Analysis Overview
SHA256
39140afbfa30b4817ff4c5e60bbaac3e87e68cf432bc52aa12f7af8c610bf721
Threat Level: Known bad
The file XClient.exe was found to be: Known bad.
Malicious Activity Summary
Xworm
Xworm family
Detect Xworm Payload
Checks computer location settings
Drops startup file
Executes dropped EXE
Looks up external IP address via web service
Adds Run key to start application
Enumerates physical storage devices
Unsigned PE
Creates scheduled task(s)
Uses Task Scheduler COM API
Suspicious use of WriteProcessMemory
Suspicious use of AdjustPrivilegeToken
Suspicious use of SetWindowsHookEx
Suspicious behavior: EnumeratesProcesses
MITRE ATT&CK
Enterprise Matrix V15
Analysis: static1
Detonation Overview
Reported
2024-05-31 16:45
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: behavioral2
Detonation Overview
Submitted
2024-05-31 16:45
Reported
2024-05-31 16:48
Platform
win10v2004-20240426-en
Max time kernel
149s
Max time network
150s
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-1-5-21-3906287020-2915474608-1755617787-1000\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\$77client.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\$77client.lnk | C:\Users\Admin\AppData\Local\Temp\XClient.exe | N/A |
Executes dropped EXE
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Roaming\$77client.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Roaming\$77client.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Roaming\$77client.exe | N/A |
Adds Run key to start application
| Description | Indicator | Process | Target |
| Set value (str) | \REGISTRY\USER\S-1-5-21-3906287020-2915474608-1755617787-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\$77client = "C:\\Users\\Admin\\AppData\\Roaming\\$77client.exe" | 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
Creates scheduled task(s)
| 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:\Users\Admin\AppData\Roaming\$77client.exe | N/A |
| Token: SeDebugPrivilege | N/A | C:\Users\Admin\AppData\Roaming\$77client.exe | N/A |
| Token: SeDebugPrivilege | N/A | C:\Users\Admin\AppData\Roaming\$77client.exe | 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 2272 wrote to memory of 1220 | N/A | C:\Users\Admin\AppData\Local\Temp\XClient.exe | C:\Windows\System32\schtasks.exe |
| PID 2272 wrote to memory of 1220 | 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 "$77client" /tr "C:\Users\Admin\AppData\Roaming\$77client.exe"
C:\Users\Admin\AppData\Roaming\$77client.exe
C:\Users\Admin\AppData\Roaming\$77client.exe
C:\Users\Admin\AppData\Roaming\$77client.exe
C:\Users\Admin\AppData\Roaming\$77client.exe
C:\Users\Admin\AppData\Roaming\$77client.exe
C:\Users\Admin\AppData\Roaming\$77client.exe
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | 8.8.8.8.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 241.150.49.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 82.90.14.23.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 71.31.126.40.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 95.221.229.192.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 | panel-slave.gl.at.ply.gg | udp |
| US | 147.185.221.19:27892 | panel-slave.gl.at.ply.gg | tcp |
| US | 8.8.8.8:53 | 104.219.191.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 196.249.167.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 183.59.114.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 171.39.242.20.in-addr.arpa | udp |
| US | 147.185.221.19:27892 | panel-slave.gl.at.ply.gg | tcp |
| US | 8.8.8.8:53 | 91.90.14.23.in-addr.arpa | udp |
| US | 147.185.221.19:27892 | panel-slave.gl.at.ply.gg | tcp |
| US | 147.185.221.19:27892 | panel-slave.gl.at.ply.gg | tcp |
| US | 8.8.8.8:53 | 11.227.111.52.in-addr.arpa | udp |
| US | 147.185.221.19:27892 | panel-slave.gl.at.ply.gg | tcp |
| US | 147.185.221.19:27892 | panel-slave.gl.at.ply.gg | tcp |
Files
memory/2272-0-0x00007FFCDBF83000-0x00007FFCDBF85000-memory.dmp
memory/2272-1-0x0000000000750000-0x0000000000760000-memory.dmp
memory/2272-2-0x00007FFCDBF80000-0x00007FFCDCA41000-memory.dmp
