Analysis
- max time kernel
148s - max time network
143s - platform
windows11-ltsc_2024_x64 - resource
win11ltsc2024-20260709-en - resource tags
- submitted
31/08/2026, 14:09
General
- Target BIK1910485_20260831.js
- Size 95KB
- Sample260831-rf92jabl9w
- SHA256 968b715acabde7d49a5e0c1081443e5bc335d9647f19cc93bf6c3ebc9384a155
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 1 IoCs
Network request originating from process or tool commonly abused by malware.
- Suspicious use of NtSetInformationThreadHideFromDebugger 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.
- 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 12 IoCs
- Suspicious behavior: MapViewOfSection 1 IoCs
- Suspicious use of AdjustPrivilegeToken 1 IoCs
- Suspicious use of WriteProcessMemory 5 IoCs
Processes
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C:\Windows\system32\wscript.exewscript.exe C:\Users\Admin\AppData\Local\Temp\BIK1910485_20260831.js1⤵
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C:\Windows\system32\cmd.execmd.exe /c echo ^%Snath^% | %Proliquor% -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 %Snath% "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
memory/5532-14-0x0000000007B90000-0x0000000007C26000-memory.dmp
memory/5532-26-0x0000000074E60000-0x000000007561C000-memory.dmp
memory/5532-2-0x0000000074E60000-0x000000007561C000-memory.dmp
memory/5532-3-0x0000000005D50000-0x000000000639A000-memory.dmp
memory/5532-4-0x0000000005B50000-0x0000000005B72000-memory.dmp
memory/5532-5-0x0000000005BF0000-0x0000000005C56000-memory.dmp
memory/5532-6-0x0000000005C60000-0x0000000005CC6000-memory.dmp
memory/5532-9-0x0000000006450000-0x00000000067AB000-memory.dmp
memory/5532-10-0x00000000068E0000-0x00000000068FE000-memory.dmp
memory/5532-11-0x00000000069A0000-0x00000000069EC000-memory.dmp
memory/5532-12-0x0000000008010000-0x000000000868C000-memory.dmp
memory/5532-13-0x0000000006E10000-0x0000000006E2A000-memory.dmp
memory/5532-1-0x00000000030B0000-0x00000000030E6000-memory.dmp
memory/5532-0-0x0000000074E72000-0x0000000074E73000-memory.dmp
memory/5532-20-0x0000000074E60000-0x000000007561C000-memory.dmp
memory/5532-17-0x0000000074E72000-0x0000000074E73000-memory.dmp
memory/5532-18-0x0000000074E60000-0x000000007561C000-memory.dmp
memory/5532-19-0x0000000074E60000-0x000000007561C000-memory.dmp
memory/5532-15-0x0000000007900000-0x0000000007922000-memory.dmp
memory/5532-21-0x0000000074E60000-0x000000007561C000-memory.dmp
memory/5532-23-0x0000000074E60000-0x000000007561C000-memory.dmp
memory/5532-24-0x0000000074E60000-0x000000007561C000-memory.dmp
memory/5532-16-0x0000000008C50000-0x000000000920A000-memory.dmp
memory/5532-25-0x000000000A210000-0x000000000AE7D000-memory.dmp
memory/5532-28-0x0000000074E60000-0x000000007561C000-memory.dmp
memory/5832-27-0x0000000000950000-0x000000000097A000-memory.dmp