Analysis Overview
SHA256
c5fb7187fb4eeb1ab4d725febec0c79ec45ae67498fbc2007b00e0cae11c8a02
Threat Level: Known bad
The file c5fb7187fb4eeb1ab4d725febec0c79ec45ae67498fbc2007b00e0cae11c8a02 was found to be: Known bad.
Malicious Activity Summary
Suspicious use of NtCreateProcessExOtherParentProcess
Sodinokibi family
Enumerates connected drives
Program crash
Modifies data under HKEY_USERS
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
MITRE ATT&CK
Enterprise Matrix V6
Analysis: static1
Detonation Overview
Reported
2022-01-24 01:06
Signatures
Sodinokibi family
Analysis: behavioral1
Detonation Overview
Submitted
2022-01-24 01:06
Reported
2022-01-24 01:22
Platform
win7-en-20211208
Max time kernel
122s
Max time network
125s
Command Line
Signatures
Enumerates connected drives
| Description | Indicator | Process | Target |
| File opened (read-only) | \??\J: | C:\Windows\SysWOW64\rundll32.exe | N/A |
| File opened (read-only) | \??\P: | C:\Windows\SysWOW64\rundll32.exe | N/A |
| File opened (read-only) | \??\R: | C:\Windows\SysWOW64\rundll32.exe | N/A |
| File opened (read-only) | \??\T: | C:\Windows\SysWOW64\rundll32.exe | N/A |
| File opened (read-only) | \??\X: | C:\Windows\SysWOW64\rundll32.exe | N/A |
| File opened (read-only) | \??\Y: | C:\Windows\SysWOW64\rundll32.exe | N/A |
| File opened (read-only) | \??\Z: | C:\Windows\SysWOW64\rundll32.exe | N/A |
| File opened (read-only) | \??\G: | C:\Windows\SysWOW64\rundll32.exe | N/A |
| File opened (read-only) | \??\B: | C:\Windows\SysWOW64\rundll32.exe | N/A |
| File opened (read-only) | \??\L: | C:\Windows\SysWOW64\rundll32.exe | N/A |
| File opened (read-only) | \??\O: | C:\Windows\SysWOW64\rundll32.exe | N/A |
| File opened (read-only) | \??\W: | C:\Windows\SysWOW64\rundll32.exe | N/A |
| File opened (read-only) | \??\A: | C:\Windows\SysWOW64\rundll32.exe | N/A |
| File opened (read-only) | \??\H: | C:\Windows\SysWOW64\rundll32.exe | N/A |
| File opened (read-only) | \??\I: | C:\Windows\SysWOW64\rundll32.exe | N/A |
| File opened (read-only) | \??\N: | C:\Windows\SysWOW64\rundll32.exe | N/A |
| File opened (read-only) | \??\Q: | C:\Windows\SysWOW64\rundll32.exe | N/A |
| File opened (read-only) | \??\S: | C:\Windows\SysWOW64\rundll32.exe | N/A |
| File opened (read-only) | \??\U: | C:\Windows\SysWOW64\rundll32.exe | N/A |
| File opened (read-only) | \??\V: | C:\Windows\SysWOW64\rundll32.exe | N/A |
| File opened (read-only) | \??\E: | C:\Windows\SysWOW64\rundll32.exe | N/A |
| File opened (read-only) | \??\K: | C:\Windows\SysWOW64\rundll32.exe | N/A |
| File opened (read-only) | \??\M: | C:\Windows\SysWOW64\rundll32.exe | N/A |
| File opened (read-only) | \??\F: | C:\Windows\SysWOW64\rundll32.exe | N/A |
Modifies data under HKEY_USERS
| Description | Indicator | Process | Target |
| Key created | \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\StartPage | C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe | N/A |
| Set value (data) | \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Explorer\StartPage\StartMenu_Start_Time = f0aceb8fc010d801 | C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe | N/A |
Suspicious behavior: EnumeratesProcesses
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\rundll32.exe | N/A |
| N/A | N/A | C:\Windows\SysWOW64\rundll32.exe | N/A |
| N/A | N/A | C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe | N/A |
Suspicious use of AdjustPrivilegeToken
| Description | Indicator | Process | Target |
| Token: SeDebugPrivilege | N/A | C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe | N/A |
| Token: SeBackupPrivilege | N/A | C:\Windows\system32\vssvc.exe | N/A |
| Token: SeRestorePrivilege | N/A | C:\Windows\system32\vssvc.exe | N/A |
| Token: SeAuditPrivilege | N/A | C:\Windows\system32\vssvc.exe | N/A |
Suspicious use of WriteProcessMemory
Processes
C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\c5fb7187fb4eeb1ab4d725febec0c79ec45ae67498fbc2007b00e0cae11c8a02.dll,#1
C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\c5fb7187fb4eeb1ab4d725febec0c79ec45ae67498fbc2007b00e0cae11c8a02.dll,#1
