Analysis Overview
SHA256
0dbbf8345aaf2a9d57bd4ced5b456cb34f789ae813206a8eb18abeb5dadd6eab
Threat Level: Known bad
The file 0dbbf8345aaf2a9d57bd4ced5b456cb34f789ae813206a8eb18abeb5dadd6eab was found to be: Known bad.
Malicious Activity Summary
Windows security bypass
Modifies firewall policy service
Modifies security service
Darkcomet family
Modifies WinLogon for persistence
Darkcomet
Checks BIOS information in registry
Adds Run key to start application
Suspicious use of SetThreadContext
Drops file in System32 directory
Checks processor information in registry
Suspicious use of AdjustPrivilegeToken
Suspicious behavior: GetForegroundWindowSpam
Suspicious use of WriteProcessMemory
Enumerates system info in registry
Suspicious use of SetWindowsHookEx
MITRE ATT&CK
Enterprise Matrix V6
Analysis: static1
Detonation Overview
Reported
2022-10-11 02:20
Signatures
Darkcomet family
Analysis: behavioral1
Detonation Overview
Submitted
2022-10-11 02:20
Reported
2022-10-11 03:17
Platform
win7-20220812-en
Max time kernel
152s
Max time network
47s
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:\\Windows\\system32\\Windupdt\\svchost.exe" | C:\Users\Admin\AppData\Local\Temp\0dbbf8345aaf2a9d57bd4ced5b456cb34f789ae813206a8eb18abeb5dadd6eab.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\AntiVirusDisableNotify = "1" | C:\Windows\SysWOW64\explorer.exe | N/A |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\UpdatesDisableNotify = "1" | C:\Windows\SysWOW64\explorer.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\0dbbf8345aaf2a9d57bd4ced5b456cb34f789ae813206a8eb18abeb5dadd6eab.exe | N/A |
| Key value queried | \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosDate | C:\Windows\SysWOW64\explorer.exe | N/A |
Adds Run key to start application
| Description | Indicator | Process | Target |
| Set value (str) | \REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows\CurrentVersion\Run\winupdater = "C:\\Windows\\system32\\Windupdt\\svchost.exe" | C:\Users\Admin\AppData\Local\Temp\0dbbf8345aaf2a9d57bd4ced5b456cb34f789ae813206a8eb18abeb5dadd6eab.exe | N/A |
| Set value (str) | \REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows\CurrentVersion\Run\winupdater = "C:\\Windows\\system32\\Windupdt\\svchost.exe" | C:\Windows\SysWOW64\notepad.exe | N/A |
Drops file in System32 directory
| Description | Indicator | Process | Target |
| File created | C:\Windows\SysWOW64\Windupdt\svchost.exe | C:\Users\Admin\AppData\Local\Temp\0dbbf8345aaf2a9d57bd4ced5b456cb34f789ae813206a8eb18abeb5dadd6eab.exe | N/A |
| File opened for modification | C:\Windows\SysWOW64\Windupdt\svchost.exe | C:\Users\Admin\AppData\Local\Temp\0dbbf8345aaf2a9d57bd4ced5b456cb34f789ae813206a8eb18abeb5dadd6eab.exe | N/A |
| File opened for modification | C:\Windows\SysWOW64\Windupdt\ | C:\Users\Admin\AppData\Local\Temp\0dbbf8345aaf2a9d57bd4ced5b456cb34f789ae813206a8eb18abeb5dadd6eab.exe | N/A |
| File created | C:\Windows\SysWOW64\Windupdt\svchost.exe | C:\Windows\SysWOW64\notepad.exe | N/A |
Suspicious use of SetThreadContext
| Description | Indicator | Process | Target |
| PID 1072 set thread context of 1148 | N/A | C:\Users\Admin\AppData\Local\Temp\0dbbf8345aaf2a9d57bd4ced5b456cb34f789ae813206a8eb18abeb5dadd6eab.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:\Users\Admin\AppData\Local\Temp\0dbbf8345aaf2a9d57bd4ced5b456cb34f789ae813206a8eb18abeb5dadd6eab.exe | N/A |
| Key value queried | \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Identifier | C:\Users\Admin\AppData\Local\Temp\0dbbf8345aaf2a9d57bd4ced5b456cb34f789ae813206a8eb18abeb5dadd6eab.exe | N/A |
