Analysis Overview
SHA256
fb4cd6a6485ddf6c6f0325e6b795cfd85d24ac962b025c7b4d70d8c265e8591e
Threat Level: Known bad
The file fb4cd6a6485ddf6c6f0325e6b795cfd85d24ac962b025c7b4d70d8c265e8591e was found to be: Known bad.
Malicious Activity Summary
Modifies WinLogon for persistence
Darkcomet
Executes dropped EXE
Checks computer location settings
Adds Run key to start application
Suspicious use of SetThreadContext
Enumerates physical storage devices
Suspicious behavior: GetForegroundWindowSpam
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Suspicious use of SetWindowsHookEx
Modifies registry class
MITRE ATT&CK
Enterprise Matrix V6
Analysis: static1
Detonation Overview
Reported
2022-10-11 06:15
Signatures
Analysis: behavioral2
Detonation Overview
Submitted
2022-10-11 06:15
Reported
2022-10-11 07:49
Platform
win10v2004-20220901-en
Max time kernel
150s
Max time network
155s
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\\Local\\Temp\\MSDCSC\\msdcsc.exe" | C:\Users\Admin\AppData\Local\Temp\fb4cd6a6485ddf6c6f0325e6b795cfd85d24ac962b025c7b4d70d8c265e8591e.exe | N/A |
Executes dropped EXE
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\MSDCSC\msdcsc.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\MSDCSC\msdcsc.exe | N/A |
Checks computer location settings
| Description | Indicator | Process | Target |
| Key value queried | \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\Control Panel\International\Geo\Nation | C:\Users\Admin\AppData\Local\Temp\fb4cd6a6485ddf6c6f0325e6b795cfd85d24ac962b025c7b4d70d8c265e8591e.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\MicroUpdate = "C:\\Users\\Admin\\AppData\\Local\\Temp\\MSDCSC\\msdcsc.exe" | C:\Users\Admin\AppData\Local\Temp\MSDCSC\msdcsc.exe | N/A |
| Set value (str) | \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\Users\\Admin\\AppData\\Local\\Temp\\MSDCSC\\msdcsc.exe" | C:\Users\Admin\AppData\Local\Temp\fb4cd6a6485ddf6c6f0325e6b795cfd85d24ac962b025c7b4d70d8c265e8591e.exe | N/A |
Suspicious use of SetThreadContext
| Description | Indicator | Process | Target |
| PID 920 set thread context of 4492 | N/A | C:\Users\Admin\AppData\Local\Temp\fb4cd6a6485ddf6c6f0325e6b795cfd85d24ac962b025c7b4d70d8c265e8591e.exe | C:\Users\Admin\AppData\Local\Temp\fb4cd6a6485ddf6c6f0325e6b795cfd85d24ac962b025c7b4d70d8c265e8591e.exe |
| PID 3380 set thread context of 3192 | N/A | C:\Users\Admin\AppData\Local\Temp\MSDCSC\msdcsc.exe | C:\Users\Admin\AppData\Local\Temp\MSDCSC\msdcsc.exe |
Enumerates physical storage devices
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\fb4cd6a6485ddf6c6f0325e6b795cfd85d24ac962b025c7b4d70d8c265e8591e.exe | N/A |
Suspicious behavior: GetForegroundWindowSpam
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\MSDCSC\msdcsc.exe | N/A |
Suspicious use of AdjustPrivilegeToken
Suspicious use of SetWindowsHookEx
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\MSDCSC\msdcsc.exe | N/A |
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\fb4cd6a6485ddf6c6f0325e6b795cfd85d24ac962b025c7b4d70d8c265e8591e.exe
"C:\Users\Admin\AppData\Local\Temp\fb4cd6a6485ddf6c6f0325e6b795cfd85d24ac962b025c7b4d70d8c265e8591e.exe"
C:\Users\Admin\AppData\Local\Temp\fb4cd6a6485ddf6c6f0325e6b795cfd85d24ac962b025c7b4d70d8c265e8591e.exe
C:\Users\Admin\AppData\Local\Temp\fb4cd6a6485ddf6c6f0325e6b795cfd85d24ac962b025c7b4d70d8c265e8591e.exe
C:\Users\Admin\AppData\Local\Temp\MSDCSC\msdcsc.exe
"C:\Users\Admin\AppData\Local\Temp\MSDCSC\msdcsc.exe"
C:\Users\Admin\AppData\Local\Temp\MSDCSC\msdcsc.exe
C:\Users\Admin\AppData\Local\Temp\MSDCSC\msdcsc.exe
C:\Windows\SysWOW64\notepad.exe
notepad
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | nomsrat.sytes.net | udp |
