Analysis Overview
SHA256
da823b302bfe968cb38012247306efe78d3de49dfd2e46988222edd92bae4599
Threat Level: Known bad
The file XClient.exe was found to be: Known bad.
Malicious Activity Summary
Detect Xworm Payload
Xworm
Xworm family
Drops startup file
Checks computer location settings
Executes dropped EXE
Adds Run key to start application
Looks up external IP address via web service
Unsigned PE
Enumerates physical storage devices
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of SetWindowsHookEx
Scheduled Task/Job: Scheduled Task
Uses Task Scheduler COM API
Suspicious use of WriteProcessMemory
MITRE ATT&CK
Enterprise Matrix V15
Analysis: static1
Detonation Overview
Reported
2024-06-21 23:05
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 23:05
Reported
2024-06-21 23:08
Platform
win7-20231129-en
Max time kernel
146s
Max time network
149s
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 |
| N/A | N/A | N/A | N/A |
| 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\svchost.lnk | C:\Users\Admin\AppData\Local\Temp\XClient.exe | N/A |
| File opened for modification | C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\svchost.lnk | C:\Users\Admin\AppData\Local\Temp\XClient.exe | N/A |
Executes dropped EXE
| Description | Indicator | Process | Target |
| N/A | N/A | C:\ProgramData\svchost | N/A |
| N/A | N/A | C:\ProgramData\svchost | N/A |
| N/A | N/A | C:\ProgramData\svchost | N/A |
Adds Run key to start application
| Description | Indicator | Process | Target |
| Set value (str) | \REGISTRY\USER\S-1-5-21-3627615824-4061627003-3019543961-1000\Software\Microsoft\Windows\CurrentVersion\Run\svchost = "C:\\ProgramData\\svchost" | C:\Users\Admin\AppData\Local\Temp\XClient.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
Scheduled Task/Job: Scheduled Task
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\System32\schtasks.exe | N/A |
Suspicious behavior: EnumeratesProcesses
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\XClient.exe | N/A |
Suspicious use of AdjustPrivilegeToken
| Description | Indicator | Process | Target |
| Token: SeDebugPrivilege | N/A | C:\Users\Admin\AppData\Local\Temp\XClient.exe | N/A |
| Token: SeDebugPrivilege | N/A | C:\Users\Admin\AppData\Local\Temp\XClient.exe | N/A |
| Token: SeDebugPrivilege | N/A | C:\ProgramData\svchost | N/A |
| Token: SeDebugPrivilege | N/A | C:\ProgramData\svchost | N/A |
| Token: SeDebugPrivilege | N/A | C:\ProgramData\svchost | N/A |
Suspicious use of SetWindowsHookEx
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\XClient.exe | N/A |
Suspicious use of WriteProcessMemory
Uses Task Scheduler COM API
Processes
C:\Users\Admin\AppData\Local\Temp\XClient.exe
"C:\Users\Admin\AppData\Local\Temp\XClient.exe"
C:\Windows\System32\schtasks.exe
"C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "svchost" /tr "C:\ProgramData\svchost"
C:\Windows\system32\taskeng.exe
taskeng.exe {8BBA8C58-6A21-4C06-AA1D-007FCF317FAC} S-1-5-21-3627615824-4061627003-3019543961-1000:SCFGBRBT\Admin:Interactive:[1]
C:\ProgramData\svchost
C:\ProgramData\svchost
C:\ProgramData\svchost
C:\ProgramData\svchost
C:\ProgramData\svchost
C:\ProgramData\svchost
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 |
| US | 8.8.8.8:53 | runderscore00-25851.portmap.host | udp |
| DE | 193.161.193.99:25851 | runderscore00-25851.portmap.host | tcp |
| DE | 193.161.193.99:25851 | runderscore00-25851.portmap.host | tcp |
| DE | 193.161.193.99:25851 | runderscore00-25851.portmap.host | tcp |
| DE | 193.161.193.99:25851 | runderscore00-25851.portmap.host | tcp |
| DE | 193.161.193.99:25851 | runderscore00-25851.portmap.host | tcp |
| DE | 193.161.193.99:25851 | runderscore00-25851.portmap.host | tcp |
| DE | 193.161.193.99:25851 | runderscore00-25851.portmap.host | tcp |
| DE | 193.161.193.99:25851 | runderscore00-25851.portmap.host | tcp |
