lumma | 6a3faf643c2c33f48b0e59c9edb14baebbf9ce1678aed83727106b739f0cafcb

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\shell = "explorer.exe \"C:\\Windows\\Fonts\\wmsncs.exe\""	wmsncs.exe

Modifies firewall policy service 2 TTPs 8 IoCs

Modify Registry

Windows Service

description	ioc	Process
Set value (int)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\DisableNotifications = "1"	wmsncs.exe
Key created	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\DomainProfile	wmsncs.exe
Set value (int)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\DomainProfile\EnableFirewall = "0"	wmsncs.exe
Set value (int)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\DomainProfile\DoNotAllowExceptions = "0"	wmsncs.exe
Set value (int)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\DomainProfile\DisableNotifications = "1"	wmsncs.exe
Key created	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile	wmsncs.exe
Set value (int)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\EnableFirewall = "0"	wmsncs.exe
Set value (int)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\DoNotAllowExceptions = "0"	wmsncs.exe

Modifies security service 2 TTPs 1 IoCs

Modify Registry

Windows Service

description	ioc	Process
Set value (int)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\wscsvc\Start = "4"	wmsncs.exe

Windows security bypass 2 TTPs 5 IoCs

evasion trojan

Disable or Modify Tools

T1562.001

Modify Registry

description	ioc	Process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\UpdatesDisableNotify = "1"	wmsncs.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\AntiVirusDisableNotify = "1"	wmsncs.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\FirewallDisableNotify = "1"	wmsncs.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\AntiVirusOverride = "1"	wmsncs.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\FirewallOverride = "1"	wmsncs.exe

Looks for VMWare Tools registry key 2 TTPs 2 IoCs

Query Registry

T1012

Virtualization/Sandbox Evasion

T1497

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\VMware, Inc.\VMware Tools	a4bdf08099f23da066d81eddb1c229d1.exe
Key opened	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\VMware, Inc.\VMware Tools	wmsncs.exe

Modifies Installed Components in the registry 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

Modify Registry

description	ioc	Process
Key created	\REGISTRY\MACHINE\Software\WOW6432Node\Microsoft\Active Setup\Installed Components\{103L3C30-C3B3-4130-9363-E59E1375PERM}	wmsncs.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{103L3C30-C3B3-4130-9363-E59E1375PERM}\StubPath = "C:\\Windows\\Fonts\\wmsncs.exe"	wmsncs.exe

Modifies Windows Firewall 2 TTPs 5 IoCs

Windows Service

Disable or Modify System Firewall

T1562.004

pid	Process
552	netsh.exe
1936	netsh.exe
3268	netsh.exe
224	netsh.exe
1368	netsh.exe

Deletes itself 1 IoCs

pid	Process
3008	wmsncs.exe

Executes dropped EXE 1 IoCs

pid	Process
3008	wmsncs.exe

Windows security modification 2 TTPs 5 IoCs

evasion trojan

Disable or Modify Tools

T1562.001

Modify Registry

description	ioc	Process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\UpdatesDisableNotify = "1"	wmsncs.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\AntiVirusDisableNotify = "1"	wmsncs.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\FirewallDisableNotify = "1"	wmsncs.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\AntiVirusOverride = "1"	wmsncs.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\FirewallOverride = "1"	wmsncs.exe

Adds Run key to start application 2 TTPs 4 IoCs

persistence

Registry Run Keys / Startup Folder

Modify Registry

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\Wmsncs Service = "C:\\Windows\\Fonts\\wmsncs.exe"	wmsncs.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\NvidMediaCenter = "C:\\Program Files (x86)\\Common Files\\System\\wmsncs.exe"	wmsncs.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\Spool Driver Service = "C:\\Windows\\system32\\spool\\drivers\\wmsncs.exe"	wmsncs.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\Wins Service = "C:\\Windows\\system32\\wins\\wmsncs.exe"	wmsncs.exe

Drops file in System32 directory 4 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\wins\wmsncs.exe	wmsncs.exe
File created	C:\Windows\system32\spool\drivers\wmsncs.exe	wmsncs.exe
File opened for modification	C:\Windows\system32\spool\drivers\wmsncs.exe	wmsncs.exe
File created	C:\Windows\SysWOW64\wins\wmsncs.exe	wmsncs.exe

Drops file in Program Files directory 3 IoCs

description	ioc	Process
File opened for modification	C:\Program Files (x86)\Common Files\System	wmsncs.exe
File created	C:\Program Files (x86)\Common Files\System\wmsncs.exe	wmsncs.exe
File opened for modification	C:\Program Files (x86)\Common Files\System\wmsncs.exe	wmsncs.exe

Drops file in Windows directory 2 IoCs

description	ioc	Process
File created	C:\Windows\Fonts\wmsncs.exe	a4bdf08099f23da066d81eddb1c229d1.exe
File opened for modification	C:\Windows\Fonts\wmsncs.exe	a4bdf08099f23da066d81eddb1c229d1.exe

