Analysis Overview
SHA256
e78da21d88d678da382cf9f10be55d75ce6f5d438fc2bb6471f82a51575ae1ca
Threat Level: Known bad
The file e78da21d88d678da382cf9f10be55d75ce6f5d438fc2bb6471f82a51575ae1ca was found to be: Known bad.
Malicious Activity Summary
Darkcomet
Modifies WinLogon for persistence
Sets file to hidden
Checks computer location settings
Executes dropped EXE
Loads dropped DLL
Uses the VBS compiler for execution
Adds Run key to start application
Suspicious use of SetThreadContext
Enumerates physical storage devices
Unsigned PE
Suspicious use of WriteProcessMemory
Suspicious use of AdjustPrivilegeToken
Views/modifies file attributes
Modifies registry class
MITRE ATT&CK
Enterprise Matrix V15
Analysis: static1
Detonation Overview
Reported
2024-04-14 02:45
Signatures
Unsigned PE
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Analysis: behavioral1
Detonation Overview
Submitted
2024-04-14 02:45
Reported
2024-04-14 02:48
Platform
win7-20240221-en
Max time kernel
142s
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:\\Users\\Admin\\Documents\\MSDCSC\\msdcsc.exe" | C:\Users\Admin\AppData\Local\Temp\vbc.exe | N/A |
Sets file to hidden
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\attrib.exe | N/A |
| N/A | N/A | C:\Windows\SysWOW64\attrib.exe | N/A |
Executes dropped EXE
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\vbc.exe | N/A |
Loads dropped DLL
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\e78da21d88d678da382cf9f10be55d75ce6f5d438fc2bb6471f82a51575ae1ca.exe | N/A |
Uses the VBS compiler for execution
Adds Run key to start application
| Description | Indicator | Process | Target |
| Set value (str) | \REGISTRY\USER\S-1-5-21-3452737119-3959686427-228443150-1000\Software\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\Users\\Admin\\Documents\\MSDCSC\\msdcsc.exe" | C:\Users\Admin\AppData\Local\Temp\vbc.exe | N/A |
Suspicious use of SetThreadContext
| Description | Indicator | Process | Target |
| PID 1712 set thread context of 2144 | N/A | C:\Users\Admin\AppData\Local\Temp\e78da21d88d678da382cf9f10be55d75ce6f5d438fc2bb6471f82a51575ae1ca.exe | C:\Users\Admin\AppData\Local\Temp\vbc.exe |
Enumerates physical storage devices
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Views/modifies file attributes
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\attrib.exe | N/A |
| N/A | N/A | C:\Windows\SysWOW64\attrib.exe | N/A |
Processes
C:\Users\Admin\AppData\Local\Temp\e78da21d88d678da382cf9f10be55d75ce6f5d438fc2bb6471f82a51575ae1ca.exe
"C:\Users\Admin\AppData\Local\Temp\e78da21d88d678da382cf9f10be55d75ce6f5d438fc2bb6471f82a51575ae1ca.exe"
C:\Users\Admin\AppData\Local\Temp\vbc.exe
C:\Users\Admin\AppData\Local\Temp\vbc.exe
C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /k attrib "C:\Users\Admin\AppData\Local\Temp\e78da21d88d678da382cf9f10be55d75ce6f5d438fc2bb6471f82a51575ae1ca.exe" +s +h
C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /k attrib "C:\Users\Admin\AppData\Local\Temp" +s +h
C:\Windows\SysWOW64\notepad.exe
notepad
C:\Windows\SysWOW64\attrib.exe
attrib "C:\Users\Admin\AppData\Local\Temp" +s +h
C:\Windows\SysWOW64\attrib.exe
attrib "C:\Users\Admin\AppData\Local\Temp\e78da21d88d678da382cf9f10be55d75ce6f5d438fc2bb6471f82a51575ae1ca.exe" +s +h
Network
Files
memory/1712-0-0x0000000074660000-0x0000000074C0B000-memory.dmp
memory/1712-1-0x0000000074660000-0x0000000074C0B000-memory.dmp
memory/1712-2-0x0000000000B70000-0x0000000000BB0000-memory.dmp
\Users\Admin\AppData\Local\Temp\vbc.exe
| MD5 | 34aa912defa18c2c129f1e09d75c1d7e |
| SHA1 | 9c3046324657505a30ecd9b1fdb46c05bde7d470 |
| SHA256 | 6df94b7fa33f1b87142adc39b3db0613fc520d9e7a5fd6a5301dd7f51f8d0386 |
| SHA512 | d1ea9368f5d7166180612fd763c87afb647d088498887961f5e7fb0a10f4a808bd5928e8a3666d70ff794093c51ecca8816f75dd47652fd4eb23dce7f9aa1f98 |
memory/2144-9-0x0000000000400000-0x00000000004BA000-memory.dmp
memory/2144-7-0x0000000000400000-0x00000000004BA000-memory.dmp
memory/2144-11-0x0000000000400000-0x00000000004BA000-memory.dmp
memory/2144-13-0x0000000000400000-0x00000000004BA000-memory.dmp
memory/2144-15-0x0000000000400000-0x00000000004BA000-memory.dmp
memory/2144-17-0x0000000000400000-0x00000000004BA000-memory.dmp
memory/2144-19-0x0000000000400000-0x00000000004BA000-memory.dmp
memory/2144-20-0x0000000000400000-0x00000000004BA000-memory.dmp
memory/2144-21-0x000000007EFDE000-0x000000007EFDF000-memory.dmp
memory/2144-23-0x0000000000400000-0x00000000004BA000-memory.dmp
memory/2144-26-0x0000000000020000-0x0000000000021000-memory.dmp
memory/2144-25-0x0000000000400000-0x00000000004BA000-memory.dmp
memory/1712-30-0x0000000074660000-0x0000000074C0B000-memory.dmp
memory/2144-29-0x0000000000400000-0x00000000004BA000-memory.dmp
memory/2144-31-0x0000000000400000-0x00000000004BA000-memory.dmp
memory/2144-32-0x0000000000400000-0x00000000004BA000-memory.dmp
memory/2144-33-0x00000000004C0000-0x00000000004C1000-memory.dmp
