Analysis Overview
SHA256
7af7f19c903eaa61de12499bb36d0cc8f58706f1b76a62b168c522bca71d361b
Threat Level: Known bad
The file 7af7f19c903eaa61de12499bb36d0cc8f58706f1b76a62b168c522bca71d361b was found to be: Known bad.
Malicious Activity Summary
Darkcomet family
Windows security bypass
Modifies security service
Modifies firewall policy service
Darkcomet
Modifies WinLogon for persistence
Disables RegEdit via registry modification
Checks BIOS information in registry
Adds Run key to start application
Suspicious use of SetThreadContext
Program crash
Suspicious use of SetWindowsHookEx
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Suspicious behavior: GetForegroundWindowSpam
Checks processor information in registry
Enumerates system info in registry
MITRE ATT&CK
Enterprise Matrix V6
Analysis: static1
Detonation Overview
Reported
2022-10-19 13:50
Signatures
Darkcomet family
Analysis: behavioral1
Detonation Overview
Submitted
2022-10-19 13:50
Reported
2022-10-19 14:44
Platform
win7-20220901-en
Max time kernel
152s
Max time network
48s
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\7af7f19c903eaa61de12499bb36d0cc8f58706f1b76a62b168c522bca71d361b.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 |
Disables RegEdit via registry modification
| Description | Indicator | Process | Target |
| Set value (int) | \REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Windows\CurrentVersion\Policies\System\DisableRegistryTools = "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\7af7f19c903eaa61de12499bb36d0cc8f58706f1b76a62b168c522bca71d361b.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-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Windows\CurrentVersion\Run\winupdater = "C:\\Windupdt\\winupdate.exe" | C:\Users\Admin\AppData\Local\Temp\7af7f19c903eaa61de12499bb36d0cc8f58706f1b76a62b168c522bca71d361b.exe | N/A |
| Set value (str) | \REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\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 1752 set thread context of 1028 | N/A | C:\Users\Admin\AppData\Local\Temp\7af7f19c903eaa61de12499bb36d0cc8f58706f1b76a62b168c522bca71d361b.exe | C:\Windows\SysWOW64\explorer.exe |
Checks processor information in registry
| Description | Indicator | Process | Target |
| Key opened | \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0 | C:\Users\Admin\AppData\Local\Temp\7af7f19c903eaa61de12499bb36d0cc8f58706f1b76a62b168c522bca71d361b.exe | N/A |
| Key value queried | \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString | C:\Users\Admin\AppData\Local\Temp\7af7f19c903eaa61de12499bb36d0cc8f58706f1b76a62b168c522bca71d361b.exe | N/A |
| Key value queried | \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Identifier | C:\Users\Admin\AppData\Local\Temp\7af7f19c903eaa61de12499bb36d0cc8f58706f1b76a62b168c522bca71d361b.exe | N/A |
| Key value queried | \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\VendorIdentifier | C:\Users\Admin\AppData\Local\Temp\7af7f19c903eaa61de12499bb36d0cc8f58706f1b76a62b168c522bca71d361b.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 |
Enumerates system info in registry
| Description | Indicator | Process | Target |
| Key value queried | \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\Identifier | C:\Users\Admin\AppData\Local\Temp\7af7f19c903eaa61de12499bb36d0cc8f58706f1b76a62b168c522bca71d361b.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\7af7f19c903eaa61de12499bb36d0cc8f58706f1b76a62b168c522bca71d361b.exe
"C:\Users\Admin\AppData\Local\Temp\7af7f19c903eaa61de12499bb36d0cc8f58706f1b76a62b168c522bca71d361b.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 | lucasgrohl.no-ip.org | udp |
Files
memory/1752-54-0x0000000075111000-0x0000000075113000-memory.dmp
memory/1584-55-0x0000000000000000-mapping.dmp
memory/1028-57-0x0000000013140000-0x00000000131F7000-memory.dmp
memory/1028-59-0x0000000013140000-0x00000000131F7000-memory.dmp
memory/1028-60-0x00000000131D08B4-mapping.dmp
memory/1692-64-0x0000000000000000-mapping.dmp
memory/1028-63-0x0000000013140000-0x00000000131F7000-memory.dmp
memory/1028-61-0x0000000013140000-0x00000000131F7000-memory.dmp
memory/1028-66-0x0000000013140000-0x00000000131F7000-memory.dmp
memory/1028-67-0x0000000013140000-0x00000000131F7000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2022-10-19 13:50
Reported
2022-10-19 14:44
Platform
win10v2004-20220901-en
Max time kernel
152s
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:\\Windupdt\\winupdate.exe" | C:\Users\Admin\AppData\Local\Temp\7af7f19c903eaa61de12499bb36d0cc8f58706f1b76a62b168c522bca71d361b.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 |
