Analysis Overview
SHA256
70c45fc843dee69c8a55b7910d91d0b4dd371c7ea59d8eb43ff3d79c19064b92
Threat Level: Known bad
The file 70c45fc843dee69c8a55b7910d91d0b4dd371c7ea59d8eb43ff3d79c19064b92.exe was found to be: Known bad.
Malicious Activity Summary
Remcos
Executes dropped EXE
Loads dropped DLL
Checks computer location settings
Adds Run key to start application
Suspicious use of SetThreadContext
Enumerates physical storage devices
Unsigned PE
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
MITRE ATT&CK
Enterprise Matrix V15
Analysis: static1
Detonation Overview
Reported
2024-04-08 12:17
Signatures
Unsigned PE
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Analysis: behavioral1
Detonation Overview
Submitted
2024-04-08 12:17
Reported
2024-04-08 12:19
Platform
win7-20240221-en
Max time kernel
150s
Max time network
149s
Command Line
Signatures
Remcos
Executes dropped EXE
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Roaming\windowsfiles\windowsfiles.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Roaming\windowsfiles\windowsfiles.exe | N/A |
Loads dropped DLL
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\70c45fc843dee69c8a55b7910d91d0b4dd371c7ea59d8eb43ff3d79c19064b92.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Roaming\windowsfiles\windowsfiles.exe | N/A |
Adds Run key to start application
| Description | Indicator | Process | Target |
| Set value (str) | \REGISTRY\USER\S-1-5-21-778096762-2241304387-192235952-1000\Software\Microsoft\Windows\CurrentVersion\Run\Rmc-NMB4R7 = "\"C:\\Users\\Admin\\AppData\\Roaming\\windowsfiles\\windowsfiles.exe\"" | C:\Users\Admin\AppData\Roaming\windowsfiles\windowsfiles.exe | N/A |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\Rmc-NMB4R7 = "\"C:\\Users\\Admin\\AppData\\Roaming\\windowsfiles\\windowsfiles.exe\"" | C:\Users\Admin\AppData\Roaming\windowsfiles\windowsfiles.exe | N/A |
| Set value (str) | \REGISTRY\USER\S-1-5-21-778096762-2241304387-192235952-1000\Software\Microsoft\Windows\CurrentVersion\Run\Rmc-NMB4R7 = "\"C:\\Users\\Admin\\AppData\\Roaming\\windowsfiles\\windowsfiles.exe\"" | C:\Users\Admin\AppData\Local\Temp\70c45fc843dee69c8a55b7910d91d0b4dd371c7ea59d8eb43ff3d79c19064b92.exe | N/A |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\Rmc-NMB4R7 = "\"C:\\Users\\Admin\\AppData\\Roaming\\windowsfiles\\windowsfiles.exe\"" | C:\Users\Admin\AppData\Local\Temp\70c45fc843dee69c8a55b7910d91d0b4dd371c7ea59d8eb43ff3d79c19064b92.exe | N/A |
Suspicious use of SetThreadContext
| Description | Indicator | Process | Target |
| PID 2804 set thread context of 3008 | N/A | C:\Users\Admin\AppData\Local\Temp\70c45fc843dee69c8a55b7910d91d0b4dd371c7ea59d8eb43ff3d79c19064b92.exe | C:\Users\Admin\AppData\Local\Temp\70c45fc843dee69c8a55b7910d91d0b4dd371c7ea59d8eb43ff3d79c19064b92.exe |
| PID 2728 set thread context of 2792 | N/A | C:\Users\Admin\AppData\Roaming\windowsfiles\windowsfiles.exe | C:\Users\Admin\AppData\Roaming\windowsfiles\windowsfiles.exe |
Enumerates physical storage devices
Suspicious use of SetWindowsHookEx
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Roaming\windowsfiles\windowsfiles.exe | N/A |
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\70c45fc843dee69c8a55b7910d91d0b4dd371c7ea59d8eb43ff3d79c19064b92.exe
"C:\Users\Admin\AppData\Local\Temp\70c45fc843dee69c8a55b7910d91d0b4dd371c7ea59d8eb43ff3d79c19064b92.exe"
C:\Users\Admin\AppData\Local\Temp\70c45fc843dee69c8a55b7910d91d0b4dd371c7ea59d8eb43ff3d79c19064b92.exe
"C:\Users\Admin\AppData\Local\Temp\70c45fc843dee69c8a55b7910d91d0b4dd371c7ea59d8eb43ff3d79c19064b92.exe"
C:\Users\Admin\AppData\Roaming\windowsfiles\windowsfiles.exe
