Analysis

  • max time kernel
    141s
  • max time network
    135s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220414-en
  • submitted
    12/05/2022, 08:53

General

  • Target
    TELEX BI 14226INS00075.exe
  • Size 546KB
  • Sample220512-ktap9seecr
  • SHA256 9c18f7c761ef5854d1b3dd4b3176db9def2bd4b324f15aeffe4e995a1c6d5d79
  • MD5 SHA1 SHA512

Malware Config

Extracted

Credentials
  • Protocol

    smtp

  • Host

    mail.topfrozenfoodbrand.com

  • