3dd0058415627fd8931b04605dc1e53ea610950aa7b8716e711cac0f53a198ea

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\shell = "Explorer.exe \"C:\\Windows\\system32\\printer.{2227A280-3AEA-1069-A2DE-08002B30309D}.\\ûØþæüüþýþ.exe\""	3862431768357d168771fb7b82de20d0N.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
Key created	\REGISTRY\USER\S-1-5-21-2480455240-981575606-1030659066-1000\Software\Microsoft\Active Setup\Installed Components\{D6669984-1ACC-3323-2833-998428331ACC}	3862431768357d168771fb7b82de20d0N.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2480455240-981575606-1030659066-1000\SOFTWARE\Microsoft\Active Setup\Installed Components\{D6669984-1ACC-3323-2833-998428331ACC}\Direktori = "d[}xŠ\u008f…\u0090˜”}”š”•†ŽTS}‘“Š\u008f•†“OœSSSXbSYQNTbfbNRQWZNbSefNQYQQScTQTQZež"	3862431768357d168771fb7b82de20d0N.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2480455240-981575606-1030659066-1000\SOFTWARE\Microsoft\Active Setup\Installed Components\{D6669984-1ACC-3323-2833-998428331ACC}\last-check = "ûØþæüüþýþ.exe"	3862431768357d168771fb7b82de20d0N.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2480455240-981575606-1030659066-1000\SOFTWARE\Microsoft\Active Setup\Installed Components\{D6669984-1ACC-3323-2833-998428331ACC}\last-check7 = "öÓùá÷÷ùøù\u0090„•\u0090.exe"	3862431768357d168771fb7b82de20d0N.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-1-5-21-2480455240-981575606-1030659066-1000\Control Panel\International\Geo\Nation	öÓùá÷÷ùøù„•.exe
Key value queried	\REGISTRY\USER\S-1-5-21-2480455240-981575606-1030659066-1000\Control Panel\International\Geo\Nation	ûØþæüüþýþ.exe

Executes dropped EXE 4 IoCs

pid	Process
5004	öÓùá÷÷ùøù„•.exe
2932	ûØþæüüþýþ.exe
452	ûØþæüüþýþ.exe
4504	öÓùá÷÷ùøù„•.exe

UPX packed file 10 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

resource	yara_rule
behavioral2/memory/720-0-0x0000000000400000-0x0000000000422000-memory.dmp	upx
behavioral2/files/0x000700000002342b-7.dat	upx
behavioral2/memory/5004-11-0x0000000000400000-0x0000000000422000-memory.dmp	upx
behavioral2/files/0x000700000002342a-15.dat	upx
behavioral2/memory/720-22-0x0000000000400000-0x0000000000422000-memory.dmp	upx
behavioral2/memory/4504-26-0x0000000000400000-0x0000000000422000-memory.dmp	upx
behavioral2/memory/4504-43-0x0000000000400000-0x0000000000422000-memory.dmp	upx
behavioral2/memory/2932-47-0x0000000000400000-0x0000000000422000-memory.dmp	upx
behavioral2/memory/452-45-0x0000000000400000-0x0000000000422000-memory.dmp	upx
behavioral2/memory/5004-41-0x0000000000400000-0x0000000000422000-memory.dmp	upx

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\öÓùá÷÷ùøù„•.exe = "C:\\Windows\\system32\\printer.{2227A280-3AEA-1069-A2DE-08002B30309D}.\\öÓùá÷÷ùøù\u0090„•\u0090.exe"	3862431768357d168771fb7b82de20d0N.exe

Drops file in System32 directory 5 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\printer.{2227A280-3AEA-1069-A2DE-08002B30309D}	3862431768357d168771fb7b82de20d0N.exe
File opened for modification	C:\Windows\SysWOW64\printer.{2227A280-3AEA-1069-A2DE-08002B30309D}\ûØþæüüþýþ.exe	3862431768357d168771fb7b82de20d0N.exe
File opened for modification	C:\Windows\SysWOW64\printer.{2227A280-3AEA-1069-A2DE-08002B30309D}\öÓùá÷÷ùøù„•.exe	3862431768357d168771fb7b82de20d0N.exe
File opened for modification	C:\Windows\SysWOW64\printer.{2227A280-3AEA-1069-A2DE-08002B30309D}\mail-buffers	3862431768357d168771fb7b82de20d0N.exe
File opened for modification	C:\Windows\SysWOW64\printer.{2227A280-3AEA-1069-A2DE-08002B30309D}\mail-sent	3862431768357d168771fb7b82de20d0N.exe

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

System Information Discovery
T1082

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

Modifies registry class 2 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-2480455240-981575606-1030659066-1000_Classes\Local Settings	öÓùá÷÷ùøù„•.exe
Key created	\REGISTRY\USER\S-1-5-21-2480455240-981575606-1030659066-1000_Classes\Local Settings	ûØþæüüþýþ.exe

