Analysis Overview
SHA256
39140afbfa30b4817ff4c5e60bbaac3e87e68cf432bc52aa12f7af8c610bf721
Threat Level: Known bad
The file Rat remover.exe was found to be: Known bad.
Malicious Activity Summary
Xworm family
Detect Xworm Payload
Xworm
Executes dropped EXE
Checks computer location settings
Drops startup file
Adds Run key to start application
Looks up external IP address via web service
Enumerates physical storage devices
Unsigned PE
Creates scheduled task(s)
Suspicious behavior: EnumeratesProcesses
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Suspicious use of AdjustPrivilegeToken
Uses Task Scheduler COM API
MITRE ATT&CK
Enterprise Matrix V15
Analysis: static1
Detonation Overview
Reported
2024-06-01 07:10
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
2024-06-01 07:10
Reported
2024-06-01 07:12
Platform
win7-20240220-en
Max time kernel
123s
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 |
| 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\Rat remover.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\Rat remover.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 |
Adds Run key to start application
| Description | Indicator | Process | Target |
| Set value (str) | \REGISTRY\USER\S-1-5-21-2721934792-624042501-2768869379-1000\Software\Microsoft\Windows\CurrentVersion\Run\$77client = "C:\\Users\\Admin\\AppData\\Roaming\\$77client.exe" | C:\Users\Admin\AppData\Local\Temp\Rat remover.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\Rat remover.exe | N/A |
Suspicious use of AdjustPrivilegeToken
| Description | Indicator | Process | Target |
| Token: SeDebugPrivilege | N/A | C:\Users\Admin\AppData\Local\Temp\Rat remover.exe | N/A |
| Token: SeDebugPrivilege | N/A | C:\Users\Admin\AppData\Local\Temp\Rat remover.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\Rat remover.exe | N/A |
Suspicious use of WriteProcessMemory
Uses Task Scheduler COM API
Processes
C:\Users\Admin\AppData\Local\Temp\Rat remover.exe
"C:\Users\Admin\AppData\Local\Temp\Rat remover.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 {02EDDCC5-5FA4-494C-B8C9-7FCF16C9CF2D} S-1-5-21-2721934792-624042501-2768869379-1000:BISMIZHX\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
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 | 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 |
Files
memory/3032-0-0x000007FEF5693000-0x000007FEF5694000-memory.dmp
memory/3032-1-0x0000000000180000-0x0000000000190000-memory.dmp
memory/3032-2-0x000007FEF5690000-0x000007FEF607C000-memory.dmp
memory/3032-7-0x000007FEF5693000-0x000007FEF5694000-memory.dmp
memory/3032-8-0x000007FEF5690000-0x000007FEF607C000-memory.dmp
C:\Users\Admin\AppData\Roaming\$77client.exe
| MD5 | daa12fe7204ec7192ef9b295a1775e1a |
| SHA1 | b9627cbdea6c2317ee58a0020f3ad2e217d63ada |
| SHA256 | 39140afbfa30b4817ff4c5e60bbaac3e87e68cf432bc52aa12f7af8c610bf721 |
| SHA512 | f16e3967a6ac2db9193e234c9129115921afab8b7160a7f59cf8d88511485f49e211a7201e620a43df1764658f6c4e8733180fd94bea15a3539451baec1fd67c |
memory/1660-12-0x00000000013E0000-0x00000000013F0000-memory.dmp
memory/844-15-0x0000000000100000-0x0000000000110000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2024-06-01 07:10
Reported
2024-06-01 07:12
Platform
win10v2004-20240426-en
Max time kernel
141s
Max time network
143s
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\Rat remover.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\Rat remover.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\Rat remover.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 |
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\Rat remover.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\Rat remover.exe | N/A |
Suspicious use of AdjustPrivilegeToken
| Description | Indicator | Process | Target |
| Token: SeDebugPrivilege | N/A | C:\Users\Admin\AppData\Local\Temp\Rat remover.exe | N/A |
| Token: SeDebugPrivilege | N/A | C:\Users\Admin\AppData\Local\Temp\Rat remover.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\Rat remover.exe | N/A |
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 4344 wrote to memory of 4804 | N/A | C:\Users\Admin\AppData\Local\Temp\Rat remover.exe | C:\Windows\System32\schtasks.exe |
| PID 4344 wrote to memory of 4804 | N/A | C:\Users\Admin\AppData\Local\Temp\Rat remover.exe | C:\Windows\System32\schtasks.exe |
Uses Task Scheduler COM API
Processes
C:\Users\Admin\AppData\Local\Temp\Rat remover.exe
"C:\Users\Admin\AppData\Local\Temp\Rat remover.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
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | 97.17.167.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 25.24.18.2.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 23.159.190.20.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 | 232.168.11.51.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 | 26.165.165.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 15.164.165.52.in-addr.arpa | udp |
| US | 147.185.221.19:27892 | panel-slave.gl.at.ply.gg | tcp |
| US | 8.8.8.8:53 | 16.24.18.2.in-addr.arpa | udp |
| 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/4344-0-0x00007FF91B6D3000-0x00007FF91B6D5000-memory.dmp
memory/4344-1-0x0000000000020000-0x0000000000030000-memory.dmp
memory/4344-2-0x00007FF91B6D0000-0x00007FF91C191000-memory.dmp
memory/4344-7-0x00007FF91B6D3000-0x00007FF91B6D5000-memory.dmp
memory/4344-8-0x00007FF91B6D0000-0x00007FF91C191000-memory.dmp
C:\Users\Admin\AppData\Roaming\$77client.exe
| MD5 | daa12fe7204ec7192ef9b295a1775e1a |
| SHA1 | b9627cbdea6c2317ee58a0020f3ad2e217d63ada |
| SHA256 | 39140afbfa30b4817ff4c5e60bbaac3e87e68cf432bc52aa12f7af8c610bf721 |
| SHA512 | f16e3967a6ac2db9193e234c9129115921afab8b7160a7f59cf8d88511485f49e211a7201e620a43df1764658f6c4e8733180fd94bea15a3539451baec1fd67c |
memory/4392-11-0x00007FF91B6D0000-0x00007FF91C191000-memory.dmp
memory/4392-13-0x00007FF91B6D0000-0x00007FF91C191000-memory.dmp
C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\$77client.exe.log
| MD5 | 2ff39f6c7249774be85fd60a8f9a245e |
| SHA1 | 684ff36b31aedc1e587c8496c02722c6698c1c4e |
| SHA256 | e1b91642d85d98124a6a31f710e137ab7fd90dec30e74a05ab7fcf3b7887dced |
| SHA512 | 1d7e8b92ef4afd463d62cfa7e8b9d1799db5bf2a263d3cd7840df2e0a1323d24eb595b5f8eb615c6cb15f9e3a7b4fc99f8dd6a3d34479222e966ec708998aed1 |