Analysis Overview
SHA256
2b16710a962c2676143e1f663626bbd2b8daab3f70718414ce6d2cd534379b7b
Threat Level: Known bad
The file 178db5992b083838ffb393f855bb3038_JaffaCakes118 was found to be: Known bad.
Malicious Activity Summary
Darkcomet family
Darkcomet
Windows security bypass
Modifies security service
Modifies firewall policy service
Modifies WinLogon for persistence
Disables RegEdit via registry modification
Drops file in Drivers directory
Disables Task Manager via registry modification
Checks BIOS information in registry
Deletes itself
Adds Run key to start application
Suspicious use of SetThreadContext
Unsigned PE
Enumerates system info in registry
Suspicious use of AdjustPrivilegeToken
Suspicious behavior: GetForegroundWindowSpam
Suspicious use of WriteProcessMemory
Suspicious use of SetWindowsHookEx
Checks processor information in registry
MITRE ATT&CK
Enterprise Matrix V15
Analysis: static1
Detonation Overview
Reported
2024-06-27 21:14
Signatures
Darkcomet family
Unsigned PE
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Analysis: behavioral1
Detonation Overview
Submitted
2024-06-27 21:14
Reported
2024-06-27 21:17
Platform
win7-20240221-en
Max time kernel
129s
Max time network
140s
Command Line
Signatures
Darkcomet
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:\\Windupdt\\winupdate.exe" | C:\Users\Admin\AppData\Local\Temp\178db5992b083838ffb393f855bb3038_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:\Windows\SysWOW64\explorer.exe | N/A |
| Set value (int) | \REGISTRY\MACHINE\SYSTEM\ControlSet001\services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\DisableNotifications = "0" | C:\Windows\SysWOW64\explorer.exe | N/A |
| Key created | \REGISTRY\MACHINE\SYSTEM\ControlSet001\services\SharedAccess\Parameters\FirewallPolicy\StandardProfile | C:\Windows\SysWOW64\explorer.exe | N/A |
Modifies security service
| Description | Indicator | Process | Target |
| Set value (int) | \REGISTRY\MACHINE\SYSTEM\ControlSet001\services\wscsvc\Start = "4" | C:\Windows\SysWOW64\explorer.exe | N/A |
Windows security bypass
| Description | Indicator | Process | Target |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\UpdatesDisableNotify = "1" | C:\Windows\SysWOW64\explorer.exe | N/A |
Disables RegEdit via registry modification
| Description | Indicator | Process | Target |
| Set value (int) | \REGISTRY\USER\S-1-5-21-2297530677-1229052932-2803917579-1000\Software\Microsoft\Windows\CurrentVersion\Policies\System\DisableRegistryTools = "1" | C:\Windows\SysWOW64\explorer.exe | N/A |
Disables Task Manager via registry modification
Drops file in Drivers directory
| Description | Indicator | Process | Target |
| File opened for modification | C:\Windows\system32\drivers\etc\hosts | C:\Users\Admin\AppData\Local\Temp\178db5992b083838ffb393f855bb3038_JaffaCakes118.exe | N/A |
Checks BIOS information in registry
| Description | Indicator | Process | Target |
| Key value queried | \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosDate | C:\Users\Admin\AppData\Local\Temp\178db5992b083838ffb393f855bb3038_JaffaCakes118.exe | N/A |
| Key value queried | \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosDate | C:\Windows\SysWOW64\explorer.exe | N/A |
Deletes itself
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\notepad.exe | N/A |
Adds Run key to start application
| Description | Indicator | Process | Target |
| Set value (str) | \REGISTRY\USER\S-1-5-21-2297530677-1229052932-2803917579-1000\Software\Microsoft\Windows\CurrentVersion\Run\winupdater = "C:\\Windupdt\\winupdate.exe" | C:\Users\Admin\AppData\Local\Temp\178db5992b083838ffb393f855bb3038_JaffaCakes118.exe | N/A |
