Analysis Overview
SHA256
0d9fb244ea506b9994b55ca4fcf970cda40af79c08ea8f7bd1e34ce2c283cfd0
Threat Level: Known bad
The file e62f3a9fcde2987b30418db6aee857db_JaffaCakes118 was found to be: Known bad.
Malicious Activity Summary
Remcos
Executes dropped EXE
Deletes itself
Loads dropped DLL
Adds Run key to start application
Suspicious use of SetThreadContext
Unsigned PE
Enumerates physical storage devices
Program crash
Suspicious behavior: MapViewOfSection
Suspicious use of SendNotifyMessage
Suspicious use of WriteProcessMemory
Suspicious use of FindShellTrayWindow
MITRE ATT&CK
Enterprise Matrix V15
Analysis: static1
Detonation Overview
Reported
2024-04-08 00:10
Signatures
Unsigned PE
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Analysis: behavioral1
Detonation Overview
Submitted
2024-04-08 00:10
Reported
2024-04-08 00:13
Platform
win7-20240221-en
Max time kernel
148s
Max time network
150s
Command Line
Signatures
Remcos
Deletes itself
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\WScript.exe | N/A |
Executes dropped EXE
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Roaming\Remcos\remcos.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Roaming\Remcos\remcos.exe | N/A |
Loads dropped DLL
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\cmd.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Roaming\Remcos\remcos.exe | N/A |
Adds Run key to start application
| Description | Indicator | Process | Target |
| Set value (str) | \REGISTRY\USER\S-1-5-21-330940541-141609230-1670313778-1000\Software\Microsoft\Windows\CurrentVersion\Run\Remcos = "\"C:\\Users\\Admin\\AppData\\Roaming\\Remcos\\remcos.exe\"" | C:\Users\Admin\AppData\Local\Temp\e62f3a9fcde2987b30418db6aee857db_JaffaCakes118.exe | N/A |
| Set value (str) | \REGISTRY\USER\S-1-5-21-330940541-141609230-1670313778-1000\Software\Microsoft\Windows\CurrentVersion\Run\Remcos = "\"C:\\Users\\Admin\\AppData\\Roaming\\Remcos\\remcos.exe\"" | C:\Users\Admin\AppData\Roaming\Remcos\remcos.exe | N/A |
Suspicious use of SetThreadContext
| Description | Indicator | Process | Target |
| PID 2244 set thread context of 2364 | N/A | C:\Users\Admin\AppData\Local\Temp\e62f3a9fcde2987b30418db6aee857db_JaffaCakes118.exe | C:\Users\Admin\AppData\Local\Temp\e62f3a9fcde2987b30418db6aee857db_JaffaCakes118.exe |
| PID 2548 set thread context of 2556 | N/A | C:\Users\Admin\AppData\Roaming\Remcos\remcos.exe | C:\Users\Admin\AppData\Roaming\Remcos\remcos.exe |
Enumerates physical storage devices
Suspicious behavior: MapViewOfSection
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\e62f3a9fcde2987b30418db6aee857db_JaffaCakes118.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Roaming\Remcos\remcos.exe | N/A |
Suspicious use of FindShellTrayWindow
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Roaming\Remcos\remcos.exe | N/A |
Suspicious use of SendNotifyMessage
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Roaming\Remcos\remcos.exe | N/A |
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\e62f3a9fcde2987b30418db6aee857db_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\e62f3a9fcde2987b30418db6aee857db_JaffaCakes118.exe"
C:\Users\Admin\AppData\Local\Temp\e62f3a9fcde2987b30418db6aee857db_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\e62f3a9fcde2987b30418db6aee857db_JaffaCakes118.exe"
C:\Windows\SysWOW64\WScript.exe
"C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\install.vbs"
C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /c "C:\Users\Admin\AppData\Roaming\Remcos\remcos.exe"
C:\Users\Admin\AppData\Roaming\Remcos\remcos.exe
C:\Users\Admin\AppData\Roaming\Remcos\remcos.exe
C:\Users\Admin\AppData\Roaming\Remcos\remcos.exe
C:\Users\Admin\AppData\Roaming\Remcos\remcos.exe
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | namsgee.duckdns.org | udp |
| US | 23.29.115.152:7642 | namsgee.duckdns.org | tcp |
| US | 23.29.115.152:7642 | namsgee.duckdns.org | tcp |
| US | 23.29.115.152:7642 | namsgee.duckdns.org | tcp |
| US | 8.8.8.8:53 | namsgee.duckdns.org | udp |
| US | 23.29.115.152:7642 | namsgee.duckdns.org | tcp |
| US | 23.29.115.152:7642 | namsgee.duckdns.org | tcp |
| US | 23.29.115.152:7642 | namsgee.duckdns.org | tcp |
| US | 8.8.8.8:53 | namsgee.duckdns.org | udp |
| US | 23.29.115.152:7642 | namsgee.duckdns.org | tcp |
