Analysis Overview
SHA256
a809e73a913bb35e9ca2368fcedd4e7311a4a651ed9edd081593b81bac03f605
Threat Level: Known bad
The file a229acff4e0605ad24eaf3d9c44fdb1b was found to be: Known bad.
Malicious Activity Summary
Darkcomet
Modifies WinLogon for persistence
Darkcomet family
Drops file in Drivers directory
UPX packed file
Checks BIOS information in registry
Executes dropped EXE
Checks computer location settings
Loads dropped DLL
Adds Run key to start application
Enumerates physical storage devices
Unsigned PE
Suspicious use of WriteProcessMemory
Suspicious use of SetWindowsHookEx
Modifies registry class
Suspicious behavior: GetForegroundWindowSpam
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Checks processor information in registry
Enumerates system info in registry
MITRE ATT&CK
Enterprise Matrix V15
Analysis: static1
Detonation Overview
Reported
2024-02-24 15:14
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 |
Analysis: behavioral1
Detonation Overview
Submitted
2024-02-24 15:14
Reported
2024-02-24 15:16
Platform
win7-20240215-en
Max time kernel
150s
Max time network
120s
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\a229acff4e0605ad24eaf3d9c44fdb1b.exe | N/A |
Drops file in Drivers directory
| Description | Indicator | Process | Target |
| File opened for modification | C:\Windows\system32\drivers\etc\hosts | C:\Users\Admin\AppData\Local\Temp\a229acff4e0605ad24eaf3d9c44fdb1b.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\a229acff4e0605ad24eaf3d9c44fdb1b.exe | N/A |
| Key value queried | \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosDate | C:\Windupdt\winupdate.exe | N/A |
Executes dropped EXE
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\[TGS]CAPUB V1.11.EXE | N/A |
| N/A | N/A | C:\Windupdt\winupdate.exe | N/A |
Loads dropped DLL
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\a229acff4e0605ad24eaf3d9c44fdb1b.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\a229acff4e0605ad24eaf3d9c44fdb1b.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\a229acff4e0605ad24eaf3d9c44fdb1b.exe | N/A |
| N/A | N/A | C:\Windupdt\winupdate.exe | N/A |
| N/A | N/A | C:\Windupdt\winupdate.exe | N/A |
| N/A | N/A | C:\Windupdt\winupdate.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 |
Adds Run key to start application
| Description | Indicator | Process | Target |
| Set value (str) | \REGISTRY\USER\S-1-5-21-2248906074-2862704502-246302768-1000\Software\Microsoft\Windows\CurrentVersion\Run\winupdater = "C:\\Windupdt\\winupdate.exe" | C:\Users\Admin\AppData\Local\Temp\a229acff4e0605ad24eaf3d9c44fdb1b.exe | N/A |
Enumerates physical storage devices
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\a229acff4e0605ad24eaf3d9c44fdb1b.exe | N/A |
| Key value queried | \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Identifier | C:\Users\Admin\AppData\Local\Temp\a229acff4e0605ad24eaf3d9c44fdb1b.exe | N/A |
| Key value queried | \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\VendorIdentifier | C:\Users\Admin\AppData\Local\Temp\a229acff4e0605ad24eaf3d9c44fdb1b.exe | N/A |
| Key opened | \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0 | C:\Windupdt\winupdate.exe | N/A |
| Key value queried | \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString | C:\Windupdt\winupdate.exe | N/A |
| Key value queried | \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Identifier | C:\Windupdt\winupdate.exe | N/A |
| Key value queried | \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\VendorIdentifier | C:\Windupdt\winupdate.exe | N/A |
| Key opened | \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0 | C:\Users\Admin\AppData\Local\Temp\a229acff4e0605ad24eaf3d9c44fdb1b.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\a229acff4e0605ad24eaf3d9c44fdb1b.exe | N/A |
| Key value queried | \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\Identifier | C:\Windupdt\winupdate.exe | N/A |
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: GetForegroundWindowSpam
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windupdt\winupdate.exe | N/A |
Suspicious use of AdjustPrivilegeToken
Suspicious use of SetWindowsHookEx
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windupdt\winupdate.exe | N/A |
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\a229acff4e0605ad24eaf3d9c44fdb1b.exe
"C:\Users\Admin\AppData\Local\Temp\a229acff4e0605ad24eaf3d9c44fdb1b.exe"
C:\Users\Admin\AppData\Local\Temp\[TGS]CAPUB V1.11.EXE
"C:\Users\Admin\AppData\Local\Temp\[TGS]CAPUB V1.11.EXE"
C:\Windupdt\winupdate.exe
"C:\Windupdt\winupdate.exe"
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | whitepowder.no-ip.biz | udp |
Files
memory/1844-0-0x0000000000400000-0x0000000000560000-memory.dmp
memory/1844-1-0x00000000003F0000-0x00000000003F1000-memory.dmp
\Users\Admin\AppData\Local\Temp\[TGS]CAPUB V1.11.EXE
| MD5 | 33231ad6c7ffecc7a034488afad248cf |
| SHA1 | ee0602f71af134e0180bb41d89287e28465ddd7a |
| SHA256 | 6c3c027daf830f992c17220ce827bcecfc2d9113f5f847001f4404156bb8cbf7 |
| SHA512 | 0487fa712c7f8307904cdb1da23b2b84b1983ecff97685866e1332953f15864b9e300a8e2d125c6db10c52934238a8311ba2819ffff02c73c691674eabb65c97 |
\Windupdt\winupdate.exe
| MD5 | a229acff4e0605ad24eaf3d9c44fdb1b |
| SHA1 | 997612876080a0446d25a5587f3c8f8fa9b3dca6 |
| SHA256 | a809e73a913bb35e9ca2368fcedd4e7311a4a651ed9edd081593b81bac03f605 |
| SHA512 | 3c73d379cbd711e32d6384739347b88c5e914ed573a7455714304cbaa853139a172c282f54ab96aa6cd556cf7a90e61d0d9a9013a1e41e5bcdd110ce69fb32f7 |
memory/1844-26-0x0000000000400000-0x0000000000560000-memory.dmp
memory/2560-25-0x0000000000400000-0x0000000000560000-memory.dmp
memory/1844-19-0x0000000004100000-0x0000000004260000-memory.dmp
memory/2560-27-0x0000000000B40000-0x0000000000CA0000-memory.dmp
memory/2560-28-0x0000000000400000-0x0000000000560000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2024-02-24 15:14
Reported
2024-02-24 15:16
Platform
win10v2004-20240221-en
Max time kernel
150s
Max time network
149s
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\a229acff4e0605ad24eaf3d9c44fdb1b.exe | N/A |
Drops file in Drivers directory
| Description | Indicator | Process | Target |
| File opened for modification | C:\Windows\system32\drivers\etc\hosts | C:\Users\Admin\AppData\Local\Temp\a229acff4e0605ad24eaf3d9c44fdb1b.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\a229acff4e0605ad24eaf3d9c44fdb1b.exe | N/A |
| Key value queried | \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosDate | C:\Windupdt\winupdate.exe | N/A |
Checks computer location settings
| Description | Indicator | Process | Target |
| Key value queried | \REGISTRY\USER\S-1-5-21-1712835645-2080934712-2142796781-1000\Control Panel\International\Geo\Nation | C:\Users\Admin\AppData\Local\Temp\a229acff4e0605ad24eaf3d9c44fdb1b.exe | N/A |
Executes dropped EXE
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\[TGS]CAPUB V1.11.EXE | N/A |
| N/A | N/A | C:\Windupdt\winupdate.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 |
