Analysis Overview
SHA256
f3fa9e7e35250ca152f3604b3611a5822e4c5fe2ff6c7d8e6e5c7aacf5f9992f
Threat Level: Known bad
The file f3fa9e7e35250ca152f3604b3611a5822e4c5fe2ff6c7d8e6e5c7aacf5f9992f was found to be: Known bad.
Malicious Activity Summary
Darkcomet
Uses the VBS compiler for execution
Adds Run key to start application
Drops desktop.ini file(s)
Suspicious use of SetThreadContext
Drops file in Windows directory
Suspicious use of AdjustPrivilegeToken
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
MITRE ATT&CK
Enterprise Matrix V6
Analysis: static1
Detonation Overview
Reported
2022-10-19 15:26
Signatures
Analysis: behavioral1
Detonation Overview
Submitted
2022-10-19 15:26
Reported
2022-10-19 17:05
Platform
win7-20220812-en
Max time kernel
170s
Max time network
46s
Command Line
Signatures
Darkcomet
Uses the VBS compiler for execution
Adds Run key to start application
| Description | Indicator | Process | Target |
| Set value (str) | \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\Google Chrome = "C:\\Users\\Admin\\AppData\\Roaming\\Chrome.exe" | C:\Users\Admin\AppData\Local\Temp\f3fa9e7e35250ca152f3604b3611a5822e4c5fe2ff6c7d8e6e5c7aacf5f9992f.exe | N/A |
Suspicious use of SetThreadContext
| Description | Indicator | Process | Target |
| PID 1672 set thread context of 1048 | N/A | C:\Users\Admin\AppData\Local\Temp\f3fa9e7e35250ca152f3604b3611a5822e4c5fe2ff6c7d8e6e5c7aacf5f9992f.exe | C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe |
Suspicious use of AdjustPrivilegeToken
Suspicious use of SetWindowsHookEx
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe | N/A |
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\f3fa9e7e35250ca152f3604b3611a5822e4c5fe2ff6c7d8e6e5c7aacf5f9992f.exe
"C:\Users\Admin\AppData\Local\Temp\f3fa9e7e35250ca152f3604b3611a5822e4c5fe2ff6c7d8e6e5c7aacf5f9992f.exe"
C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe
C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe
Network
| Country | Destination | Domain | Proto |
| N/A | 127.0.0.1:1606 | tcp | |
| N/A | 127.0.0.1:1606 | tcp | |
| N/A | 127.0.0.1:1606 | tcp | |
| N/A | 127.0.0.1:1606 | tcp | |
| N/A | 127.0.0.1:1606 | tcp | |
| N/A | 127.0.0.1:1606 | tcp | |
| N/A | 127.0.0.1:1606 | tcp | |
| N/A | 127.0.0.1:1606 | tcp | |
| N/A | 127.0.0.1:1606 | tcp | |
| N/A | 127.0.0.1:1606 | tcp | |
| N/A | 127.0.0.1:1606 | tcp | |
| N/A | 127.0.0.1:1606 | tcp | |
| N/A | 127.0.0.1:1606 | tcp | |
| N/A | 127.0.0.1:1606 | tcp | |
| N/A | 127.0.0.1:1606 | tcp | |
| N/A | 127.0.0.1:1606 | tcp | |
| N/A | 127.0.0.1:1606 | tcp | |
| N/A | 127.0.0.1:1606 | tcp | |
| N/A | 127.0.0.1:1606 | tcp | |
| N/A | 127.0.0.1:1606 | tcp | |
| N/A | 127.0.0.1:1606 | tcp | |
| N/A | 127.0.0.1:1606 | tcp | |
| N/A | 127.0.0.1:1606 | tcp | |
| N/A | 127.0.0.1:1606 | tcp | |
| N/A | 127.0.0.1:1606 | tcp | |
| N/A | 127.0.0.1:1606 | tcp | |
| N/A | 127.0.0.1:1606 | tcp | |
| N/A | 127.0.0.1:1606 | tcp | |
| N/A | 127.0.0.1:1606 | tcp | |
| N/A | 127.0.0.1:1606 | tcp | |
| N/A | 127.0.0.1:1606 | tcp | |
| N/A | 127.0.0.1:1606 | tcp | |
| N/A | 127.0.0.1:1606 | tcp | |
| N/A | 127.0.0.1:1606 | tcp | |
| N/A | 127.0.0.1:1606 | tcp | |
| N/A | 127.0.0.1:1606 | tcp | |
