Analysis Overview
SHA256
18dd3f360bd67de6ffc11ae40ef90bfaea57660b61c541babc459e125ea55352
Threat Level: Known bad
The file 6c0abc8280a103572f14d9b665c25351 was found to be: Known bad.
Malicious Activity Summary
Modifies WinLogon for persistence
Darkcomet
Checks BIOS information in registry
Adds Run key to start application
Suspicious use of SetThreadContext
Unsigned PE
Enumerates physical storage devices
Checks processor information in registry
Enumerates system info in registry
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
MITRE ATT&CK
Enterprise Matrix V15
Analysis: static1
Detonation Overview
Reported
2024-01-21 01:50
Signatures
Unsigned PE
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Analysis: behavioral1
Detonation Overview
Submitted
2024-01-21 01:50
Reported
2024-01-21 01:52
Platform
win7-20231215-en
Max time kernel
149s
Max time network
124s
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:\\Users\\Admin\\AppData\\Roaming\\Windupdt\\winupdate.exe" | C:\Users\Admin\AppData\Local\Temp\6c0abc8280a103572f14d9b665c25351.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\6c0abc8280a103572f14d9b665c25351.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-1-5-21-3427588347-1492276948-3422228430-1000\Software\Microsoft\Windows\CurrentVersion\Run\winupdater = "C:\\Users\\Admin\\AppData\\Roaming\\Windupdt\\winupdate.exe" | C:\Users\Admin\AppData\Local\Temp\6c0abc8280a103572f14d9b665c25351.exe | N/A |
| Set value (str) | \REGISTRY\USER\S-1-5-21-3427588347-1492276948-3422228430-1000\Software\Microsoft\Windows\CurrentVersion\Run\winupdater = "C:\\Users\\Admin\\AppData\\Roaming\\Windupdt\\winupdate.exe" | C:\Windows\SysWOW64\notepad.exe | N/A |
Suspicious use of SetThreadContext
| Description | Indicator | Process | Target |
| PID 2876 set thread context of 2864 | N/A | C:\Users\Admin\AppData\Local\Temp\6c0abc8280a103572f14d9b665c25351.exe | C:\Windows\SysWOW64\explorer.exe |
Enumerates physical storage devices
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\6c0abc8280a103572f14d9b665c25351.exe | N/A |
| Key value queried | \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString | C:\Users\Admin\AppData\Local\Temp\6c0abc8280a103572f14d9b665c25351.exe | N/A |
| Key value queried | \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Identifier | C:\Users\Admin\AppData\Local\Temp\6c0abc8280a103572f14d9b665c25351.exe | N/A |
| Key value queried | \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\VendorIdentifier | C:\Users\Admin\AppData\Local\Temp\6c0abc8280a103572f14d9b665c25351.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\6c0abc8280a103572f14d9b665c25351.exe | N/A |
| Key value queried | \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\Identifier | C:\Windows\SysWOW64\explorer.exe | N/A |
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\6c0abc8280a103572f14d9b665c25351.exe
"C:\Users\Admin\AppData\Local\Temp\6c0abc8280a103572f14d9b665c25351.exe"
C:\Windows\SysWOW64\notepad.exe
notepad
C:\Windows\SysWOW64\explorer.exe
"C:\Windows\SysWOW64\explorer.exe"
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | esam2at.no-ip.biz | udp |
Files
memory/2876-0-0x0000000013140000-0x00000000131FF000-memory.dmp
memory/2876-1-0x00000000002E0000-0x00000000002E1000-memory.dmp
memory/2364-3-0x00000000000C0000-0x00000000000C1000-memory.dmp
memory/2364-34-0x0000000000830000-0x0000000000831000-memory.dmp
memory/2864-37-0x0000000013140000-0x00000000131FF000-memory.dmp
memory/2864-39-0x000000007EFDE000-0x000000007EFDF000-memory.dmp
memory/2864-41-0x0000000013140000-0x00000000131FF000-memory.dmp
memory/2864-44-0x0000000013140000-0x00000000131FF000-memory.dmp
memory/2876-43-0x0000000013140000-0x00000000131FF000-memory.dmp
memory/2864-46-0x0000000013140000-0x00000000131FF000-memory.dmp
memory/2864-45-0x0000000013140000-0x00000000131FF000-memory.dmp
memory/2864-47-0x0000000013140000-0x00000000131FF000-memory.dmp
memory/2864-49-0x0000000013140000-0x00000000131FF000-memory.dmp
memory/2864-48-0x0000000000170000-0x0000000000171000-memory.dmp
memory/2864-50-0x0000000013140000-0x00000000131FF000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2024-01-21 01:50
Reported
2024-01-21 01:52
Platform
win10v2004-20231215-en
Max time kernel
150s
Max time network
154s
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:\\Users\\Admin\\AppData\\Roaming\\Windupdt\\winupdate.exe" | C:\Users\Admin\AppData\Local\Temp\6c0abc8280a103572f14d9b665c25351.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\6c0abc8280a103572f14d9b665c25351.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-1-5-21-983843758-932321429-1636175382-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\winupdater = "C:\\Users\\Admin\\AppData\\Roaming\\Windupdt\\winupdate.exe" | C:\Users\Admin\AppData\Local\Temp\6c0abc8280a103572f14d9b665c25351.exe | N/A |