| DE | 193.161.193.99:25851 | runderscore00-25851.portmap.host | tcp |
| DE | 193.161.193.99:25851 | runderscore00-25851.portmap.host | tcp |
| DE | 193.161.193.99:25851 | runderscore00-25851.portmap.host | tcp |
| DE | 193.161.193.99:25851 | runderscore00-25851.portmap.host | tcp |
| DE | 193.161.193.99:25851 | runderscore00-25851.portmap.host | tcp |
| DE | 193.161.193.99:25851 | runderscore00-25851.portmap.host | tcp |
| DE | 193.161.193.99:25851 | runderscore00-25851.portmap.host | tcp |
| DE | 193.161.193.99:25851 | runderscore00-25851.portmap.host | tcp |
| DE | 193.161.193.99:25851 | runderscore00-25851.portmap.host | tcp |
| DE | 193.161.193.99:25851 | runderscore00-25851.portmap.host | tcp |
Files
memory/2168-0-0x000007FEF5A83000-0x000007FEF5A84000-memory.dmp
memory/2168-1-0x0000000000320000-0x0000000000338000-memory.dmp
memory/2168-2-0x000007FEF5A80000-0x000007FEF646C000-memory.dmp
C:\ProgramData\svchost
| MD5 | b82626cc0347f048f8da43fb67033b74 |
| SHA1 | 2a5ea2cc17682a0750b4d9f9ab84c53e20ab49c9 |
| SHA256 | da823b302bfe968cb38012247306efe78d3de49dfd2e46988222edd92bae4599 |
| SHA512 | 434d1d159ef525ca5fce31d88499cce87e1d9620c906f465e245a711a6f44b6c85838d87d4c76f4efd2ae4364be3fdbb51e4e262dd3eab12b7ac0c528b8d123a |
memory/2620-9-0x0000000000A70000-0x0000000000A88000-memory.dmp
memory/2168-10-0x000007FEF5A83000-0x000007FEF5A84000-memory.dmp
memory/2168-11-0x000007FEF5A80000-0x000007FEF646C000-memory.dmp
memory/2000-14-0x0000000001170000-0x0000000001188000-memory.dmp
memory/764-16-0x00000000002A0000-0x00000000002B8000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2024-06-21 23:05
Reported
2024-06-21 23:08
Platform
win10v2004-20240611-en
Max time kernel
142s
Max time network
149s
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
Checks computer location settings
| Description | Indicator | Process | Target |
| Key value queried | \REGISTRY\USER\S-1-5-21-2447855248-390457009-3660902674-1000\Control Panel\International\Geo\Nation | C:\Users\Admin\AppData\Local\Temp\XClient.exe | N/A |
Drops startup file
| Description | Indicator | Process | Target |
| File created | C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\svchost.lnk | C:\Users\Admin\AppData\Local\Temp\XClient.exe | N/A |
| File opened for modification | C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\svchost.lnk | C:\Users\Admin\AppData\Local\Temp\XClient.exe | N/A |
Executes dropped EXE
| Description | Indicator | Process | Target |
| N/A | N/A | C:\ProgramData\svchost | N/A |
| N/A | N/A | C:\ProgramData\svchost | N/A |
| N/A | N/A | C:\ProgramData\svchost | N/A |
Adds Run key to start application
| Description | Indicator | Process | Target |
| Set value (str) | \REGISTRY\USER\S-1-5-21-2447855248-390457009-3660902674-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\svchost = "C:\\ProgramData\\svchost" | C:\Users\Admin\AppData\Local\Temp\XClient.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
Scheduled Task/Job: Scheduled Task
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\System32\schtasks.exe | N/A |
Suspicious behavior: EnumeratesProcesses
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\XClient.exe | N/A |
Suspicious use of AdjustPrivilegeToken
| Description | Indicator | Process | Target |
| Token: SeDebugPrivilege | N/A | C:\Users\Admin\AppData\Local\Temp\XClient.exe | N/A |
| Token: SeDebugPrivilege | N/A | C:\Users\Admin\AppData\Local\Temp\XClient.exe | N/A |
| Token: SeDebugPrivilege | N/A | C:\ProgramData\svchost | N/A |
| Token: SeDebugPrivilege | N/A | C:\ProgramData\svchost | N/A |
| Token: SeDebugPrivilege | N/A | C:\ProgramData\svchost | N/A |
Suspicious use of SetWindowsHookEx
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\XClient.exe | N/A |
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 1628 wrote to memory of 1924 | N/A | C:\Users\Admin\AppData\Local\Temp\XClient.exe | C:\Windows\System32\schtasks.exe |
