Analysis
- max time kernel
148s - max time network
149s - platform
windows11-ltsc_2024_x64 - resource
win11ltsc2024-20260709-en - resource tags
- submitted
03/08/2026, 12:36
General
- Target Doc001886_1308002341 Pdf.exe
- Size 1.0MB
- Sample260803-ps9v7ahe65
- SHA256 04e293d3a35fc2a8a1c90f28fa4d1c92412a04757035972fd49f47de0e5e5a9a
Malware Config
Signatures
- Family: Formbook
Formbook is a data stealing malware which is capable of stealing data.
- Formbook payload 4 IoCs
- Command and Scripting Interpreter: PowerShell 1 TTPs 3 IoCs
Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.
- Executes dropped EXE 1 IoCs
- Accesses Microsoft Outlook profiles 1 TTPs 1 IoCs
- Adds Run key to start application 2 TTPs 1 IoCs
- SmartAssembly .NET packer 1 IoCs
Detects SmartAssembly .NET packer.
- Suspicious use of SetThreadContext 6 IoCs
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
- 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 Internet Explorer settings 1 TTPs 1 IoCs
- Suspicious behavior: EnumeratesProcesses 45 IoCs
- Suspicious behavior: GetForegroundWindowSpam 1 IoCs
- Suspicious behavior: MapViewOfSection 5 IoCs
- Suspicious use of AdjustPrivilegeToken 56 IoCs
- Suspicious use of WriteProcessMemory 12 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:\Users\Admin\AppData\Local\Temp\Doc001886_1308002341 Pdf.exe"C:\Users\Admin\AppData\Local\Temp\Doc001886_1308002341 Pdf.exe"2⤵
- Adds Run key to start application
- 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\SysWOW64\WindowsPowerShell\v1.0\powershell.exe"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Local\Temp\Doc001886_1308002341 Pdf.exe"3⤵
- Command and Scripting Interpreter: PowerShell
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
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C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe"C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe"3⤵
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C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe"C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe"3⤵
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C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe"C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe"3⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
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C:\Windows\system32\WindowsPowerShell\v1.0\powershell.exe"C:\Windows\system32\WindowsPowerShell\v1.0\powershell.exe" -NoProfile -ExecutionPolicy Bypass -WindowStyle Hidden -Command "$5asz50=9712;$2p0qph=([System.Text.Encoding]::UTF8.GetString([System.Convert]::FromBase64String('U3RhcnQtUHJvY2Vzcw==')));$ism0w1=Get-Date;$jb54h2=([System.Text.Encoding]::UTF8.GetString([System.Convert]::FromBase64String('QzpcVXNlcnNcQWRtaW5cQXBwRGF0YVxSb2FtaW5nXENmeVVZdHVOR1RycC5leGU=')));$5asz50=9712;& $2p0qph -FilePath $jb54h2"1⤵
- Command and Scripting Interpreter: PowerShell
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Roaming\CfyUYtuNGTrp.exe"C:\Users\Admin\AppData\Roaming\CfyUYtuNGTrp.exe"2⤵
- Executes dropped EXE
- 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\SysWOW64\WindowsPowerShell\v1.0\powershell.exe"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\CfyUYtuNGTrp.exe"3⤵
- Command and Scripting Interpreter: PowerShell
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
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C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe"C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe"3⤵