Disables RegEdit via registry modification
| Description | Indicator | Process | Target |
| Set value (int) | \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\DisableRegistryTools = "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\7af7f19c903eaa61de12499bb36d0cc8f58706f1b76a62b168c522bca71d361b.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:\\Windupdt\\winupdate.exe" | C:\Users\Admin\AppData\Local\Temp\7af7f19c903eaa61de12499bb36d0cc8f58706f1b76a62b168c522bca71d361b.exe | N/A |
| Set value (str) | \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\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 364 set thread context of 4108 | N/A | C:\Users\Admin\AppData\Local\Temp\7af7f19c903eaa61de12499bb36d0cc8f58706f1b76a62b168c522bca71d361b.exe | C:\Windows\SysWOW64\explorer.exe |
Program crash
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\WerFault.exe | C:\Windows\SysWOW64\notepad.exe |
Checks processor information in registry
| Description | Indicator | Process | Target |
| 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\7af7f19c903eaa61de12499bb36d0cc8f58706f1b76a62b168c522bca71d361b.exe | N/A |
| Key value queried | \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString | C:\Users\Admin\AppData\Local\Temp\7af7f19c903eaa61de12499bb36d0cc8f58706f1b76a62b168c522bca71d361b.exe | N/A |
| Key value queried | \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Identifier | C:\Users\Admin\AppData\Local\Temp\7af7f19c903eaa61de12499bb36d0cc8f58706f1b76a62b168c522bca71d361b.exe | N/A |
| Key value queried | \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\VendorIdentifier | C:\Users\Admin\AppData\Local\Temp\7af7f19c903eaa61de12499bb36d0cc8f58706f1b76a62b168c522bca71d361b.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\7af7f19c903eaa61de12499bb36d0cc8f58706f1b76a62b168c522bca71d361b.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\7af7f19c903eaa61de12499bb36d0cc8f58706f1b76a62b168c522bca71d361b.exe
"C:\Users\Admin\AppData\Local\Temp\7af7f19c903eaa61de12499bb36d0cc8f58706f1b76a62b168c522bca71d361b.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
C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 396 -p 1508 -ip 1508
C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 1508 -s 76
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | lucasgrohl.no-ip.org | udp |
| US | 8.8.8.8:53 | lucasgrohl.no-ip.org | udp |
| US | 8.253.135.112:80 | tcp | |
| US | 8.253.135.112:80 | tcp | |
| NL | 104.80.225.205:443 | tcp | |
| US | 8.8.8.8:53 | lucasgrohl.no-ip.org | udp |
| US | 8.8.8.8:53 | lucasgrohl.no-ip.org | udp |
| US | 8.8.8.8:53 | lucasgrohl.no-ip.org | udp |
| US | 20.189.173.4:443 | tcp | |
| US | 8.8.8.8:53 | lucasgrohl.no-ip.org | udp |
| US | 8.8.8.8:53 | lucasgrohl.no-ip.org | udp |
| NL | 178.79.208.1:80 | tcp | |
| NL | 178.79.208.1:80 | tcp | |
| NL | 178.79.208.1:80 | tcp | |
| US | 8.8.8.8:53 | lucasgrohl.no-ip.org | udp |
| US | 8.8.8.8:53 | lucasgrohl.no-ip.org | udp |
| US | 8.8.8.8:53 | lucasgrohl.no-ip.org | udp |
| US | 8.8.8.8:53 | lucasgrohl.no-ip.org | udp |
| US | 8.8.8.8:53 | lucasgrohl.no-ip.org | udp |
| US | 8.8.8.8:53 | lucasgrohl.no-ip.org | udp |
| US | 8.8.8.8:53 | lucasgrohl.no-ip.org | udp |
| US | 8.8.8.8:53 | lucasgrohl.no-ip.org | udp |
| US | 8.8.8.8:53 | lucasgrohl.no-ip.org | udp |
| US | 8.8.8.8:53 | lucasgrohl.no-ip.org | udp |
| US | 8.8.8.8:53 | lucasgrohl.no-ip.org | udp |
| US | 8.8.8.8:53 | lucasgrohl.no-ip.org | udp |
| US | 8.8.8.8:53 | lucasgrohl.no-ip.org | udp |
| US | 8.8.8.8:53 | lucasgrohl.no-ip.org | udp |
| US | 8.8.8.8:53 | lucasgrohl.no-ip.org | udp |
| US | 8.8.8.8:53 | lucasgrohl.no-ip.org | udp |
| US | 8.8.8.8:53 | lucasgrohl.no-ip.org | udp |
| US | 8.8.8.8:53 | lucasgrohl.no-ip.org | udp |
| US | 8.8.8.8:53 | lucasgrohl.no-ip.org | udp |
| US | 8.8.8.8:53 | lucasgrohl.no-ip.org | udp |
| US | 8.8.8.8:53 | lucasgrohl.no-ip.org | udp |
| US | 8.8.8.8:53 | lucasgrohl.no-ip.org | udp |
| US | 8.8.8.8:53 | udp |
Files
memory/3480-132-0x0000000000000000-mapping.dmp
memory/4108-133-0x0000000000000000-mapping.dmp
memory/4108-134-0x0000000013140000-0x00000000131F7000-memory.dmp
memory/4108-135-0x0000000013140000-0x00000000131F7000-memory.dmp
memory/4108-136-0x0000000013140000-0x00000000131F7000-memory.dmp
memory/1508-137-0x0000000000000000-mapping.dmp
memory/4108-138-0x0000000013140000-0x00000000131F7000-memory.dmp
memory/4108-139-0x0000000013140000-0x00000000131F7000-memory.dmp