Analysis

  • max time kernel
    140s
  • max time network
    46s
  • platform
    windows7_x64
  • resource
    win7-20220414-en
  • submitted
    20-05-2022 22:14

General

  • Target

    PO.exe

  • Size

    629KB

  • MD5

    80a403850f764cd5b6b6ca7815d1eef8

  • SHA1

    bd52782526e783fe7786e4cef0f169264c1b117d

  • SHA256

    1414f24264a3c0579250f74acdbb4ffffc79cf787221704b80cdab5829212bff

  • SHA512

    3d4eb72ccb52bea0c05f87885a1b054f294c1e40292aec9d7c09680c20ed4336e0645fefe4b586139642f16022e67cd9d7b62f4e69b00343e1b92cd30c8e9b69

Malware Config

Extracted

Family

agenttesla

Credentials

  • Protocol:
    smtp
  • Host:
    us2.smtp.mailhostbox.com
  • Port:
    587
  • Username:
    [email protected]
  • Password:
    Wm^kN*!7

Signatures

  • AgentTesla

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

  • AgentTesla Payload 6 IoCs
  • 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
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

  • Creates scheduled task(s) 1 TTPs 1 IoCs

    Schtasks is often used by malware for persistence or to perform post-infection execution.

  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 13 IoCs
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\PO.exe
    "C:\Users\Admin\AppData\Local\Temp\PO.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:2020
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\OgmEfPUTiwiF" /XML "C:\Users\Admin\AppData\Local\Temp\tmp931C.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:1692
    • C:\Users\Admin\AppData\Local\Temp\PO.exe
      "{path}"
      2⤵
      • Accesses Microsoft Outlook profiles
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of SetWindowsHookEx
      • outlook_office_path
      • outlook_win_path
      PID:1648

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Local\Temp\tmp931C.tmp

    Filesize

    1KB

    MD5

    03decc1c99801e5428d14eae2e987930

    SHA1

    1285e6beb3fae25cb2999d5a80923ca061283f73

    SHA256

    40d9ec688fd75543d59fe497943d3113b6b252464ab295fcefbf5ed0a2ef90b7

    SHA512

    c5fae38eb09c81d113bf40da1293d0522bd0b9a0b1688e81d2a9b639f4932fe0b16f7e699e729649dd1aa912c2025ae26f90babfd4c9c3c8df64506d1a801e6a

  • memory/1648-64-0x0000000000400000-0x000000000044C000-memory.dmp

    Filesize

    304KB

  • memory/1648-60-0x0000000000400000-0x000000000044C000-memory.dmp

    Filesize

    304KB

  • memory/1648-61-0x0000000000400000-0x000000000044C000-memory.dmp

    Filesize

    304KB

  • memory/1648-63-0x0000000000400000-0x000000000044C000-memory.dmp

    Filesize

    304KB

  • memory/1648-65-0x0000000000400000-0x000000000044C000-memory.dmp

    Filesize

    304KB

  • memory/1648-66-0x00000000004469FE-mapping.dmp

  • memory/1648-68-0x0000000000400000-0x000000000044C000-memory.dmp

    Filesize

    304KB

  • memory/1648-70-0x0000000000400000-0x000000000044C000-memory.dmp

    Filesize

    304KB

  • memory/1692-58-0x0000000000000000-mapping.dmp

  • memory/2020-56-0x0000000001FA0000-0x0000000001FF4000-memory.dmp

    Filesize

    336KB

  • memory/2020-57-0x00000000755C1000-0x00000000755C3000-memory.dmp

    Filesize

    8KB

  • memory/2020-55-0x0000000000700000-0x0000000000708000-memory.dmp

    Filesize

    32KB

  • memory/2020-54-0x00000000008A0000-0x0000000000944000-memory.dmp

    Filesize

    656KB