| Set value (str) | \REGISTRY\USER\S-1-5-21-2297530677-1229052932-2803917579-1000\Software\Microsoft\Windows\CurrentVersion\Run\winupdater = "C:\\Windupdt\\winupdate.exe" | C:\Windows\SysWOW64\notepad.exe | N/A |
Suspicious use of SetThreadContext
| Description | Indicator | Process | Target |
| PID 1812 set thread context of 2644 | N/A | C:\Users\Admin\AppData\Local\Temp\178db5992b083838ffb393f855bb3038_JaffaCakes118.exe | C:\Windows\SysWOW64\explorer.exe |
Checks processor information in registry
| Description | Indicator | Process | Target |
| Key value queried | \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString | C:\Windows\SysWOW64\explorer.exe | N/A |
| Key value queried | \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Identifier | C:\Windows\SysWOW64\explorer.exe | N/A |
| Key value queried | \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\VendorIdentifier | C:\Windows\SysWOW64\explorer.exe | N/A |
| Key opened | \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0 | C:\Users\Admin\AppData\Local\Temp\178db5992b083838ffb393f855bb3038_JaffaCakes118.exe | N/A |
| Key value queried | \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString | C:\Users\Admin\AppData\Local\Temp\178db5992b083838ffb393f855bb3038_JaffaCakes118.exe | N/A |
| Key value queried | \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Identifier | C:\Users\Admin\AppData\Local\Temp\178db5992b083838ffb393f855bb3038_JaffaCakes118.exe | N/A |
| Key value queried | \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\VendorIdentifier | C:\Users\Admin\AppData\Local\Temp\178db5992b083838ffb393f855bb3038_JaffaCakes118.exe | N/A |
| Key opened | \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0 | C:\Windows\SysWOW64\explorer.exe | N/A |
Enumerates system info in registry
| Description | Indicator | Process | Target |
| Key value queried | \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\Identifier | C:\Users\Admin\AppData\Local\Temp\178db5992b083838ffb393f855bb3038_JaffaCakes118.exe | N/A |
| Key value queried | \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\Identifier | C:\Windows\SysWOW64\explorer.exe | N/A |
Suspicious behavior: GetForegroundWindowSpam
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\explorer.exe | N/A |
Suspicious use of AdjustPrivilegeToken
Suspicious use of SetWindowsHookEx
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\explorer.exe | N/A |
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\178db5992b083838ffb393f855bb3038_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\178db5992b083838ffb393f855bb3038_JaffaCakes118.exe"
C:\Windows\SysWOW64\notepad.exe
notepad
C:\Windows\SysWOW64\explorer.exe
"C:\Windows\SysWOW64\explorer.exe"
C:\Windows\SysWOW64\notepad.exe
C:\Windows\SysWOW64\notepad.exe
Network
| Country | Destination | Domain | Proto |
| N/A | 192.168.1.101:1604 | tcp | |
| N/A | 192.168.1.101:1604 | tcp | |
| N/A | 192.168.1.101:1604 | tcp | |
| N/A | 192.168.1.101:1604 | tcp | |
| N/A | 192.168.1.101:1604 | tcp | |
| N/A | 192.168.1.101:1604 | tcp | |
| N/A | 192.168.1.101:1604 | tcp |
Files
memory/1812-0-0x0000000000510000-0x0000000000511000-memory.dmp
memory/2380-2-0x0000000000100000-0x0000000000101000-memory.dmp
memory/2380-30-0x0000000000280000-0x0000000000281000-memory.dmp
memory/2644-38-0x0000000013140000-0x00000000131F7000-memory.dmp
memory/2708-54-0x0000000000190000-0x0000000000191000-memory.dmp
memory/2644-57-0x0000000013140000-0x00000000131F7000-memory.dmp
memory/2644-33-0x0000000013140000-0x00000000131F7000-memory.dmp
memory/2644-60-0x0000000013140000-0x00000000131F7000-memory.dmp
memory/2644-61-0x0000000013140000-0x00000000131F7000-memory.dmp
memory/2644-63-0x0000000013140000-0x00000000131F7000-memory.dmp
memory/2644-62-0x0000000013140000-0x00000000131F7000-memory.dmp
