Analysis Overview
SHA256
0ba5316465a017586abd9cae225713d848097e07a6ca673aa5150c7c5c38f3ff
Threat Level: Known bad
The file b238789b81c0072f170d0e067a2914e5_JaffaCakes118 was found to be: Known bad.
Malicious Activity Summary
Modifies firewall policy service
Modifies WinLogon for persistence
UAC bypass
Modifies security service
Windows security bypass
Ramnit
Drops startup file
UPX packed file
Windows security modification
Checks whether UAC is enabled
Adds Run key to start application
Suspicious use of SetThreadContext
Unsigned PE
Suspicious use of WriteProcessMemory
Suspicious use of AdjustPrivilegeToken
Suspicious behavior: EnumeratesProcesses
System policy modification
MITRE ATT&CK
Enterprise Matrix V15
Analysis: static1
Detonation Overview
Reported
2024-06-16 06:52
Signatures
Unsigned PE
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Analysis: behavioral1
Detonation Overview
Submitted
2024-06-16 06:52
Reported
2024-06-16 06:52
Platform
win7-20240508-en
Max time kernel
2s
Max time network
0s
Command Line
Signatures
Modifies WinLogon for persistence
| Description | Indicator | Process | Target |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\Userinit = "C:\\Windows\\system32\\userinit.exe,,C:\\Users\\Admin\\AppData\\Local\\nhxbjnmc\\vnprfsty.exe" | C:\Users\Admin\AppData\Local\Temp\b238789b81c0072f170d0e067a2914e5_JaffaCakes118.exe | N/A |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\Userinit = "userinit.exe,C:\\Users\\Admin\\AppData\\Local\\nhxbjnmc\\vnprfsty.exe" | C:\Users\Admin\AppData\Local\Temp\b238789b81c0072f170d0e067a2914e5_JaffaCakes118.exe | N/A |
Modifies firewall policy service
| Description | Indicator | Process | Target |
| Set value (int) | \REGISTRY\MACHINE\SYSTEM\ControlSet001\services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\DisableNotifications = "1" | C:\Users\Admin\AppData\Local\Temp\b238789b81c0072f170d0e067a2914e5_JaffaCakes118.exe | N/A |
| Set value (int) | \REGISTRY\MACHINE\SYSTEM\ControlSet001\services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\EnableFirewall = "0" | C:\Users\Admin\AppData\Local\Temp\b238789b81c0072f170d0e067a2914e5_JaffaCakes118.exe | N/A |
| Set value (int) | \REGISTRY\MACHINE\SYSTEM\ControlSet001\services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\DoNotAllowExceptions = "0" | C:\Users\Admin\AppData\Local\Temp\b238789b81c0072f170d0e067a2914e5_JaffaCakes118.exe | N/A |
Modifies security service
| Description | Indicator | Process | Target |
| Set value (int) | \REGISTRY\MACHINE\SYSTEM\ControlSet001\services\wscsvc\Start = "4" | C:\Users\Admin\AppData\Local\Temp\b238789b81c0072f170d0e067a2914e5_JaffaCakes118.exe | N/A |
| Set value (int) | \REGISTRY\MACHINE\SYSTEM\ControlSet001\services\MpsSvc\Start = "4" | C:\Users\Admin\AppData\Local\Temp\b238789b81c0072f170d0e067a2914e5_JaffaCakes118.exe | N/A |
| Set value (int) | \REGISTRY\MACHINE\SYSTEM\ControlSet001\services\WinDefend\Start = "4" | C:\Users\Admin\AppData\Local\Temp\b238789b81c0072f170d0e067a2914e5_JaffaCakes118.exe | N/A |
| Set value (int) | \REGISTRY\MACHINE\SYSTEM\ControlSet001\services\wuauserv\Start = "4" | C:\Users\Admin\AppData\Local\Temp\b238789b81c0072f170d0e067a2914e5_JaffaCakes118.exe | N/A |
Ramnit
UAC bypass
| Description | Indicator | Process | Target |
| Set value (int) | \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0" | C:\Users\Admin\AppData\Local\Temp\b238789b81c0072f170d0e067a2914e5_JaffaCakes118.exe | N/A |
Windows security bypass
| Description | Indicator | Process | Target |
| Set value (int) | \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\AntiVirusDisableNotify = "1" | C:\Users\Admin\AppData\Local\Temp\b238789b81c0072f170d0e067a2914e5_JaffaCakes118.exe | N/A |
| Set value (int) | \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\FirewallDisableNotify = "1" | C:\Users\Admin\AppData\Local\Temp\b238789b81c0072f170d0e067a2914e5_JaffaCakes118.exe | N/A |
| Set value (int) | \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\FirewallOverride = "1" | C:\Users\Admin\AppData\Local\Temp\b238789b81c0072f170d0e067a2914e5_JaffaCakes118.exe | N/A |
| Set value (int) | \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\UpdatesDisableNotify = "1" | C:\Users\Admin\AppData\Local\Temp\b238789b81c0072f170d0e067a2914e5_JaffaCakes118.exe | N/A |
