Analysis

  • max time kernel
    99s
  • max time network
    29s
  • platform
    windows7_x64
  • resource
    win7
  • submitted
    24/06/2020, 13:14

General

  • Target
    PRINCESS HOUSE SDN BHD RFQ_xls.exe
  • Size 480KB
  • Sample200624-gbphbcdm8e
  • SHA256 4067a7bbd1a542f2d386e5bc991bb5573f0d637efd8a172af6e928a409e04359
  • MD5 SHA1 SHA512

Malware Config

Extracted

Family
  • agenttesla

Credentials
  • Protocol

    smtp

  • Host

    mail.newvenna121llc.com

  • Port

    587

  • Password

    fardin09123405057

Signatures

  • AgentTesla

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

  • AgentTesla Payload 4 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.

  • Modifies registry key 1 TTPs 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 3 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 21 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\PRINCESS HOUSE SDN BHD RFQ_xls.exe
    "C:\Users\Admin\AppData\Local\Temp\PRINCESS HOUSE SDN BHD RFQ_xls.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1496
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\iRSHGfVxXmWA" /XML "C:\Users\Admin\AppData\Local\Temp\tmpD567.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:1920
    • C:\Users\Admin\AppData\Local\Temp\PRINCESS HOUSE SDN BHD RFQ_xls.exe
      "{path}"
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:1952
      • C:\Windows\SysWOW64\REG.exe
        REG add HKCU\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer /v NoRun /t REG_DWORD /d 1 /f
        3⤵
        • Modifies registry key
        PID:1560
      • C:\Windows\SysWOW64\netsh.exe
        "netsh" wlan show profile
        3⤵
          PID:240

    Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

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          Downloads

          memory/1952-4-0x0000000000400000-0x0000000000452000-memory.dmp

          memory/1952-6-0x0000000000400000-0x0000000000452000-memory.dmp

          memory/1952-7-0x0000000000400000-0x0000000000452000-memory.dmp