Analysis

  • max time kernel
    144s
  • max time network
    25s
  • platform
    windows7_x64
  • resource
    win7v200430
  • submitted
    09-07-2020 07:31

General

  • Target

    PO090720.exe

  • Size

    561KB

  • MD5

    e3dc6af740db619de8c9f0af0fec145f

  • SHA1

    ca6e645af9f9bbee4bd2dc98814c5ef7a4ed716d

  • SHA256

    7f5082ea80243bb25ddcddc3289e2f973e858bb53716a75318bfc4848cfdccd7

  • SHA512

    cc1265b888d9f75708a7cdc0088fa662b1a46bfd076e4be0b5d5bfbb641c4e843e940612e1dff6d4d08e4b48d85ffc21dd7f84f0071988b4c20ba6e2b3dfff73

Malware Config

Extracted

Family

agenttesla

Credentials

  • Protocol:
    smtp
  • Host:
    mail.privateemail.com
  • Port:
    587
  • Username:
    [email protected]
  • Password:
    mmm777

Signatures

  • AgentTesla

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

  • AgentTesla Payload 4 IoCs
  • Drops file in Drivers directory 1 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.

  • 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

Processes

  • C:\Users\Admin\AppData\Local\Temp\PO090720.exe
    "C:\Users\Admin\AppData\Local\Temp\PO090720.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:240
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\HrOQxgepk" /XML "C:\Users\Admin\AppData\Local\Temp\tmp5456.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:1856
    • C:\Users\Admin\AppData\Local\Temp\PO090720.exe
      "{path}"
      2⤵
      • Drops file in Drivers directory
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of SetWindowsHookEx
      PID:1896

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\tmp5456.tmp

    MD5

    d54797639cead93f57b579a96e0e38a8

    SHA1

    8731a568fc60ee61813372da7fd8ba6321a4c933

    SHA256

    85e99bd7aaa593d1a9f50e0702b866b90f56678e332d91fd351c77321b833e17

    SHA512

    e3cd5d1f51f3134cd52bfe4adca99402f3272c7755537e5add2fb135aa8cafa8255955109737ef9cd6ca2dfd039647ccd3658db8480e4ebd4359c2b3e8fd1631

  • memory/1856-0-0x0000000000000000-mapping.dmp

  • memory/1896-2-0x0000000000400000-0x000000000044C000-memory.dmp

    Filesize

    304KB

  • memory/1896-3-0x00000000004474CE-mapping.dmp

  • memory/1896-4-0x0000000000400000-0x000000000044C000-memory.dmp

    Filesize

    304KB

  • memory/1896-5-0x0000000000400000-0x000000000044C000-memory.dmp

    Filesize

    304KB