Files
memory/2244-0-0x0000000000400000-0x0000000000440000-memory.dmp
memory/2244-1-0x00000000001C0000-0x00000000001C2000-memory.dmp
memory/2364-2-0x0000000000400000-0x0000000000479000-memory.dmp
memory/2244-3-0x0000000000400000-0x0000000000440000-memory.dmp
memory/2364-5-0x0000000000400000-0x0000000000479000-memory.dmp
memory/2364-8-0x0000000000400000-0x0000000000479000-memory.dmp
memory/2364-11-0x0000000000400000-0x0000000000479000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\install.vbs
| MD5 | b4796b900df5f5855f2b96402a3d2bc3 |
| SHA1 | d716fddefa4d60e58c510e8549d738c383644a55 |
| SHA256 | c686122edf277747c204a59804bb847849f6351f150daa7d71db089b1a7472e2 |
| SHA512 | 1c3e858bd278e99e0d6fed5a4312daf72d023ac887332243f5bc1ba6d92b4fbc69a9b48f661e56bcb38dca3ee2d39d9aefe1e25d132b404d1a94639270d66d0e |
\Users\Admin\AppData\Roaming\Remcos\remcos.exe
| MD5 | e62f3a9fcde2987b30418db6aee857db |
| SHA1 | 2e7278a0538398e3d1c7d4291595732b4c9579c2 |
| SHA256 | 0d9fb244ea506b9994b55ca4fcf970cda40af79c08ea8f7bd1e34ce2c283cfd0 |
| SHA512 | 838809fac6bb7826190754f65f90abe6c9191cb5628d25650f4c6ead9a7598ca2fa565fbacc33d1ce11e8a2149699f35489a0ef3b58da7f0a92da843ddd78918 |
memory/2548-17-0x0000000000400000-0x0000000000440000-memory.dmp
memory/2548-22-0x0000000000400000-0x0000000000440000-memory.dmp
memory/2556-23-0x0000000000400000-0x0000000000479000-memory.dmp
memory/2556-24-0x0000000000400000-0x0000000000479000-memory.dmp
memory/2556-26-0x0000000000400000-0x0000000000479000-memory.dmp
memory/2556-25-0x0000000000400000-0x0000000000479000-memory.dmp
memory/2556-27-0x0000000000400000-0x0000000000479000-memory.dmp
memory/2556-29-0x0000000000400000-0x0000000000479000-memory.dmp
memory/2556-31-0x0000000000400000-0x0000000000479000-memory.dmp
memory/2556-33-0x0000000000400000-0x0000000000479000-memory.dmp
memory/2556-35-0x0000000000400000-0x0000000000479000-memory.dmp
memory/2556-38-0x0000000000400000-0x0000000000479000-memory.dmp
memory/2556-40-0x0000000000400000-0x0000000000479000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2024-04-08 00:10
Reported
2024-04-08 00:13
Platform
win10v2004-20240226-en
Max time kernel
149s
Max time network
150s
Command Line
Signatures
Program crash
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\WerFault.exe | C:\Users\Admin\AppData\Local\Temp\e62f3a9fcde2987b30418db6aee857db_JaffaCakes118.exe |
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 640 wrote to memory of 4964 | N/A | C:\Users\Admin\AppData\Local\Temp\e62f3a9fcde2987b30418db6aee857db_JaffaCakes118.exe | C:\Users\Admin\AppData\Local\Temp\e62f3a9fcde2987b30418db6aee857db_JaffaCakes118.exe |
| PID 640 wrote to memory of 4964 | N/A | C:\Users\Admin\AppData\Local\Temp\e62f3a9fcde2987b30418db6aee857db_JaffaCakes118.exe | C:\Users\Admin\AppData\Local\Temp\e62f3a9fcde2987b30418db6aee857db_JaffaCakes118.exe |
| PID 640 wrote to memory of 4964 | N/A | C:\Users\Admin\AppData\Local\Temp\e62f3a9fcde2987b30418db6aee857db_JaffaCakes118.exe | C:\Users\Admin\AppData\Local\Temp\e62f3a9fcde2987b30418db6aee857db_JaffaCakes118.exe |
Processes
C:\Users\Admin\AppData\Local\Temp\e62f3a9fcde2987b30418db6aee857db_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\e62f3a9fcde2987b30418db6aee857db_JaffaCakes118.exe"
C:\Users\Admin\AppData\Local\Temp\e62f3a9fcde2987b30418db6aee857db_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\e62f3a9fcde2987b30418db6aee857db_JaffaCakes118.exe"
C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 184 -p 640 -ip 640
C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 640 -s 292
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | 228.249.119.40.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 4.159.190.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 86.23.85.13.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 15.164.165.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 121.118.77.104.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 240.197.17.2.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 249.197.17.2.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 30.243.111.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | udp |
Files
memory/640-1-0x0000000000600000-0x0000000000602000-memory.dmp
memory/640-0-0x0000000000400000-0x0000000000440000-memory.dmp