Analysis
- max time kernel
149s - max time network
131s - platform
windows11-ltsc_2024_x64 - resource
win11ltsc2024-20260911-en - resource tags
- submitted
23/10/2026, 12:09
General
- Target startofflinejs.js
- Size 407KB
- Sample261023-pbx53axybv
- SHA256 b23121b5f4f6b9e3ddefe7c9b991eb6351e7d048bbc8eebd7b215d8c08792952
Malware Config
Extracted
-
agenttesla
-
Protocol
ftp
-
Host
ftp://ftp.darlenemarino.cyou
-
Port
21
-
Username
-
Password
AA22551100bb@@##
Signatures
- Family: AgentTesla
Agent Tesla is a remote access tool (RAT) written in visual basic.
- Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs
Run Powershell and hide display window.
- Creates a file in the Startup directory 1 TTPs 1 IoCs
A file was written to a Windows startup folder. Files in these directories are executed automatically when a user logs on or an application initializes.
- Accesses Microsoft Outlook profiles 1 TTPs 1 IoCs
- Adds Run key to start application 2 TTPs 2 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 SetThreadContext 1 IoCs
- Command and Scripting Interpreter: JavaScript 1 TTPs
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
- Reads the TCP/IP host and domain name from the registry 1 TTPs 2 IoCs
The configured hostname and DNS domain identify the machine and are commonly collected to profile a host before it reports in.
- 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.
- Modifies registry class 1 IoCs
- Suspicious behavior: EnumeratesProcesses 18 IoCs
- Suspicious use of AdjustPrivilegeToken 3 IoCs
- Suspicious use of WriteProcessMemory 6 IoCs
- outlook_office_path 1 IoCs
Processes
-
C:\Windows\system32\wscript.exewscript.exe C:\Users\Admin\AppData\Local\Temp\startofflinejs.js1⤵
- Creates a file in the Startup directory
- Adds Run key to start application
- Reads the TCP/IP host and domain name from the registry
- Modifies registry class
- Suspicious use of WriteProcessMemory
-
C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exepowershell.exe -ExecutionPolicy Bypass -NoProfile -WindowStyle Hidden -NonInteractive -NoLogo -File "C:\Temp\ps_9ZIkuQ7Hbvsx_1792757400229.ps1"2⤵
- Command and Scripting Interpreter: PowerShell
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
-
C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe"C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe"3⤵
- Accesses Microsoft Outlook profiles
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- outlook_office_path
-
-
-
C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exeC:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
Network
MITRE ATT&CK Enterprise v16
Privilege Escalation
Boot or Logon Autostart Execution
2Registry Run Keys / Startup Folder
2Replay Monitor
Loading Replay Monitor...
Downloads
ps_9ZIkuQ7Hbvsx_1792757400229.ps1
ModuleAnalysisCache
__PSScriptPolicyTest_ewj1m4om.rxl.psm1
memory/2496-14-0x00000166DEC40000-0x00000166DEC88000-memory.dmp
memory/2496-39-0x00007FF87DCB0000-0x00007FF87E654000-memory.dmp
memory/2496-38-0x00007FF87DCB0000-0x00007FF87E654000-memory.dmp
memory/2496-7-0x00000166C6700000-0x00000166C6722000-memory.dmp
memory/2496-24-0x00007FF87DCB0000-0x00007FF87E654000-memory.dmp
memory/2496-22-0x00007FF87DCB0000-0x00007FF87E654000-memory.dmp
memory/5224-21-0x00007FF87DCB0000-0x00007FF87E654000-memory.dmp
memory/5224-35-0x00007FF87DCB0000-0x00007FF87E654000-memory.dmp
memory/5224-16-0x00007FF87DCB0000-0x00007FF87E654000-memory.dmp
memory/5224-13-0x00007FF87DCB0000-0x00007FF87E654000-memory.dmp
memory/5224-18-0x00007FF87DCB0000-0x00007FF87E654000-memory.dmp
memory/5224-19-0x00007FF87DCB0000-0x00007FF87E654000-memory.dmp
memory/5224-20-0x00007FF87DCB0000-0x00007FF87E654000-memory.dmp
memory/5224-2-0x00007FF87DE3F000-0x00007FF87DE40000-memory.dmp
memory/5224-12-0x00007FF87DCB0000-0x00007FF87E654000-memory.dmp
memory/5224-23-0x00007FF87DCB0000-0x00007FF87E654000-memory.dmp
memory/5224-11-0x00007FF87DCB0000-0x00007FF87E654000-memory.dmp
memory/5224-25-0x000001B7C49A0000-0x000001B7C49B4000-memory.dmp
memory/5224-40-0x00007FF87DCB0000-0x00007FF87E654000-memory.dmp
memory/5224-3-0x00007FF87DCB0000-0x00007FF87E654000-memory.dmp
memory/5224-6-0x00007FF87DCB0000-0x00007FF87E654000-memory.dmp
memory/5224-37-0x00007FF87DCB0000-0x00007FF87E654000-memory.dmp
memory/5224-36-0x00007FF87DCB0000-0x00007FF87E654000-memory.dmp
memory/5224-15-0x00007FF87DCB0000-0x00007FF87E654000-memory.dmp
memory/5224-8-0x00007FF87DCB0000-0x00007FF87E654000-memory.dmp
memory/5520-31-0x0000000006C60000-0x0000000006C6A000-memory.dmp
memory/5520-30-0x0000000006D10000-0x0000000006D60000-memory.dmp
memory/5520-29-0x0000000006C70000-0x0000000006D02000-memory.dmp
memory/5520-28-0x0000000005980000-0x00000000059E6000-memory.dmp
memory/5520-27-0x0000000005E40000-0x00000000063FA000-memory.dmp
memory/5520-26-0x0000000000400000-0x0000000000442000-memory.dmp