| Key value queried | \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\VendorIdentifier | C:\Users\Admin\AppData\Local\Temp\0dbbf8345aaf2a9d57bd4ced5b456cb34f789ae813206a8eb18abeb5dadd6eab.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\0dbbf8345aaf2a9d57bd4ced5b456cb34f789ae813206a8eb18abeb5dadd6eab.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\0dbbf8345aaf2a9d57bd4ced5b456cb34f789ae813206a8eb18abeb5dadd6eab.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\0dbbf8345aaf2a9d57bd4ced5b456cb34f789ae813206a8eb18abeb5dadd6eab.exe
"C:\Users\Admin\AppData\Local\Temp\0dbbf8345aaf2a9d57bd4ced5b456cb34f789ae813206a8eb18abeb5dadd6eab.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 | xinod.serveblog.net | udp |
Files
memory/1072-54-0x0000000074C91000-0x0000000074C93000-memory.dmp
memory/1144-55-0x0000000000000000-mapping.dmp
memory/1148-57-0x0000000013140000-0x00000000131FF000-memory.dmp
memory/1148-59-0x0000000013140000-0x00000000131FF000-memory.dmp
memory/1148-60-0x00000000131D08B4-mapping.dmp
memory/1148-61-0x0000000013140000-0x00000000131FF000-memory.dmp
memory/1148-63-0x0000000013140000-0x00000000131FF000-memory.dmp
memory/1376-64-0x0000000000000000-mapping.dmp
memory/1148-66-0x0000000013140000-0x00000000131FF000-memory.dmp
memory/1148-67-0x0000000013140000-0x00000000131FF000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2022-10-11 02:20
Reported
2022-10-11 03:17
Platform
win10v2004-20220901-en
Max time kernel
151s
Max time network
156s
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:\\Windows\\system32\\Windupdt\\svchost.exe" | C:\Users\Admin\AppData\Local\Temp\0dbbf8345aaf2a9d57bd4ced5b456cb34f789ae813206a8eb18abeb5dadd6eab.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\AntiVirusDisableNotify = "1" | C:\Windows\SysWOW64\explorer.exe | N/A |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\UpdatesDisableNotify = "1" | C:\Windows\SysWOW64\explorer.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\0dbbf8345aaf2a9d57bd4ced5b456cb34f789ae813206a8eb18abeb5dadd6eab.exe | N/A |
| Key value queried | \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosDate | C:\Windows\SysWOW64\explorer.exe | N/A |
Adds Run key to start application
| Description | Indicator | Process | Target |
| Set value (str) | \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\winupdater = "C:\\Windows\\system32\\Windupdt\\svchost.exe" | C:\Users\Admin\AppData\Local\Temp\0dbbf8345aaf2a9d57bd4ced5b456cb34f789ae813206a8eb18abeb5dadd6eab.exe | N/A |
| Set value (str) | \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\winupdater = "C:\\Windows\\system32\\Windupdt\\svchost.exe" | C:\Windows\SysWOW64\notepad.exe | N/A |
Drops file in System32 directory
| Description | Indicator | Process | Target |
| File created | C:\Windows\SysWOW64\Windupdt\svchost.exe | C:\Users\Admin\AppData\Local\Temp\0dbbf8345aaf2a9d57bd4ced5b456cb34f789ae813206a8eb18abeb5dadd6eab.exe | N/A |
| File opened for modification | C:\Windows\SysWOW64\Windupdt\svchost.exe | C:\Users\Admin\AppData\Local\Temp\0dbbf8345aaf2a9d57bd4ced5b456cb34f789ae813206a8eb18abeb5dadd6eab.exe | N/A |
| File opened for modification | C:\Windows\SysWOW64\Windupdt\ | C:\Users\Admin\AppData\Local\Temp\0dbbf8345aaf2a9d57bd4ced5b456cb34f789ae813206a8eb18abeb5dadd6eab.exe | N/A |
| File created | C:\Windows\SysWOW64\Windupdt\svchost.exe | C:\Windows\SysWOW64\notepad.exe | N/A |
Suspicious use of SetThreadContext
| Description | Indicator | Process | Target |
