Analysis
- max time kernel
148s - max time network
145s - platform
windows11-ltsc_2024_x64 - resource
win11ltsc2024-20260709-en - resource tags
- submitted
10/08/2026, 14:58
General
- Target Berkenhoff_89398463542.js
- Size 2.9MB
- Sample260810-sb6c8a1eng
- SHA256 c4b48e6278cdca79f408c93c61fcb0aa31fa8ec694ffccc338599c484b4793fb
Malware Config
Extracted
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agenttesla
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Protocol
smtp
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Host
mail.trimnt.com
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Port
587
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Username
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Password
s4=O8tsknbClU8b_
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Email to
Signatures
- Family: AgentTesla
Agent Tesla is a remote access tool (RAT) written in visual basic.
- Executes dropped EXE 1 IoCs
- Reads WinSCP keys stored on the system 2 TTPs
Tries to access WinSCP stored sessions.
- Reads data files stored by FTP clients 2 TTPs
Tries to access configuration files associated with programs like FileZilla.
- Reads user/profile data of local email clients 2 TTPs
Email clients store some user data on disk where infostealers will often target it.
- 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
- Looks up external IP address via web service 1 TTPs 1 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.
- Suspicious use of NtSetInformationThreadHideFromDebugger 2 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 2 IoCs
- Suspicious use of AdjustPrivilegeToken 2 IoCs
- Suspicious use of SetWindowsHookEx 1 IoCs
- Suspicious use of WriteProcessMemory 7 IoCs
- outlook_office_path 1 IoCs
Processes
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C:\Windows\system32\wscript.exewscript.exe C:\Users\Admin\AppData\Local\Temp\Berkenhoff_89398463542.js1⤵
- Modifies registry class
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\Documents\TDSBELTIMRUWCUNA.PIF"C:\Users\Admin\Documents\TDSBELTIMRUWCUNA.PIF" C:\Users\Admin\Documents\TDSBELTIMRUWCUNA.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 SetWindowsHookEx
- Suspicious use of WriteProcessMemory
- outlook_office_path
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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 "TDSBELTIMRUWCUNA" 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 "TDSBELTIMRUWCUNA"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 "TDSBELTIMRUWCUNA" /tr "cmd /c \"C:\Users\Admin\Documents\ANUCWURMITLEBSDT.url\"" /ru "yrwkjldu\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 "TDSBELTIMRUWCUNA" /tr "cmd /c \"C:\Users\Admin\Documents\ANUCWURMITLEBSDT.url\"" /ru "yrwkjldu\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
Execution
Command and Scripting Interpreter
2JavaScript
1Windows Command Shell
1Scheduled Task/Job
1Scheduled Task
1Credential Access
Credentials from Password Stores
1Credentials from Web Browsers
1Unsecured Credentials
4Credentials In Files
3Credentials in Registry
1Replay Monitor
Loading Replay Monitor...
Downloads
TDSBELTIMRUWCUNA.PIF
TDSBELTIMRUWCUNA.ttf
TDSBELTIMRUWCUNA.ubf
memory/1184-10-0x000000007FE90000-0x000000007FEA0000-memory.dmp
memory/1184-11-0x000000007FE90000-0x000000007FEA0000-memory.dmp
memory/1184-12-0x000000007FE90000-0x000000007FEA0000-memory.dmp
memory/1184-18-0x000000007FE90000-0x000000007FEA0000-memory.dmp
memory/1184-19-0x000000007FE90000-0x000000007FEA0000-memory.dmp
memory/1184-20-0x000000007FE90000-0x000000007FEA0000-memory.dmp
memory/1184-23-0x000000007FE90000-0x000000007FEA0000-memory.dmp
memory/1184-25-0x000000007FE90000-0x000000007FEA0000-memory.dmp
memory/1184-24-0x000000007FE90000-0x000000007FEA0000-memory.dmp
memory/1184-22-0x0000000002640000-0x0000000002641000-memory.dmp