memory/1812-56-0x0000000013140000-0x00000000131F7000-memory.dmp
memory/2644-55-0x0000000013140000-0x00000000131F7000-memory.dmp
memory/2644-37-0x0000000013140000-0x00000000131F7000-memory.dmp
memory/2644-35-0x000000007EFDE000-0x000000007EFDF000-memory.dmp
memory/2644-64-0x0000000013140000-0x00000000131F7000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2024-06-27 21:14
Reported
2024-06-27 21:17
Platform
win10v2004-20240508-en
Max time kernel
130s
Max time network
153s
Command Line
Signatures
Darkcomet
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:\\Windupdt\\winupdate.exe" | C:\Users\Admin\AppData\Local\Temp\178db5992b083838ffb393f855bb3038_JaffaCakes118.exe | N/A |
Modifies firewall policy service
| Description | Indicator | Process | Target |
| Key created | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile | C:\Windows\SysWOW64\explorer.exe | N/A |
| Set value (int) | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\EnableFirewall = "0" | C:\Windows\SysWOW64\explorer.exe | N/A |
| Set value (int) | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\DisableNotifications = "0" | C:\Windows\SysWOW64\explorer.exe | N/A |
Modifies security service
| Description | Indicator | Process | Target |
| Set value (int) | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\wscsvc\Start = "4" | C:\Windows\SysWOW64\explorer.exe | N/A |
Windows security bypass
| Description | Indicator | Process | Target |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\UpdatesDisableNotify = "1" | C:\Windows\SysWOW64\explorer.exe | N/A |
Disables RegEdit via registry modification
| Description | Indicator | Process | Target |
| Set value (int) | \REGISTRY\USER\S-1-5-21-4124900551-4068476067-3491212533-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\DisableRegistryTools = "1" | C:\Windows\SysWOW64\explorer.exe | N/A |
Disables Task Manager via registry modification
Drops file in Drivers directory
| Description | Indicator | Process | Target |
| File opened for modification | C:\Windows\system32\drivers\etc\hosts | C:\Users\Admin\AppData\Local\Temp\178db5992b083838ffb393f855bb3038_JaffaCakes118.exe | N/A |
Checks BIOS information in registry
| Description | Indicator | Process | Target |
| Key value queried | \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosDate | C:\Users\Admin\AppData\Local\Temp\178db5992b083838ffb393f855bb3038_JaffaCakes118.exe | N/A |
| Key value queried | \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosDate | C:\Windows\SysWOW64\explorer.exe | N/A |
Deletes itself
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\notepad.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\winupdater = "C:\\Windupdt\\winupdate.exe" | C:\Users\Admin\AppData\Local\Temp\178db5992b083838ffb393f855bb3038_JaffaCakes118.exe | N/A |
| Set value (str) | \REGISTRY\USER\S-1-5-21-4124900551-4068476067-3491212533-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\winupdater = "C:\\Windupdt\\winupdate.exe" | C:\Windows\SysWOW64\notepad.exe | N/A |
Suspicious use of SetThreadContext
| Description | Indicator | Process | Target |
| PID 3912 set thread context of 3772 | N/A | C:\Users\Admin\AppData\Local\Temp\178db5992b083838ffb393f855bb3038_JaffaCakes118.exe | C:\Windows\SysWOW64\explorer.exe |
Checks processor information in registry
| Description | Indicator | Process | Target |
| Key value queried | \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Identifier | C:\Users\Admin\AppData\Local\Temp\178db5992b083838ffb393f855bb3038_JaffaCakes118.exe | N/A |
| Key value queried | \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\VendorIdentifier | C:\Users\Admin\AppData\Local\Temp\178db5992b083838ffb393f855bb3038_JaffaCakes118.exe | N/A |
