bc80027b9421054910b56445bb8d992e906a1ee4f0f37e3da1794a6e2f468776

Windows Service

T1543.003

Disable or Modify System Firewall

T1562.004

Processes:

bc80027b9421054910b56445bb8d992e906a1ee4f0f37e3da1794a6e2f468776N.exe

description	ioc	process
Key created	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile	bc80027b9421054910b56445bb8d992e906a1ee4f0f37e3da1794a6e2f468776N.exe
Key created	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications	bc80027b9421054910b56445bb8d992e906a1ee4f0f37e3da1794a6e2f468776N.exe
Set value (str)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List\c:\users\admin\appdata\local\temp\bc80027b9421054910b56445bb8d992e906a1ee4f0f37e3da1794a6e2f468776n.exe = "c:\\users\\admin\\appdata\\local\\temp\\bc80027b9421054910b56445bb8d992e906a1ee4f0f37e3da1794a6e2f468776n.exe:*:Enabled:System Update"	bc80027b9421054910b56445bb8d992e906a1ee4f0f37e3da1794a6e2f468776N.exe
Key created	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List	bc80027b9421054910b56445bb8d992e906a1ee4f0f37e3da1794a6e2f468776N.exe

Adds policy Run key to start application 2 TTPs 4 IoCs

persistence

Registry Run Keys / Startup Folder

Modify Registry

Processes:

bc80027b9421054910b56445bb8d992e906a1ee4f0f37e3da1794a6e2f468776N.exe

description	ioc	process
Key created	\REGISTRY\USER\S-1-5-21-4050598569-1597076380-177084960-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\policies\Explorer\Run	bc80027b9421054910b56445bb8d992e906a1ee4f0f37e3da1794a6e2f468776N.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-4050598569-1597076380-177084960-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run\winsys = "c:\\windows\\winsys.exe"	bc80027b9421054910b56445bb8d992e906a1ee4f0f37e3da1794a6e2f468776N.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run	bc80027b9421054910b56445bb8d992e906a1ee4f0f37e3da1794a6e2f468776N.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run\msrpc = "c:\\windows\\msrpc.exe"	bc80027b9421054910b56445bb8d992e906a1ee4f0f37e3da1794a6e2f468776N.exe

Sets service image path in registry 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

Modify Registry

Processes:

bc80027b9421054910b56445bb8d992e906a1ee4f0f37e3da1794a6e2f468776N.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\winsys\ImagePath = "c:\\windows\\winsys.exe"	bc80027b9421054910b56445bb8d992e906a1ee4f0f37e3da1794a6e2f468776N.exe

Adds Run key to start application 2 TTPs 3 IoCs

persistence

Registry Run Keys / Startup Folder

Modify Registry

Processes:

bc80027b9421054910b56445bb8d992e906a1ee4f0f37e3da1794a6e2f468776N.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-4050598569-1597076380-177084960-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\lsassv = "c:\\windows\\lsassv.exe"	bc80027b9421054910b56445bb8d992e906a1ee4f0f37e3da1794a6e2f468776N.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\winsys = "c:\\windows\\winsys.exe"	bc80027b9421054910b56445bb8d992e906a1ee4f0f37e3da1794a6e2f468776N.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\RunServices\winsys = "c:\\windows\\winsys.exe"	bc80027b9421054910b56445bb8d992e906a1ee4f0f37e3da1794a6e2f468776N.exe

Enumerates connected drives 3 TTPs 21 IoCs

Attempts to read the root path of hard drives other than the default C: drive.

Query Registry

T1012

Peripheral Device Discovery

T1120

System Information Discovery

T1082

Processes:

