Analysis

  • max time kernel
    98s
  • max time network
    103s
  • platform
    windows11-21h2_x64
  • resource
    win11-20250502-en
  • resource tags

    arch:x64arch:x86image:win11-20250502-enlocale:en-usos:windows11-21h2-x64system
  • submitted
    19/05/2025, 06:36

General

  • Target
    libbz2-1.dll
  • Size 3.3MB
  • Sample250519-hc2rbatm16
  • SHA256 cfe3100ff8dfe286be11b889ec8ca0a14211d56651469114ee5f440d8ff3e5a6
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Extracted

Family
  • agenttesla

Credentials
  • Protocol

    ftp

  • Host

    ftp://ftp.pxapas.com

  • Port

    21

  • Password

    ENDÜSTRÝ24-a0POL9

Signatures

  • AgentTesla

    Agent Tesla is a remote access tool (RAT) written in visual basic.

  • Agenttesla family
  • Looks up external IP address via web service 1 IoCs

    Uses a legitimate IP lookup service to find the infected system's external IP.

  • Suspicious use of SetThreadContext 1 IoCs
  • 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 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 8 IoCs

Processes

  • C:\Windows\system32\rundll32.exe
    rundll32.exe C:\Users\Admin\AppData\Local\Temp\libbz2-1.dll,#1
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:3540
    • C:\Windows\Microsoft.NET\Framework\v4.0.30319\AddInProcess32.exe
      "C:\Windows\Microsoft.NET\Framework\v4.0.30319\AddInProcess32.exe"
      2⤵
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:4876

Network

        MITRE ATT&CK Enterprise v16

        Replay Monitor

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        Downloads

        memory/4876-0-0x0000000000400000-0x0000000000442000-memory.dmp

        memory/4876-1-0x00000000745DE000-0x00000000745DF000-memory.dmp

        memory/4876-2-0x00000000057E0000-0x0000000005D86000-memory.dmp

        memory/4876-3-0x00000000053A0000-0x0000000005406000-memory.dmp

        memory/4876-4-0x00000000745D0000-0x0000000074D81000-memory.dmp

        memory/4876-5-0x0000000006530000-0x0000000006580000-memory.dmp

        memory/4876-6-0x0000000006620000-0x00000000066B2000-memory.dmp

        memory/4876-7-0x00000000065A0000-0x00000000065AA000-memory.dmp

        memory/4876-8-0x00000000745DE000-0x00000000745DF000-memory.dmp

        memory/4876-9-0x00000000745D0000-0x0000000074D81000-memory.dmp