memory/1184-21-0x0000000002630000-0x0000000002631000-memory.dmp
memory/1184-17-0x000000007FE90000-0x000000007FEA0000-memory.dmp
memory/1184-16-0x0000000002460000-0x0000000002461000-memory.dmp
memory/1184-59-0x000000007FE90000-0x000000007FEA0000-memory.dmp
memory/1184-62-0x000000007FE90000-0x000000007FEA0000-memory.dmp
memory/1184-76-0x000000007FE90000-0x000000007FEA0000-memory.dmp
memory/1184-75-0x000000007FE90000-0x000000007FEA0000-memory.dmp
memory/1184-74-0x000000007FE90000-0x000000007FEA0000-memory.dmp
memory/1184-73-0x000000007FE90000-0x000000007FEA0000-memory.dmp
memory/1184-72-0x000000007FE90000-0x000000007FEA0000-memory.dmp
memory/1184-71-0x000000007FE90000-0x000000007FEA0000-memory.dmp
memory/1184-70-0x000000007FE90000-0x000000007FEA0000-memory.dmp
memory/1184-69-0x000000007FE90000-0x000000007FEA0000-memory.dmp
memory/1184-68-0x000000007FE90000-0x000000007FEA0000-memory.dmp
memory/1184-67-0x000000007FE90000-0x000000007FEA0000-memory.dmp
memory/1184-66-0x000000007FE90000-0x000000007FEA0000-memory.dmp
memory/1184-65-0x000000007FE90000-0x000000007FEA0000-memory.dmp
memory/1184-64-0x000000007FE90000-0x000000007FEA0000-memory.dmp
memory/1184-63-0x000000007FE90000-0x000000007FEA0000-memory.dmp
memory/1184-61-0x000000007FE90000-0x000000007FEA0000-memory.dmp
memory/1184-58-0x000000007FE90000-0x000000007FEA0000-memory.dmp
memory/1184-57-0x000000007FE90000-0x000000007FEA0000-memory.dmp
memory/1184-56-0x000000007FE90000-0x000000007FEA0000-memory.dmp
memory/1184-55-0x000000007FE90000-0x000000007FEA0000-memory.dmp
memory/1184-54-0x000000007FE90000-0x000000007FEA0000-memory.dmp
memory/1184-53-0x000000007FE90000-0x000000007FEA0000-memory.dmp
memory/1184-52-0x000000007FE90000-0x000000007FEA0000-memory.dmp
memory/1184-51-0x000000007FE90000-0x000000007FEA0000-memory.dmp
memory/1184-50-0x000000007FE90000-0x000000007FEA0000-memory.dmp
memory/1184-49-0x000000007FE90000-0x000000007FEA0000-memory.dmp
memory/1184-48-0x000000007FE90000-0x000000007FEA0000-memory.dmp
memory/1184-47-0x000000007FE90000-0x000000007FEA0000-memory.dmp
memory/1184-41-0x000000007FE90000-0x000000007FEA0000-memory.dmp
memory/1184-40-0x000000007FE90000-0x000000007FEA0000-memory.dmp
memory/1184-39-0x000000007FE90000-0x000000007FEA0000-memory.dmp
memory/1184-38-0x000000007FE90000-0x000000007FEA0000-memory.dmp
memory/1184-37-0x000000007FE90000-0x000000007FEA0000-memory.dmp
memory/1184-36-0x000000007FE90000-0x000000007FEA0000-memory.dmp
memory/1184-35-0x000000007FE90000-0x000000007FEA0000-memory.dmp
memory/1184-34-0x000000007FE90000-0x000000007FEA0000-memory.dmp
memory/1184-33-0x000000007FE90000-0x000000007FEA0000-memory.dmp
memory/1184-60-0x000000007FE90000-0x000000007FEA0000-memory.dmp
memory/1184-46-0x000000007FE90000-0x000000007FEA0000-memory.dmp
memory/1184-45-0x000000007FE90000-0x000000007FEA0000-memory.dmp
memory/1184-44-0x000000007FE90000-0x000000007FEA0000-memory.dmp
memory/1184-43-0x000000007FE90000-0x000000007FEA0000-memory.dmp
memory/1184-42-0x000000007FE90000-0x000000007FEA0000-memory.dmp
memory/1184-32-0x000000007FE90000-0x000000007FEA0000-memory.dmp
memory/1184-31-0x000000007FE90000-0x000000007FEA0000-memory.dmp
memory/1184-30-0x000000007FE90000-0x000000007FEA0000-memory.dmp
memory/1184-29-0x000000007FE90000-0x000000007FEA0000-memory.dmp
memory/1184-28-0x000000007FE90000-0x000000007FEA0000-memory.dmp
memory/1184-27-0x000000007FE90000-0x000000007FEA0000-memory.dmp
memory/1184-26-0x000000007FE90000-0x000000007FEA0000-memory.dmp
memory/1184-263-0x0000000003AC0000-0x0000000003B04000-memory.dmp
memory/1184-264-0x000000002A3F0000-0x000000002A9AA000-memory.dmp
memory/1184-265-0x000000002A210000-0x000000002A276000-memory.dmp
memory/1184-268-0x000000002B750000-0x000000002B7A0000-memory.dmp
memory/1184-269-0x000000002B820000-0x000000002B8B2000-memory.dmp
memory/1184-270-0x000000002B910000-0x000000002B91A000-memory.dmp