Adds Run key to start application
| Description | Indicator | Process | Target |
| Set value (str) | \REGISTRY\USER\S-1-5-21-1712835645-2080934712-2142796781-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\winupdater = "C:\\Windupdt\\winupdate.exe" | C:\Users\Admin\AppData\Local\Temp\a229acff4e0605ad24eaf3d9c44fdb1b.exe | N/A |
Enumerates physical storage devices
Checks processor information in registry
| Description | Indicator | Process | Target |
| Key opened | \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0 | C:\Windupdt\winupdate.exe | N/A |
| Key value queried | \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString | C:\Windupdt\winupdate.exe | N/A |
| Key value queried | \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Identifier | C:\Windupdt\winupdate.exe | N/A |
| Key value queried | \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\VendorIdentifier | C:\Windupdt\winupdate.exe | N/A |
| Key opened | \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0 | C:\Users\Admin\AppData\Local\Temp\a229acff4e0605ad24eaf3d9c44fdb1b.exe | N/A |
| Key value queried | \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString | C:\Users\Admin\AppData\Local\Temp\a229acff4e0605ad24eaf3d9c44fdb1b.exe | N/A |
| Key value queried | \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Identifier | C:\Users\Admin\AppData\Local\Temp\a229acff4e0605ad24eaf3d9c44fdb1b.exe | N/A |
| Key value queried | \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\VendorIdentifier | C:\Users\Admin\AppData\Local\Temp\a229acff4e0605ad24eaf3d9c44fdb1b.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\a229acff4e0605ad24eaf3d9c44fdb1b.exe | N/A |
| Key value queried | \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\Identifier | C:\Windupdt\winupdate.exe | N/A |
Modifies registry class
| Description | Indicator | Process | Target |
| Key created | \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{1f3427c8-5c10-4210-aa03-2ee45287d668}\Instance\ | C:\Users\Admin\AppData\Local\Temp\a229acff4e0605ad24eaf3d9c44fdb1b.exe | N/A |
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: GetForegroundWindowSpam
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windupdt\winupdate.exe | N/A |
Suspicious use of AdjustPrivilegeToken
Suspicious use of SetWindowsHookEx
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windupdt\winupdate.exe | N/A |
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 4664 wrote to memory of 3504 | N/A | C:\Users\Admin\AppData\Local\Temp\a229acff4e0605ad24eaf3d9c44fdb1b.exe | C:\Users\Admin\AppData\Local\Temp\[TGS]CAPUB V1.11.EXE |
| PID 4664 wrote to memory of 3504 | N/A | C:\Users\Admin\AppData\Local\Temp\a229acff4e0605ad24eaf3d9c44fdb1b.exe | C:\Users\Admin\AppData\Local\Temp\[TGS]CAPUB V1.11.EXE |
| PID 4664 wrote to memory of 3504 | N/A | C:\Users\Admin\AppData\Local\Temp\a229acff4e0605ad24eaf3d9c44fdb1b.exe | C:\Users\Admin\AppData\Local\Temp\[TGS]CAPUB V1.11.EXE |
| PID 4664 wrote to memory of 3244 | N/A | C:\Users\Admin\AppData\Local\Temp\a229acff4e0605ad24eaf3d9c44fdb1b.exe | C:\Windupdt\winupdate.exe |
| PID 4664 wrote to memory of 3244 | N/A | C:\Users\Admin\AppData\Local\Temp\a229acff4e0605ad24eaf3d9c44fdb1b.exe | C:\Windupdt\winupdate.exe |
| PID 4664 wrote to memory of 3244 | N/A | C:\Users\Admin\AppData\Local\Temp\a229acff4e0605ad24eaf3d9c44fdb1b.exe | C:\Windupdt\winupdate.exe |
Processes
C:\Users\Admin\AppData\Local\Temp\a229acff4e0605ad24eaf3d9c44fdb1b.exe
