Analysis
- max time kernel
118s - max time network
111s - platform
windows10-2004_x64 - resource
win10v2004-20241007-en - resource tags
- submitted
27/11/2024, 02:35
General
- Target a7247c64cc0168290ca3b210e59ef629b46f513205bc6562ec79cdd2cda71725N.exe
- Size 555KB
- Sample241127-c2575syqfm
- SHA256 a7247c64cc0168290ca3b210e59ef629b46f513205bc6562ec79cdd2cda71725
Malware Config
Extracted
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xworm
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3.1
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87.121.86.8:4020
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ssjpS2lhbkGsnEgT
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Install_directory
%AppData%
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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\a7247c64cc0168290ca3b210e59ef629b46f513205bc6562ec79cdd2cda71725N.exe"C:\Users\Admin\AppData\Local\Temp\a7247c64cc0168290ca3b210e59ef629b46f513205bc6562ec79cdd2cda71725N.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\a7247c64cc0168290ca3b210e59ef629b46f513205bc6562ec79cdd2cda71725N.exe"C:\Users\Admin\AppData\Local\Temp\a7247c64cc0168290ca3b210e59ef629b46f513205bc6562ec79cdd2cda71725N.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\a7247c64cc0168290ca3b210e59ef629b46f513205bc6562ec79cdd2cda71725N.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 'a7247c64cc0168290ca3b210e59ef629b46f513205bc6562ec79cdd2cda71725N.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\a7247c64cc0168290ca3b210e59ef629b46f513205bc6562ec79cdd2cda71725N.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
Loading Replay Monitor...
Downloads
powershell.exe.log
StartupProfileData-NonInteractive
StartupProfileData-NonInteractive
__PSScriptPolicyTest_vsvramhw.lpv.ps1
System.dll
memory/116-94-0x000000006EB70000-0x000000006EBBC000-memory.dmp
memory/116-92-0x0000000005F90000-0x00000000062E4000-memory.dmp
memory/1432-72-0x000000006EB70000-0x000000006EBBC000-memory.dmp
memory/1432-61-0x0000000006050000-0x00000000063A4000-memory.dmp
memory/1628-36-0x0000000006E80000-0x0000000006EB2000-memory.dmp
memory/1628-51-0x0000000007240000-0x000000000724A000-memory.dmp
memory/1628-18-0x0000000005130000-0x0000000005758000-memory.dmp
memory/1628-20-0x0000000004FF0000-0x0000000005012000-memory.dmp
memory/1628-22-0x0000000005840000-0x00000000058A6000-memory.dmp
memory/1628-21-0x00000000057D0000-0x0000000005836000-memory.dmp
memory/1628-57-0x00000000074F0000-0x00000000074F8000-memory.dmp
memory/1628-56-0x0000000007510000-0x000000000752A000-memory.dmp
memory/1628-29-0x00000000058B0000-0x0000000005C04000-memory.dmp
memory/1628-34-0x0000000005EB0000-0x0000000005ECE000-memory.dmp
memory/1628-35-0x0000000005ED0000-0x0000000005F1C000-memory.dmp
memory/1628-55-0x0000000007410000-0x0000000007424000-memory.dmp
memory/1628-37-0x000000006EB70000-0x000000006EBBC000-memory.dmp
memory/1628-47-0x0000000006470000-0x000000000648E000-memory.dmp
memory/1628-48-0x0000000006EC0000-0x0000000006F63000-memory.dmp
memory/1628-49-0x0000000007810000-0x0000000007E8A000-memory.dmp
memory/1628-50-0x00000000071D0000-0x00000000071EA000-memory.dmp
memory/1628-17-0x0000000002580000-0x00000000025B6000-memory.dmp
memory/1628-52-0x0000000007450000-0x00000000074E6000-memory.dmp
memory/1628-53-0x00000000073D0000-0x00000000073E1000-memory.dmp
memory/1628-54-0x0000000007400000-0x000000000740E000-memory.dmp
memory/2112-110-0x0000000037180000-0x0000000037724000-memory.dmp
memory/2112-28-0x0000000001A40000-0x0000000003F79000-memory.dmp
memory/2112-16-0x00000000367A0000-0x000000003683C000-memory.dmp
memory/2112-14-0x00000000007E0000-0x0000000001A34000-memory.dmp
memory/2112-13-0x0000000001A40000-0x0000000003F79000-memory.dmp
memory/2112-112-0x00000000379A0000-0x00000000379AA000-memory.dmp
memory/2112-15-0x00000000007E0000-0x00000000007F0000-memory.dmp
memory/2112-111-0x00000000378E0000-0x0000000037972000-memory.dmp
memory/2176-11-0x0000000002E00000-0x0000000005339000-memory.dmp
memory/2176-8-0x0000000002E00000-0x0000000005339000-memory.dmp
memory/2176-9-0x00000000779B1000-0x0000000077AD1000-memory.dmp
memory/2176-10-0x00000000746A4000-0x00000000746A5000-memory.dmp
memory/2176-12-0x0000000002E00000-0x0000000005339000-memory.dmp