Analysis
- max time kernel
150s - max time network
150s - platform
windows10-2004_x64 - resource
win10v2004-20260130-en - resource tags
- submitted
04/05/2026, 12:26
General
- Target LKK.hta
- Size 2.3MB
- Sample260504-pl59esft6j
- SHA256 497eeaf4e2c3a4aca41459d25af00b1995dbf6353476df9cc4df678086203cd7
Malware Config
Signatures
- Family: Xworm
Xworm is a remote access trojan written in C#.
- Detect Xworm Payload 1 IoCs
- Process spawned unexpected child process 1 IoCs
This typically indicates the parent process was compromised via an exploit or macro.
- Badlisted process makes network request 2 IoCs
Network request originating from process or tool commonly abused by malware.
- Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs
Run Powershell and hide display window.
- Executes dropped EXE 1 IoCs
- Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs
- Suspicious use of SetThreadContext 1 IoCs
- System Location Discovery: System Language Discovery 1 TTPs 2 IoCs
Attempt gather information about the system language of a victim in order to infer the geographical location of that host.
- Suspicious behavior: EnumeratesProcesses 64 IoCs
- Suspicious use of AdjustPrivilegeToken 3 IoCs
- Suspicious use of SetWindowsHookEx 1 IoCs
- Suspicious use of WriteProcessMemory 8 IoCs
- outlook_office_path 1 IoCs
- outlook_win_path 1 IoCs
Processes
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C:\Windows\SysWOW64\mshta.exeC:\Windows\SysWOW64\mshta.exe "C:\Users\Admin\AppData\Local\Temp\LKK.hta" {1E460BD7-F1C3-4B2E-88BF-4E770A288AF5}{1E460BD7-F1C3-4B2E-88BF-4E770A288AF5}1⤵
- System Location Discovery: System Language Discovery
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C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exepowershell.exe -ExecutionPolicy Bypass -NoProfile -WindowStyle Hidden -Command "IEX $env:INTERNAL_DB_CACHE;[Environment]::SetEnvironmentVariable('INTERNAL_DB_CACHE',$null,'User')"1⤵
- Process spawned unexpected child process
- Badlisted process makes network request
- Command and Scripting Interpreter: PowerShell
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Windows\Microsoft.NET\Framework\v4.0.30319\msBuild.exe"C:\Windows\Microsoft.NET\Framework\v4.0.30319\msBuild.exe"2⤵
- Accesses Microsoft Outlook profiles
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
- outlook_office_path
- outlook_win_path
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C:\Windows\Microsoft.NET\Framework64\v4.0.30319\csc.exe"C:\Windows\Microsoft.NET\Framework64\v4.0.30319\csc.exe" /target:exe /out:"C:\Users\Admin\AppData\Local\Temp\MSBuild.exe" "C:\Users\Admin\AppData\Local\Temp\guardian_src_ccbc9246589d4a5192ab5a3ec54e9403.cs"3⤵
- Suspicious use of WriteProcessMemory
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C:\Windows\Microsoft.NET\Framework64\v4.0.30319\cvtres.exeC:\Windows\Microsoft.NET\Framework64\v4.0.30319\cvtres.exe /NOLOGO /READONLY /MACHINE:IX86 "/OUT:C:\Users\Admin\AppData\Local\Temp\RES81CD.tmp" "c:\Users\Admin\AppData\Local\Temp\CSC3B0130EF716946AF8B9AEC303CE6C889.TMP"4⤵
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C:\Users\Admin\AppData\Local\Temp\MSBuild.exe"C:\Users\Admin\AppData\Local\Temp\MSBuild.exe" 28643⤵
- Executes dropped EXE
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
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Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
MSBuild.exe
RES81CD.tmp
__PSScriptPolicyTest_2v5luwo3.asq.ps1
CSC3B0130EF716946AF8B9AEC303CE6C889.TMP
guardian_src_ccbc9246589d4a5192ab5a3ec54e9403.cs
memory/1168-2-0x000001D1F3BF0000-0x000001D1F3C00000-memory.dmp
memory/1168-1-0x000001D1F3BF0000-0x000001D1F3C00000-memory.dmp
memory/1168-10-0x000001D1F3C30000-0x000001D1F3C52000-memory.dmp
memory/1168-11-0x000001D1F40F0000-0x000001D1F41FC000-memory.dmp
memory/1168-15-0x000001D1DB460000-0x000001D1DB46C000-memory.dmp
memory/1244-37-0x000001D783AB0000-0x000001D783ABC000-memory.dmp
memory/1732-34-0x000002505D060000-0x000002505D06C000-memory.dmp
memory/2864-20-0x0000000005D00000-0x0000000005D0A000-memory.dmp
memory/2864-17-0x0000000005710000-0x00000000057AC000-memory.dmp
memory/2864-21-0x0000000005430000-0x0000000005513000-memory.dmp
memory/2864-24-0x0000000005530000-0x0000000005549000-memory.dmp
memory/2864-25-0x0000000008260000-0x00000000086D6000-memory.dmp
memory/2864-26-0x0000000008B30000-0x0000000008BAC000-memory.dmp
memory/2864-27-0x0000000008900000-0x0000000008908000-memory.dmp
memory/2864-44-0x0000000009300000-0x00000000094C2000-memory.dmp
memory/2864-19-0x0000000006510000-0x00000000065A2000-memory.dmp
memory/2864-18-0x0000000005D60000-0x0000000006304000-memory.dmp
memory/2864-22-0x0000000005530000-0x0000000005549000-memory.dmp
memory/2864-16-0x0000000005590000-0x00000000055F6000-memory.dmp
memory/2864-12-0x0000000000400000-0x000000000041C000-memory.dmp
memory/3752-41-0x00000000004B0000-0x00000000004B8000-memory.dmp
memory/4160-0-0x0000000003430000-0x0000000003449000-memory.dmp