| Set value (str) | \REGISTRY\USER\S-1-5-21-983843758-932321429-1636175382-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\winupdater = "C:\\Users\\Admin\\AppData\\Roaming\\Windupdt\\winupdate.exe" | C:\Windows\SysWOW64\notepad.exe | N/A |
Suspicious use of SetThreadContext
| Description | Indicator | Process | Target |
| PID 888 set thread context of 864 | N/A | C:\Users\Admin\AppData\Local\Temp\6c0abc8280a103572f14d9b665c25351.exe | C:\Windows\SysWOW64\explorer.exe |
Enumerates physical storage devices
Checks processor information in registry
| Description | Indicator | Process | Target |
| Key value queried | \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\VendorIdentifier | C:\Users\Admin\AppData\Local\Temp\6c0abc8280a103572f14d9b665c25351.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\6c0abc8280a103572f14d9b665c25351.exe | N/A |
| Key value queried | \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString | C:\Users\Admin\AppData\Local\Temp\6c0abc8280a103572f14d9b665c25351.exe | N/A |
| Key value queried | \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Identifier | C:\Users\Admin\AppData\Local\Temp\6c0abc8280a103572f14d9b665c25351.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\6c0abc8280a103572f14d9b665c25351.exe | N/A |
| Key value queried | \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\Identifier | C:\Windows\SysWOW64\explorer.exe | N/A |
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\6c0abc8280a103572f14d9b665c25351.exe
"C:\Users\Admin\AppData\Local\Temp\6c0abc8280a103572f14d9b665c25351.exe"
C:\Windows\SysWOW64\notepad.exe
notepad
C:\Windows\SysWOW64\explorer.exe
"C:\Windows\SysWOW64\explorer.exe"
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | 196.249.167.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 240.221.184.93.in-addr.arpa | udp |
| US | 8.8.8.8:53 | esam2at.no-ip.biz | udp |
| US | 8.8.8.8:53 | esam2at.no-ip.biz | udp |
| US | 8.8.8.8:53 | 97.17.167.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | esam2at.no-ip.biz | udp |
| US | 8.8.8.8:53 | esam2at.no-ip.biz | udp |
| US | 20.231.121.79:80 | tcp | |
| US | 8.8.8.8:53 | esam2at.no-ip.biz | udp |
| US | 8.8.8.8:53 | esam2at.no-ip.biz | udp |
| US | 8.8.8.8:53 | 26.165.165.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 198.187.3.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 217.135.221.88.in-addr.arpa | udp |
| US | 8.8.8.8:53 | esam2at.no-ip.biz | udp |
| US | 8.8.8.8:53 | esam2at.no-ip.biz | udp |
| US | 8.8.8.8:53 | esam2at.no-ip.biz | udp |
| US | 8.8.8.8:53 | esam2at.no-ip.biz | udp |
| US | 8.8.8.8:53 | esam2at.no-ip.biz | udp |
| US | 8.8.8.8:53 | esam2at.no-ip.biz | udp |
| US | 8.8.8.8:53 | 173.178.17.96.in-addr.arpa | udp |
| US | 8.8.8.8:53 | esam2at.no-ip.biz | udp |
| US | 8.8.8.8:53 | esam2at.no-ip.biz | udp |
| US | 8.8.8.8:53 | esam2at.no-ip.biz | udp |
| US | 8.8.8.8:53 | esam2at.no-ip.biz | udp |
| US | 8.8.8.8:53 | esam2at.no-ip.biz | udp |
| US | 8.8.8.8:53 | 43.229.111.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | esam2at.no-ip.biz | udp |
| US | 8.8.8.8:53 | esam2at.no-ip.biz | udp |
| GB | 96.16.110.41:443 | tcp | |
| SE | 192.229.221.95:80 | tcp | |
| US | 8.8.8.8:53 | esam2at.no-ip.biz | udp |
| US | 8.8.8.8:53 | esam2at.no-ip.biz | udp |
| US | 8.8.8.8:53 | esam2at.no-ip.biz | udp |
| US | 8.8.8.8:53 | esam2at.no-ip.biz | udp |
| US | 8.8.8.8:53 | esam2at.no-ip.biz | udp |
| US | 8.8.8.8:53 | esam2at.no-ip.biz | udp |
| US | 8.8.8.8:53 | esam2at.no-ip.biz | udp |
| US | 8.8.8.8:53 | esam2at.no-ip.biz | udp |
| US | 8.8.8.8:53 | esam2at.no-ip.biz | udp |
| US | 8.8.8.8:53 | 234.17.178.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | esam2at.no-ip.biz | udp |
| US | 8.8.8.8:53 | esam2at.no-ip.biz | udp |
Files
memory/888-0-0x0000000013140000-0x00000000131FF000-memory.dmp
memory/888-1-0x00000000027C0000-0x00000000027C1000-memory.dmp
memory/4840-3-0x00000000007D0000-0x00000000007D1000-memory.dmp
C:\Users\Admin\AppData\Roaming\Windupdt\winupdate.exe
| MD5 | 6c0abc8280a103572f14d9b665c25351 |
| SHA1 | a4a95a532717bcfcb3a09640568b7da1133bbecb |
| SHA256 | 18dd3f360bd67de6ffc11ae40ef90bfaea57660b61c541babc459e125ea55352 |
| SHA512 | 645a5d0ed9bc9f224cb88d469ef47c9f355f4570a1349155fa33cbc3ab4b10e32b2e4dcb2bdbc955444091d6758d6f430353bc2a842484bd090482e3af4bf2f3 |
memory/888-10-0x0000000013140000-0x00000000131FF000-memory.dmp
memory/864-11-0x0000000013140000-0x00000000131FF000-memory.dmp
memory/864-13-0x0000000013140000-0x00000000131FF000-memory.dmp
memory/864-12-0x0000000013140000-0x00000000131FF000-memory.dmp
memory/864-14-0x0000000002CD0000-0x0000000002CD1000-memory.dmp
memory/864-16-0x0000000013140000-0x00000000131FF000-memory.dmp
memory/864-15-0x0000000013140000-0x00000000131FF000-memory.dmp
memory/864-17-0x0000000013140000-0x00000000131FF000-memory.dmp