bc80027b9421054910b56445bb8d992e906a1ee4f0f37e3da1794a6e2f468776N.exe

description	ioc	process
File opened (read-only)	\??\t:	bc80027b9421054910b56445bb8d992e906a1ee4f0f37e3da1794a6e2f468776N.exe
File opened (read-only)	\??\h:	bc80027b9421054910b56445bb8d992e906a1ee4f0f37e3da1794a6e2f468776N.exe
File opened (read-only)	\??\l:	bc80027b9421054910b56445bb8d992e906a1ee4f0f37e3da1794a6e2f468776N.exe
File opened (read-only)	\??\z:	bc80027b9421054910b56445bb8d992e906a1ee4f0f37e3da1794a6e2f468776N.exe
File opened (read-only)	\??\x:	bc80027b9421054910b56445bb8d992e906a1ee4f0f37e3da1794a6e2f468776N.exe
File opened (read-only)	\??\r:	bc80027b9421054910b56445bb8d992e906a1ee4f0f37e3da1794a6e2f468776N.exe
File opened (read-only)	\??\n:	bc80027b9421054910b56445bb8d992e906a1ee4f0f37e3da1794a6e2f468776N.exe
File opened (read-only)	\??\i:	bc80027b9421054910b56445bb8d992e906a1ee4f0f37e3da1794a6e2f468776N.exe
File opened (read-only)	\??\w:	bc80027b9421054910b56445bb8d992e906a1ee4f0f37e3da1794a6e2f468776N.exe
File opened (read-only)	\??\u:	bc80027b9421054910b56445bb8d992e906a1ee4f0f37e3da1794a6e2f468776N.exe
File opened (read-only)	\??\q:	bc80027b9421054910b56445bb8d992e906a1ee4f0f37e3da1794a6e2f468776N.exe
File opened (read-only)	\??\o:	bc80027b9421054910b56445bb8d992e906a1ee4f0f37e3da1794a6e2f468776N.exe
File opened (read-only)	\??\p:	bc80027b9421054910b56445bb8d992e906a1ee4f0f37e3da1794a6e2f468776N.exe
File opened (read-only)	\??\m:	bc80027b9421054910b56445bb8d992e906a1ee4f0f37e3da1794a6e2f468776N.exe
File opened (read-only)	\??\k:	bc80027b9421054910b56445bb8d992e906a1ee4f0f37e3da1794a6e2f468776N.exe
File opened (read-only)	\??\j:	bc80027b9421054910b56445bb8d992e906a1ee4f0f37e3da1794a6e2f468776N.exe
File opened (read-only)	\??\e:	bc80027b9421054910b56445bb8d992e906a1ee4f0f37e3da1794a6e2f468776N.exe
File opened (read-only)	\??\y:	bc80027b9421054910b56445bb8d992e906a1ee4f0f37e3da1794a6e2f468776N.exe
File opened (read-only)	\??\v:	bc80027b9421054910b56445bb8d992e906a1ee4f0f37e3da1794a6e2f468776N.exe
File opened (read-only)	\??\s:	bc80027b9421054910b56445bb8d992e906a1ee4f0f37e3da1794a6e2f468776N.exe
File opened (read-only)	\??\g:	bc80027b9421054910b56445bb8d992e906a1ee4f0f37e3da1794a6e2f468776N.exe

Drops file in System32 directory 1 IoCs

Processes:

bc80027b9421054910b56445bb8d992e906a1ee4f0f37e3da1794a6e2f468776N.exe

description ioc process

File created \??\c:\windows\SysWOW64\regedit.exe bc80027b9421054910b56445bb8d992e906a1ee4f0f37e3da1794a6e2f468776N.exe

description	ioc	process
File created	\??\c:\windows\SysWOW64\regedit.exe	bc80027b9421054910b56445bb8d992e906a1ee4f0f37e3da1794a6e2f468776N.exe

Drops file in Windows directory 13 IoCs

Processes:

