2408c7c6edbe0c4468f33b5ff15d025ab40b2bc8f911da10b711cc5cf1008722

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\Userinit = "userinit.exe,,C:\\Program Files (x86)\\Google\\fkXKSWnN.exe"	2408c7c6edbe0c4468f33b5ff15d025ab40b2bc8f911da10b711cc5cf1008722.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\Userinit = "C:\\Windows\\system32\\userinit.exe,,C:\\Program Files (x86)\\Google\\fkXKSWnN.exe"	2408c7c6edbe0c4468f33b5ff15d025ab40b2bc8f911da10b711cc5cf1008722.exe

Modifies firewall policy service 2 TTPs 3 IoCs

evasion

Modify Registry

Modify Existing Service

T1031

description	ioc	Process
Set value (int)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\DisableNotifications = "1"	FXzynaup.exe
Set value (int)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\DoNotAllowExceptions = "0"	FXzynaup.exe
Set value (int)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\EnableFirewall = "0"	FXzynaup.exe

Modifies security service 2 TTPs 4 IoCs

evasion

Modify Registry

Modify Existing Service

T1031

description	ioc	Process
Set value (int)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\services\wuauserv\Start = "4"	FXzynaup.exe
Set value (int)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\services\MpsSvc\Start = "4"	FXzynaup.exe
Set value (int)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\services\wscsvc\Start = "4"	FXzynaup.exe
Set value (int)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\services\WinDefend\Start = "4"	FXzynaup.exe

UAC bypass 3 TTPs 1 IoCs

Bypass User Account Control

T1088

Disabling Security Tools

Modify Registry

description	ioc	Process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	FXzynaup.exe

Windows security bypass 2 TTPs 6 IoCs

Disabling Security Tools

Modify Registry

description	ioc	Process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\AntiVirusDisableNotify = "1"	FXzynaup.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\FirewallDisableNotify = "1"	FXzynaup.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\FirewallOverride = "1"	FXzynaup.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\UpdatesDisableNotify = "1"	FXzynaup.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\UacDisableNotify = "1"	FXzynaup.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\AntiVirusOverride = "1"	FXzynaup.exe

Disables Task Manager via registry modification
evasion

Executes dropped EXE 2 IoCs

pid	Process
1608	FXzynaup.exe
716	FXzynaup.exe

UPX packed file 7 IoCs

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

upx

resource	yara_rule
behavioral1/memory/1744-57-0x0000000000400000-0x0000000000416000-memory.dmp	upx
behavioral1/memory/1744-62-0x0000000000400000-0x0000000000416000-memory.dmp	upx
behavioral1/memory/1744-63-0x0000000000400000-0x0000000000416000-memory.dmp	upx
behavioral1/memory/1744-68-0x0000000000400000-0x0000000000416000-memory.dmp	upx
behavioral1/memory/716-81-0x0000000000400000-0x0000000000416000-memory.dmp	upx
behavioral1/memory/1744-88-0x0000000000400000-0x0000000000416000-memory.dmp	upx
behavioral1/memory/716-89-0x0000000000400000-0x0000000000416000-memory.dmp	upx

Drops startup file 4 IoCs

description	ioc	Process
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\jpjBeeGg.exe	FXzynaup.exe
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\jpjBeeGg.exe	2408c7c6edbe0c4468f33b5ff15d025ab40b2bc8f911da10b711cc5cf1008722.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\jpjBeeGg.exe	2408c7c6edbe0c4468f33b5ff15d025ab40b2bc8f911da10b711cc5cf1008722.exe
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\jpjBeeGg.exe	FXzynaup.exe

Loads dropped DLL 3 IoCs

pid	Process
1744	2408c7c6edbe0c4468f33b5ff15d025ab40b2bc8f911da10b711cc5cf1008722.exe
1744	2408c7c6edbe0c4468f33b5ff15d025ab40b2bc8f911da10b711cc5cf1008722.exe
1608	FXzynaup.exe

Windows security modification 2 TTPs 6 IoCs

Disabling Security Tools

Modify Registry

description	ioc	Process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\AntiVirusDisableNotify = "1"	FXzynaup.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\FirewallDisableNotify = "1"	FXzynaup.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\FirewallOverride = "1"	FXzynaup.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\UpdatesDisableNotify = "1"	FXzynaup.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\UacDisableNotify = "1"	FXzynaup.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\AntiVirusOverride = "1"	FXzynaup.exe