| PID 2708 set thread context of 3624 | N/A | C:\Users\Admin\AppData\Local\Temp\0dbbf8345aaf2a9d57bd4ced5b456cb34f789ae813206a8eb18abeb5dadd6eab.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\0dbbf8345aaf2a9d57bd4ced5b456cb34f789ae813206a8eb18abeb5dadd6eab.exe | N/A |
| Key value queried | \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString | C:\Users\Admin\AppData\Local\Temp\0dbbf8345aaf2a9d57bd4ced5b456cb34f789ae813206a8eb18abeb5dadd6eab.exe | N/A |
| Key value queried | \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Identifier | C:\Users\Admin\AppData\Local\Temp\0dbbf8345aaf2a9d57bd4ced5b456cb34f789ae813206a8eb18abeb5dadd6eab.exe | N/A |
| Key value queried | \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\VendorIdentifier | C:\Users\Admin\AppData\Local\Temp\0dbbf8345aaf2a9d57bd4ced5b456cb34f789ae813206a8eb18abeb5dadd6eab.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:\Windows\SysWOW64\explorer.exe | N/A |
| Key value queried | \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\Identifier | C:\Users\Admin\AppData\Local\Temp\0dbbf8345aaf2a9d57bd4ced5b456cb34f789ae813206a8eb18abeb5dadd6eab.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\0dbbf8345aaf2a9d57bd4ced5b456cb34f789ae813206a8eb18abeb5dadd6eab.exe
"C:\Users\Admin\AppData\Local\Temp\0dbbf8345aaf2a9d57bd4ced5b456cb34f789ae813206a8eb18abeb5dadd6eab.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 | 209.197.3.8:80 | tcp | |
| US | 8.8.8.8:53 | xinod.serveblog.net | udp |
| US | 8.8.8.8:53 | xinod.serveblog.net | udp |
| US | 209.197.3.8:80 | tcp | |
| FR | 2.18.109.224:443 | tcp | |
| US | 8.8.8.8:53 | xinod.serveblog.net | udp |
| US | 8.8.8.8:53 | xinod.serveblog.net | udp |
| US | 209.197.3.8:80 | tcp | |
| US | 209.197.3.8:80 | tcp | |
| US | 209.197.3.8:80 | tcp | |
| US | 8.8.8.8:53 | xinod.serveblog.net | udp |
| US | 8.8.8.8:53 | xinod.serveblog.net | udp |
| US | 8.8.8.8:53 | xinod.serveblog.net | udp |
| US | 8.8.8.8:53 | xinod.serveblog.net | udp |
| US | 8.8.8.8:53 | xinod.serveblog.net | udp |
| US | 8.8.8.8:53 | xinod.serveblog.net | udp |
| US | 8.8.8.8:53 | xinod.serveblog.net | udp |
| US | 8.8.8.8:53 | xinod.serveblog.net | udp |
| US | 8.8.8.8:53 | xinod.serveblog.net | udp |
| US | 8.8.8.8:53 | xinod.serveblog.net | udp |
| US | 8.8.8.8:53 | xinod.serveblog.net | udp |
| US | 8.8.8.8:53 | xinod.serveblog.net | udp |
| US | 8.8.8.8:53 | xinod.serveblog.net | udp |
| US | 8.8.8.8:53 | xinod.serveblog.net | udp |
| US | 8.8.8.8:53 | xinod.serveblog.net | udp |
| US | 8.8.8.8:53 | xinod.serveblog.net | udp |
| US | 8.8.8.8:53 | xinod.serveblog.net | udp |
| US | 8.8.8.8:53 | xinod.serveblog.net | udp |
| US | 8.8.8.8:53 | xinod.serveblog.net | udp |
| US | 8.8.8.8:53 | xinod.serveblog.net | udp |
| US | 8.8.8.8:53 | xinod.serveblog.net | udp |
| US | 8.8.8.8:53 | xinod.serveblog.net | udp |
| US | 8.8.8.8:53 | xinod.serveblog.net | udp |
| US | 8.8.8.8:53 | xinod.serveblog.net | udp |
| US | 8.8.8.8:53 | xinod.serveblog.net | udp |
| US | 8.8.8.8:53 | xinod.serveblog.net | udp |
Files
memory/5020-132-0x0000000000000000-mapping.dmp
memory/3624-133-0x0000000000000000-mapping.dmp
memory/3624-134-0x0000000013140000-0x00000000131FF000-memory.dmp
memory/3624-135-0x0000000013140000-0x00000000131FF000-memory.dmp
memory/3624-136-0x0000000013140000-0x00000000131FF000-memory.dmp
memory/2292-137-0x0000000000000000-mapping.dmp
memory/3624-138-0x0000000013140000-0x00000000131FF000-memory.dmp
memory/3624-139-0x0000000013140000-0x00000000131FF000-memory.dmp