bc80027b9421054910b56445bb8d992e906a1ee4f0f37e3da1794a6e2f468776N.exe

description	ioc	process
File created	\??\c:\windows\msrpc.exe	bc80027b9421054910b56445bb8d992e906a1ee4f0f37e3da1794a6e2f468776N.exe
File created	\??\c:\windows\calc.exe	bc80027b9421054910b56445bb8d992e906a1ee4f0f37e3da1794a6e2f468776N.exe
File opened for modification	\??\c:\windows\calc.exe	bc80027b9421054910b56445bb8d992e906a1ee4f0f37e3da1794a6e2f468776N.exe
File created	\??\c:\windows\Start Menu\Programs\Startup\AdobeGammaLoader.scr	bc80027b9421054910b56445bb8d992e906a1ee4f0f37e3da1794a6e2f468776N.exe
File opened for modification	\??\c:\windows\mui\rctfd.sys	bc80027b9421054910b56445bb8d992e906a1ee4f0f37e3da1794a6e2f468776N.exe
File created	\??\c:\windows\winsys.exe	bc80027b9421054910b56445bb8d992e906a1ee4f0f37e3da1794a6e2f468776N.exe
File opened for modification	\??\c:\windows\lsassv.exe	bc80027b9421054910b56445bb8d992e906a1ee4f0f37e3da1794a6e2f468776N.exe
File opened for modification	\??\c:\windows\msrpc.exe	bc80027b9421054910b56445bb8d992e906a1ee4f0f37e3da1794a6e2f468776N.exe
File created	\??\c:\windows\regedit2.exe	bc80027b9421054910b56445bb8d992e906a1ee4f0f37e3da1794a6e2f468776N.exe
File opened for modification	\??\c:\windows\regedit2.exe	bc80027b9421054910b56445bb8d992e906a1ee4f0f37e3da1794a6e2f468776N.exe
File created	\??\c:\windows\Ãëàâíîå ìåíþ\Ïðîãðàììû\Àâòîçàãðóçêà\AdobeGammaLoader.scr	bc80027b9421054910b56445bb8d992e906a1ee4f0f37e3da1794a6e2f468776N.exe
File opened for modification	\??\c:\windows\winsys.exe	bc80027b9421054910b56445bb8d992e906a1ee4f0f37e3da1794a6e2f468776N.exe
File created	\??\c:\windows\lsassv.exe	bc80027b9421054910b56445bb8d992e906a1ee4f0f37e3da1794a6e2f468776N.exe

System Location Discovery: System Language Discovery 1 TTPs 1 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

Processes:

bc80027b9421054910b56445bb8d992e906a1ee4f0f37e3da1794a6e2f468776N.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	bc80027b9421054910b56445bb8d992e906a1ee4f0f37e3da1794a6e2f468776N.exe

Modifies registry class 3 IoCs

Processes:

bc80027b9421054910b56445bb8d992e906a1ee4f0f37e3da1794a6e2f468776N.exe

description	ioc	process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{65D5AFFB-D4EF-49AA-GFFG-5DA5E12E300A}\VerProg = "151"	bc80027b9421054910b56445bb8d992e906a1ee4f0f37e3da1794a6e2f468776N.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{65D5AFFB-D4EF-49AA-GFFG-5DA5E12E300A}	bc80027b9421054910b56445bb8d992e906a1ee4f0f37e3da1794a6e2f468776N.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{65D5AFFB-D4EF-49AA-GFFG-5DA5E12E300A}\ThisEXE = "c:\\users\\admin\\appdata\\local\\temp\\bc80027b9421054910b56445bb8d992e906a1ee4f0f37e3da1794a6e2f468776n.exe"	bc80027b9421054910b56445bb8d992e906a1ee4f0f37e3da1794a6e2f468776N.exe

Suspicious use of FindShellTrayWindow 1 IoCs

Processes:

bc80027b9421054910b56445bb8d992e906a1ee4f0f37e3da1794a6e2f468776N.exe

pid process

1356 bc80027b9421054910b56445bb8d992e906a1ee4f0f37e3da1794a6e2f468776N.exe

pid	process
1356	bc80027b9421054910b56445bb8d992e906a1ee4f0f37e3da1794a6e2f468776N.exe

C:\Users\Admin\AppData\Local\Temp\bc80027b9421054910b56445bb8d992e906a1ee4f0f37e3da1794a6e2f468776N.exe
"C:\Users\Admin\AppData\Local\Temp\bc80027b9421054910b56445bb8d992e906a1ee4f0f37e3da1794a6e2f468776N.exe"
1⤵
- Modifies firewall policy service
- Adds policy Run key to start application
- Sets service image path in registry
- Adds Run key to start application
- Enumerates connected drives
- Drops file in System32 directory
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Modifies registry class
- Suspicious use of FindShellTrayWindow
PID:1356

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

Create or Modify System Process

T1543

Windows Service

T1543.003

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

Create or Modify System Process

T1543

Windows Service

T1543.003

Defense Evasion

Impair Defenses

T1562

Disable or Modify System Firewall

Modify Registry

Credential Access

Discovery

Peripheral Device Discovery

Query Registry

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery