Analysis
- max time kernel
149s - max time network
150s - platform
windows10-2004_x64 - resource
win10v2004-20241007-en - resource tags
- submitted
24/11/2024, 15:36
General
- Target 18ea5087eb82e075ca35d2b2dcff9450.exe
- Size 555KB
- Sample241124-s1w6vasmdk
- SHA256 a7247c64cc0168290ca3b210e59ef629b46f513205bc6562ec79cdd2cda71725
Malware Config
Extracted
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xworm
-
3.1
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87.121.86.8:4020
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ssjpS2lhbkGsnEgT
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Install_directory
%AppData%
-
install_file
USB.exe
Signatures
- Detect Xworm Payload 1 IoCs
- Guloader family
- Guloader,Cloudeye
A shellcode based downloader first seen in 2020.
- Xworm
Xworm is a remote access trojan written in C#.
- Xworm family
- Command and Scripting Interpreter: PowerShell 1 TTPs 3 IoCs
Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.
- Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
- Drops startup file 2 IoCs
- Loads dropped DLL 1 IoCs
- Suspicious use of NtCreateThreadExHideFromDebugger 1 IoCs
- Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs
- Suspicious use of SetThreadContext 1 IoCs
- Drops file in Windows directory 1 IoCs
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
- System Location Discovery: System Language Discovery 1 TTPs 5 IoCs
Attempt gather information about the system language of a victim in order to infer the geographical location of that host.
- Suspicious behavior: EnumeratesProcesses 7 IoCs
- Suspicious behavior: MapViewOfSection 1 IoCs
- Suspicious use of AdjustPrivilegeToken 4 IoCs
- Suspicious use of SetWindowsHookEx 1 IoCs
- Suspicious use of WriteProcessMemory 14 IoCs
Processes
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C:\Users\Admin\AppData\Local\Temp\18ea5087eb82e075ca35d2b2dcff9450.exe"C:\Users\Admin\AppData\Local\Temp\18ea5087eb82e075ca35d2b2dcff9450.exe"1⤵
- Loads dropped DLL
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious use of SetThreadContext
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\18ea5087eb82e075ca35d2b2dcff9450.exe"C:\Users\Admin\AppData\Local\Temp\18ea5087eb82e075ca35d2b2dcff9450.exe"2⤵
- Checks computer location settings
- Drops startup file
- Suspicious use of NtCreateThreadExHideFromDebugger
- Suspicious use of NtSetInformationThreadHideFromDebugger
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\18ea5087eb82e075ca35d2b2dcff9450.exe'3⤵
- Command and Scripting Interpreter: PowerShell
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
-
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C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess '18ea5087eb82e075ca35d2b2dcff9450.exe'3⤵
- Command and Scripting Interpreter: PowerShell
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
-
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C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Roaming\18ea5087eb82e075ca35d2b2dcff9450.exe'3⤵
- Command and Scripting Interpreter: PowerShell
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
powershell.exe.log
StartupProfileData-NonInteractive
StartupProfileData-NonInteractive
__PSScriptPolicyTest_flkne04n.aks.ps1
System.dll
memory/832-55-0x0000000007940000-0x0000000007954000-memory.dmp
memory/832-49-0x0000000007D40000-0x00000000083BA000-memory.dmp
memory/832-57-0x0000000007A20000-0x0000000007A28000-memory.dmp
memory/832-56-0x0000000007A40000-0x0000000007A5A000-memory.dmp
memory/832-54-0x0000000007930000-0x000000000793E000-memory.dmp
memory/832-53-0x0000000007900000-0x0000000007911000-memory.dmp
memory/832-19-0x0000000002AD0000-0x0000000002B06000-memory.dmp
memory/832-20-0x0000000005630000-0x0000000005C58000-memory.dmp
memory/832-21-0x0000000005560000-0x0000000005582000-memory.dmp
memory/832-22-0x0000000005D50000-0x0000000005DB6000-memory.dmp
memory/832-23-0x0000000005DC0000-0x0000000005E26000-memory.dmp
memory/832-52-0x0000000007980000-0x0000000007A16000-memory.dmp
memory/832-24-0x0000000005E30000-0x0000000006184000-memory.dmp
memory/832-34-0x00000000063E0000-0x00000000063FE000-memory.dmp
memory/832-35-0x0000000006930000-0x000000000697C000-memory.dmp
memory/832-36-0x0000000007590000-0x00000000075C2000-memory.dmp
memory/832-37-0x000000006E9C0000-0x000000006EA0C000-memory.dmp
memory/832-47-0x00000000069A0000-0x00000000069BE000-memory.dmp
memory/832-48-0x00000000075D0000-0x0000000007673000-memory.dmp
memory/832-51-0x0000000007770000-0x000000000777A000-memory.dmp
memory/832-50-0x0000000007700000-0x000000000771A000-memory.dmp
memory/2560-70-0x0000000006430000-0x0000000006784000-memory.dmp
memory/2560-72-0x000000006E9C0000-0x000000006EA0C000-memory.dmp
memory/3204-11-0x0000000002DF0000-0x0000000005329000-memory.dmp
memory/3204-10-0x00000000744F4000-0x00000000744F5000-memory.dmp
memory/3204-8-0x0000000002DF0000-0x0000000005329000-memory.dmp
memory/3204-12-0x0000000002DF0000-0x0000000005329000-memory.dmp
memory/3204-9-0x0000000077801000-0x0000000077921000-memory.dmp
memory/4072-94-0x000000006E9C0000-0x000000006EA0C000-memory.dmp
memory/4916-18-0x0000000001A40000-0x0000000003F79000-memory.dmp
memory/4916-14-0x00000000007E0000-0x0000000001A34000-memory.dmp
memory/4916-15-0x00000000007E0000-0x00000000007F0000-memory.dmp
memory/4916-13-0x0000000001A40000-0x0000000003F79000-memory.dmp
memory/4916-16-0x0000000036880000-0x000000003691C000-memory.dmp
memory/4916-109-0x0000000037180000-0x0000000037724000-memory.dmp
memory/4916-110-0x00000000378E0000-0x0000000037972000-memory.dmp
memory/4916-111-0x00000000379A0000-0x00000000379AA000-memory.dmp