"C:\Users\Admin\AppData\Local\Temp\a229acff4e0605ad24eaf3d9c44fdb1b.exe"
C:\Users\Admin\AppData\Local\Temp\[TGS]CAPUB V1.11.EXE
"C:\Users\Admin\AppData\Local\Temp\[TGS]CAPUB V1.11.EXE"
C:\Windupdt\winupdate.exe
"C:\Windupdt\winupdate.exe"
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | 73.159.190.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 241.154.82.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 72.32.126.40.in-addr.arpa | udp |
| US | 8.8.8.8:53 | whitepowder.no-ip.biz | udp |
| US | 8.8.8.8:53 | 209.178.17.96.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 43.58.199.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 41.110.16.96.in-addr.arpa | udp |
| US | 8.8.8.8:53 | whitepowder.no-ip.biz | udp |
| US | 8.8.8.8:53 | whitepowder.no-ip.biz | udp |
| US | 8.8.8.8:53 | whitepowder.no-ip.biz | udp |
| US | 8.8.8.8:53 | whitepowder.no-ip.biz | udp |
| US | 8.8.8.8:53 | whitepowder.no-ip.biz | 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 | whitepowder.no-ip.biz | udp |
| US | 8.8.8.8:53 | 217.135.221.88.in-addr.arpa | udp |
| US | 8.8.8.8:53 | whitepowder.no-ip.biz | udp |
| US | 8.8.8.8:53 | whitepowder.no-ip.biz | udp |
| US | 8.8.8.8:53 | whitepowder.no-ip.biz | udp |
| US | 8.8.8.8:53 | whitepowder.no-ip.biz | udp |
| US | 8.8.8.8:53 | whitepowder.no-ip.biz | udp |
| US | 8.8.8.8:53 | 201.178.17.96.in-addr.arpa | udp |
| US | 8.8.8.8:53 | whitepowder.no-ip.biz | udp |
| US | 8.8.8.8:53 | whitepowder.no-ip.biz | udp |
| US | 8.8.8.8:53 | whitepowder.no-ip.biz | udp |
| US | 8.8.8.8:53 | whitepowder.no-ip.biz | udp |
| US | 8.8.8.8:53 | whitepowder.no-ip.biz | udp |
| US | 8.8.8.8:53 | whitepowder.no-ip.biz | udp |
| US | 8.8.8.8:53 | whitepowder.no-ip.biz | udp |
| US | 8.8.8.8:53 | 173.178.17.96.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 23.236.111.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | whitepowder.no-ip.biz | udp |
| US | 8.8.8.8:53 | whitepowder.no-ip.biz | udp |
| US | 8.8.8.8:53 | whitepowder.no-ip.biz | udp |
| US | 8.8.8.8:53 | whitepowder.no-ip.biz | udp |
| US | 8.8.8.8:53 | whitepowder.no-ip.biz | udp |
| US | 8.8.8.8:53 | whitepowder.no-ip.biz | udp |
| US | 8.8.8.8:53 | whitepowder.no-ip.biz | udp |
| US | 8.8.8.8:53 | whitepowder.no-ip.biz | udp |
| US | 8.8.8.8:53 | whitepowder.no-ip.biz | udp |
| US | 8.8.8.8:53 | whitepowder.no-ip.biz | udp |
| US | 8.8.8.8:53 | whitepowder.no-ip.biz | udp |
Files
memory/4664-0-0x0000000000400000-0x0000000000560000-memory.dmp
memory/4664-1-0x0000000002470000-0x0000000002471000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\[TGS]CAPUB V1.11.EXE
| MD5 | 33231ad6c7ffecc7a034488afad248cf |
| SHA1 | ee0602f71af134e0180bb41d89287e28465ddd7a |
| SHA256 | 6c3c027daf830f992c17220ce827bcecfc2d9113f5f847001f4404156bb8cbf7 |
| SHA512 | 0487fa712c7f8307904cdb1da23b2b84b1983ecff97685866e1332953f15864b9e300a8e2d125c6db10c52934238a8311ba2819ffff02c73c691674eabb65c97 |
C:\Windupdt\winupdate.exe
| MD5 | a229acff4e0605ad24eaf3d9c44fdb1b |
| SHA1 | 997612876080a0446d25a5587f3c8f8fa9b3dca6 |
| SHA256 | a809e73a913bb35e9ca2368fcedd4e7311a4a651ed9edd081593b81bac03f605 |
| SHA512 | 3c73d379cbd711e32d6384739347b88c5e914ed573a7455714304cbaa853139a172c282f54ab96aa6cd556cf7a90e61d0d9a9013a1e41e5bcdd110ce69fb32f7 |
memory/4664-45-0x0000000000400000-0x0000000000560000-memory.dmp
memory/3244-46-0x0000000000400000-0x0000000000560000-memory.dmp
memory/3244-47-0x0000000000710000-0x0000000000711000-memory.dmp
memory/3244-48-0x0000000000400000-0x0000000000560000-memory.dmp