Analysis

  • max time kernel
    62s
  • max time network
    45s
  • platform
    windows7_x64
  • resource
    win7
  • submitted
    07/07/2020, 09:22

General

  • Target

    Facturas Pagadas al Vencimiento.exe

  • Size

    725KB

  • MD5

    d7162719f0d49a1e9af4ce811b0b2b3e

  • SHA1

    387d361cc9e63027d3369e17ca614d554a1fd8a6

  • SHA256

    40bf310460d64734161febd3338325fe0153da4121fbd1b91d372a0ef1ee88b5

  • SHA512

    4fc039e1a6e30a3ec3f0bb0a67753cdd1278d9eeb73203196b7e7c0e32eb1b19bb0026ffff911b48d87edf83e05d7deb8562fd72df6d5149cc01dfdbe67894ed

Malware Config

Extracted

Family

agenttesla

Credentials

  • Protocol:
    smtp
  • Host:
    mail.gascuenca.es
  • Port:
    587
  • Username:
    [email protected]
  • Password:
    gasW203@Z7

Signatures

  • AgentTesla

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

  • AgentTesla Payload 4 IoCs
  • UPX packed file 3 IoCs

    Detects executables packed with UPX/modified UPX open source packer.

  • 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.

  • Suspicious use of SetThreadContext 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 10 IoCs
  • Suspicious behavior: MapViewOfSection 1 IoCs
  • Suspicious behavior: RenamesItself 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 12 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Facturas Pagadas al Vencimiento.exe
    "C:\Users\Admin\AppData\Local\Temp\Facturas Pagadas al Vencimiento.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious behavior: MapViewOfSection
    • Suspicious use of WriteProcessMemory
    PID:1104
    • C:\Users\Admin\AppData\Local\Temp\Facturas Pagadas al Vencimiento.exe
      "C:\Users\Admin\AppData\Local\Temp\Facturas Pagadas al Vencimiento.exe"
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious behavior: RenamesItself
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:1196
      • C:\Windows\SysWOW64\netsh.exe
        "netsh" wlan show profile
        3⤵
          PID:1092
      • C:\Users\Admin\AppData\Local\Temp\Facturas Pagadas al Vencimiento.exe
        "C:\Users\Admin\AppData\Local\Temp\Facturas Pagadas al Vencimiento.exe" 2 1196 63773
        2⤵
        • Suspicious behavior: EnumeratesProcesses
        PID:836

    Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          • memory/1196-0-0x0000000000400000-0x00000000004AC000-memory.dmp

            Filesize

            688KB

          • memory/1196-2-0x0000000000400000-0x00000000004AC000-memory.dmp

            Filesize

            688KB

          • memory/1196-3-0x0000000000400000-0x00000000004AC000-memory.dmp

            Filesize

            688KB

          • memory/1196-5-0x0000000000380000-0x00000000003D0000-memory.dmp

            Filesize

            320KB

          • memory/1196-6-0x00000000003E2000-0x00000000003E3000-memory.dmp

            Filesize

            4KB

          • memory/1196-7-0x0000000000220000-0x000000000026A000-memory.dmp

            Filesize

            296KB