Analysis

  • max time kernel
    125s
  • max time network
    126s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240419-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240419-enlocale:en-usos:windows10-2004-x64system
  • submitted
    03/05/2024, 13:08

General

  • Target

    document.XLSxm.exe

  • Size

    2.2MB

  • MD5

    8c8eb8a5f4a10cb4ec685e3c00e55236

  • SHA1

    515f359f2280ca1274357a79f6eaa5c2617ad06d

  • SHA256

    fa5e0fa6c5ad1d8b07047591ab54b91b8d1f152a43b0f9df0d3acea792f012a3

  • SHA512

    891faaddf8225de5c0d0190b5231dcec368417fb5c43df66feb45a412611f0d75032c93f1061ff94bc2aa295c2645d47fd4c4da4c89f95d4bc829674a5daf633

  • SSDEEP

    49152:uSEOK4/mJ0D7nZiHq5/E7rcivg4GedSUcrAkcF0DsJKvejIPHlE+m+:0qBZiHqxwfgDTaF0AJKGjI9EV

Malware Config

Extracted

Family

agenttesla

Credentials

Signatures

  • AgentTesla

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

  • Detect ZGRat V1 34 IoCs
  • ZGRat

    ZGRat is remote access trojan written in C#.

  • 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 2 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

  • Adds Run key to start application 2 TTPs 2 IoCs
  • Looks up external IP address via web service 2 IoCs

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

  • Suspicious use of SetThreadContext 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 8 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\document.XLSxm.exe
    "C:\Users\Admin\AppData\Local\Temp\document.XLSxm.exe"
    1⤵
    • Adds Run key to start application
    • Suspicious use of SetThreadContext
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2336
    • C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
      "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"
      2⤵
      • Adds Run key to start application
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of SetWindowsHookEx
      PID:1888

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        • memory/1888-4896-0x0000000074730000-0x0000000074EE0000-memory.dmp

