Analysis
- max time kernel
299s - max time network
301s - platform
windows11-ltsc_2024_x64 - resource
win11ltsc2024-20260709-en - resource tags
- submitted
24/08/2026, 00:39
General
- Target 964367_Πληρωμή.js
- Size 1.2MB
- Sample260824-azz71abf93
- SHA256 40a9a85c9bc45943c2fea55bc577db980e22bc183b8529a4c067d3befb957fb4
Malware Config
Signatures
- Family: Formbook
Formbook is a data stealing malware which is capable of stealing data.
- Formbook payload 2 IoCs
- Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs
Run Powershell and hide display window.
- Accesses Microsoft Outlook profiles 1 TTPs 1 IoCs
- Suspicious use of SetThreadContext 5 IoCs
- Command and Scripting Interpreter: JavaScript 1 TTPs
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
- System Location Discovery: System Language Discovery 1 TTPs 3 IoCs
Attempt gather information about the system language of a victim in order to infer the geographical location of that host.
- Modifies Internet Explorer settings 1 TTPs 1 IoCs
- Suspicious behavior: EnumeratesProcesses 28 IoCs
- Suspicious behavior: GetForegroundWindowSpam 1 IoCs
- Suspicious behavior: MapViewOfSection 8 IoCs
- Suspicious use of AdjustPrivilegeToken 21 IoCs
- Suspicious use of WriteProcessMemory 8 IoCs
- outlook_office_path 1 IoCs
Processes
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C:\Windows\explorer.exeexplorer.exe /LOADSAVEDWINDOWS1⤵
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
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C:\Windows\system32\wscript.exewscript.exe C:\Users\Admin\AppData\Local\Temp\964367_Πληρωμή.js2⤵
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe"C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe" -NoP -EP Bypass -NonInteractive -WindowStyle Hidden -File "C:\Users\Admin\AppData\Local\Temp\t762z2uj\tmp_83710_13e4.ps1"3⤵
- Command and Scripting Interpreter: PowerShell
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Windows\Microsoft.NET\Framework\v4.0.30319\csc.exe"C:\Windows\Microsoft.NET\Framework\v4.0.30319\csc.exe" /noconfig /fullpaths @"C:\Users\Admin\AppData\Local\Temp\fknnk4ir\fknnk4ir.cmdline"4⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
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C:\Windows\Microsoft.NET\Framework\v4.0.30319\cvtres.exeC:\Windows\Microsoft.NET\Framework\v4.0.30319\cvtres.exe /NOLOGO /READONLY /MACHINE:IX86 "/OUT:C:\Users\Admin\AppData\Local\Temp\RESA87B.tmp" "c:\Users\Admin\AppData\Local\Temp\fknnk4ir\CSCCE3D1D99A2DB4207A5696CEEEE5CA3BD.TMP"5⤵
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C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe"C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe"4⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
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C:\Windows\SysWOW64\iexpress.exe"C:\Windows\SysWOW64\iexpress.exe"3⤵
- Accesses Microsoft Outlook profiles
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Modifies Internet Explorer settings
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
- outlook_office_path
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C:\Program Files\Mozilla Firefox\Firefox.exe"C:\Program Files\Mozilla Firefox\Firefox.exe"4⤵
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Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
RESA87B.tmp
fknnk4ir.dll
tmp_83710_13e4.ps1
CSCCE3D1D99A2DB4207A5696CEEEE5CA3BD.TMP
fknnk4ir.0.cs
fknnk4ir.cmdline
memory/1116-49-0x000001824DA80000-0x000001824DB4B000-memory.dmp
memory/2676-39-0x0000000001210000-0x0000000001257000-memory.dmp
memory/2676-33-0x0000000000400000-0x0000000000447000-memory.dmp
memory/2776-42-0x0000000003E10000-0x0000000003EDB000-memory.dmp
memory/3264-11-0x00000000064F0000-0x000000000684B000-memory.dmp
memory/3264-31-0x00000000057A0000-0x00000000057A8000-memory.dmp
memory/3264-15-0x0000000075060000-0x000000007581C000-memory.dmp
memory/3264-16-0x00000000081A0000-0x000000000881C000-memory.dmp
memory/3264-17-0x0000000007B40000-0x0000000007B5A000-memory.dmp
memory/3264-18-0x0000000007B90000-0x0000000007BA6000-memory.dmp
memory/3264-12-0x0000000006960000-0x000000000697E000-memory.dmp
memory/3264-1-0x0000000075072000-0x0000000075073000-memory.dmp
memory/3264-10-0x0000000075060000-0x000000007581C000-memory.dmp
memory/3264-6-0x0000000006280000-0x00000000062E6000-memory.dmp
memory/3264-7-0x00000000062F0000-0x0000000006356000-memory.dmp
memory/3264-13-0x00000000069B0000-0x00000000069FC000-memory.dmp
memory/3264-32-0x00000000057B0000-0x00000000057B8000-memory.dmp
memory/3264-5-0x0000000005B60000-0x0000000005B82000-memory.dmp
memory/3264-34-0x0000000007CE0000-0x0000000007D76000-memory.dmp
memory/3264-35-0x0000000007C70000-0x0000000007C92000-memory.dmp
memory/3264-36-0x0000000008DE0000-0x000000000939A000-memory.dmp
memory/3264-38-0x0000000075060000-0x000000007581C000-memory.dmp
memory/3264-4-0x0000000005BC0000-0x000000000620A000-memory.dmp
memory/3264-2-0x0000000003490000-0x00000000034C6000-memory.dmp
memory/3264-3-0x0000000075060000-0x000000007581C000-memory.dmp
memory/3904-41-0x0000000000640000-0x0000000000684000-memory.dmp
memory/3904-40-0x0000000000640000-0x0000000000684000-memory.dmp