| N/A | 127.0.0.1:1606 | tcp | |
| N/A | 127.0.0.1:1606 | tcp | |
| N/A | 127.0.0.1:1606 | tcp | |
| N/A | 127.0.0.1:1606 | tcp | |
| N/A | 127.0.0.1:1606 | tcp | |
| N/A | 127.0.0.1:1606 | tcp | |
| N/A | 127.0.0.1:1606 | tcp | |
| N/A | 127.0.0.1:1606 | tcp | |
| N/A | 127.0.0.1:1606 | tcp | |
| N/A | 127.0.0.1:1606 | tcp | |
| N/A | 127.0.0.1:1606 | tcp | |
| N/A | 127.0.0.1:1606 | tcp | |
| N/A | 127.0.0.1:1606 | tcp | |
| N/A | 127.0.0.1:1606 | tcp | |
| N/A | 127.0.0.1:1606 | tcp | |
| N/A | 127.0.0.1:1606 | tcp | |
| N/A | 127.0.0.1:1606 | tcp | |
| N/A | 127.0.0.1:1606 | tcp | |
| N/A | 127.0.0.1:1606 | tcp | |
| N/A | 127.0.0.1:1606 | tcp | |
| N/A | 127.0.0.1:1606 | tcp | |
| N/A | 127.0.0.1:1606 | tcp | |
| N/A | 127.0.0.1:1606 | tcp |
Files
memory/1672-54-0x00000000753C1000-0x00000000753C3000-memory.dmp
memory/1672-55-0x00000000742E0000-0x000000007488B000-memory.dmp
memory/1048-56-0x0000000000400000-0x00000000004B2000-memory.dmp
memory/1048-58-0x0000000000400000-0x00000000004B2000-memory.dmp
memory/1048-57-0x000000000048F888-mapping.dmp
memory/1672-59-0x00000000742E0000-0x000000007488B000-memory.dmp
memory/1048-61-0x0000000000400000-0x00000000004B2000-memory.dmp
memory/1048-62-0x0000000000400000-0x00000000004B2000-memory.dmp
memory/1048-63-0x0000000000400000-0x00000000004B2000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2022-10-19 15:26
Reported
2022-10-19 17:04
Platform
win10v2004-20220901-en
Max time kernel
150s
Max time network
155s
Command Line
Signatures
Darkcomet
Uses the VBS compiler for execution
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\Google Chrome = "C:\\Users\\Admin\\AppData\\Roaming\\Chrome.exe" | C:\Users\Admin\AppData\Local\Temp\f3fa9e7e35250ca152f3604b3611a5822e4c5fe2ff6c7d8e6e5c7aacf5f9992f.exe | N/A |
Drops desktop.ini file(s)
| Description | Indicator | Process | Target |
| File created | C:\Windows\assembly\Desktop.ini | C:\Users\Admin\AppData\Local\Temp\f3fa9e7e35250ca152f3604b3611a5822e4c5fe2ff6c7d8e6e5c7aacf5f9992f.exe | N/A |
| File opened for modification | C:\Windows\assembly\Desktop.ini | C:\Users\Admin\AppData\Local\Temp\f3fa9e7e35250ca152f3604b3611a5822e4c5fe2ff6c7d8e6e5c7aacf5f9992f.exe | N/A |
Suspicious use of SetThreadContext
| Description | Indicator | Process | Target |
| PID 2444 set thread context of 5056 | N/A | C:\Users\Admin\AppData\Local\Temp\f3fa9e7e35250ca152f3604b3611a5822e4c5fe2ff6c7d8e6e5c7aacf5f9992f.exe | C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe |
Drops file in Windows directory
| Description | Indicator | Process | Target |
| File created | C:\Windows\assembly\Desktop.ini | C:\Users\Admin\AppData\Local\Temp\f3fa9e7e35250ca152f3604b3611a5822e4c5fe2ff6c7d8e6e5c7aacf5f9992f.exe | N/A |
| File opened for modification | C:\Windows\assembly\Desktop.ini | C:\Users\Admin\AppData\Local\Temp\f3fa9e7e35250ca152f3604b3611a5822e4c5fe2ff6c7d8e6e5c7aacf5f9992f.exe | N/A |
| File opened for modification | C:\Windows\assembly | C:\Users\Admin\AppData\Local\Temp\f3fa9e7e35250ca152f3604b3611a5822e4c5fe2ff6c7d8e6e5c7aacf5f9992f.exe | N/A |
Suspicious use of AdjustPrivilegeToken
Suspicious use of SetWindowsHookEx
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe | N/A |
