Analysis
- max time kernel
148s - max time network
140s - platform
windows11-ltsc_2024_x64 - resource
win11ltsc2024-20260911-en - resource tags
- submitted
23/10/2026, 12:09
General
- Target startonlinejs.js
- Size 84KB
- Sample261023-pbx53axybv
- SHA256 b48b2ea769e8c20756804cb3ddff8db12e232c1cda07356b2af27b9d3bfc7dc0
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.
- Badlisted process makes network request 1 IoCs
Network request originating from process or tool commonly abused by malware.
- 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 SetThreadContext 1 IoCs
- Command and Scripting Interpreter: JavaScript 1 TTPs
- Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs
Using powershell.exe command.
- 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 1 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.
- Suspicious behavior: EnumeratesProcesses 34 IoCs
- Suspicious use of AdjustPrivilegeToken 2 IoCs
- Suspicious use of WriteProcessMemory 6 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.
- outlook_office_path 1 IoCs
Processes
-
C:\Windows\system32\wscript.exewscript.exe C:\Users\Admin\AppData\Local\Temp\startonlinejs.js1⤵
- Badlisted process makes network request
- Reads the TCP/IP host and domain name from the registry
- Suspicious use of WriteProcessMemory
-
C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -nop -ep bypass -file "C:\Temp\MXVZADYUXI.ps1"2⤵
- Suspicious use of SetThreadContext
- Command and Scripting Interpreter: PowerShell
- 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
-
-
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
MXVZADYUXI.ps1
__PSScriptPolicyTest_zgrrwxik.p5n.ps1
memory/4864-19-0x00007FF8C5F20000-0x00007FF8C68C4000-memory.dmp
memory/4864-8-0x00007FF8C5F20000-0x00007FF8C68C4000-memory.dmp
memory/4864-11-0x00007FF8C5F20000-0x00007FF8C68C4000-memory.dmp
memory/4864-12-0x00007FF8C5F20000-0x00007FF8C68C4000-memory.dmp
memory/4864-13-0x00007FF8C5F20000-0x00007FF8C68C4000-memory.dmp
memory/4864-14-0x00007FF8C5F20000-0x00007FF8C68C4000-memory.dmp
memory/4864-20-0x00007FF8C5F20000-0x00007FF8C68C4000-memory.dmp
memory/4864-15-0x00007FF8C5F20000-0x00007FF8C68C4000-memory.dmp
memory/4864-17-0x00007FF8C5F20000-0x00007FF8C68C4000-memory.dmp
memory/4864-18-0x00007FF8C5F20000-0x00007FF8C68C4000-memory.dmp
memory/4864-9-0x00000169EF840000-0x00000169EF862000-memory.dmp
memory/4864-2-0x00007FF8C60AF000-0x00007FF8C60B0000-memory.dmp
memory/4864-32-0x00007FF8C5F20000-0x00007FF8C68C4000-memory.dmp
memory/4864-22-0x00007FF8C5F20000-0x00007FF8C68C4000-memory.dmp
memory/4864-23-0x00000169EF830000-0x00000169EF846000-memory.dmp
memory/4864-31-0x00007FF8C5F20000-0x00007FF8C68C4000-memory.dmp
memory/4864-21-0x00007FF8C5F20000-0x00007FF8C68C4000-memory.dmp
memory/4864-30-0x00007FF8C5F20000-0x00007FF8C68C4000-memory.dmp
memory/5916-27-0x0000000006E90000-0x0000000006F22000-memory.dmp
memory/5916-28-0x0000000006F30000-0x0000000006F80000-memory.dmp
memory/5916-29-0x0000000006E80000-0x0000000006E8A000-memory.dmp
memory/5916-26-0x0000000005BA0000-0x0000000005C06000-memory.dmp
memory/5916-24-0x0000000000400000-0x0000000000442000-memory.dmp
memory/5916-25-0x0000000006160000-0x000000000671A000-memory.dmp