Analysis
- max time kernel
149s - max time network
150s - platform
windows11-21h2_x64 - resource
win11-20251015-en - resource tags
- submitted
02/12/2025, 11:53
General
- Target Outstanding Invoices.exe
- Size 914KB
- Sample251202-n2rwassjbx
- SHA256 82dcb4d2d2eea41de50b93c348a7850a4779e3e8f758c914605cb6f98a4a2be0
Malware Config
Extracted
-
xworm
-
XWorm V6.4
-
45.138.50.124:1277
-
wDF1oDX35NlzSuDS
-
Install_directory
%AppData%
-
install_file
XWormClient.exe
Signatures
- Detect Xworm Payload 1 IoCs
- Xworm
Xworm is a remote access trojan written in C#.
- Xworm family
- Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs
Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.
- Drops startup file 3 IoCs
- Executes dropped EXE 2 IoCs
- Adds Run key to start application 2 TTPs 1 IoCs
- AutoIT Executable 2 IoCs
AutoIT scripts compiled to PE executables.
- Suspicious use of SetThreadContext 2 IoCs
- UPX packed file 5 IoCs
Detects executables packed with UPX/modified UPX open source packer.
- Program crash 1 IoCs
- System Location Discovery: System Language Discovery 1 TTPs 6 IoCs
Attempt gather information about the system language of a victim in order to infer the geographical location of that host.
- Suspicious behavior: EnumeratesProcesses 3 IoCs
- Suspicious behavior: MapViewOfSection 1 IoCs
- Suspicious use of AdjustPrivilegeToken 2 IoCs
- Suspicious use of FindShellTrayWindow 4 IoCs
- Suspicious use of SendNotifyMessage 4 IoCs
- Suspicious use of SetWindowsHookEx 1 IoCs
- Suspicious use of WriteProcessMemory 8 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\Outstanding Invoices.exe"C:\Users\Admin\AppData\Local\Temp\Outstanding Invoices.exe"1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\isochronal\nondefinition.exe"C:\Users\Admin\AppData\Local\Temp\Outstanding Invoices.exe"2⤵
- Drops startup file
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: MapViewOfSection
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- Suspicious use of WriteProcessMemory
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C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe"C:\Users\Admin\AppData\Local\Temp\Outstanding Invoices.exe"3⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe"4⤵
- Command and Scripting Interpreter: PowerShell
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
-
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C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe"C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe"4⤵
- Drops startup file
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
-
-
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 3972 -s 7283⤵
- Program crash
-
-
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 3972 -ip 39721⤵
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C:\Users\Admin\AppData\Roaming\XWormClient.exeC:\Users\Admin\AppData\Roaming\XWormClient.exe1⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
RegSvcs.exe.log
__PSScriptPolicyTest_t0rxkrzx.m30.ps1
aut70EA.tmp
benting
nondefinition.exe
XWormClient.exe
memory/1036-12-0x0000000002A40000-0x0000000002A44000-memory.dmp
memory/1036-18-0x00000000000A0000-0x0000000000295000-memory.dmp
memory/1036-0-0x00000000000A0000-0x0000000000295000-memory.dmp
memory/3972-40-0x0000000000430000-0x0000000000625000-memory.dmp
memory/3972-16-0x0000000000430000-0x0000000000625000-memory.dmp
memory/4928-45-0x0000000000400000-0x0000000000410000-memory.dmp
memory/5060-91-0x0000000000C30000-0x0000000000C51000-memory.dmp
memory/5060-89-0x0000000000320000-0x000000000032E000-memory.dmp
memory/5060-90-0x0000000004C20000-0x0000000004C5C000-memory.dmp
memory/5400-42-0x0000000005AB0000-0x0000000005AC0000-memory.dmp
memory/5400-43-0x00000000073D0000-0x0000000007424000-memory.dmp
memory/5400-44-0x0000000009A70000-0x0000000009B0C000-memory.dmp
memory/5400-36-0x0000000005AB0000-0x0000000005AC0000-memory.dmp
memory/5400-35-0x00000000058A0000-0x0000000005932000-memory.dmp
memory/5400-38-0x0000000005B30000-0x0000000005BA4000-memory.dmp
memory/5400-41-0x0000000005D70000-0x0000000005D8A000-memory.dmp
memory/5400-34-0x0000000005F20000-0x00000000064C6000-memory.dmp
memory/5400-37-0x0000000005950000-0x000000000595A000-memory.dmp
memory/5400-33-0x0000000000400000-0x0000000000482000-memory.dmp
memory/5720-50-0x0000000005360000-0x0000000005382000-memory.dmp
memory/5720-59-0x00000000055D0000-0x0000000005927000-memory.dmp
memory/5720-60-0x0000000005AC0000-0x0000000005ADE000-memory.dmp
memory/5720-61-0x0000000005B80000-0x0000000005BCC000-memory.dmp
memory/5720-62-0x0000000006A70000-0x0000000006AA4000-memory.dmp
memory/5720-63-0x00000000748C0000-0x000000007490C000-memory.dmp
memory/5720-70-0x0000000006AB0000-0x0000000006ACE000-memory.dmp
memory/5720-71-0x0000000006AE0000-0x0000000006B84000-memory.dmp
memory/5720-72-0x0000000007460000-0x0000000007ADA000-memory.dmp
memory/5720-73-0x0000000006E20000-0x0000000006E3A000-memory.dmp
memory/5720-74-0x0000000006EA0000-0x0000000006EAA000-memory.dmp
memory/5720-75-0x00000000070B0000-0x0000000007146000-memory.dmp
memory/5720-76-0x0000000007030000-0x0000000007041000-memory.dmp
memory/5720-77-0x0000000007060000-0x000000000706E000-memory.dmp
memory/5720-78-0x0000000007070000-0x0000000007085000-memory.dmp
memory/5720-79-0x0000000007170000-0x000000000718A000-memory.dmp
memory/5720-80-0x0000000007160000-0x0000000007168000-memory.dmp
memory/5720-54-0x0000000005470000-0x00000000054D6000-memory.dmp
memory/5720-51-0x0000000005400000-0x0000000005466000-memory.dmp
memory/5720-49-0x0000000004CD0000-0x00000000052FA000-memory.dmp
memory/5720-48-0x0000000000E90000-0x0000000000EC6000-memory.dmp