Analysis Overview
SHA256
39ca4ba8dd7b0324302767752719eb5198b5cc52dcb14d05a3dbd0756fc543f9
Threat Level: Known bad
The file portmap.exe was found to be: Known bad.
Malicious Activity Summary
Detect Xworm Payload
Xworm
Xworm family
Drops startup file
Executes dropped EXE
Looks up external IP address via web service
Adds Run key to start application
Unsigned PE
Enumerates physical storage devices
Suspicious use of WriteProcessMemory
Uses Task Scheduler COM API
Suspicious use of AdjustPrivilegeToken
Delays execution with timeout.exe
Scheduled Task/Job: Scheduled Task
MITRE ATT&CK
Enterprise Matrix V15
Analysis: static1
Detonation Overview
Reported
2024-06-21 17:49
Signatures
Detect Xworm Payload
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Xworm family
Unsigned PE
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Analysis: behavioral1
Detonation Overview
Submitted
2024-06-21 17:49
Reported
2024-06-21 18:09
Platform
win11-20240508-en
Max time kernel
453s
Max time network
1172s
Command Line
Signatures
Detect Xworm Payload
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
Xworm
Drops startup file
| Description | Indicator | Process | Target |
| File created | C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Windows backup.lnk | C:\Users\Admin\AppData\Local\Temp\portmap.exe | N/A |
| File opened for modification | C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Windows backup.lnk | C:\Users\Admin\AppData\Local\Temp\portmap.exe | N/A |
Executes dropped EXE
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\Windows backup | N/A |
Adds Run key to start application
| Description | Indicator | Process | Target |
| Set value (str) | \REGISTRY\USER\S-1-5-21-3433428765-2473475212-4279855560-1000\Software\Microsoft\Windows\CurrentVersion\Run\Windows backup = "C:\\Users\\Admin\\Windows backup" | C:\Users\Admin\AppData\Local\Temp\portmap.exe | N/A |
Looks up external IP address via web service
| Description | Indicator | Process | Target |
| N/A | ip-api.com | N/A | N/A |
Enumerates physical storage devices
Delays execution with timeout.exe
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\system32\timeout.exe | N/A |
Scheduled Task/Job: Scheduled Task
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\System32\schtasks.exe | N/A |
Suspicious use of AdjustPrivilegeToken
| Description | Indicator | Process | Target |
| Token: SeDebugPrivilege | N/A | C:\Users\Admin\AppData\Local\Temp\portmap.exe | N/A |
| Token: SeDebugPrivilege | N/A | C:\Users\Admin\AppData\Local\Temp\portmap.exe | N/A |
| Token: SeDebugPrivilege | N/A | C:\Users\Admin\Windows backup | N/A |
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 4840 wrote to memory of 2440 | N/A | C:\Users\Admin\AppData\Local\Temp\portmap.exe | C:\Windows\System32\schtasks.exe |
| PID 4840 wrote to memory of 2440 | N/A | C:\Users\Admin\AppData\Local\Temp\portmap.exe | C:\Windows\System32\schtasks.exe |
| PID 4840 wrote to memory of 1188 | N/A | C:\Users\Admin\AppData\Local\Temp\portmap.exe | C:\Windows\System32\schtasks.exe |
| PID 4840 wrote to memory of 1188 | N/A | C:\Users\Admin\AppData\Local\Temp\portmap.exe | C:\Windows\System32\schtasks.exe |
| PID 4840 wrote to memory of 2940 | N/A | C:\Users\Admin\AppData\Local\Temp\portmap.exe | C:\Windows\system32\cmd.exe |
| PID 4840 wrote to memory of 2940 | N/A | C:\Users\Admin\AppData\Local\Temp\portmap.exe | C:\Windows\system32\cmd.exe |
| PID 2940 wrote to memory of 2836 | N/A | C:\Windows\system32\cmd.exe | C:\Windows\system32\timeout.exe |
| PID 2940 wrote to memory of 2836 | N/A | C:\Windows\system32\cmd.exe | C:\Windows\system32\timeout.exe |
Uses Task Scheduler COM API
Processes
C:\Users\Admin\AppData\Local\Temp\portmap.exe
"C:\Users\Admin\AppData\Local\Temp\portmap.exe"
C:\Windows\System32\schtasks.exe
"C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "Windows backup" /tr "C:\Users\Admin\Windows backup"
C:\Users\Admin\Windows backup
"C:\Users\Admin\Windows backup"
C:\Windows\System32\schtasks.exe
"C:\Windows\System32\schtasks.exe" /delete /f /tn "Windows backup"
C:\Windows\system32\cmd.exe
C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmpAF5A.tmp.bat""
C:\Windows\system32\timeout.exe
timeout 3
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | ip-api.com | udp |
| US | 208.95.112.1:80 | ip-api.com | tcp |
| DE | 193.161.193.99:53065 | Jamalhacker-53065.portmap.io | tcp |
| DE | 193.161.193.99:53065 | Jamalhacker-53065.portmap.io | tcp |
Files
memory/4840-0-0x00007FFB728F3000-0x00007FFB728F5000-memory.dmp
memory/4840-1-0x00000000003C0000-0x00000000003D0000-memory.dmp
memory/4840-2-0x00007FFB728F0000-0x00007FFB733B2000-memory.dmp
C:\Users\Admin\Windows backup
| MD5 | 65bdfee5e4d9099b10d35fd68a9b44cb |
| SHA1 | 20f380d3064186587069464becedadae24ad305a |
| SHA256 | 39ca4ba8dd7b0324302767752719eb5198b5cc52dcb14d05a3dbd0756fc543f9 |
| SHA512 | 69350a193ab4c9d2ba6629f2265fff4f3e21e074ec3b02b5a972c9af21724af12aad669834677c7b9ae6d4c96a74044f04e95570643393cda80130febbc09186 |
memory/1516-8-0x00007FFB728F0000-0x00007FFB733B2000-memory.dmp
memory/1516-10-0x00007FFB728F0000-0x00007FFB733B2000-memory.dmp
memory/4840-11-0x000000001C160000-0x000000001C16C000-memory.dmp
memory/4840-12-0x00007FFB728F3000-0x00007FFB728F5000-memory.dmp
memory/4840-18-0x00007FFB728F0000-0x00007FFB733B2000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\tmpAF5A.tmp.bat
| MD5 | d869ea8606472ff08137ad940a234bbc |
| SHA1 | 6c02da5e608465ed5015a84cb9f6bef45df6f5f0 |
| SHA256 | ca587e9b3bea722e3f839b691f8f3dd817fc59f450aaf1af73097f2b09c4a66c |
| SHA512 | 806110fbb79b5d762cc2e740e16ca56ba5fcca58760d2bd084a4c598c59f2176308e4f173853deacad232b2c6aa6db528c2f32e957eb9169d6512bf7cd7011a4 |