Adds Run key to start application 2 TTPs 4 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Windows\CurrentVersion\Run	FXzynaup.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Windows\CurrentVersion\Run\rwgHjJaH = "C:\\Users\\Admin\\AppData\\Local\\Microsoft\\sAsmJeRh.exe"	FXzynaup.exe
Key created	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Windows\CurrentVersion\Run	2408c7c6edbe0c4468f33b5ff15d025ab40b2bc8f911da10b711cc5cf1008722.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Windows\CurrentVersion\Run\rwgHjJaH = "C:\\Users\\Admin\\AppData\\Local\\Microsoft\\sAsmJeRh.exe"	2408c7c6edbe0c4468f33b5ff15d025ab40b2bc8f911da10b711cc5cf1008722.exe

Checks whether UAC is enabled 1 TTPs 1 IoCs

System Information Discovery

T1082

description	ioc	Process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	FXzynaup.exe

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 1064 set thread context of 1744	1064	2408c7c6edbe0c4468f33b5ff15d025ab40b2bc8f911da10b711cc5cf1008722.exe	27
PID 1608 set thread context of 716	1608	FXzynaup.exe	29

Drops file in Program Files directory 2 IoCs

description	ioc	Process
File created	C:\Program Files (x86)\Google\fkXKSWnN.exe	2408c7c6edbe0c4468f33b5ff15d025ab40b2bc8f911da10b711cc5cf1008722.exe
File opened for modification	C:\Program Files (x86)\Google\fkXKSWnN.exe	2408c7c6edbe0c4468f33b5ff15d025ab40b2bc8f911da10b711cc5cf1008722.exe

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

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
716	FXzynaup.exe
716	FXzynaup.exe
716	FXzynaup.exe
716	FXzynaup.exe
716	FXzynaup.exe
716	FXzynaup.exe
716	FXzynaup.exe
716	FXzynaup.exe
716	FXzynaup.exe
716	FXzynaup.exe
716	FXzynaup.exe
716	FXzynaup.exe
716	FXzynaup.exe
716	FXzynaup.exe
716	FXzynaup.exe
716	FXzynaup.exe
716	FXzynaup.exe
716	FXzynaup.exe
716	FXzynaup.exe
716	FXzynaup.exe
716	FXzynaup.exe
716	FXzynaup.exe
716	FXzynaup.exe
716	FXzynaup.exe
716	FXzynaup.exe
716	FXzynaup.exe
716	FXzynaup.exe
716	FXzynaup.exe
716	FXzynaup.exe
716	FXzynaup.exe
716	FXzynaup.exe
716	FXzynaup.exe
716	FXzynaup.exe
716	FXzynaup.exe
716	FXzynaup.exe
716	FXzynaup.exe
716	FXzynaup.exe
716	FXzynaup.exe
716	FXzynaup.exe
716	FXzynaup.exe
716	FXzynaup.exe
716	FXzynaup.exe
716	FXzynaup.exe
716	FXzynaup.exe
716	FXzynaup.exe
716	FXzynaup.exe
716	FXzynaup.exe
716	FXzynaup.exe
716	FXzynaup.exe
716	FXzynaup.exe
716	FXzynaup.exe
716	FXzynaup.exe
716	FXzynaup.exe
716	FXzynaup.exe
716	FXzynaup.exe
716	FXzynaup.exe
716	FXzynaup.exe
716	FXzynaup.exe
716	FXzynaup.exe
716	FXzynaup.exe
716	FXzynaup.exe
716	FXzynaup.exe
716	FXzynaup.exe
716	FXzynaup.exe

Suspicious use of AdjustPrivilegeToken 6 IoCs

description	pid	Process
Token: SeSecurityPrivilege	1744	2408c7c6edbe0c4468f33b5ff15d025ab40b2bc8f911da10b711cc5cf1008722.exe
Token: SeDebugPrivilege	1744	2408c7c6edbe0c4468f33b5ff15d025ab40b2bc8f911da10b711cc5cf1008722.exe
Token: SeTcbPrivilege	1744	2408c7c6edbe0c4468f33b5ff15d025ab40b2bc8f911da10b711cc5cf1008722.exe
Token: SeSecurityPrivilege	716	FXzynaup.exe
Token: SeDebugPrivilege	716	FXzynaup.exe
Token: SeTcbPrivilege	716	FXzynaup.exe

