Analysis
- max time kernel
150s - max time network
148s - platform
windows11-ltsc_2024_x64 - resource
win11ltsc2024-20260710-en - resource tags
- submitted
04/09/2026, 12:33
General
- Target Doc001886_1308002341 Pdf.JS.js
- Size 3.5MB
- Sample260904-pre97axtft
- SHA256 2477ec272f268e394a363bb266eab6e4ebb96e252f423a633c9d3d2a6911cd78
Malware Config
Signatures
- Family: Formbook
Formbook is a data stealing malware which is capable of stealing data.
- Formbook payload 3 IoCs
- Executes dropped EXE 1 IoCs
- Suspicious use of SetThreadContext 3 IoCs
- Command and Scripting Interpreter: JavaScript 1 TTPs
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
- Executes a command shell one-liner 1 TTPs 3 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 7 IoCs
Attempt gather information about the system language of a victim in order to infer the geographical location of that host.
- Modifies registry class 2 IoCs
- Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
- Suspicious behavior: EnumeratesProcesses 10 IoCs
- Suspicious behavior: MapViewOfSection 3 IoCs
- Suspicious use of AdjustPrivilegeToken 1 IoCs
- Suspicious use of WriteProcessMemory 7 IoCs
Processes
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C:\Windows\system32\wscript.exewscript.exe "C:\Users\Admin\AppData\Local\Temp\Doc001886_1308002341 Pdf.JS.js"1⤵
- Modifies registry class
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\Documents\UJFAFKIIZMOAXHEC.PIF"C:\Users\Admin\Documents\UJFAFKIIZMOAXHEC.PIF" C:\Users\Admin\Documents\UJFAFKIIZMOAXHEC.ttf2⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\cmd.exeC:\Windows\system32\cmd.exe /c whoami3⤵
- Executes a command shell one-liner
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\whoami.exewhoami4⤵
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
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C:\Windows\SysWOW64\cmd.exeC:\Windows\system32\cmd.exe /c schtasks /query /tn "UJFAFKIIZMOAXHEC" 2>nul3⤵
- Executes a command shell one-liner
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\schtasks.exeschtasks /query /tn "UJFAFKIIZMOAXHEC"4⤵
- System Location Discovery: System Language Discovery
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C:\Windows\SysWOW64\cmd.exeC:\Windows\system32\cmd.exe /c schtasks /create /sc minute /mo 15 /tn "UJFAFKIIZMOAXHEC" /tr "cmd /c \"C:\Users\Admin\Documents\CEHXAOMZIIKFAFJU.url\"" /ru "wbomrqrb\admin" /f /it3⤵
- Executes a command shell one-liner
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\schtasks.exeschtasks /create /sc minute /mo 15 /tn "UJFAFKIIZMOAXHEC" /tr "cmd /c \"C:\Users\Admin\Documents\CEHXAOMZIIKFAFJU.url\"" /ru "wbomrqrb\admin" /f /it4⤵
- System Location Discovery: System Language Discovery
- Scheduled Task/Job: Scheduled Task
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C:\Windows\system32\cmd.execmd1⤵
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
UJFAFKIIZMOAXHEC.PIF
UJFAFKIIZMOAXHEC.ttf
UJFAFKIIZMOAXHEC.ubf
memory/5868-29-0x000000007FE90000-0x000000007FEA0000-memory.dmp
memory/5868-39-0x000000007FE90000-0x000000007FEA0000-memory.dmp
memory/5868-12-0x000000007FE90000-0x000000007FEA0000-memory.dmp
memory/5868-16-0x000000007FE90000-0x000000007FEA0000-memory.dmp
memory/5868-20-0x000000007FE90000-0x000000007FEA0000-memory.dmp
memory/5868-19-0x000000007FE90000-0x000000007FEA0000-memory.dmp
memory/5868-18-0x000000007FE90000-0x000000007FEA0000-memory.dmp
memory/5868-17-0x000000007FE90000-0x000000007FEA0000-memory.dmp
memory/5868-22-0x000000007FE90000-0x000000007FEA0000-memory.dmp
memory/5868-23-0x000000007FE90000-0x000000007FEA0000-memory.dmp
memory/5868-38-0x000000007FE90000-0x000000007FEA0000-memory.dmp
memory/5868-21-0x000000007FE90000-0x000000007FEA0000-memory.dmp
memory/5868-26-0x000000007FE90000-0x000000007FEA0000-memory.dmp
memory/5868-25-0x000000007FE90000-0x000000007FEA0000-memory.dmp
memory/5868-27-0x000000007FE90000-0x000000007FEA0000-memory.dmp
memory/5868-10-0x000000007FE90000-0x000000007FEA0000-memory.dmp
memory/5868-11-0x000000007FE90000-0x000000007FEA0000-memory.dmp
memory/5868-28-0x000000007FE90000-0x000000007FEA0000-memory.dmp
memory/5868-24-0x000000007FE90000-0x000000007FEA0000-memory.dmp
memory/5868-41-0x0000000002A40000-0x0000000002A86000-memory.dmp
memory/5868-36-0x000000007FE90000-0x000000007FEA0000-memory.dmp
memory/5868-37-0x000000007FE90000-0x000000007FEA0000-memory.dmp
memory/5868-35-0x000000007FE90000-0x000000007FEA0000-memory.dmp
memory/5868-34-0x000000007FE90000-0x000000007FEA0000-memory.dmp
memory/5868-33-0x000000007FE90000-0x000000007FEA0000-memory.dmp
memory/5868-32-0x000000007FE90000-0x000000007FEA0000-memory.dmp
memory/5868-31-0x000000007FE90000-0x000000007FEA0000-memory.dmp
memory/5868-30-0x000000007FE90000-0x000000007FEA0000-memory.dmp
memory/5868-40-0x000000007FE90000-0x000000007FEA0000-memory.dmp
memory/5868-42-0x0000000002E60000-0x0000000002EA6000-memory.dmp
memory/5868-43-0x0000000000400000-0x0000000000482000-memory.dmp
memory/5868-45-0x0000000002E60000-0x0000000002EA6000-memory.dmp
memory/5868-48-0x0000000002E60000-0x0000000002EA6000-memory.dmp
memory/5868-52-0x0000000000400000-0x0000000000482000-memory.dmp