Analysis Overview
SHA256
f4a4defac40c38c8bd27a3b26160edd1a51f33bb71fd8696a314abb00c4fd007
Threat Level: Known bad
The file a199b91a683f76db97d4a46dc1d1a720 was found to be: Known bad.
Malicious Activity Summary
Modifies security service
Darkcomet family
Darkcomet
Checks BIOS information in registry
UPX packed file
Suspicious use of SetThreadContext
Unsigned PE
Suspicious use of WriteProcessMemory
Enumerates system info in registry
Suspicious behavior: GetForegroundWindowSpam
Suspicious use of AdjustPrivilegeToken
Suspicious use of SetWindowsHookEx
Checks processor information in registry
MITRE ATT&CK
Enterprise Matrix V15
Analysis: static1
Detonation Overview
Reported
2024-02-24 10:06
Signatures
Darkcomet family
UPX packed file
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Unsigned PE
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
Analysis: behavioral1
Detonation Overview
Submitted
2024-02-24 10:06
Reported
2024-02-24 10:09
Platform
win7-20240221-en
Max time kernel
150s
Max time network
125s
Command Line
Signatures
Darkcomet
Modifies security service
| Description | Indicator | Process | Target |
| Set value (int) | \REGISTRY\MACHINE\SYSTEM\ControlSet001\services\wscsvc\Start = "4" | C:\Users\Admin\AppData\Local\Temp\a199b91a683f76db97d4a46dc1d1a720.exe | N/A |
| Set value (int) | \REGISTRY\MACHINE\SYSTEM\ControlSet001\services\wscsvc\Start = "4" | 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\a199b91a683f76db97d4a46dc1d1a720.exe | N/A |
| Key value queried | \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosDate | C:\Windows\SysWOW64\explorer.exe | N/A |
UPX packed file
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
Suspicious use of SetThreadContext
| Description | Indicator | Process | Target |
| PID 2388 set thread context of 2952 | N/A | C:\Users\Admin\AppData\Local\Temp\a199b91a683f76db97d4a46dc1d1a720.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:\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\a199b91a683f76db97d4a46dc1d1a720.exe | N/A |
| Key value queried | \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString | C:\Users\Admin\AppData\Local\Temp\a199b91a683f76db97d4a46dc1d1a720.exe | N/A |
| Key value queried | \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Identifier | C:\Users\Admin\AppData\Local\Temp\a199b91a683f76db97d4a46dc1d1a720.exe | N/A |
| Key value queried | \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\VendorIdentifier | C:\Users\Admin\AppData\Local\Temp\a199b91a683f76db97d4a46dc1d1a720.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 |
Enumerates system info in registry
| Description | Indicator | Process | Target |
| Key value queried | \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\Identifier | C:\Users\Admin\AppData\Local\Temp\a199b91a683f76db97d4a46dc1d1a720.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
| Description | Indicator | Process | Target |
| PID 2388 wrote to memory of 2952 | N/A | C:\Users\Admin\AppData\Local\Temp\a199b91a683f76db97d4a46dc1d1a720.exe | C:\Windows\SysWOW64\explorer.exe |
| PID 2388 wrote to memory of 2952 | N/A | C:\Users\Admin\AppData\Local\Temp\a199b91a683f76db97d4a46dc1d1a720.exe | C:\Windows\SysWOW64\explorer.exe |
| PID 2388 wrote to memory of 2952 | N/A | C:\Users\Admin\AppData\Local\Temp\a199b91a683f76db97d4a46dc1d1a720.exe | C:\Windows\SysWOW64\explorer.exe |
| PID 2388 wrote to memory of 2952 | N/A | C:\Users\Admin\AppData\Local\Temp\a199b91a683f76db97d4a46dc1d1a720.exe | C:\Windows\SysWOW64\explorer.exe |
| PID 2388 wrote to memory of 2952 | N/A | C:\Users\Admin\AppData\Local\Temp\a199b91a683f76db97d4a46dc1d1a720.exe | C:\Windows\SysWOW64\explorer.exe |