| PID 1628 wrote to memory of 1924 | N/A | C:\Users\Admin\AppData\Local\Temp\XClient.exe | C:\Windows\System32\schtasks.exe |
Uses Task Scheduler COM API
Processes
C:\Users\Admin\AppData\Local\Temp\XClient.exe
"C:\Users\Admin\AppData\Local\Temp\XClient.exe"
C:\Windows\System32\schtasks.exe
"C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "svchost" /tr "C:\ProgramData\svchost"
C:\ProgramData\svchost
C:\ProgramData\svchost
C:\ProgramData\svchost
C:\ProgramData\svchost
C:\ProgramData\svchost
C:\ProgramData\svchost
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | 209.205.72.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 172.210.232.199.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 4.159.190.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 57.169.31.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | ip-api.com | udp |
| US | 208.95.112.1:80 | ip-api.com | tcp |
| US | 8.8.8.8:53 | 1.112.95.208.in-addr.arpa | udp |
| US | 8.8.8.8:53 | runderscore00-25851.portmap.host | udp |
| DE | 193.161.193.99:25851 | runderscore00-25851.portmap.host | tcp |
| US | 8.8.8.8:53 | 149.220.183.52.in-addr.arpa | udp |
| DE | 193.161.193.99:25851 | runderscore00-25851.portmap.host | tcp |
| DE | 193.161.193.99:25851 | runderscore00-25851.portmap.host | tcp |
| US | 8.8.8.8:53 | 50.23.12.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 15.164.165.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 57.15.31.184.in-addr.arpa | udp |
| DE | 193.161.193.99:25851 | runderscore00-25851.portmap.host | tcp |
| DE | 193.161.193.99:25851 | runderscore00-25851.portmap.host | tcp |
| DE | 193.161.193.99:25851 | runderscore00-25851.portmap.host | tcp |
| US | 8.8.8.8:53 | 55.36.223.20.in-addr.arpa | udp |
| DE | 193.161.193.99:25851 | runderscore00-25851.portmap.host | tcp |
| DE | 193.161.193.99:25851 | runderscore00-25851.portmap.host | tcp |
| DE | 193.161.193.99:25851 | runderscore00-25851.portmap.host | tcp |
| DE | 193.161.193.99:25851 | runderscore00-25851.portmap.host | tcp |
| US | 8.8.8.8:53 | 21.236.111.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | tse1.mm.bing.net | udp |
| US | 150.171.27.10:443 | tse1.mm.bing.net | tcp |
| US | 150.171.27.10:443 | tse1.mm.bing.net | tcp |
| US | 8.8.8.8:53 | 26.35.223.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 10.27.171.150.in-addr.arpa | udp |
| DE | 193.161.193.99:25851 | runderscore00-25851.portmap.host | tcp |
| DE | 193.161.193.99:25851 | runderscore00-25851.portmap.host | tcp |
| DE | 193.161.193.99:25851 | runderscore00-25851.portmap.host | tcp |
| DE | 193.161.193.99:25851 | runderscore00-25851.portmap.host | tcp |
| DE | 193.161.193.99:25851 | runderscore00-25851.portmap.host | tcp |
Files
memory/1628-0-0x00007FFB0C4F3000-0x00007FFB0C4F5000-memory.dmp
memory/1628-1-0x0000000000CB0000-0x0000000000CC8000-memory.dmp
memory/1628-2-0x00007FFB0C4F0000-0x00007FFB0CFB1000-memory.dmp
C:\ProgramData\svchost
| MD5 | b82626cc0347f048f8da43fb67033b74 |
| SHA1 | 2a5ea2cc17682a0750b4d9f9ab84c53e20ab49c9 |
| SHA256 | da823b302bfe968cb38012247306efe78d3de49dfd2e46988222edd92bae4599 |
| SHA512 | 434d1d159ef525ca5fce31d88499cce87e1d9620c906f465e245a711a6f44b6c85838d87d4c76f4efd2ae4364be3fdbb51e4e262dd3eab12b7ac0c528b8d123a |
memory/1628-8-0x00007FFB0C4F3000-0x00007FFB0C4F5000-memory.dmp
memory/4260-9-0x00007FFB0C4F0000-0x00007FFB0CFB1000-memory.dmp
memory/4260-11-0x00007FFB0C4F0000-0x00007FFB0CFB1000-memory.dmp
memory/1628-12-0x00007FFB0C4F0000-0x00007FFB0CFB1000-memory.dmp
C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\svchost.log
| MD5 | 2ff39f6c7249774be85fd60a8f9a245e |
| SHA1 | 684ff36b31aedc1e587c8496c02722c6698c1c4e |
| SHA256 | e1b91642d85d98124a6a31f710e137ab7fd90dec30e74a05ab7fcf3b7887dced |
| SHA512 | 1d7e8b92ef4afd463d62cfa7e8b9d1799db5bf2a263d3cd7840df2e0a1323d24eb595b5f8eb615c6cb15f9e3a7b4fc99f8dd6a3d34479222e966ec708998aed1 |