"C:\Users\Admin\AppData\Roaming\windowsfiles\windowsfiles.exe"
C:\Users\Admin\AppData\Roaming\windowsfiles\windowsfiles.exe
"C:\Users\Admin\AppData\Roaming\windowsfiles\windowsfiles.exe"
Network
| Country | Destination | Domain | Proto |
| CH | 81.17.17.70:1198 | tcp | |
| CH | 81.17.17.70:1198 | tcp | |
| CH | 81.17.17.70:1198 | tcp | |
| CH | 81.17.17.70:1198 | tcp | |
| CH | 81.17.17.70:1198 | tcp | |
| CH | 81.17.17.70:1198 | tcp | |
| CH | 81.17.17.70:1198 | tcp |
Files
memory/2804-0-0x0000000000B20000-0x0000000000BD6000-memory.dmp
memory/2804-1-0x0000000074010000-0x00000000746FE000-memory.dmp
memory/2804-2-0x0000000000210000-0x0000000000250000-memory.dmp
memory/3008-3-0x0000000000400000-0x0000000000482000-memory.dmp
memory/3008-5-0x0000000000400000-0x0000000000482000-memory.dmp
memory/3008-7-0x0000000000400000-0x0000000000482000-memory.dmp
memory/3008-8-0x0000000000400000-0x0000000000482000-memory.dmp
memory/3008-9-0x0000000000400000-0x0000000000482000-memory.dmp
memory/3008-10-0x0000000000400000-0x0000000000482000-memory.dmp
memory/3008-11-0x0000000000400000-0x0000000000482000-memory.dmp
memory/3008-12-0x0000000000400000-0x0000000000482000-memory.dmp
memory/3008-13-0x000000007EFDE000-0x000000007EFDF000-memory.dmp
memory/3008-15-0x0000000000400000-0x0000000000482000-memory.dmp
memory/2804-17-0x0000000074010000-0x00000000746FE000-memory.dmp
memory/3008-18-0x0000000000400000-0x0000000000482000-memory.dmp
memory/3008-19-0x0000000000400000-0x0000000000482000-memory.dmp
\Users\Admin\AppData\Roaming\windowsfiles\windowsfiles.exe
| MD5 | cfeae297e7b47d957e9e275ede703064 |
| SHA1 | f31ea0ebf131e7186acf028687581318642eff74 |
| SHA256 | 70c45fc843dee69c8a55b7910d91d0b4dd371c7ea59d8eb43ff3d79c19064b92 |
| SHA512 | ebd1a85b790743ee2784a87b0d993151d6c7a53eb1ab5f72cd79d490c56aca511ae369dd04067187ea62bbd3cde803c1bc7b1d628696aff4e3c0ce5e21051e1a |
memory/3008-27-0x0000000000400000-0x0000000000482000-memory.dmp
memory/2728-28-0x0000000072D10000-0x00000000733FE000-memory.dmp
memory/2728-29-0x0000000001180000-0x0000000001236000-memory.dmp
memory/2728-30-0x0000000001110000-0x0000000001150000-memory.dmp
memory/2792-43-0x000000007EFDE000-0x000000007EFDF000-memory.dmp
memory/2728-48-0x0000000072D10000-0x00000000733FE000-memory.dmp
memory/2792-53-0x0000000000090000-0x0000000000112000-memory.dmp
memory/2792-58-0x0000000000090000-0x0000000000112000-memory.dmp
memory/2792-59-0x0000000000090000-0x0000000000112000-memory.dmp
memory/2792-61-0x0000000000090000-0x0000000000112000-memory.dmp
memory/2792-62-0x0000000000090000-0x0000000000112000-memory.dmp
memory/2792-63-0x0000000000090000-0x0000000000112000-memory.dmp
memory/2792-68-0x0000000000090000-0x0000000000112000-memory.dmp
memory/2792-69-0x0000000000090000-0x0000000000112000-memory.dmp
C:\Users\Admin\AppData\Roaming\windowsfiles\logs.dat
| MD5 | 2d680a73a7713c1eae367b35cec8fca6 |
| SHA1 | 6421f75d173fc11737999b6930aafb9df8e3be7d |
| SHA256 | 022c4dc74e98b194815758a3bdf282339a658edfe9ccbede4fe5b14c8127401b |
| SHA512 | f836b6c49ac59c61964c787f77248dd12e63586a949290b9df887e78ae09bd94fb184c6ba1eb3cdad9bafa2f938db83f1ebb74a59a4489c73258d895ab2e6eb5 |
memory/2792-74-0x0000000000090000-0x0000000000112000-memory.dmp
memory/2792-75-0x0000000000090000-0x0000000000112000-memory.dmp
memory/2792-81-0x0000000000090000-0x0000000000112000-memory.dmp
memory/2792-82-0x0000000000090000-0x0000000000112000-memory.dmp
memory/2792-87-0x0000000000090000-0x0000000000112000-memory.dmp
memory/2792-88-0x0000000000090000-0x0000000000112000-memory.dmp
memory/2792-93-0x0000000000090000-0x0000000000112000-memory.dmp
