General

  • Target
    09072026_0331_PO54321.exe.tar
  • Size 360KB
  • Sample260709-d53f4ac17s
  • SHA256 280a20319e536d3e2684c91b227cbacad271f6fe1bf55600682022dce959fa0c
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Extracted

Credentials
  • Protocol

    smtp

  • Host

    mail.holzbrenzii.com

  • Port

    587

  • Password

    boygirl123456

Extracted

Family
  • agenttesla

Credentials

Targets

    • Target
      PO #54321.exe
    • Size 350KB
    • SHA256 795fee999993e22fae8da87b93bb31177a8383a18b53e122cab3b42b6abaf5b8
    • MD5 SHA1 SHA512 SSDEEP TLSH
    • Family: AgentTesla

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

    • Loads dropped DLL

    • Reads WinSCP keys stored on the system

      Tries to access WinSCP stored sessions.

    • Reads data files stored by FTP clients

      Tries to access configuration files associated with programs like FileZilla.

    • Reads user/profile data of local email clients

      Email clients store some user data on disk where infostealers will often target it.

    • Reads user/profile data of web browsers

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

    • Accesses Microsoft Outlook profiles

    • Looks up external IP address via web service

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

    • Suspicious use of NtCreateThreadExHideFromDebugger

    • Suspicious use of NtSetInformationThreadHideFromDebugger

    • Target
      $PLUGINSDIR/System.dll
    • Size 12KB
    • SHA256 b7823a15e7b1866ba3d77248f750b66505859d264cfc39d8c8c5e812f8ae4a81
    • MD5 SHA1 SHA512 SSDEEP TLSH
    • Boot or Logon Autostart Execution: Active Setup

      Adversaries may achieve persistence by adding a Registry key to the Active Setup of the local machine.

    • Enumerates connected drives

      Attempts to read the root path of hard drives other than the default C: drive.

    • Target
      $PLUGINSDIR/nsDialogs.dll
    • Size 9KB
    • SHA256 48c290cf400a8e3a5e6cded2f4817d344c4d20745c8659cccbc09edad5866dc0
    • MD5 SHA1 SHA512 SSDEEP TLSH
    Score
    3/10

MITRE ATT&CK Enterprise v16

Tasks