| PID 2388 wrote to memory of 2952 | N/A | C:\Users\Admin\AppData\Local\Temp\a199b91a683f76db97d4a46dc1d1a720.exe | C:\Windows\SysWOW64\explorer.exe |
Processes
C:\Users\Admin\AppData\Local\Temp\a199b91a683f76db97d4a46dc1d1a720.exe
"C:\Users\Admin\AppData\Local\Temp\a199b91a683f76db97d4a46dc1d1a720.exe"
C:\Windows\SysWOW64\explorer.exe
"C:\Windows\SysWOW64\explorer.exe"
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | omm4n1.dyndns.org | udp |
Files
memory/2388-0-0x0000000013140000-0x000000001322D000-memory.dmp
memory/2388-1-0x0000000000260000-0x0000000000261000-memory.dmp
memory/2952-2-0x0000000013140000-0x000000001322D000-memory.dmp
memory/2952-4-0x000000007EFDE000-0x000000007EFDF000-memory.dmp
memory/2952-6-0x0000000013140000-0x000000001322D000-memory.dmp
memory/2952-9-0x0000000013140000-0x000000001322D000-memory.dmp
memory/2388-8-0x0000000013140000-0x000000001322D000-memory.dmp
memory/2952-10-0x0000000013140000-0x000000001322D000-memory.dmp
memory/2952-11-0x00000000002B0000-0x00000000002B1000-memory.dmp
memory/2952-12-0x0000000013140000-0x000000001322D000-memory.dmp
memory/2952-13-0x0000000013140000-0x000000001322D000-memory.dmp
memory/2952-14-0x0000000013140000-0x000000001322D000-memory.dmp
memory/2952-15-0x0000000013140000-0x000000001322D000-memory.dmp
memory/2952-16-0x0000000013140000-0x000000001322D000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2024-02-24 10:06
Reported
2024-02-24 10:09
Platform
win10v2004-20240221-en
Max time kernel
150s
Max time network
154s
Command Line
Signatures
Darkcomet
Modifies security service
| Description | Indicator | Process | Target |
| Set value (int) | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\wscsvc\Start = "4" | C:\Users\Admin\AppData\Local\Temp\a199b91a683f76db97d4a46dc1d1a720.exe | N/A |
| Set value (int) | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\wscsvc\Start = "4" | 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\a199b91a683f76db97d4a46dc1d1a720.exe | N/A |
| Key value queried | \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosDate | C:\Windows\SysWOW64\explorer.exe | N/A |
UPX packed file
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
Suspicious use of SetThreadContext
| Description | Indicator | Process | Target |
| PID 4568 set thread context of 1184 | N/A | C:\Users\Admin\AppData\Local\Temp\a199b91a683f76db97d4a46dc1d1a720.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:\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\a199b91a683f76db97d4a46dc1d1a720.exe | N/A |
| Key value queried | \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString | C:\Users\Admin\AppData\Local\Temp\a199b91a683f76db97d4a46dc1d1a720.exe | N/A |
| Key value queried | \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Identifier | C:\Users\Admin\AppData\Local\Temp\a199b91a683f76db97d4a46dc1d1a720.exe | N/A |
| Key value queried | \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\VendorIdentifier | C:\Users\Admin\AppData\Local\Temp\a199b91a683f76db97d4a46dc1d1a720.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 |
Enumerates system info in registry
| Description | Indicator | Process | Target |
| Key value queried | \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\Identifier | C:\Users\Admin\AppData\Local\Temp\a199b91a683f76db97d4a46dc1d1a720.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
| Description | Indicator | Process | Target |
| PID 4568 wrote to memory of 1184 | N/A | C:\Users\Admin\AppData\Local\Temp\a199b91a683f76db97d4a46dc1d1a720.exe | C:\Windows\SysWOW64\explorer.exe |