          Filesize

          7.7MB

        • memory/1888-4897-0x0000000000700000-0x0000000000742000-memory.dmp

          Filesize

          264KB

        • memory/1888-4898-0x0000000004D60000-0x0000000004DC6000-memory.dmp

          Filesize

          408KB

        • memory/1888-4899-0x0000000074730000-0x0000000074EE0000-memory.dmp

          Filesize

          7.7MB

        • memory/1888-4901-0x0000000006060000-0x00000000060B0000-memory.dmp

          Filesize

          320KB

        • memory/1888-4903-0x0000000074730000-0x0000000074EE0000-memory.dmp

          Filesize

          7.7MB

        • memory/1888-4902-0x00000000062E0000-0x00000000062EA000-memory.dmp

          Filesize

          40KB

        • memory/2336-38-0x00000000055F0000-0x000000000581B000-memory.dmp

          Filesize

          2.2MB

        • memory/2336-28-0x00000000055F0000-0x000000000581B000-memory.dmp

          Filesize

          2.2MB

        • memory/2336-4-0x0000000005950000-0x00000000059E2000-memory.dmp

          Filesize

          584KB

        • memory/2336-30-0x00000000055F0000-0x000000000581B000-memory.dmp

          Filesize

          2.2MB

        • memory/2336-34-0x00000000055F0000-0x000000000581B000-memory.dmp

          Filesize

          2.2MB

        • memory/2336-60-0x00000000055F0000-0x000000000581B000-memory.dmp

          Filesize

          2.2MB

        • memory/2336-68-0x00000000055F0000-0x000000000581B000-memory.dmp

          Filesize

          2.2MB

        • memory/2336-66-0x00000000055F0000-0x000000000581B000-memory.dmp

          Filesize

          2.2MB

        • memory/2336-64-0x00000000055F0000-0x000000000581B000-memory.dmp

          Filesize

          2.2MB

        • memory/2336-62-0x00000000055F0000-0x000000000581B000-memory.dmp

          Filesize

          2.2MB

        • memory/2336-58-0x00000000055F0000-0x000000000581B000-memory.dmp

          Filesize

          2.2MB

        • memory/2336-56-0x00000000055F0000-0x000000000581B000-memory.dmp

          Filesize

          2.2MB

        • memory/2336-54-0x00000000055F0000-0x000000000581B000-memory.dmp

          Filesize

          2.2MB

        • memory/2336-50-0x00000000055F0000-0x000000000581B000-memory.dmp

          Filesize

          2.2MB

        • memory/2336-48-0x00000000055F0000-0x000000000581B000-memory.dmp

          Filesize

          2.2MB

        • memory/2336-46-0x00000000055F0000-0x000000000581B000-memory.dmp

          Filesize

          2.2MB

        • memory/2336-44-0x00000000055F0000-0x000000000581B000-memory.dmp

          Filesize

          2.2MB

        • memory/2336-42-0x00000000055F0000-0x000000000581B000-memory.dmp

          Filesize

          2.2MB

        • memory/2336-40-0x00000000055F0000-0x000000000581B000-memory.dmp

          Filesize

          2.2MB

        • memory/2336-2-0x00000000055F0000-0x0000000005820000-memory.dmp

          Filesize

          2.2MB

        • memory/2336-36-0x00000000055F0000-0x000000000581B000-memory.dmp

          Filesize

          2.2MB

        • memory/2336-32-0x00000000055F0000-0x000000000581B000-memory.dmp

          Filesize

          2.2MB

        • memory/2336-52-0x00000000055F0000-0x000000000581B000-memory.dmp

          Filesize

          2.2MB

        • memory/2336-3-0x0000000005E00000-0x00000000063A4000-memory.dmp

          Filesize

          5.6MB

        • memory/2336-26-0x00000000055F0000-0x000000000581B000-memory.dmp

          Filesize

          2.2MB

        • memory/2336-24-0x00000000055F0000-0x000000000581B000-memory.dmp

          Filesize

          2.2MB

        • memory/2336-22-0x00000000055F0000-0x000000000581B000-memory.dmp

          Filesize

          2.2MB

        • memory/2336-20-0x00000000055F0000-0x000000000581B000-memory.dmp

          Filesize

          2.2MB

        • memory/2336-18-0x00000000055F0000-0x000000000581B000-memory.dmp

          Filesize

          2.2MB

        • memory/2336-16-0x00000000055F0000-0x000000000581B000-memory.dmp

          Filesize

          2.2MB

        • memory/2336-14-0x00000000055F0000-0x000000000581B000-memory.dmp

          Filesize

          2.2MB

        • memory/2336-12-0x00000000055F0000-0x000000000581B000-memory.dmp

          Filesize

          2.2MB

        • memory/2336-10-0x00000000055F0000-0x000000000581B000-memory.dmp

          Filesize

          2.2MB

        • memory/2336-8-0x00000000055F0000-0x000000000581B000-memory.dmp

          Filesize

          2.2MB

        • memory/2336-6-0x00000000055F0000-0x000000000581B000-memory.dmp

          Filesize

          2.2MB

        • memory/2336-5-0x00000000055F0000-0x000000000581B000-memory.dmp

          Filesize

          2.2MB

        • memory/2336-4885-0x0000000074730000-0x0000000074EE0000-memory.dmp

          Filesize

          7.7MB

        • memory/2336-4886-0x0000000074730000-0x0000000074EE0000-memory.dmp

          Filesize

          7.7MB

        • memory/2336-4887-0x0000000005530000-0x000000000559C000-memory.dmp

          Filesize

          432KB

        • memory/2336-1-0x0000000000910000-0x0000000000B50000-memory.dmp

          Filesize

          2.2MB

        • memory/2336-0-0x000000007473E000-0x000000007473F000-memory.dmp

          Filesize

          4KB

        • memory/2336-4888-0x00000000055A0000-0x00000000055EC000-memory.dmp

          Filesize

          304KB

        • memory/2336-4889-0x000000007473E000-0x000000007473F000-memory.dmp

          Filesize

          4KB

        • memory/2336-4890-0x0000000074730000-0x0000000074EE0000-memory.dmp

          Filesize

          7.7MB

        • memory/2336-4891-0x0000000000F20000-0x0000000000F74000-memory.dmp

          Filesize

          336KB

        • memory/2336-4895-0x0000000074730000-0x0000000074EE0000-memory.dmp

          Filesize

          7.7MB