| Set value (int) | \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\UacDisableNotify = "1" | C:\Users\Admin\AppData\Local\Temp\b238789b81c0072f170d0e067a2914e5_JaffaCakes118.exe | N/A |
| Set value (int) | \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\AntiVirusOverride = "1" | C:\Users\Admin\AppData\Local\Temp\b238789b81c0072f170d0e067a2914e5_JaffaCakes118.exe | N/A |
Drops startup file
| Description | Indicator | Process | Target |
| File opened for modification | C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\vnprfsty.exe | C:\Users\Admin\AppData\Local\Temp\b238789b81c0072f170d0e067a2914e5_JaffaCakes118.exe | N/A |
| File created | C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\vnprfsty.exe | C:\Users\Admin\AppData\Local\Temp\b238789b81c0072f170d0e067a2914e5_JaffaCakes118.exe | N/A |
UPX packed file
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
Windows security modification
| Description | Indicator | Process | Target |
| Set value (int) | \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\FirewallOverride = "1" | C:\Users\Admin\AppData\Local\Temp\b238789b81c0072f170d0e067a2914e5_JaffaCakes118.exe | N/A |
| Set value (int) | \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\UpdatesDisableNotify = "1" | C:\Users\Admin\AppData\Local\Temp\b238789b81c0072f170d0e067a2914e5_JaffaCakes118.exe | N/A |
| Set value (int) | \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\UacDisableNotify = "1" | C:\Users\Admin\AppData\Local\Temp\b238789b81c0072f170d0e067a2914e5_JaffaCakes118.exe | N/A |
| Set value (int) | \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\AntiVirusOverride = "1" | C:\Users\Admin\AppData\Local\Temp\b238789b81c0072f170d0e067a2914e5_JaffaCakes118.exe | N/A |
| Set value (int) | \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\AntiVirusDisableNotify = "1" | C:\Users\Admin\AppData\Local\Temp\b238789b81c0072f170d0e067a2914e5_JaffaCakes118.exe | N/A |
| Set value (int) | \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\FirewallDisableNotify = "1" | C:\Users\Admin\AppData\Local\Temp\b238789b81c0072f170d0e067a2914e5_JaffaCakes118.exe | N/A |
Adds Run key to start application
| Description | Indicator | Process | Target |
| Set value (str) | \REGISTRY\USER\S-1-5-21-268080393-3149932598-1824759070-1000\Software\Microsoft\Windows\CurrentVersion\Run\VnpRfsty = "C:\\Users\\Admin\\AppData\\Local\\nhxbjnmc\\vnprfsty.exe" | C:\Users\Admin\AppData\Local\Temp\b238789b81c0072f170d0e067a2914e5_JaffaCakes118.exe | N/A |
Checks whether UAC is enabled
| Description | Indicator | Process | Target |
| Set value (int) | \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0" | C:\Users\Admin\AppData\Local\Temp\b238789b81c0072f170d0e067a2914e5_JaffaCakes118.exe | N/A |
Suspicious use of SetThreadContext
| Description | Indicator | Process | Target |
| PID 848 set thread context of 2068 | N/A | C:\Users\Admin\AppData\Local\Temp\b238789b81c0072f170d0e067a2914e5_JaffaCakes118.exe | C:\Users\Admin\AppData\Local\Temp\b238789b81c0072f170d0e067a2914e5_JaffaCakes118.exe |
Suspicious behavior: EnumeratesProcesses
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\b238789b81c0072f170d0e067a2914e5_JaffaCakes118.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\b238789b81c0072f170d0e067a2914e5_JaffaCakes118.exe | N/A |
Suspicious use of AdjustPrivilegeToken
| Description | Indicator | Process | Target |
| Token: SeSecurityPrivilege | N/A | C:\Users\Admin\AppData\Local\Temp\b238789b81c0072f170d0e067a2914e5_JaffaCakes118.exe | N/A |
| Token: SeRestorePrivilege | N/A | C:\Users\Admin\AppData\Local\Temp\b238789b81c0072f170d0e067a2914e5_JaffaCakes118.exe | N/A |
| Token: SeBackupPrivilege | N/A | C:\Users\Admin\AppData\Local\Temp\b238789b81c0072f170d0e067a2914e5_JaffaCakes118.exe | N/A |
| Token: SeShutdownPrivilege | N/A | C:\Users\Admin\AppData\Local\Temp\b238789b81c0072f170d0e067a2914e5_JaffaCakes118.exe | N/A |
Suspicious use of WriteProcessMemory
System policy modification
| Description | Indicator | Process | Target |
| Set value (int) | \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0" | C:\Users\Admin\AppData\Local\Temp\b238789b81c0072f170d0e067a2914e5_JaffaCakes118.exe | N/A |