Suspicious use of WriteProcessMemory 16 IoCs

description	pid	Process	procid_target
PID 1064 wrote to memory of 1744	1064	2408c7c6edbe0c4468f33b5ff15d025ab40b2bc8f911da10b711cc5cf1008722.exe	27
PID 1064 wrote to memory of 1744	1064	2408c7c6edbe0c4468f33b5ff15d025ab40b2bc8f911da10b711cc5cf1008722.exe	27
PID 1064 wrote to memory of 1744	1064	2408c7c6edbe0c4468f33b5ff15d025ab40b2bc8f911da10b711cc5cf1008722.exe	27
PID 1064 wrote to memory of 1744	1064	2408c7c6edbe0c4468f33b5ff15d025ab40b2bc8f911da10b711cc5cf1008722.exe	27
PID 1064 wrote to memory of 1744	1064	2408c7c6edbe0c4468f33b5ff15d025ab40b2bc8f911da10b711cc5cf1008722.exe	27
PID 1064 wrote to memory of 1744	1064	2408c7c6edbe0c4468f33b5ff15d025ab40b2bc8f911da10b711cc5cf1008722.exe	27
PID 1744 wrote to memory of 1608	1744	2408c7c6edbe0c4468f33b5ff15d025ab40b2bc8f911da10b711cc5cf1008722.exe	28
PID 1744 wrote to memory of 1608	1744	2408c7c6edbe0c4468f33b5ff15d025ab40b2bc8f911da10b711cc5cf1008722.exe	28
PID 1744 wrote to memory of 1608	1744	2408c7c6edbe0c4468f33b5ff15d025ab40b2bc8f911da10b711cc5cf1008722.exe	28
PID 1744 wrote to memory of 1608	1744	2408c7c6edbe0c4468f33b5ff15d025ab40b2bc8f911da10b711cc5cf1008722.exe	28
PID 1608 wrote to memory of 716	1608	FXzynaup.exe	29
PID 1608 wrote to memory of 716	1608	FXzynaup.exe	29
PID 1608 wrote to memory of 716	1608	FXzynaup.exe	29
PID 1608 wrote to memory of 716	1608	FXzynaup.exe	29
PID 1608 wrote to memory of 716	1608	FXzynaup.exe	29
PID 1608 wrote to memory of 716	1608	FXzynaup.exe	29

System policy modification 1 TTPs 1 IoCs

evasion

Modify Registry

description	ioc	Process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	FXzynaup.exe

C:\Users\Admin\AppData\Local\Temp\2408c7c6edbe0c4468f33b5ff15d025ab40b2bc8f911da10b711cc5cf1008722.exe
"C:\Users\Admin\AppData\Local\Temp\2408c7c6edbe0c4468f33b5ff15d025ab40b2bc8f911da10b711cc5cf1008722.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1064
- C:\Users\Admin\AppData\Local\Temp\2408c7c6edbe0c4468f33b5ff15d025ab40b2bc8f911da10b711cc5cf1008722.exe
  "C:\Users\Admin\AppData\Local\Temp\2408c7c6edbe0c4468f33b5ff15d025ab40b2bc8f911da10b711cc5cf1008722.exe"
  2⤵
  - Modifies WinLogon for persistence
  - Drops startup file
  - Loads dropped DLL
  - Adds Run key to start application
  - Drops file in Program Files directory
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:1744
- - C:\Users\Admin\AppData\Local\Temp\FXzynaup.exe
    "C:\Users\Admin\AppData\Local\Temp\FXzynaup.exe"
    3⤵
    - Executes dropped EXE
    - Loads dropped DLL
    - Suspicious use of SetThreadContext
    - Suspicious use of WriteProcessMemory
    PID:1608
  - - C:\Users\Admin\AppData\Local\Temp\FXzynaup.exe
      "C:\Users\Admin\AppData\Local\Temp\FXzynaup.exe"
      4⤵
      Modifies firewall policy service
      Modifies security service
      UAC bypass
      Windows security bypass
      Executes dropped EXE
      Drops startup file
      Windows security modification
      Adds Run key to start application
      Checks whether UAC is enabled
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      System policy modification
      PID:716

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Modify Existing Service

T1031

Registry Run Keys / Startup Folder

T1060

Winlogon Helper DLL

T1004

Privilege Escalation

Bypass User Account Control

T1088

Defense Evasion

Bypass User Account Control

T1088

Disabling Security Tools

Modify Registry