| PID 4568 wrote to memory of 1184 | N/A | C:\Users\Admin\AppData\Local\Temp\a199b91a683f76db97d4a46dc1d1a720.exe | C:\Windows\SysWOW64\explorer.exe |
| PID 4568 wrote to memory of 1184 | N/A | C:\Users\Admin\AppData\Local\Temp\a199b91a683f76db97d4a46dc1d1a720.exe | C:\Windows\SysWOW64\explorer.exe |
| PID 4568 wrote to memory of 1184 | N/A | C:\Users\Admin\AppData\Local\Temp\a199b91a683f76db97d4a46dc1d1a720.exe | C:\Windows\SysWOW64\explorer.exe |
| PID 4568 wrote to memory of 1184 | N/A | C:\Users\Admin\AppData\Local\Temp\a199b91a683f76db97d4a46dc1d1a720.exe | C:\Windows\SysWOW64\explorer.exe |
Processes
C:\Users\Admin\AppData\Local\Temp\a199b91a683f76db97d4a46dc1d1a720.exe
"C:\Users\Admin\AppData\Local\Temp\a199b91a683f76db97d4a46dc1d1a720.exe"
C:\Windows\SysWOW64\explorer.exe
"C:\Windows\SysWOW64\explorer.exe"
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | 69.31.126.40.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 241.154.82.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 0.205.248.87.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 41.110.16.96.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 88.156.103.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | omm4n1.dyndns.org | udp |
| US | 20.231.121.79:80 | tcp | |
| US | 8.8.8.8:53 | omm4n1.dyndns.org | udp |
| US | 8.8.8.8:53 | omm4n1.dyndns.org | udp |
| US | 8.8.8.8:53 | omm4n1.dyndns.org | udp |
| US | 8.8.8.8:53 | omm4n1.dyndns.org | udp |
| US | 8.8.8.8:53 | 103.169.127.40.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 198.187.3.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 18.134.221.88.in-addr.arpa | udp |
| US | 8.8.8.8:53 | omm4n1.dyndns.org | udp |
| US | 8.8.8.8:53 | omm4n1.dyndns.org | udp |
| US | 8.8.8.8:53 | omm4n1.dyndns.org | udp |
| US | 8.8.8.8:53 | omm4n1.dyndns.org | udp |
| US | 8.8.8.8:53 | omm4n1.dyndns.org | udp |
| US | 8.8.8.8:53 | omm4n1.dyndns.org | udp |
| US | 8.8.8.8:53 | 180.178.17.96.in-addr.arpa | udp |
| US | 8.8.8.8:53 | omm4n1.dyndns.org | udp |
| US | 8.8.8.8:53 | omm4n1.dyndns.org | udp |
| US | 8.8.8.8:53 | omm4n1.dyndns.org | udp |
| US | 8.8.8.8:53 | omm4n1.dyndns.org | udp |
| US | 8.8.8.8:53 | omm4n1.dyndns.org | udp |
| US | 8.8.8.8:53 | omm4n1.dyndns.org | udp |
| US | 8.8.8.8:53 | 30.243.111.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | omm4n1.dyndns.org | udp |
| US | 8.8.8.8:53 | omm4n1.dyndns.org | udp |
| US | 8.8.8.8:53 | omm4n1.dyndns.org | udp |
| US | 8.8.8.8:53 | omm4n1.dyndns.org | udp |
| US | 8.8.8.8:53 | omm4n1.dyndns.org | udp |
| US | 8.8.8.8:53 | omm4n1.dyndns.org | udp |
| US | 8.8.8.8:53 | omm4n1.dyndns.org | udp |
| US | 8.8.8.8:53 | omm4n1.dyndns.org | udp |
| US | 8.8.8.8:53 | omm4n1.dyndns.org | udp |
| US | 8.8.8.8:53 | omm4n1.dyndns.org | udp |
| US | 8.8.8.8:53 | omm4n1.dyndns.org | udp |
| US | 8.8.8.8:53 | 40.173.79.40.in-addr.arpa | udp |
| US | 8.8.8.8:53 | omm4n1.dyndns.org | udp |
Files
memory/4568-0-0x0000000013140000-0x000000001322D000-memory.dmp
memory/4568-1-0x0000000000A90000-0x0000000000A91000-memory.dmp
memory/1184-2-0x0000000013140000-0x000000001322D000-memory.dmp
memory/1184-4-0x0000000013140000-0x000000001322D000-memory.dmp
memory/4568-5-0x0000000013140000-0x000000001322D000-memory.dmp
memory/1184-7-0x0000000013140000-0x000000001322D000-memory.dmp
memory/1184-8-0x0000000000FF0000-0x0000000000FF1000-memory.dmp
memory/1184-9-0x0000000013140000-0x000000001322D000-memory.dmp
memory/1184-10-0x0000000013140000-0x000000001322D000-memory.dmp
memory/1184-11-0x0000000013140000-0x000000001322D000-memory.dmp
memory/1184-12-0x0000000013140000-0x000000001322D000-memory.dmp
memory/1184-13-0x0000000013140000-0x000000001322D000-memory.dmp