C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
powershell -e RwBlAHQALQBXAG0AaQBPAGIAagBlAGMAdAAgAFcAaQBuADMAMgBfAFMAaABhAGQAbwB3AGMAbwBwAHkAIAB8ACAARgBvAHIARQBhAGMAaAAtAE8AYgBqAGUAYwB0ACAAewAkAF8ALgBEAGUAbABlAHQAZQAoACkAOwB9AA==
C:\Windows\system32\vssvc.exe
C:\Windows\system32\vssvc.exe
Network
| Country | Destination | Domain | Proto |
| US | 104.18.11.39:80 | tcp |
Files
memory/2036-54-0x0000000075CE1000-0x0000000075CE3000-memory.dmp
memory/2036-57-0x00000000030F0000-0x000000000321D000-memory.dmp
memory/2036-58-0x00000000002B0000-0x00000000002CF000-memory.dmp
memory/2036-59-0x00000000034B0000-0x00000000035B9000-memory.dmp
memory/2036-63-0x0000000000190000-0x0000000000191000-memory.dmp
memory/2036-62-0x0000000000180000-0x0000000000181000-memory.dmp
memory/2036-61-0x0000000000170000-0x0000000000171000-memory.dmp
memory/2036-60-0x0000000000160000-0x000000000016A000-memory.dmp
memory/2036-64-0x00000000001A0000-0x00000000001A6000-memory.dmp
memory/1748-65-0x000007FEFC261000-0x000007FEFC263000-memory.dmp
memory/1748-66-0x00000000024B0000-0x00000000024B2000-memory.dmp
memory/1748-68-0x00000000024B2000-0x00000000024B4000-memory.dmp
memory/1748-69-0x00000000024B4000-0x00000000024B7000-memory.dmp
memory/1748-67-0x000007FEF34E0000-0x000007FEF403D000-memory.dmp
memory/1748-70-0x00000000024BB000-0x00000000024DA000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2022-01-24 01:06
Reported
2022-01-24 01:22
Platform
win10-en-20211208
Max time kernel
119s
Max time network
159s
Command Line
Signatures
Suspicious use of NtCreateProcessExOtherParentProcess
| Description | Indicator | Process | Target |
| PID 1264 created 3220 | N/A | C:\Windows\SysWOW64\WerFault.exe | C:\Windows\SysWOW64\rundll32.exe |
Program crash
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\WerFault.exe | C:\Windows\SysWOW64\rundll32.exe |
Suspicious behavior: EnumeratesProcesses
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\WerFault.exe | N/A |
| N/A | N/A | C:\Windows\SysWOW64\WerFault.exe | N/A |
| N/A | N/A | C:\Windows\SysWOW64\WerFault.exe | N/A |
| N/A | N/A | C:\Windows\SysWOW64\WerFault.exe | N/A |
| N/A | N/A | C:\Windows\SysWOW64\WerFault.exe | N/A |
| N/A | N/A | C:\Windows\SysWOW64\WerFault.exe | N/A |
| N/A | N/A | C:\Windows\SysWOW64\WerFault.exe | N/A |
| N/A | N/A | C:\Windows\SysWOW64\WerFault.exe | N/A |
| N/A | N/A | C:\Windows\SysWOW64\WerFault.exe | N/A |
| N/A | N/A | C:\Windows\SysWOW64\WerFault.exe | N/A |
| N/A | N/A | C:\Windows\SysWOW64\WerFault.exe | N/A |
| N/A | N/A | C:\Windows\SysWOW64\WerFault.exe | N/A |
| N/A | N/A | C:\Windows\SysWOW64\WerFault.exe | N/A |
Suspicious use of AdjustPrivilegeToken
| Description | Indicator | Process | Target |
| Token: SeRestorePrivilege | N/A | C:\Windows\SysWOW64\WerFault.exe | N/A |
| Token: SeBackupPrivilege | N/A | C:\Windows\SysWOW64\WerFault.exe | N/A |
| Token: SeDebugPrivilege | N/A | C:\Windows\SysWOW64\WerFault.exe | N/A |
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 2416 wrote to memory of 3220 | N/A | C:\Windows\system32\rundll32.exe | C:\Windows\SysWOW64\rundll32.exe |
| PID 2416 wrote to memory of 3220 | N/A | C:\Windows\system32\rundll32.exe | C:\Windows\SysWOW64\rundll32.exe |
| PID 2416 wrote to memory of 3220 | N/A | C:\Windows\system32\rundll32.exe | C:\Windows\SysWOW64\rundll32.exe |
Processes
C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\c5fb7187fb4eeb1ab4d725febec0c79ec45ae67498fbc2007b00e0cae11c8a02.dll,#1
C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\c5fb7187fb4eeb1ab4d725febec0c79ec45ae67498fbc2007b00e0cae11c8a02.dll,#1
C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 3220 -s 804
Network
| Country | Destination | Domain | Proto |
| US | 52.109.8.21:443 | tcp |
Files
memory/3220-119-0x0000000006060000-0x0000000006061000-memory.dmp
memory/3220-118-0x0000000006050000-0x000000000605A000-memory.dmp
memory/3220-121-0x0000000006220000-0x0000000006221000-memory.dmp
memory/3220-120-0x0000000006080000-0x00000000060A3000-memory.dmp
memory/3220-122-0x0000000006230000-0x0000000006236000-memory.dmp