Processes
C:\Users\Admin\AppData\Local\Temp\b238789b81c0072f170d0e067a2914e5_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\b238789b81c0072f170d0e067a2914e5_JaffaCakes118.exe"
C:\Users\Admin\AppData\Local\Temp\b238789b81c0072f170d0e067a2914e5_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\b238789b81c0072f170d0e067a2914e5_JaffaCakes118.exe"
Network
Files
memory/848-1-0x0000000000580000-0x0000000000680000-memory.dmp
memory/2068-4-0x0000000015190000-0x00000000151CD000-memory.dmp
memory/2068-2-0x000000007EFDE000-0x000000007EFDF000-memory.dmp
memory/2068-8-0x0000000015190000-0x00000000151CD000-memory.dmp
memory/2068-7-0x0000000015190000-0x00000000151CD000-memory.dmp
memory/2068-6-0x0000000015190000-0x00000000151CD000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2024-06-16 06:52
Reported
2024-06-16 06:55
Platform
win10v2004-20240508-en
Max time kernel
51s
Max time network
51s
Command Line
Signatures
Modifies WinLogon for persistence
| Description | Indicator | Process | Target |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\Userinit = "C:\\Windows\\system32\\userinit.exe,,C:\\Users\\Admin\\AppData\\Local\\jfybxpmf\\olqnipvv.exe" | C:\Users\Admin\AppData\Local\Temp\b238789b81c0072f170d0e067a2914e5_JaffaCakes118.exe | N/A |
Modifies firewall policy service
| Description | Indicator | Process | Target |
| Set value (int) | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\EnableFirewall = "0" | C:\Users\Admin\AppData\Local\Temp\b238789b81c0072f170d0e067a2914e5_JaffaCakes118.exe | N/A |
| Set value (int) | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\DoNotAllowExceptions = "0" | C:\Users\Admin\AppData\Local\Temp\b238789b81c0072f170d0e067a2914e5_JaffaCakes118.exe | N/A |
| Set value (int) | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\DisableNotifications = "1" | C:\Users\Admin\AppData\Local\Temp\b238789b81c0072f170d0e067a2914e5_JaffaCakes118.exe | N/A |
Modifies security service
| Description | Indicator | Process | Target |
| Set value (int) | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\wscsvc\Start = "4" | C:\Users\Admin\AppData\Local\Temp\b238789b81c0072f170d0e067a2914e5_JaffaCakes118.exe | N/A |
| Set value (int) | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\mpssvc\Start = "4" | C:\Users\Admin\AppData\Local\Temp\b238789b81c0072f170d0e067a2914e5_JaffaCakes118.exe | N/A |
| Set value (int) | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\wuauserv\Start = "4" | C:\Users\Admin\AppData\Local\Temp\b238789b81c0072f170d0e067a2914e5_JaffaCakes118.exe | N/A |
Ramnit
UAC bypass
| Description | Indicator | Process | Target |
| Set value (int) | \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0" | C:\Users\Admin\AppData\Local\Temp\b238789b81c0072f170d0e067a2914e5_JaffaCakes118.exe | N/A |
Windows security bypass
| Description | Indicator | Process | Target |
| Set value (int) | \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\UpdatesDisableNotify = "1" | C:\Users\Admin\AppData\Local\Temp\b238789b81c0072f170d0e067a2914e5_JaffaCakes118.exe | N/A |
| Set value (int) | \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\UacDisableNotify = "1" | C:\Users\Admin\AppData\Local\Temp\b238789b81c0072f170d0e067a2914e5_JaffaCakes118.exe | N/A |
| Set value (int) | \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\AntiVirusOverride = "1" | C:\Users\Admin\AppData\Local\Temp\b238789b81c0072f170d0e067a2914e5_JaffaCakes118.exe | N/A |
| Set value (int) | \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\AntiVirusDisableNotify = "1" | C:\Users\Admin\AppData\Local\Temp\b238789b81c0072f170d0e067a2914e5_JaffaCakes118.exe | N/A |
| Set value (int) | \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\FirewallDisableNotify = "1" | C:\Users\Admin\AppData\Local\Temp\b238789b81c0072f170d0e067a2914e5_JaffaCakes118.exe | N/A |
| Set value (int) | \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\FirewallOverride = "1" | C:\Users\Admin\AppData\Local\Temp\b238789b81c0072f170d0e067a2914e5_JaffaCakes118.exe | N/A |
Drops startup file
| Description | Indicator | Process | Target |