| US | 8.8.8.8:53 | nomsrat.sytes.net | udp |
| US | 8.8.8.8:53 | nomsrat.sytes.net | udp |
| US | 20.42.65.84:443 | tcp | |
| US | 8.8.8.8:53 | nomsrat.sytes.net | udp |
| US | 8.8.8.8:53 | nomsrat.sytes.net | udp |
| US | 8.8.8.8:53 | nomsrat.sytes.net | udp |
| US | 8.8.8.8:53 | nomsrat.sytes.net | udp |
| US | 8.8.8.8:53 | nomsrat.sytes.net | udp |
| US | 93.184.221.240:80 | tcp | |
| US | 93.184.221.240:80 | tcp | |
| US | 93.184.221.240:80 | tcp | |
| US | 8.8.8.8:53 | nomsrat.sytes.net | udp |
| US | 8.8.8.8:53 | nomsrat.sytes.net | udp |
| US | 8.8.8.8:53 | nomsrat.sytes.net | udp |
| US | 8.8.8.8:53 | nomsrat.sytes.net | udp |
| US | 8.8.8.8:53 | nomsrat.sytes.net | udp |
| US | 93.184.221.240:80 | tcp | |
| US | 8.8.8.8:53 | nomsrat.sytes.net | udp |
| US | 8.8.8.8:53 | nomsrat.sytes.net | udp |
| NL | 104.80.229.204:443 | tcp | |
| US | 8.8.8.8:53 | nomsrat.sytes.net | udp |
| US | 8.8.8.8:53 | nomsrat.sytes.net | udp |
| US | 8.8.8.8:53 | nomsrat.sytes.net | udp |
| US | 8.8.8.8:53 | nomsrat.sytes.net | udp |
| US | 8.8.8.8:53 | nomsrat.sytes.net | udp |
| US | 8.8.8.8:53 | nomsrat.sytes.net | udp |
| US | 8.8.8.8:53 | nomsrat.sytes.net | udp |
| US | 8.8.8.8:53 | nomsrat.sytes.net | udp |
| US | 8.8.8.8:53 | nomsrat.sytes.net | udp |
| US | 8.8.8.8:53 | nomsrat.sytes.net | udp |
| US | 8.8.8.8:53 | nomsrat.sytes.net | udp |
| US | 8.8.8.8:53 | nomsrat.sytes.net | udp |
| US | 8.8.8.8:53 | nomsrat.sytes.net | udp |
| US | 8.8.8.8:53 | nomsrat.sytes.net | udp |
| US | 8.8.8.8:53 | nomsrat.sytes.net | udp |
Files
memory/4492-132-0x0000000000000000-mapping.dmp
memory/4492-133-0x0000000000400000-0x00000000004CA000-memory.dmp
memory/4492-134-0x0000000000400000-0x00000000004CA000-memory.dmp
memory/4492-135-0x0000000000400000-0x00000000004CA000-memory.dmp
memory/4492-136-0x0000000000400000-0x00000000004CA000-memory.dmp
memory/3380-137-0x0000000000000000-mapping.dmp
C:\Users\Admin\AppData\Local\Temp\MSDCSC\msdcsc.exe
| MD5 | 60be5a06e0c4b00ba862f92c7e2b0a45 |
| SHA1 | 4a4b2ea657429c71f83aeb054b0c91ef73a6fa80 |
| SHA256 | fb4cd6a6485ddf6c6f0325e6b795cfd85d24ac962b025c7b4d70d8c265e8591e |
| SHA512 | 9f4706ee20226ec48b997ed8beaad277a05045fcfb8ace9c25f49b4c71e7fe8cfa2335af93258c0f6c1028622a53ccfe237a3dcf4e2f3d0bf00f712cecea787a |
C:\Users\Admin\AppData\Local\Temp\MSDCSC\msdcsc.exe
| MD5 | 60be5a06e0c4b00ba862f92c7e2b0a45 |
| SHA1 | 4a4b2ea657429c71f83aeb054b0c91ef73a6fa80 |
| SHA256 | fb4cd6a6485ddf6c6f0325e6b795cfd85d24ac962b025c7b4d70d8c265e8591e |
| SHA512 | 9f4706ee20226ec48b997ed8beaad277a05045fcfb8ace9c25f49b4c71e7fe8cfa2335af93258c0f6c1028622a53ccfe237a3dcf4e2f3d0bf00f712cecea787a |
memory/3192-140-0x0000000000000000-mapping.dmp
C:\Users\Admin\AppData\Local\Temp\MSDCSC\msdcsc.exe
| MD5 | 60be5a06e0c4b00ba862f92c7e2b0a45 |
| SHA1 | 4a4b2ea657429c71f83aeb054b0c91ef73a6fa80 |
| SHA256 | fb4cd6a6485ddf6c6f0325e6b795cfd85d24ac962b025c7b4d70d8c265e8591e |
| SHA512 | 9f4706ee20226ec48b997ed8beaad277a05045fcfb8ace9c25f49b4c71e7fe8cfa2335af93258c0f6c1028622a53ccfe237a3dcf4e2f3d0bf00f712cecea787a |
memory/3504-145-0x0000000000000000-mapping.dmp
memory/3192-146-0x0000000000400000-0x00000000004CA000-memory.dmp
memory/3192-147-0x0000000000400000-0x00000000004CA000-memory.dmp
Analysis: behavioral1
Detonation Overview
Submitted
2022-10-11 06:15
Reported
2022-10-11 07:50
Platform
win7-20220812-en
Max time kernel
40s
Max time network
44s
Command Line
Signatures
Processes
C:\Users\Admin\AppData\Local\Temp\fb4cd6a6485ddf6c6f0325e6b795cfd85d24ac962b025c7b4d70d8c265e8591e.exe
"C:\Users\Admin\AppData\Local\Temp\fb4cd6a6485ddf6c6f0325e6b795cfd85d24ac962b025c7b4d70d8c265e8591e.exe"