| Key opened | \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0 | C:\Windows\SysWOW64\explorer.exe | N/A |
| Key value queried | \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString | C:\Windows\SysWOW64\explorer.exe | N/A |
| Key value queried | \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Identifier | C:\Windows\SysWOW64\explorer.exe | N/A |
| Key value queried | \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\VendorIdentifier | C:\Windows\SysWOW64\explorer.exe | N/A |
| Key opened | \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0 | C:\Users\Admin\AppData\Local\Temp\178db5992b083838ffb393f855bb3038_JaffaCakes118.exe | N/A |
| Key value queried | \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString | C:\Users\Admin\AppData\Local\Temp\178db5992b083838ffb393f855bb3038_JaffaCakes118.exe | N/A |
Enumerates system info in registry
| Description | Indicator | Process | Target |
| Key value queried | \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\Identifier | C:\Users\Admin\AppData\Local\Temp\178db5992b083838ffb393f855bb3038_JaffaCakes118.exe | N/A |
| Key value queried | \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\Identifier | C:\Windows\SysWOW64\explorer.exe | N/A |
Suspicious behavior: GetForegroundWindowSpam
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\explorer.exe | N/A |
Suspicious use of AdjustPrivilegeToken
Suspicious use of SetWindowsHookEx
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\explorer.exe | N/A |
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\178db5992b083838ffb393f855bb3038_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\178db5992b083838ffb393f855bb3038_JaffaCakes118.exe"
C:\Windows\SysWOW64\notepad.exe
notepad
C:\Windows\SysWOW64\explorer.exe
"C:\Windows\SysWOW64\explorer.exe"
C:\Windows\SysWOW64\notepad.exe
C:\Windows\SysWOW64\notepad.exe
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | 217.106.137.52.in-addr.arpa | udp |
| N/A | 192.168.1.101:1604 | tcp | |
| US | 8.8.8.8:53 | 82.90.14.23.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 76.32.126.40.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 58.55.71.13.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 149.220.183.52.in-addr.arpa | udp |
| N/A | 192.168.1.101:1604 | tcp | |
| US | 8.8.8.8:53 | 183.59.114.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 15.164.165.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 99.58.20.217.in-addr.arpa | udp |
| N/A | 192.168.1.101:1604 | tcp | |
| US | 8.8.8.8:53 | 73.144.22.2.in-addr.arpa | udp |
| N/A | 192.168.1.101:1604 | tcp | |
| N/A | 192.168.1.101:1604 | tcp | |
| US | 8.8.8.8:53 | 172.214.232.199.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 13.227.111.52.in-addr.arpa | udp |
| N/A | 192.168.1.101:1604 | tcp | |
| N/A | 192.168.1.101:1604 | tcp |
Files
memory/3912-0-0x00000000020C0000-0x00000000020C1000-memory.dmp
memory/5052-2-0x0000000000490000-0x0000000000491000-memory.dmp
memory/3772-6-0x0000000013140000-0x00000000131F7000-memory.dmp
memory/3576-8-0x00000000004A0000-0x00000000004A1000-memory.dmp
memory/3772-7-0x0000000013140000-0x00000000131F7000-memory.dmp
memory/3772-9-0x0000000013140000-0x00000000131F7000-memory.dmp
memory/3772-13-0x0000000013140000-0x00000000131F7000-memory.dmp
memory/3772-15-0x0000000013140000-0x00000000131F7000-memory.dmp
memory/3772-16-0x0000000000CF0000-0x0000000000CF1000-memory.dmp
memory/3772-12-0x0000000013140000-0x00000000131F7000-memory.dmp
memory/3912-11-0x0000000013140000-0x00000000131F7000-memory.dmp
memory/3772-14-0x0000000013140000-0x00000000131F7000-memory.dmp
memory/3772-10-0x0000000013140000-0x00000000131F7000-memory.dmp
memory/3772-18-0x0000000013140000-0x00000000131F7000-memory.dmp