memory/2792-95-0x0000000000090000-0x0000000000112000-memory.dmp
memory/2792-100-0x0000000000090000-0x0000000000112000-memory.dmp
memory/2792-101-0x0000000000090000-0x0000000000112000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2024-04-08 12:17
Reported
2024-04-08 12:19
Platform
win10v2004-20240226-en
Max time kernel
150s
Max time network
149s
Command Line
Signatures
Remcos
Checks computer location settings
| Description | Indicator | Process | Target |
| Key value queried | \REGISTRY\USER\S-1-5-21-1904519900-954640453-4250331663-1000\Control Panel\International\Geo\Nation | C:\Users\Admin\AppData\Local\Temp\70c45fc843dee69c8a55b7910d91d0b4dd371c7ea59d8eb43ff3d79c19064b92.exe | N/A |
Executes dropped EXE
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Roaming\windowsfiles\windowsfiles.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Roaming\windowsfiles\windowsfiles.exe | N/A |
Adds Run key to start application
| Description | Indicator | Process | Target |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\Rmc-NMB4R7 = "\"C:\\Users\\Admin\\AppData\\Roaming\\windowsfiles\\windowsfiles.exe\"" | C:\Users\Admin\AppData\Roaming\windowsfiles\windowsfiles.exe | N/A |
| Set value (str) | \REGISTRY\USER\S-1-5-21-1904519900-954640453-4250331663-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Rmc-NMB4R7 = "\"C:\\Users\\Admin\\AppData\\Roaming\\windowsfiles\\windowsfiles.exe\"" | C:\Users\Admin\AppData\Local\Temp\70c45fc843dee69c8a55b7910d91d0b4dd371c7ea59d8eb43ff3d79c19064b92.exe | N/A |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\Rmc-NMB4R7 = "\"C:\\Users\\Admin\\AppData\\Roaming\\windowsfiles\\windowsfiles.exe\"" | C:\Users\Admin\AppData\Local\Temp\70c45fc843dee69c8a55b7910d91d0b4dd371c7ea59d8eb43ff3d79c19064b92.exe | N/A |
| Set value (str) | \REGISTRY\USER\S-1-5-21-1904519900-954640453-4250331663-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Rmc-NMB4R7 = "\"C:\\Users\\Admin\\AppData\\Roaming\\windowsfiles\\windowsfiles.exe\"" | C:\Users\Admin\AppData\Roaming\windowsfiles\windowsfiles.exe | N/A |
Suspicious use of SetThreadContext
| Description | Indicator | Process | Target |
| PID 1892 set thread context of 2420 | N/A | C:\Users\Admin\AppData\Local\Temp\70c45fc843dee69c8a55b7910d91d0b4dd371c7ea59d8eb43ff3d79c19064b92.exe | C:\Users\Admin\AppData\Local\Temp\70c45fc843dee69c8a55b7910d91d0b4dd371c7ea59d8eb43ff3d79c19064b92.exe |
| PID 4100 set thread context of 2388 | N/A | C:\Users\Admin\AppData\Roaming\windowsfiles\windowsfiles.exe | C:\Users\Admin\AppData\Roaming\windowsfiles\windowsfiles.exe |
Enumerates physical storage devices
Suspicious use of SetWindowsHookEx
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Roaming\windowsfiles\windowsfiles.exe | N/A |
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\70c45fc843dee69c8a55b7910d91d0b4dd371c7ea59d8eb43ff3d79c19064b92.exe
"C:\Users\Admin\AppData\Local\Temp\70c45fc843dee69c8a55b7910d91d0b4dd371c7ea59d8eb43ff3d79c19064b92.exe"
C:\Users\Admin\AppData\Local\Temp\70c45fc843dee69c8a55b7910d91d0b4dd371c7ea59d8eb43ff3d79c19064b92.exe
"C:\Users\Admin\AppData\Local\Temp\70c45fc843dee69c8a55b7910d91d0b4dd371c7ea59d8eb43ff3d79c19064b92.exe"
C:\Users\Admin\AppData\Roaming\windowsfiles\windowsfiles.exe
"C:\Users\Admin\AppData\Roaming\windowsfiles\windowsfiles.exe"
C:\Users\Admin\AppData\Roaming\windowsfiles\windowsfiles.exe
"C:\Users\Admin\AppData\Roaming\windowsfiles\windowsfiles.exe"
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | 196.249.167.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 240.221.184.93.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 2.159.190.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 183.142.211.20.in-addr.arpa | udp |
