98
PID 2812 wrote to memory of 456	2812	RUSYZH.exe	98
PID 2812 wrote to memory of 3508	2812	RUSYZH.exe	99
PID 2812 wrote to memory of 3508	2812	RUSYZH.exe	99
PID 2812 wrote to memory of 3508	2812	RUSYZH.exe	99
PID 2812 wrote to memory of 3508	2812	RUSYZH.exe	99
PID 2812 wrote to memory of 3508	2812	RUSYZH.exe	99
PID 2812 wrote to memory of 3508	2812	RUSYZH.exe	99
PID 2812 wrote to memory of 3508	2812	RUSYZH.exe	99
PID 2812 wrote to memory of 3508	2812	RUSYZH.exe	99
PID 3764 wrote to memory of 2592	3764	RUSYZH.exe	106
PID 3764 wrote to memory of 2592	3764	RUSYZH.exe	106
PID 3764 wrote to memory of 2592	3764	RUSYZH.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\ec6627e48bb4c56abbb2a4563072e631.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:3128
- C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\RUSYZH.exe
  "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\RUSYZH.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2516
- - C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\RUSYZH.exe
    C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\RUSYZH.exe
    3⤵
    - Executes dropped EXE
    - Suspicious use of UnmapMainImage
    PID:1684
  - - C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 1684 -s 12
      4⤵
      Program crash
      PID:3368
- - C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\RUSYZH.exe
    C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\RUSYZH.exe
    3⤵
    - Checks computer location settings
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:2976
  - - C:\Users\Admin\AppData\Roaming\UpdateManager\RUSYZH.exe
      "C:\Users\Admin\AppData\Roaming\UpdateManager\RUSYZH.exe"
      4⤵
      Executes dropped EXE
      Suspicious use of SetThreadContext
      System Location Discovery: System Language Discovery
      Suspicious use of AdjustPrivilegeToken
      Suspicious use of WriteProcessMemory
      PID:2812
    - - C:\Users\Admin\AppData\Roaming\UpdateManager\RUSYZH.exe
        
        C:\Users\Admin\AppData\Roaming\UpdateManager\RUSYZH.exe
        5⤵
        Executes dropped EXE
        System Location Discovery: System Language Discovery
        Suspicious behavior: EnumeratesProcesses
        Suspicious use of AdjustPrivilegeToken
        Suspicious use of WriteProcessMemory
        
        PID:3764
      - C:\Windows\SysWOW64\schtasks.exe
        
        "schtasks.exe" /Create /TN "mrec" /XML "C:\Users\Admin\AppData\Local\Temp\tmpE213.tmp" /F
        6⤵
        System Location Discovery: System Language Discovery
        Scheduled Task/Job: Scheduled Task
        
        PID:2592
    - - C:\Users\Admin\AppData\Roaming\UpdateManager\RUSYZH.exe
        
        C:\Users\Admin\AppData\Roaming\UpdateManager\RUSYZH.exe
        5⤵
        Executes dropped EXE
        System Location Discovery: System Language Discovery
        
        PID:456
    - - C:\Users\Admin\AppData\Roaming\UpdateManager\RUSYZH.exe
        
        C:\Users\Admin\AppData\Roaming\UpdateManager\RUSYZH.exe
        5⤵
        Executes dropped EXE
        System Location Discovery: System Language Discovery
        
        PID:3508
- - C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\RUSYZH.exe
    C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\RUSYZH.exe
    3⤵
    - Executes dropped EXE
    PID:4172
  - - C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 4172 -s 80
      4⤵
      Program crash
      PID:3952

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 4172 -ip 4172
1⤵
PID:5040

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 436 -p 1684 -ip 1684
1⤵
PID:4916

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