Analysis
- max time kernel
129s - max time network
132s - platform
windows11-ltsc_2024_x64 - resource
win11ltsc2024-20260629-en - resource tags
- submitted
02/07/2026, 02:50
General
- Target PB2400.JS.js
- Size 6.5MB
- Sample260702-dbtxvshy3j
- SHA256 48f8f9303da8baab31e347d8f5686fe4b13a3a34af9e34395a2b61f27fd0c2bd
Malware Config
Signatures
- Boot or Logon Autostart Execution: Active Setup 2 TTPs 1 IoCs
Adversaries may achieve persistence by adding a Registry key to the Active Setup of the local machine.
- Uses browser remote debugging 2 TTPs 2 IoCs
Can be used control the browser and steal sensitive information such as credentials and session cookies.
- Executes dropped EXE 2 IoCs
- Loads dropped DLL 2 IoCs
- Reads user/profile data of web browsers 3 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
- Accesses Microsoft Outlook profiles 1 TTPs 1 IoCs
- Enumerates connected drives 3 TTPs 2 IoCs
Attempts to read the root path of hard drives other than the default C: drive.
- Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs
- Browser Information Discovery 1 TTPs
Enumerate browser information.
- 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 1 IoCs
Attempt gather information about the system language of a victim in order to infer the geographical location of that host.
- Checks SCSI registry key(s) 3 TTPs 62 IoCs
SCSI information is often read in order to detect sandboxing environments.
- Enumerates system info in registry 2 TTPs 4 IoCs
- Modifies Internet Explorer settings 1 TTPs 1 IoCs
- Modifies registry class 42 IoCs
- Suspicious behavior: EnumeratesProcesses 13 IoCs
- Suspicious use of AdjustPrivilegeToken 37 IoCs
- Suspicious use of FindShellTrayWindow 54 IoCs
- Suspicious use of SendNotifyMessage 40 IoCs
- Suspicious use of SetWindowsHookEx 3 IoCs
- Suspicious use of WriteProcessMemory 7 IoCs
- Uses Task Scheduler COM API 1 TTPs
The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.
- Uses Volume Shadow Copy WMI provider
The Volume Shadow Copy service is used to manage backups/snapshots.
- Uses Volume Shadow Copy service COM API
The Volume Shadow Copy service is used to manage backups/snapshots.
- outlook_office_path 1 IoCs
Processes
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C:\Windows\system32\wscript.exewscript.exe C:\Users\Admin\AppData\Local\Temp\PB2400.JS.js1⤵
- Modifies registry class
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\Documents\AACMTNOOVSFJRXRH.PIF"C:\Users\Admin\Documents\AACMTNOOVSFJRXRH.PIF" C:\Users\Admin\Documents\AACMTNOOVSFJRXRH.ttf2⤵
- Executes dropped EXE
- Accesses Microsoft Outlook profiles
- Suspicious use of NtSetInformationThreadHideFromDebugger
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
- outlook_office_path
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C:\Users\Admin\AppData\Local\Temp\DumpBrowserSecrets.exe"C:\Users\Admin\AppData\Local\Temp\DumpBrowserSecrets.exe" /b:chrome /b:edge /b:brave /e:all3⤵
- Executes dropped EXE
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
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C:\Program Files\Google\Chrome\Application\chrome.exe"C:\Program Files\Google\Chrome\Application\chrome.exe" --headless=new --disable-gpu --remote-debugging-port=9222 --disable-background-timer-throttling4⤵
- Uses browser remote debugging
- Loads dropped DLL
- Enumerates system info in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
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C:\Program Files\Google\Chrome\Application\chrome.exe"C:\Program Files\Google\Chrome\Application\chrome.exe" --type=crashpad-handler --user-data-dir=C:\Users\Admin\AppData\Local\Temp\HeadlessChrome1252240709187 /prefetch:4 --monitor-self-annotation=ptype=crashpad-handler --database=C:\Users\Admin\AppData\Local\Temp\HeadlessChrome1252240709187\Crashpad --metrics-dir=C:\Users\Admin\AppData\Local\Temp\HeadlessChrome1252240709187 --url=https://clients2.google.com/cr/report --annotation=channel= --annotation=plat=Win64 --annotation=prod=Chrome --annotation=ver=140.0.7339.81 --initial-client-data=0x208,0x20c,0x210,0x1e4,0x214,0x7ffc1d14c728,0x7ffc1d14c734,0x7ffc1d14c7405⤵
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C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --headless=new --disable-gpu --remote-debugging-port=9222 --disable-background-timer-throttling4⤵