memory/2272-7-0x00007FFCDBF83000-0x00007FFCDBF85000-memory.dmp
memory/2272-8-0x00007FFCDBF80000-0x00007FFCDCA41000-memory.dmp
C:\Users\Admin\AppData\Roaming\$77client.exe
| MD5 | daa12fe7204ec7192ef9b295a1775e1a |
| SHA1 | b9627cbdea6c2317ee58a0020f3ad2e217d63ada |
| SHA256 | 39140afbfa30b4817ff4c5e60bbaac3e87e68cf432bc52aa12f7af8c610bf721 |
| SHA512 | f16e3967a6ac2db9193e234c9129115921afab8b7160a7f59cf8d88511485f49e211a7201e620a43df1764658f6c4e8733180fd94bea15a3539451baec1fd67c |
memory/3016-11-0x00007FFCDBF80000-0x00007FFCDCA41000-memory.dmp
memory/3016-13-0x00007FFCDBF80000-0x00007FFCDCA41000-memory.dmp
C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\$77client.exe.log
| MD5 | 2ff39f6c7249774be85fd60a8f9a245e |
| SHA1 | 684ff36b31aedc1e587c8496c02722c6698c1c4e |
| SHA256 | e1b91642d85d98124a6a31f710e137ab7fd90dec30e74a05ab7fcf3b7887dced |
| SHA512 | 1d7e8b92ef4afd463d62cfa7e8b9d1799db5bf2a263d3cd7840df2e0a1323d24eb595b5f8eb615c6cb15f9e3a7b4fc99f8dd6a3d34479222e966ec708998aed1 |
Analysis: behavioral1
Detonation Overview
Submitted
2024-05-31 16:45
Reported
2024-05-31 16:48
Platform
win7-20240221-en
Max time kernel
149s
Max time network
132s
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 |
Xworm
Drops startup file
| Description | Indicator | Process | Target |
| File created | C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\$77client.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\$77client.lnk | C:\Users\Admin\AppData\Local\Temp\XClient.exe | N/A |
Executes dropped EXE
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Roaming\$77client.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Roaming\$77client.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Roaming\$77client.exe | N/A |
Adds Run key to start application
| Description | Indicator | Process | Target |
| Set value (str) | \REGISTRY\USER\S-1-5-21-1298544033-3225604241-2703760938-1000\Software\Microsoft\Windows\CurrentVersion\Run\$77client = "C:\\Users\\Admin\\AppData\\Roaming\\$77client.exe" | 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
Creates scheduled task(s)
| 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:\Users\Admin\AppData\Roaming\$77client.exe | N/A |
| Token: SeDebugPrivilege | N/A | C:\Users\Admin\AppData\Roaming\$77client.exe | N/A |
| Token: SeDebugPrivilege | N/A | C:\Users\Admin\AppData\Roaming\$77client.exe | 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 "$77client" /tr "C:\Users\Admin\AppData\Roaming\$77client.exe"
C:\Windows\system32\taskeng.exe
taskeng.exe {DEB963C7-1ED6-4545-A0CA-7538CE731F4C} S-1-5-21-1298544033-3225604241-2703760938-1000:IZKCKOTP\Admin:Interactive:[1]
C:\Users\Admin\AppData\Roaming\$77client.exe
C:\Users\Admin\AppData\Roaming\$77client.exe
C:\Users\Admin\AppData\Roaming\$77client.exe
C:\Users\Admin\AppData\Roaming\$77client.exe
C:\Users\Admin\AppData\Roaming\$77client.exe
C:\Users\Admin\AppData\Roaming\$77client.exe
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 | panel-slave.gl.at.ply.gg | udp |
| US | 147.185.221.19:27892 | panel-slave.gl.at.ply.gg | tcp |
| US | 147.185.221.19:27892 | panel-slave.gl.at.ply.gg | tcp |
| US | 147.185.221.19:27892 | panel-slave.gl.at.ply.gg | tcp |
| US | 147.185.221.19:27892 | panel-slave.gl.at.ply.gg | tcp |
| US | 147.185.221.19:27892 | panel-slave.gl.at.ply.gg | tcp |
Files
memory/2300-0-0x000007FEF5D73000-0x000007FEF5D74000-memory.dmp
memory/2300-1-0x0000000000F80000-0x0000000000F90000-memory.dmp
memory/2300-2-0x000007FEF5D70000-0x000007FEF675C000-memory.dmp
memory/2300-7-0x000007FEF5D73000-0x000007FEF5D74000-memory.dmp
memory/2300-8-0x000007FEF5D70000-0x000007FEF675C000-memory.dmp
memory/2568-12-0x0000000001260000-0x0000000001270000-memory.dmp
C:\Users\Admin\AppData\Roaming\$77client.exe
| MD5 | daa12fe7204ec7192ef9b295a1775e1a |
| SHA1 | b9627cbdea6c2317ee58a0020f3ad2e217d63ada |
| SHA256 | 39140afbfa30b4817ff4c5e60bbaac3e87e68cf432bc52aa12f7af8c610bf721 |
| SHA512 | f16e3967a6ac2db9193e234c9129115921afab8b7160a7f59cf8d88511485f49e211a7201e620a43df1764658f6c4e8733180fd94bea15a3539451baec1fd67c |