Analysis Overview
SHA256
8c07e75a34d360f39dbef294d9c37afb165db551358cb4edac9fe8becd451957
Threat Level: Known bad
The file 8c07e75a34d360f39dbef294d9c37afb165db551358cb4edac9fe8becd451957 was found to be: Known bad.
Malicious Activity Summary
Darkcomet family
Modifies firewall policy service
Windows security bypass
Modifies WinLogon for persistence
Darkcomet
Modifies security service
Disables Task Manager via registry modification
Disables RegEdit via registry modification
Checks BIOS information in registry
Adds Run key to start application
Suspicious use of SetThreadContext
Suspicious use of WriteProcessMemory
Suspicious use of AdjustPrivilegeToken
Enumerates system info in registry
Suspicious behavior: GetForegroundWindowSpam
Checks processor information in registry
Suspicious use of SetWindowsHookEx
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 14:41
Platform
win7-20220812-en
Max time kernel
153s
Max time network
77s
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\8c07e75a34d360f39dbef294d9c37afb165db551358cb4edac9fe8becd451957.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-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows\CurrentVersion\Policies\System\DisableRegistryTools = "1" | C:\Windows\SysWOW64\explorer.exe | N/A |
Disables Task Manager via registry modification
Checks BIOS information in registry
| Description | Indicator | Process | Target |
| Key value queried | \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosDate | C:\Users\Admin\AppData\Local\Temp\8c07e75a34d360f39dbef294d9c37afb165db551358cb4edac9fe8becd451957.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:\\Windupdt\\winupdate.exe" | C:\Users\Admin\AppData\Local\Temp\8c07e75a34d360f39dbef294d9c37afb165db551358cb4edac9fe8becd451957.exe | N/A |
| Set value (str) | \REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\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 976 set thread context of 1388 | N/A | C:\Users\Admin\AppData\Local\Temp\8c07e75a34d360f39dbef294d9c37afb165db551358cb4edac9fe8becd451957.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\8c07e75a34d360f39dbef294d9c37afb165db551358cb4edac9fe8becd451957.exe | N/A |
| Key value queried | \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\VendorIdentifier | C:\Users\Admin\AppData\Local\Temp\8c07e75a34d360f39dbef294d9c37afb165db551358cb4edac9fe8becd451957.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\8c07e75a34d360f39dbef294d9c37afb165db551358cb4edac9fe8becd451957.exe | N/A |
| Key value queried | \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString | C:\Users\Admin\AppData\Local\Temp\8c07e75a34d360f39dbef294d9c37afb165db551358cb4edac9fe8becd451957.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\8c07e75a34d360f39dbef294d9c37afb165db551358cb4edac9fe8becd451957.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\8c07e75a34d360f39dbef294d9c37afb165db551358cb4edac9fe8becd451957.exe
"C:\Users\Admin\AppData\Local\Temp\8c07e75a34d360f39dbef294d9c37afb165db551358cb4edac9fe8becd451957.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 | satthir.no-ip.org | udp |
Files
memory/976-54-0x0000000074C91000-0x0000000074C93000-memory.dmp
memory/664-55-0x0000000000000000-mapping.dmp
memory/1388-57-0x0000000013140000-0x00000000131F7000-memory.dmp
memory/1388-60-0x00000000131D08B4-mapping.dmp
memory/1388-59-0x0000000013140000-0x00000000131F7000-memory.dmp
memory/1388-61-0x0000000013140000-0x00000000131F7000-memory.dmp
memory/1388-63-0x0000000013140000-0x00000000131F7000-memory.dmp
memory/1192-64-0x0000000000000000-mapping.dmp
memory/1388-66-0x0000000013140000-0x00000000131F7000-memory.dmp
memory/1388-67-0x0000000013140000-0x00000000131F7000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2022-10-19 13:50
Reported
2022-10-19 14:41
Platform
win10v2004-20220812-en
Max time kernel
205s
Max time network
215s
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\8c07e75a34d360f39dbef294d9c37afb165db551358cb4edac9fe8becd451957.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-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\DisableRegistryTools = "1" | C:\Windows\SysWOW64\explorer.exe | N/A |
Disables Task Manager via registry modification