- Uses browser remote debugging
- Loads dropped DLL
- Enumerates system info in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
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C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=crashpad-handler --user-data-dir=C:\Users\Admin\AppData\Local\Temp\HeadlessEdge3312240709437 /prefetch:4 --monitor-self-annotation=ptype=crashpad-handler --database=C:\Users\Admin\AppData\Local\Temp\HeadlessEdge3312240709437\Crashpad --annotation=IsOfficialBuild=1 --annotation=channel= --annotation=chromium-version=139.0.7258.155 "--annotation=exe=C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --annotation=plat=Win64 --annotation=prod=Edge --annotation=ver=139.0.3405.125 --initial-client-data=0x308,0x30c,0x310,0x304,0x398,0x7ffc1cd2c188,0x7ffc1cd2c194,0x7ffc1cd2c1a05⤵
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C:\Program Files\Google\Chrome\Application\140.0.7339.81\elevation_service.exe"C:\Program Files\Google\Chrome\Application\140.0.7339.81\elevation_service.exe"1⤵
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C:\Program Files\Google\Chrome\Application\140.0.7339.81\elevation_service.exe"C:\Program Files\Google\Chrome\Application\140.0.7339.81\elevation_service.exe"1⤵
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C:\Program Files (x86)\Microsoft\Edge\Application\139.0.3405.125\elevation_service.exe"C:\Program Files (x86)\Microsoft\Edge\Application\139.0.3405.125\elevation_service.exe"1⤵
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C:\Windows\system32\sihost.exesihost.exe1⤵
- Suspicious use of FindShellTrayWindow
- Suspicious use of WriteProcessMemory
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C:\Windows\explorer.exeexplorer.exe /LOADSAVEDWINDOWS2⤵
- Boot or Logon Autostart Execution: Active Setup
- Enumerates connected drives
- Checks SCSI registry key(s)
- Modifies Internet Explorer settings
- Modifies registry class
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- Suspicious use of SetWindowsHookEx
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C:\Windows\SystemApps\MicrosoftWindows.Client.CBS_cw5n1h2txyewy\SearchHost.exe"C:\Windows\SystemApps\MicrosoftWindows.Client.CBS_cw5n1h2txyewy\SearchHost.exe" -ServerName:CortanaUI.AppXstmwaab17q5s3y22tp6apqz7a45vwv65.mca1⤵
- Modifies registry class
- Suspicious use of SetWindowsHookEx
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C:\Windows\SystemApps\Microsoft.Windows.StartMenuExperienceHost_cw5n1h2txyewy\StartMenuExperienceHost.exe"C:\Windows\SystemApps\Microsoft.Windows.StartMenuExperienceHost_cw5n1h2txyewy\StartMenuExperienceHost.exe" -ServerName:App.AppXywbrabmsek0gm3tkwpr5kwzbs55tkqay.mca1⤵
- Modifies registry class
- Suspicious use of SetWindowsHookEx
Network
MITRE ATT&CK Enterprise v16
Persistence
Boot or Logon Autostart Execution
1Active Setup
1Modify Authentication Process
1Credential Access
Credentials from Password Stores
1Credentials from Web Browsers
1Modify Authentication Process
1Steal Web Session Cookie
1Unsecured Credentials
1Credentials In Files
1Replay Monitor
Loading Replay Monitor...
Downloads
prep_Activatable Class_Hermes_perf.cache
ChromeData.json
DllExtractChromiumSecrets.dll
DumpBrowserSecrets.exe
EdgeData.json
settings.dat
throttle_store.dat
AACMTNOOVSFJRXRH.PIF
AACMTNOOVSFJRXRH.ttf
memory/5632-49-0x000000007FE90000-0x000000007FEA0000-memory.dmp
memory/5632-43-0x000000007FE90000-0x000000007FEA0000-memory.dmp
memory/5632-14-0x000000007FE90000-0x000000007FEA0000-memory.dmp
memory/5632-12-0x0000000000D50000-0x0000000000D51000-memory.dmp
memory/5632-11-0x000000007FE90000-0x000000007FEA0000-memory.dmp
memory/5632-17-0x0000000000D60000-0x0000000000D61000-memory.dmp
memory/5632-19-0x000000007FE90000-0x000000007FEA0000-memory.dmp
memory/5632-18-0x0000000002780000-0x0000000002781000-memory.dmp
memory/5632-20-0x000000007FE90000-0x000000007FEA0000-memory.dmp
memory/5632-16-0x000000007FE90000-0x000000007FEA0000-memory.dmp
memory/5632-21-0x000000007FE90000-0x000000007FEA0000-memory.dmp
memory/5632-36-0x000000007FE90000-0x000000007FEA0000-memory.dmp
memory/5632-58-0x000000007FE90000-0x000000007FEA0000-memory.dmp
memory/5632-72-0x000000007FE90000-0x000000007FEA0000-memory.dmp