Suspicious behavior: AddClipboardFormatListener 2 IoCs

pid	Process
728	WINWORD.EXE
728	WINWORD.EXE

Suspicious use of SetWindowsHookEx 13 IoCs

pid	Process
720	3862431768357d168771fb7b82de20d0N.exe
5004	öÓùá÷÷ùøù„•.exe
2932	ûØþæüüþýþ.exe
452	ûØþæüüþýþ.exe
4504	öÓùá÷÷ùøù„•.exe
728	WINWORD.EXE
728	WINWORD.EXE
728	WINWORD.EXE
728	WINWORD.EXE
728	WINWORD.EXE
728	WINWORD.EXE
728	WINWORD.EXE
728	WINWORD.EXE

Suspicious use of WriteProcessMemory 16 IoCs

description	pid	Process	procid_target
PID 720 wrote to memory of 5004	720	3862431768357d168771fb7b82de20d0N.exe	85
PID 720 wrote to memory of 5004	720	3862431768357d168771fb7b82de20d0N.exe	85
PID 720 wrote to memory of 5004	720	3862431768357d168771fb7b82de20d0N.exe	85
PID 720 wrote to memory of 2932	720	3862431768357d168771fb7b82de20d0N.exe	87
PID 720 wrote to memory of 2932	720	3862431768357d168771fb7b82de20d0N.exe	87
PID 720 wrote to memory of 2932	720	3862431768357d168771fb7b82de20d0N.exe	87
PID 5004 wrote to memory of 728	5004	öÓùá÷÷ùøù„•.exe	88
PID 5004 wrote to memory of 728	5004	öÓùá÷÷ùøù„•.exe	88
PID 5004 wrote to memory of 452	5004	öÓùá÷÷ùøù„•.exe	90
PID 5004 wrote to memory of 452	5004	öÓùá÷÷ùøù„•.exe	90
PID 5004 wrote to memory of 452	5004	öÓùá÷÷ùøù„•.exe	90
PID 2932 wrote to memory of 2212	2932	ûØþæüüþýþ.exe	89
PID 2932 wrote to memory of 2212	2932	ûØþæüüþýþ.exe	89
PID 2932 wrote to memory of 4504	2932	ûØþæüüþýþ.exe	91
PID 2932 wrote to memory of 4504	2932	ûØþæüüþýþ.exe	91
PID 2932 wrote to memory of 4504	2932	ûØþæüüþýþ.exe	91

C:\Users\Admin\AppData\Local\Temp\3862431768357d168771fb7b82de20d0N.exe
"C:\Users\Admin\AppData\Local\Temp\3862431768357d168771fb7b82de20d0N.exe"
1⤵
- Modifies WinLogon for persistence
- Boot or Logon Autostart Execution: Active Setup
- Adds Run key to start application
- Drops file in System32 directory
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:720
- C:\Windows\SysWOW64\printer.{2227A280-3AEA-1069-A2DE-08002B30309D}\öÓùá÷÷ùøù„•.exe
  C:\Windows\system32\printer.{2227A280-3AEA-1069-A2DE-08002B30309D}\öÓùá÷÷ùøù„•.exe
  2⤵
  - Checks computer location settings
  - Executes dropped EXE
  - Modifies registry class
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:5004
- - C:\Program Files\Microsoft Office\Root\Office16\WINWORD.EXE
    "C:\Program Files\Microsoft Office\Root\Office16\WINWORD.EXE" /n "C:\Users\Admin\AppData\Roaming\the [K]angen is back.doc" /o ""
    3⤵
    - Checks processor information in registry
    - Enumerates system info in registry
    - Suspicious behavior: AddClipboardFormatListener
    - Suspicious use of SetWindowsHookEx
    PID:728
- - C:\Windows\SysWOW64\printer.{2227A280-3AEA-1069-A2DE-08002B30309D}\ûØþæüüþýþ.exe
    C:\Windows\system32\printer.{2227A280-3AEA-1069-A2DE-08002B30309D}.\ûØþæüüþýþ.exe
    3⤵
    - Executes dropped EXE
    - Suspicious use of SetWindowsHookEx
    PID:452
- C:\Windows\SysWOW64\printer.{2227A280-3AEA-1069-A2DE-08002B30309D}\ûØþæüüþýþ.exe
  C:\Windows\system32\printer.{2227A280-3AEA-1069-A2DE-08002B30309D}\ûØþæüüþýþ.exe
  2⤵
  - Checks computer location settings
  - Executes dropped EXE
  - Modifies registry class
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:2932
- - C:\Program Files\Microsoft Office\Root\Office16\WINWORD.EXE
    "C:\Program Files\Microsoft Office\Root\Office16\WINWORD.EXE" /n "C:\Users\Admin\AppData\Roaming\the [K]angen is back.doc" /o ""
    3⤵
    PID:2212
- - C:\Windows\SysWOW64\printer.{2227A280-3AEA-1069-A2DE-08002B30309D}\öÓùá÷÷ùøù„•.exe
    C:\Windows\system32\printer.{2227A280-3AEA-1069-A2DE-08002B30309D}.\öÓùá÷÷ùøù„•.exe
    3⤵
    - Executes dropped EXE
    - Suspicious use of SetWindowsHookEx
    PID:4504

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

T1547.001

Winlogon Helper DLL

T1547.004

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Active Setup

T1547.014

Registry Run Keys / Startup Folder

T1547.001

Winlogon Helper DLL

T1547.004

Defense Evasion

Modify Registry

Credential Access

Discovery

Query Registry

System Information Discovery

4