memory/2144-39-0x0000000000400000-0x00000000004BA000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2024-04-14 02:45
Reported
2024-04-14 02:48
Platform
win10v2004-20240226-en
Max time kernel
142s
Max time network
151s
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\\Documents\\MSDCSC\\msdcsc.exe" | C:\Users\Admin\AppData\Local\Temp\vbc.exe | N/A |
Sets file to hidden
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\attrib.exe | N/A |
| N/A | N/A | C:\Windows\SysWOW64\attrib.exe | N/A |
Checks computer location settings
| Description | Indicator | Process | Target |
| Key value queried | \REGISTRY\USER\S-1-5-21-3808065738-1666277613-1125846146-1000\Control Panel\International\Geo\Nation | C:\Users\Admin\AppData\Local\Temp\vbc.exe | N/A |
Executes dropped EXE
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\vbc.exe | N/A |
| N/A | N/A | C:\Users\Admin\Documents\MSDCSC\msdcsc.exe | N/A |
Uses the VBS compiler for execution
Adds Run key to start application
| Description | Indicator | Process | Target |
| Set value (str) | \REGISTRY\USER\S-1-5-21-3808065738-1666277613-1125846146-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\Users\\Admin\\Documents\\MSDCSC\\msdcsc.exe" | C:\Users\Admin\AppData\Local\Temp\vbc.exe | N/A |
Suspicious use of SetThreadContext
| Description | Indicator | Process | Target |
| PID 3968 set thread context of 4856 | N/A | C:\Users\Admin\AppData\Local\Temp\e78da21d88d678da382cf9f10be55d75ce6f5d438fc2bb6471f82a51575ae1ca.exe | C:\Users\Admin\AppData\Local\Temp\vbc.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\vbc.exe | N/A |
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Views/modifies file attributes
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\attrib.exe | N/A |
| N/A | N/A | C:\Windows\SysWOW64\attrib.exe | N/A |
Processes
C:\Users\Admin\AppData\Local\Temp\e78da21d88d678da382cf9f10be55d75ce6f5d438fc2bb6471f82a51575ae1ca.exe
"C:\Users\Admin\AppData\Local\Temp\e78da21d88d678da382cf9f10be55d75ce6f5d438fc2bb6471f82a51575ae1ca.exe"
C:\Users\Admin\AppData\Local\Temp\vbc.exe
C:\Users\Admin\AppData\Local\Temp\vbc.exe
C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /k attrib "C:\Users\Admin\AppData\Local\Temp\vbc.exe" +s +h
C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /k attrib "C:\Users\Admin\AppData\Local\Temp" +s +h
C:\Windows\SysWOW64\notepad.exe
notepad
C:\Windows\SysWOW64\attrib.exe
attrib "C:\Users\Admin\AppData\Local\Temp" +s +h
C:\Windows\SysWOW64\attrib.exe
attrib "C:\Users\Admin\AppData\Local\Temp\vbc.exe" +s +h
C:\Users\Admin\Documents\MSDCSC\msdcsc.exe
"C:\Users\Admin\Documents\MSDCSC\msdcsc.exe"
C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --mojo-platform-channel-handle=1420 --field-trial-handle=1928,i,13242902252791919845,10377620236057253993,262144 --variations-seed-version /prefetch:8
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | 172.210.232.199.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 58.55.71.13.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 133.32.126.40.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 95.221.229.192.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 183.142.211.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 183.59.114.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 171.39.242.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 240.221.184.93.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 240.197.17.2.in-addr.arpa | udp |
| US | 8.8.8.8:53 | chromewebstore.googleapis.com | udp |
| US | 8.8.8.8:53 | chromewebstore.googleapis.com | udp |
| GB | 216.58.201.106:443 | chromewebstore.googleapis.com | tcp |
| US | 8.8.8.8:53 | 106.201.58.216.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 104.246.116.51.in-addr.arpa | udp |
Files
memory/3968-0-0x0000000075120000-0x00000000756D1000-memory.dmp
memory/3968-1-0x0000000075120000-0x00000000756D1000-memory.dmp
memory/3968-2-0x0000000000D50000-0x0000000000D60000-memory.dmp
memory/4856-5-0x0000000000400000-0x00000000004BA000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\vbc.exe
| MD5 | d881de17aa8f2e2c08cbb7b265f928f9 |
| SHA1 | 08936aebc87decf0af6e8eada191062b5e65ac2a |
| SHA256 | b3a37093609f9a20ad60b85a9fa9de2ba674cba9b5bd687729440c70ba619ca0 |
| SHA512 | 5f23bfb1b8740247b36ed0ab741738c7d4c949736129e767213e321607d1ccd3e3a8428e4ba44bd28a275b5e3f6206285b1a522514b7ef7ea5e698d90a713d34 |
memory/4856-9-0x0000000000400000-0x00000000004BA000-memory.dmp
memory/4856-10-0x0000000000400000-0x00000000004BA000-memory.dmp
memory/3968-11-0x0000000075120000-0x00000000756D1000-memory.dmp
memory/4856-13-0x0000000000400000-0x00000000004BA000-memory.dmp
memory/4856-14-0x0000000000A40000-0x0000000000A41000-memory.dmp
memory/220-18-0x00000000001E0000-0x00000000001E1000-memory.dmp
memory/4856-77-0x0000000000400000-0x00000000004BA000-memory.dmp