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\f3fa9e7e35250ca152f3604b3611a5822e4c5fe2ff6c7d8e6e5c7aacf5f9992f.exe
"C:\Users\Admin\AppData\Local\Temp\f3fa9e7e35250ca152f3604b3611a5822e4c5fe2ff6c7d8e6e5c7aacf5f9992f.exe"
C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe
C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe
Network
| Country | Destination | Domain | Proto |
| N/A | 127.0.0.1:1606 | tcp | |
| N/A | 127.0.0.1:1606 | tcp | |
| N/A | 127.0.0.1:1606 | tcp | |
| N/A | 127.0.0.1:1606 | tcp | |
| N/A | 127.0.0.1:1606 | tcp | |
| N/A | 127.0.0.1:1606 | tcp | |
| N/A | 127.0.0.1:1606 | tcp | |
| N/A | 127.0.0.1:1606 | tcp | |
| N/A | 127.0.0.1:1606 | tcp | |
| N/A | 127.0.0.1:1606 | tcp | |
| US | 20.42.72.131:443 | tcp | |
| N/A | 127.0.0.1:1606 | tcp | |
| N/A | 127.0.0.1:1606 | tcp | |
| N/A | 127.0.0.1:1606 | tcp | |
| N/A | 127.0.0.1:1606 | tcp | |
| N/A | 127.0.0.1:1606 | tcp | |
| N/A | 127.0.0.1:1606 | tcp | |
| BE | 67.24.25.254:80 | tcp | |
| BE | 67.24.25.254:80 | tcp | |
| BE | 67.24.25.254:80 | tcp | |
| N/A | 127.0.0.1:1606 | tcp | |
| N/A | 127.0.0.1:1606 | tcp | |
| N/A | 127.0.0.1:1606 | tcp | |
| N/A | 127.0.0.1:1606 | tcp | |
| N/A | 127.0.0.1:1606 | tcp | |
| N/A | 127.0.0.1:1606 | tcp | |
| N/A | 127.0.0.1:1606 | tcp | |
| N/A | 127.0.0.1:1606 | tcp | |
| N/A | 127.0.0.1:1606 | tcp | |
| N/A | 127.0.0.1:1606 | tcp | |
| N/A | 127.0.0.1:1606 | tcp | |
| N/A | 127.0.0.1:1606 | tcp | |
| N/A | 127.0.0.1:1606 | tcp | |
| N/A | 127.0.0.1:1606 | tcp | |
| N/A | 127.0.0.1:1606 | tcp | |
| N/A | 127.0.0.1:1606 | tcp | |
| N/A | 127.0.0.1:1606 | tcp | |
| N/A | 127.0.0.1:1606 | tcp | |
| N/A | 127.0.0.1:1606 | tcp | |
| N/A | 127.0.0.1:1606 | tcp | |
| N/A | 127.0.0.1:1606 | tcp | |
| N/A | 127.0.0.1:1606 | tcp | |
| N/A | 127.0.0.1:1606 | tcp | |
| N/A | 127.0.0.1:1606 | tcp | |
| N/A | 127.0.0.1:1606 | tcp | |
| N/A | 127.0.0.1:1606 | tcp | |
| N/A | 127.0.0.1:1606 | tcp | |
| N/A | 127.0.0.1:1606 | tcp | |
| N/A | 127.0.0.1:1606 | tcp | |
| N/A | 127.0.0.1:1606 | tcp | |
| N/A | 127.0.0.1:1606 | tcp | |
| N/A | 127.0.0.1:1606 | tcp | |
| N/A | 127.0.0.1:1606 | tcp | |
| N/A | 127.0.0.1:1606 | tcp | |
| N/A | 127.0.0.1:1606 | tcp | |
| N/A | 127.0.0.1:1606 | tcp | |
| N/A | 127.0.0.1:1606 | tcp | |
| N/A | 127.0.0.1:1606 | tcp | |
| N/A | 127.0.0.1:1606 | tcp | |
| N/A | 127.0.0.1:1606 | tcp | |
| N/A | 127.0.0.1:1606 | tcp | |
| N/A | 127.0.0.1:1606 | tcp | |
| N/A | 127.0.0.1:1606 | tcp | |
| N/A | 127.0.0.1:1606 | tcp | |
| N/A | 127.0.0.1:1606 | tcp | |
| N/A | 127.0.0.1:1606 | tcp | |
| N/A | 127.0.0.1:1606 | tcp | |
| N/A | 127.0.0.1:1606 | tcp | |
| N/A | 127.0.0.1:1606 | tcp | |
| N/A | 127.0.0.1:1606 | tcp |
Files
memory/2444-132-0x0000000074F50000-0x0000000075501000-memory.dmp
memory/5056-133-0x0000000000000000-mapping.dmp
memory/5056-134-0x0000000000400000-0x00000000004B2000-memory.dmp
memory/5056-135-0x0000000000400000-0x00000000004B2000-memory.dmp
memory/5056-136-0x0000000000400000-0x00000000004B2000-memory.dmp
memory/2444-137-0x0000000074F50000-0x0000000075501000-memory.dmp
memory/5056-138-0x0000000000400000-0x00000000004B2000-memory.dmp
memory/5056-139-0x0000000000400000-0x00000000004B2000-memory.dmp