| CH | 81.17.17.70:1198 | tcp | |
| US | 8.8.8.8:53 | 97.17.167.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 159.113.53.23.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 81.171.91.138.in-addr.arpa | udp |
| CH | 81.17.17.70:1198 | tcp | |
| US | 8.8.8.8:53 | 103.169.127.40.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 15.164.165.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 172.210.232.199.in-addr.arpa | udp |
| CH | 81.17.17.70:1198 | tcp | |
| US | 8.8.8.8:53 | 82.90.14.23.in-addr.arpa | udp |
| CH | 81.17.17.70:1198 | tcp | |
| US | 8.8.8.8:53 | 79.121.231.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 91.90.14.23.in-addr.arpa | udp |
| CH | 81.17.17.70:1198 | tcp | |
| CH | 81.17.17.70:1198 | tcp | |
| CH | 81.17.17.70:1198 | tcp |
Files
memory/1892-0-0x0000000000C00000-0x0000000000CB6000-memory.dmp
memory/1892-1-0x0000000074A80000-0x0000000075230000-memory.dmp
memory/1892-2-0x0000000005B60000-0x0000000006104000-memory.dmp
memory/1892-3-0x00000000055A0000-0x00000000055B0000-memory.dmp
memory/2420-5-0x0000000000400000-0x0000000000482000-memory.dmp
memory/2420-4-0x0000000000400000-0x0000000000482000-memory.dmp
memory/2420-7-0x0000000000400000-0x0000000000482000-memory.dmp
memory/1892-8-0x0000000074A80000-0x0000000075230000-memory.dmp
memory/2420-9-0x0000000000400000-0x0000000000482000-memory.dmp
C:\Users\Admin\AppData\Roaming\windowsfiles\windowsfiles.exe
| MD5 | cfeae297e7b47d957e9e275ede703064 |
| SHA1 | f31ea0ebf131e7186acf028687581318642eff74 |
| SHA256 | 70c45fc843dee69c8a55b7910d91d0b4dd371c7ea59d8eb43ff3d79c19064b92 |
| SHA512 | ebd1a85b790743ee2784a87b0d993151d6c7a53eb1ab5f72cd79d490c56aca511ae369dd04067187ea62bbd3cde803c1bc7b1d628696aff4e3c0ce5e21051e1a |
memory/2420-22-0x0000000000400000-0x0000000000482000-memory.dmp
memory/4100-24-0x0000000073AD0000-0x0000000074280000-memory.dmp
memory/4100-25-0x0000000004E90000-0x0000000004EA0000-memory.dmp
memory/2388-29-0x0000000000400000-0x0000000000482000-memory.dmp
memory/4100-31-0x0000000073AD0000-0x0000000074280000-memory.dmp
memory/2388-30-0x0000000000400000-0x0000000000482000-memory.dmp
memory/2388-32-0x0000000000400000-0x0000000000482000-memory.dmp
memory/2388-34-0x0000000000400000-0x0000000000482000-memory.dmp
memory/2388-35-0x0000000000400000-0x0000000000482000-memory.dmp
memory/2388-36-0x0000000000400000-0x0000000000482000-memory.dmp
memory/2388-41-0x0000000000400000-0x0000000000482000-memory.dmp
memory/2388-42-0x0000000000400000-0x0000000000482000-memory.dmp
C:\Users\Admin\AppData\Roaming\windowsfiles\logs.dat
| MD5 | 955a9a3f3deca5ab7f30db573b67ca5b |
| SHA1 | c067a46b0d4a6f959ae53b7c451d30d193f6446b |
| SHA256 | e348fca04d9d0e306c7b340ca1e35158ec78fccd495d000ad4a059735842c82a |
| SHA512 | b130648ac7d36f9e235bb53ccb226060c4267659120c0a38df66c2b81b576767e20c219c5d9efa94945f9166893dbf46543fdcf94ee862bcc75605e788f7523b |
memory/2388-47-0x0000000000400000-0x0000000000482000-memory.dmp
memory/2388-48-0x0000000000400000-0x0000000000482000-memory.dmp
memory/2388-54-0x0000000000400000-0x0000000000482000-memory.dmp
memory/2388-55-0x0000000000400000-0x0000000000482000-memory.dmp
memory/2388-60-0x0000000000400000-0x0000000000482000-memory.dmp
memory/2388-61-0x0000000000400000-0x0000000000482000-memory.dmp
memory/2388-66-0x0000000000400000-0x0000000000482000-memory.dmp
memory/2388-68-0x0000000000400000-0x0000000000482000-memory.dmp
memory/2388-73-0x0000000000400000-0x0000000000482000-memory.dmp
memory/2388-74-0x0000000000400000-0x0000000000482000-memory.dmp