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Analysis

  • max time kernel
    121s
  • max time network
    125s
  • platform
    windows7_x64
  • resource
    win7-20240508-en
  • resource tags

    arch:x64arch:x86image:win7-20240508-enlocale:en-usos:windows7-x64system
  • submitted
    09/05/2024, 02:23

General

  • Target

    ff60bbf5cb211f593bcc6297cf57eb5aca69a26bb8f59a59a5f9e98c4576b69e.exe

  • Size

    538KB

  • MD5

    81d4a6a1d18c240c26756635809b682c

  • SHA1

    b1c0cbc2c15ddc742f9be31123aa074f5762cf1b

  • SHA256

    ff60bbf5cb211f593bcc6297cf57eb5aca69a26bb8f59a59a5f9e98c4576b69e

  • SHA512

    4b710b2f514845ca990c98338db7881e59101d5f709538ecd8c14b0c9e5c69895a76e5acd6e31d0f12ed8ec253ce1b61a57dda662d0c663fe83297984b67b39a

  • SSDEEP

    12288:bU0+AzBAeB1hMqKvCUaJ1Cu18cSYsK8jWRPUS:1+Af/7Yu1vsnjI7

Malware Config

Extracted

Family

agenttesla

Credentials

  • Protocol:
    ftp
  • Host:
    ftp://ftp.svetigeorgije.co.rs
  • Port:
    21
  • Username:
    [email protected]
  • Password:
    4c5H&b2whkD9

Signatures

  • AgentTesla

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

  • Detect packed .NET executables. Mostly AgentTeslaV4. 5 IoCs
  • Detects executables packed with or use KoiVM 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 2 TTPs

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

  • Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs
  • Suspicious use of SetThreadContext 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 19 IoCs
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\ff60bbf5cb211f593bcc6297cf57eb5aca69a26bb8f59a59a5f9e98c4576b69e.exe
    "C:\Users\Admin\AppData\Local\Temp\ff60bbf5cb211f593bcc6297cf57eb5aca69a26bb8f59a59a5f9e98c4576b69e.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:2188
    • C:\Windows\Microsoft.NET\Framework\v4.0.30319\AddInProcess32.exe
      "C:\Windows\Microsoft.NET\Framework\v4.0.30319\AddInProcess32.exe"
      2⤵
        PID:2416
      • C:\Windows\Microsoft.NET\Framework\v4.0.30319\regasm.exe
        "C:\Windows\Microsoft.NET\Framework\v4.0.30319\regasm.exe"
        2⤵
        • Accesses Microsoft Outlook profiles
        • Suspicious use of AdjustPrivilegeToken
        • outlook_office_path
        • outlook_win_path
        PID:2576
      • C:\Windows\system32\WerFault.exe
        C:\Windows\system32\WerFault.exe -u -p 2188 -s 668
        2⤵
          PID:2632

      Network

      MITRE ATT&CK Enterprise v15

      Replay Monitor

      Loading Replay Monitor...

      Downloads

      • memory/2188-0-0x000007FEF5673000-0x000007FEF5674000-memory.dmp

        Filesize

        4KB

      • memory/2188-1-0x00000000002A0000-0x00000000002AA000-memory.dmp

        Filesize

        40KB

      • memory/2188-2-0x000007FEF5670000-0x000007FEF605C000-memory.dmp

        Filesize

        9.9MB

      • memory/2188-3-0x0000000002040000-0x00000000020C4000-memory.dmp

        Filesize

        528KB

      • memory/2188-19-0x000007FEF5670000-0x000007FEF605C000-memory.dmp

        Filesize

        9.9MB

      • memory/2188-18-0x000007FEF5673000-0x000007FEF5674000-memory.dmp

        Filesize

        4KB

      • memory/2576-11-0x0000000000400000-0x0000000000430000-memory.dmp

        Filesize

        192KB

      • memory/2576-13-0x0000000000400000-0x0000000000430000-memory.dmp

        Filesize

        192KB

      • memory/2576-8-0x0000000000400000-0x0000000000430000-memory.dmp

        Filesize

        192KB

      • memory/2576-6-0x0000000000400000-0x0000000000430000-memory.dmp

        Filesize

        192KB

      • memory/2576-4-0x0000000000400000-0x0000000000430000-memory.dmp

        Filesize

        192KB

      • memory/2576-17-0x0000000000400000-0x0000000000430000-memory.dmp

        Filesize

        192KB

      • memory/2576-12-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

        Filesize

        4KB

      • memory/2576-15-0x0000000000400000-0x0000000000430000-memory.dmp

        Filesize

        192KB