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

System Information Discovery
T1082

Modifies data under HKEY_USERS 19 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Active Setup\Installed Components	wmsncs.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\MaxConnectionsPer1_0Server = "65534"	wmsncs.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\MaxConnectionsPerServer = "65534"	wmsncs.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Active Setup	wmsncs.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings	wmsncs.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Run\NvidMediaCenter = "C:\\Program Files (x86)\\Common Files\\System\\wmsncs.exe"	wmsncs.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Run\Wins Service = "C:\\Windows\\system32\\wins\\wmsncs.exe"	wmsncs.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\	wmsncs.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\AutoDetect = "0"	wmsncs.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Active Setup\Installed Components\{103L3C30-C3B3-4130-9363-E59E1375PERM}\StubPath = "C:\\Windows\\Fonts\\wmsncs.exe"	wmsncs.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\\Microsoft\\Windows\\CurrentVersion\\Run	wmsncs.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Run\Wmsncs Service = "C:\\Windows\\Fonts\\wmsncs.exe"	wmsncs.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Run\Spool Driver Service = "C:\\Windows\\system32\\spool\\drivers\\wmsncs.exe"	wmsncs.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\IntranetName = "1"	wmsncs.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\UNCAsIntranet = "1"	wmsncs.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Active Setup\Installed Components\{103L3C30-C3B3-4130-9363-E59E1375PERM}	wmsncs.exe
Key created	\REGISTRY\USER\.DEFAULT\Software	wmsncs.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft	wmsncs.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\ProxyBypass = "1"	wmsncs.exe

Suspicious use of AdjustPrivilegeToken 4 IoCs

description	pid	Process
Token: 33	1636	a4bdf08099f23da066d81eddb1c229d1.exe
Token: SeIncBasePriorityPrivilege	1636	a4bdf08099f23da066d81eddb1c229d1.exe
Token: 33	3008	wmsncs.exe
Token: SeIncBasePriorityPrivilege	3008	wmsncs.exe

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 3008 wrote to memory of 552	3008	wmsncs.exe	91
PID 3008 wrote to memory of 552	3008	wmsncs.exe	91
PID 3008 wrote to memory of 552	3008	wmsncs.exe	91
PID 3008 wrote to memory of 1936	3008	wmsncs.exe	93
PID 3008 wrote to memory of 1936	3008	wmsncs.exe	93
PID 3008 wrote to memory of 1936	3008	wmsncs.exe	93
PID 3008 wrote to memory of 3268	3008	wmsncs.exe	95
PID 3008 wrote to memory of 3268	3008	wmsncs.exe	95
PID 3008 wrote to memory of 3268	3008	wmsncs.exe	95
PID 3008 wrote to memory of 224	3008	wmsncs.exe	97
PID 3008 wrote to memory of 224	3008	wmsncs.exe	97
PID 3008 wrote to memory of 224	3008	wmsncs.exe	97
PID 3008 wrote to memory of 1368	3008	wmsncs.exe	99
PID 3008 wrote to memory of 1368	3008	wmsncs.exe	99
PID 3008 wrote to memory of 1368	3008	wmsncs.exe	99

C:\Users\Admin\AppData\Local\Temp\a4bdf08099f23da066d81eddb1c229d1.exe
"C:\Users\Admin\AppData\Local\Temp\a4bdf08099f23da066d81eddb1c229d1.exe"
1⤵
- Looks for VMWare Tools registry key
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
PID:1636

C:\Windows\Fonts\wmsncs.exe
"C:\Windows\Fonts\wmsncs.exe"
1⤵
- Modifies WinLogon for persistence
- Modifies firewall policy service
- Modifies security service
- Windows security bypass
- Looks for VMWare Tools registry key
- Modifies Installed Components in the registry
- Deletes itself
- Executes dropped EXE
- Windows security modification
- Adds Run key to start application
- Drops file in System32 directory
- Drops file in Program Files directory
- Modifies data under HKEY_USERS
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3008
- C:\Windows\SysWOW64\netsh.exe
  "C:\Windows\System32\netsh.exe" firewall set portopening TCP 1013 BS
  2⤵
  - Modifies Windows Firewall
  PID:552
- C:\Windows\SysWOW64\netsh.exe
  "C:\Windows\System32\netsh.exe" firewall set portopening TCP 8080 PORT1
  2⤵
  - Modifies Windows Firewall
  PID:1936
- C:\Windows\SysWOW64\netsh.exe
  "C:\Windows\System32\netsh.exe" firewall set portopening TCP 8081 PORT2
  2⤵
  - Modifies Windows Firewall
  PID:3268
- C:\Windows\SysWOW64\netsh.exe
  "C:\Windows\System32\netsh.exe" firewall add allowedprogram "C:\Windows\Fonts\wmsncs.exe" workstation ENABLE ALL
  2⤵
  - Modifies Windows Firewall
  PID:224
- C:\Windows\SysWOW64\netsh.exe
  "C:\Windows\System32\netsh.exe" firewall set allowedprogram "C:\Windows\Fonts\wmsncs.exe" workstation ENABLE ALL
  2⤵
  - Modifies Windows Firewall
  PID:1368

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

Winlogon Helper DLL

T1547.004

Create or Modify System Process

T1543

Windows Service

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

Winlogon Helper DLL

T1547.004

Create or Modify System Process

T1543

Windows Service

Defense Evasion

Impair Defenses

T1562

Disable or Modify System Firewall

T1562.004

Disable or Modify Tools

T1562.001

Modify Registry