Analysis
- max time kernel
149s - max time network
136s - platform
windows10-2004_x64 - resource
win10v2004-20260911-en - resource tags
- submitted
27/10/2026, 13:46
General
- Target Final_invoices_20251027.js
- Size 85KB
- Sample261027-q28vxset6q
- SHA256 cf197f7debdf926745a1170f38bb28c9e8db7fdf8638bfc13e148d494de9c96a
Malware Config
Signatures
- Family: Guloader,Cloudeye
A shellcode based downloader first seen in 2020.
- 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.
- Suspicious use of NtSetInformationThreadHideFromDebugger 1 TTPs 1 IoCs
- Drops file in Windows directory 2 IoCs
- Command and Scripting Interpreter: JavaScript 1 TTPs
- Executes a command shell one-liner 1 TTPs 1 IoCs
Execution of a cmd.exe one-liner (/c "close" or /k "keep") is a common script/loader stage.
- Reads the TCP/IP host and domain name from the registry 1 TTPs 2 IoCs
The configured hostname and DNS domain identify the machine and are commonly collected to profile a host before it reports in.
- 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 6 IoCs
- Suspicious behavior: MapViewOfSection 1 TTPs 1 IoCs
- Suspicious use of AdjustPrivilegeToken 1 IoCs
- Suspicious use of WriteProcessMemory 5 IoCs
Processes
-
C:\Windows\system32\wscript.exewscript.exe C:\Users\Admin\AppData\Local\Temp\Final_invoices_20251027.js1⤵
- Badlisted process makes network request
- Reads the TCP/IP host and domain name from the registry
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C:\Windows\system32\cmd.execmd.exe /c echo ^%Co^% | %Nonculpable% -1⤵
- Process spawned unexpected child process
- Executes a command shell one-liner
- Suspicious use of WriteProcessMemory
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C:\Windows\system32\cmd.exeC:\Windows\system32\cmd.exe /S /D /c" echo %Co% "2⤵
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\??\c:\windows\syswow64\WindowsPowerShell\v1.0\powershell.exe"c:\windows\syswow64\WindowsPowerShell\v1.0\powershell.exe" -2⤵
- Badlisted process makes network request
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\backgroundtaskhost.exe"C:\Windows\SysWOW64\backgroundtaskhost.exe"3⤵
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C:\Windows\SysWOW64\backgroundtaskhost.exe"C:\Windows\SysWOW64\backgroundtaskhost.exe"3⤵
- System Location Discovery: System Language Discovery
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-
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
__PSScriptPolicyTest_su4izkeq.zi1.ps1
memory/3044-22-0x0000000006A50000-0x0000000006A6A000-memory.dmp
memory/3044-5-0x0000000002B00000-0x0000000002B36000-memory.dmp
memory/3044-7-0x0000000005530000-0x0000000005B58000-memory.dmp
memory/3044-8-0x0000000005460000-0x0000000005482000-memory.dmp
memory/3044-9-0x0000000005C60000-0x0000000005CC6000-memory.dmp
memory/3044-10-0x0000000005D40000-0x0000000005DA6000-memory.dmp
memory/3044-4-0x0000000002B40000-0x0000000002B50000-memory.dmp
memory/3044-18-0x0000000005DF0000-0x0000000006144000-memory.dmp
memory/3044-19-0x00000000064B0000-0x00000000064CE000-memory.dmp
memory/3044-20-0x0000000006500000-0x000000000654C000-memory.dmp
memory/3044-6-0x0000000002B40000-0x0000000002B50000-memory.dmp
memory/3044-21-0x0000000007D30000-0x00000000083AA000-memory.dmp
memory/3044-27-0x0000000002B40000-0x0000000002B50000-memory.dmp
memory/3044-24-0x00000000078B0000-0x00000000078D2000-memory.dmp
memory/3044-25-0x0000000008960000-0x0000000008F04000-memory.dmp
memory/3044-26-0x0000000002B40000-0x0000000002B50000-memory.dmp
memory/3044-23-0x0000000007960000-0x00000000079F6000-memory.dmp
memory/3044-29-0x00000000085E0000-0x00000000085E4000-memory.dmp
memory/3044-28-0x0000000002B40000-0x0000000002B50000-memory.dmp
memory/3044-30-0x0000000008F10000-0x000000000A5DC000-memory.dmp
memory/3044-31-0x0000000008F10000-0x000000000A5DC000-memory.dmp
memory/3044-32-0x0000000002B40000-0x0000000002B50000-memory.dmp
memory/3044-33-0x00000000085E0000-0x00000000085E4000-memory.dmp
memory/3044-34-0x0000000008F10000-0x000000000A5DC000-memory.dmp