- Suspicious behavior: EnumeratesProcesses
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C:\Windows\SysWOW64\RmClient.exe"C:\Windows\SysWOW64\RmClient.exe"1⤵
- 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"2⤵
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Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
StartupProfileData-NonInteractive
__PSScriptPolicyTest_m14fthde.so0.ps1
CfyUYtuNGTrp.exe
memory/960-14-0x0000000000400000-0x0000000000446000-memory.dmp
memory/960-31-0x0000000000CE0000-0x0000000000D26000-memory.dmp
memory/960-23-0x00000000012F0000-0x0000000001664000-memory.dmp
memory/960-16-0x0000000000CE0000-0x0000000000D26000-memory.dmp
memory/960-49-0x0000000000CE0000-0x0000000000D26000-memory.dmp
memory/960-50-0x0000000000CE0000-0x0000000000D26000-memory.dmp
memory/1116-70-0x000001C300ED0000-0x000001C300FF4000-memory.dmp
memory/1436-30-0x00000259ED480000-0x00000259ED4A2000-memory.dmp
memory/1436-34-0x00000259EC9C0000-0x00000259ED364000-memory.dmp
memory/3012-56-0x0000000006510000-0x000000000686B000-memory.dmp
memory/3012-58-0x0000000006AB0000-0x0000000006AFC000-memory.dmp
memory/3012-59-0x00000000704C0000-0x000000007050C000-memory.dmp
memory/3012-62-0x0000000007B50000-0x0000000007BF3000-memory.dmp
memory/4140-3-0x00000000058E0000-0x0000000005972000-memory.dmp
memory/4140-25-0x00000000741E0000-0x000000007499C000-memory.dmp
memory/4140-10-0x0000000005D40000-0x0000000005E1E000-memory.dmp
memory/4140-9-0x0000000005CA0000-0x0000000005D3C000-memory.dmp
memory/4140-8-0x00000000741E0000-0x000000007499C000-memory.dmp
memory/4140-7-0x00000000741F2000-0x00000000741F3000-memory.dmp
memory/4140-6-0x0000000005BA0000-0x0000000005BBA000-memory.dmp
memory/4140-5-0x00000000741E0000-0x000000007499C000-memory.dmp
memory/4140-4-0x0000000005870000-0x000000000587A000-memory.dmp
memory/4140-2-0x0000000005EA0000-0x000000000645A000-memory.dmp
memory/4140-1-0x0000000000DA0000-0x0000000000EAC000-memory.dmp
memory/4140-0-0x00000000741F2000-0x00000000741F3000-memory.dmp
memory/4212-22-0x0000000006020000-0x0000000006086000-memory.dmp
memory/4212-24-0x0000000006090000-0x00000000063EB000-memory.dmp
memory/4212-35-0x0000000006AE0000-0x0000000006B16000-memory.dmp
memory/4212-36-0x0000000074AA0000-0x0000000074AEC000-memory.dmp
memory/4212-39-0x0000000006AC0000-0x0000000006AE0000-memory.dmp
memory/4212-29-0x0000000006530000-0x000000000657C000-memory.dmp
memory/4212-40-0x0000000007500000-0x00000000075A3000-memory.dmp
memory/4212-41-0x0000000007EA0000-0x000000000851C000-memory.dmp
memory/4212-42-0x0000000007860000-0x000000000787A000-memory.dmp
memory/4212-43-0x00000000078D0000-0x00000000078DA000-memory.dmp
memory/4212-44-0x0000000007AD0000-0x0000000007B66000-memory.dmp
memory/4212-26-0x0000000006500000-0x000000000651E000-memory.dmp
memory/4212-47-0x00000000741E0000-0x000000007499C000-memory.dmp
memory/4212-11-0x0000000002C80000-0x0000000002CB6000-memory.dmp
memory/4212-21-0x0000000005F20000-0x0000000005F86000-memory.dmp
memory/4212-18-0x0000000005700000-0x0000000005722000-memory.dmp
memory/4212-12-0x00000000741E0000-0x000000007499C000-memory.dmp
memory/4212-13-0x00000000058D0000-0x0000000005F1A000-memory.dmp
memory/4212-15-0x00000000741E0000-0x000000007499C000-memory.dmp
memory/4212-17-0x0000000002E40000-0x0000000002E50000-memory.dmp
memory/4484-52-0x0000000003AE0000-0x0000000003BD7000-memory.dmp
memory/5516-51-0x00000000004C0000-0x0000000000503000-memory.dmp
memory/5516-48-0x00000000004C0000-0x0000000000503000-memory.dmp