| File opened for modification | C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\olqnipvv.exe | C:\Users\Admin\AppData\Local\Temp\b238789b81c0072f170d0e067a2914e5_JaffaCakes118.exe | N/A |
| File created | C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\olqnipvv.exe | C:\Users\Admin\AppData\Local\Temp\b238789b81c0072f170d0e067a2914e5_JaffaCakes118.exe | N/A |
UPX packed file
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
Windows security modification
| Description | Indicator | Process | Target |
| Set value (int) | \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\UpdatesDisableNotify = "1" | C:\Users\Admin\AppData\Local\Temp\b238789b81c0072f170d0e067a2914e5_JaffaCakes118.exe | N/A |
| Set value (int) | \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\UacDisableNotify = "1" | C:\Users\Admin\AppData\Local\Temp\b238789b81c0072f170d0e067a2914e5_JaffaCakes118.exe | N/A |
| Set value (int) | \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\AntiVirusOverride = "1" | C:\Users\Admin\AppData\Local\Temp\b238789b81c0072f170d0e067a2914e5_JaffaCakes118.exe | N/A |
| Set value (int) | \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\AntiVirusDisableNotify = "1" | C:\Users\Admin\AppData\Local\Temp\b238789b81c0072f170d0e067a2914e5_JaffaCakes118.exe | N/A |
| Set value (int) | \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\FirewallDisableNotify = "1" | C:\Users\Admin\AppData\Local\Temp\b238789b81c0072f170d0e067a2914e5_JaffaCakes118.exe | N/A |
| Set value (int) | \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\FirewallOverride = "1" | C:\Users\Admin\AppData\Local\Temp\b238789b81c0072f170d0e067a2914e5_JaffaCakes118.exe | N/A |
Adds Run key to start application
| Description | Indicator | Process | Target |
| Set value (str) | \REGISTRY\USER\S-1-5-21-4124900551-4068476067-3491212533-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\OlqNipvv = "C:\\Users\\Admin\\AppData\\Local\\jfybxpmf\\olqnipvv.exe" | C:\Users\Admin\AppData\Local\Temp\b238789b81c0072f170d0e067a2914e5_JaffaCakes118.exe | N/A |
Checks whether UAC is enabled
| Description | Indicator | Process | Target |
| Set value (int) | \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0" | C:\Users\Admin\AppData\Local\Temp\b238789b81c0072f170d0e067a2914e5_JaffaCakes118.exe | N/A |
Suspicious use of SetThreadContext
| Description | Indicator | Process | Target |
| PID 1928 set thread context of 4356 | N/A | C:\Users\Admin\AppData\Local\Temp\b238789b81c0072f170d0e067a2914e5_JaffaCakes118.exe | C:\Users\Admin\AppData\Local\Temp\b238789b81c0072f170d0e067a2914e5_JaffaCakes118.exe |
Suspicious behavior: EnumeratesProcesses
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\b238789b81c0072f170d0e067a2914e5_JaffaCakes118.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\b238789b81c0072f170d0e067a2914e5_JaffaCakes118.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\b238789b81c0072f170d0e067a2914e5_JaffaCakes118.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\b238789b81c0072f170d0e067a2914e5_JaffaCakes118.exe | N/A |
Suspicious use of AdjustPrivilegeToken
| Description | Indicator | Process | Target |
| Token: SeSecurityPrivilege | N/A | C:\Users\Admin\AppData\Local\Temp\b238789b81c0072f170d0e067a2914e5_JaffaCakes118.exe | N/A |
Suspicious use of WriteProcessMemory
System policy modification
| Description | Indicator | Process | Target |
| Set value (int) | \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0" | C:\Users\Admin\AppData\Local\Temp\b238789b81c0072f170d0e067a2914e5_JaffaCakes118.exe | N/A |
Processes
C:\Users\Admin\AppData\Local\Temp\b238789b81c0072f170d0e067a2914e5_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\b238789b81c0072f170d0e067a2914e5_JaffaCakes118.exe"
C:\Users\Admin\AppData\Local\Temp\b238789b81c0072f170d0e067a2914e5_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\b238789b81c0072f170d0e067a2914e5_JaffaCakes118.exe"
Network
Files
memory/1928-1-0x0000000000630000-0x0000000000730000-memory.dmp
memory/4356-2-0x0000000015190000-0x00000000151CD000-memory.dmp
memory/4356-4-0x0000000015190000-0x00000000151CD000-memory.dmp
memory/4356-5-0x0000000015190000-0x00000000151CD000-memory.dmp
memory/4356-6-0x0000000015190000-0x00000000151CD000-memory.dmp
memory/4356-10-0x0000000015190000-0x00000000151CD000-memory.dmp