Checks BIOS information in registry
| Description | Indicator | Process | Target |
| Key value queried | \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosDate | C:\Users\Admin\AppData\Local\Temp\8c07e75a34d360f39dbef294d9c37afb165db551358cb4edac9fe8becd451957.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-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\winupdater = "C:\\Windupdt\\winupdate.exe" | C:\Windows\SysWOW64\notepad.exe | N/A |
| Set value (str) | \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\winupdater = "C:\\Windupdt\\winupdate.exe" | C:\Users\Admin\AppData\Local\Temp\8c07e75a34d360f39dbef294d9c37afb165db551358cb4edac9fe8becd451957.exe | N/A |
Suspicious use of SetThreadContext
| Description | Indicator | Process | Target |
| PID 4252 set thread context of 4672 | N/A | C:\Users\Admin\AppData\Local\Temp\8c07e75a34d360f39dbef294d9c37afb165db551358cb4edac9fe8becd451957.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\VendorIdentifier | C:\Windows\SysWOW64\explorer.exe | N/A |
| Key opened | \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0 | C:\Users\Admin\AppData\Local\Temp\8c07e75a34d360f39dbef294d9c37afb165db551358cb4edac9fe8becd451957.exe | N/A |
| Key value queried | \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString | C:\Users\Admin\AppData\Local\Temp\8c07e75a34d360f39dbef294d9c37afb165db551358cb4edac9fe8becd451957.exe | N/A |
| Key value queried | \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Identifier | C:\Users\Admin\AppData\Local\Temp\8c07e75a34d360f39dbef294d9c37afb165db551358cb4edac9fe8becd451957.exe | N/A |
| Key value queried | \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\VendorIdentifier | C:\Users\Admin\AppData\Local\Temp\8c07e75a34d360f39dbef294d9c37afb165db551358cb4edac9fe8becd451957.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 |
Enumerates system info in registry
| Description | Indicator | Process | Target |
| Key value queried | \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\Identifier | C:\Users\Admin\AppData\Local\Temp\8c07e75a34d360f39dbef294d9c37afb165db551358cb4edac9fe8becd451957.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\8c07e75a34d360f39dbef294d9c37afb165db551358cb4edac9fe8becd451957.exe
"C:\Users\Admin\AppData\Local\Temp\8c07e75a34d360f39dbef294d9c37afb165db551358cb4edac9fe8becd451957.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 | 93.184.221.240:80 | tcp | |
| US | 52.182.143.210:443 | tcp | |
| US | 8.8.8.8:53 | satthir.no-ip.org | udp |
| US | 8.8.8.8:53 | satthir.no-ip.org | udp |
| US | 8.8.8.8:53 | satthir.no-ip.org | udp |
| US | 93.184.220.29:80 | tcp | |
| US | 93.184.220.29:80 | tcp | |
| US | 8.8.8.8:53 | satthir.no-ip.org | udp |
| US | 8.8.8.8:53 | satthir.no-ip.org | udp |
| US | 8.8.8.8:53 | satthir.no-ip.org | udp |
| US | 8.8.8.8:53 | 176.122.125.40.in-addr.arpa | udp |
| US | 8.8.8.8:53 | satthir.no-ip.org | udp |
| US | 8.8.8.8:53 | satthir.no-ip.org | udp |
| US | 8.8.8.8:53 | satthir.no-ip.org | udp |
| US | 8.8.8.8:53 | satthir.no-ip.org | udp |
| US | 8.8.8.8:53 | satthir.no-ip.org | udp |
| US | 8.8.8.8:53 | satthir.no-ip.org | udp |
| US | 8.8.8.8:53 | satthir.no-ip.org | udp |
| US | 8.8.8.8:53 | satthir.no-ip.org | udp |
| US | 8.8.8.8:53 | satthir.no-ip.org | udp |
| US | 8.8.8.8:53 | satthir.no-ip.org | udp |
| US | 8.8.8.8:53 | satthir.no-ip.org | udp |
| US | 8.8.8.8:53 | satthir.no-ip.org | udp |
| US | 8.8.8.8:53 | satthir.no-ip.org | udp |
| US | 8.8.8.8:53 | satthir.no-ip.org | udp |
| US | 8.8.8.8:53 | satthir.no-ip.org | udp |
| US | 8.8.8.8:53 | satthir.no-ip.org | udp |
| US | 8.8.8.8:53 | satthir.no-ip.org | udp |
| US | 8.8.8.8:53 | satthir.no-ip.org | udp |
| US | 8.8.8.8:53 | satthir.no-ip.org | udp |
| US | 8.8.8.8:53 | satthir.no-ip.org | udp |
Files
memory/4776-132-0x0000000000000000-mapping.dmp
memory/4672-133-0x0000000000000000-mapping.dmp
memory/4672-134-0x0000000013140000-0x00000000131F7000-memory.dmp
memory/4672-135-0x0000000013140000-0x00000000131F7000-memory.dmp
memory/4672-136-0x0000000013140000-0x00000000131F7000-memory.dmp
memory/2168-137-0x0000000000000000-mapping.dmp
memory/4672-138-0x0000000013140000-0x00000000131F7000-memory.dmp