memory/5632-71-0x000000007FE90000-0x000000007FEA0000-memory.dmp
memory/5632-70-0x000000007FE90000-0x000000007FEA0000-memory.dmp
memory/5632-46-0x000000007FE90000-0x000000007FEA0000-memory.dmp
memory/5632-68-0x000000007FE90000-0x000000007FEA0000-memory.dmp
memory/5632-67-0x000000007FE90000-0x000000007FEA0000-memory.dmp
memory/5632-66-0x000000007FE90000-0x000000007FEA0000-memory.dmp
memory/5632-65-0x000000007FE90000-0x000000007FEA0000-memory.dmp
memory/5632-64-0x000000007FE90000-0x000000007FEA0000-memory.dmp
memory/5632-63-0x000000007FE90000-0x000000007FEA0000-memory.dmp
memory/5632-62-0x000000007FE90000-0x000000007FEA0000-memory.dmp
memory/5632-44-0x000000007FE90000-0x000000007FEA0000-memory.dmp
memory/5632-60-0x000000007FE90000-0x000000007FEA0000-memory.dmp
memory/5632-59-0x000000007FE90000-0x000000007FEA0000-memory.dmp
memory/5632-57-0x000000007FE90000-0x000000007FEA0000-memory.dmp
memory/5632-56-0x000000007FE90000-0x000000007FEA0000-memory.dmp
memory/5632-55-0x000000007FE90000-0x000000007FEA0000-memory.dmp
memory/5632-54-0x000000007FE90000-0x000000007FEA0000-memory.dmp
memory/5632-53-0x000000007FE90000-0x000000007FEA0000-memory.dmp
memory/5632-52-0x000000007FE90000-0x000000007FEA0000-memory.dmp
memory/5632-51-0x000000007FE90000-0x000000007FEA0000-memory.dmp
memory/5632-50-0x000000007FE90000-0x000000007FEA0000-memory.dmp
memory/5632-13-0x000000007FE90000-0x000000007FEA0000-memory.dmp
memory/5632-48-0x000000007FE90000-0x000000007FEA0000-memory.dmp
memory/5632-47-0x000000007FE90000-0x000000007FEA0000-memory.dmp
memory/5632-69-0x000000007FE90000-0x000000007FEA0000-memory.dmp
memory/5632-15-0x000000007FE90000-0x000000007FEA0000-memory.dmp
memory/5632-61-0x000000007FE90000-0x000000007FEA0000-memory.dmp
memory/5632-45-0x000000007FE90000-0x000000007FEA0000-memory.dmp
memory/5632-42-0x000000007FE90000-0x000000007FEA0000-memory.dmp
memory/5632-41-0x000000007FE90000-0x000000007FEA0000-memory.dmp
memory/5632-40-0x000000007FE90000-0x000000007FEA0000-memory.dmp
memory/5632-39-0x000000007FE90000-0x000000007FEA0000-memory.dmp
memory/5632-38-0x000000007FE90000-0x000000007FEA0000-memory.dmp
memory/5632-37-0x000000007FE90000-0x000000007FEA0000-memory.dmp
memory/5632-30-0x000000007FE90000-0x000000007FEA0000-memory.dmp
memory/5632-29-0x000000007FE90000-0x000000007FEA0000-memory.dmp
memory/5632-28-0x000000007FE90000-0x000000007FEA0000-memory.dmp
memory/5632-24-0x000000007FE90000-0x000000007FEA0000-memory.dmp
memory/5632-35-0x000000007FE90000-0x000000007FEA0000-memory.dmp
memory/5632-34-0x000000007FE90000-0x000000007FEA0000-memory.dmp
memory/5632-33-0x000000007FE90000-0x000000007FEA0000-memory.dmp
memory/5632-32-0x000000007FE90000-0x000000007FEA0000-memory.dmp
memory/5632-31-0x000000007FE90000-0x000000007FEA0000-memory.dmp
memory/5632-27-0x000000007FE90000-0x000000007FEA0000-memory.dmp
memory/5632-26-0x000000007FE90000-0x000000007FEA0000-memory.dmp
memory/5632-25-0x000000007FE90000-0x000000007FEA0000-memory.dmp
memory/5632-23-0x000000007FE90000-0x000000007FEA0000-memory.dmp
memory/5632-22-0x000000007FE90000-0x000000007FEA0000-memory.dmp
memory/5632-506-0x0000000074B92000-0x0000000074B93000-memory.dmp
memory/5632-507-0x0000000004C70000-0x0000000004D30000-memory.dmp
memory/5632-509-0x0000000074B80000-0x000000007533C000-memory.dmp
memory/5632-508-0x000000002ABF0000-0x000000002B1AA000-memory.dmp
memory/5632-510-0x0000000004BE0000-0x0000000004C46000-memory.dmp
memory/5632-511-0x0000000074B80000-0x000000007533C000-memory.dmp
memory/5632-512-0x0000000074B80000-0x000000007533C000-memory.dmp
memory/5632-541-0x000000002B7B0000-0x000000002B972000-memory.dmp
memory/5632-544-0x000000002B980000-0x000000002BEAC000-memory.dmp
memory/5632-10-0x000000007FE90000-0x000000007FEA0000-memory.dmp
memory/5632-546-0x000000002C1B0000-0x000000002C226000-memory.dmp
memory/5632-550-0x0000000074B92000-0x0000000074B93000-memory.dmp
memory/5632-551-0x0000000074B80000-0x000000007533C000-memory.dmp
memory/5632-553-0x0000000074B80000-0x000000007533C000-memory.dmp
memory/5632-554-0x000000002D590000-0x000000002D5A2000-memory.dmp
memory/5632-557-0x000000002DA30000-0x000000002DAC2000-memory.dmp
memory/5632-558-0x000000002DB40000-0x000000002DB4A000-memory.dmp
memory/5632-9-0x000000007FE90000-0x000000007FEA0000-memory.dmp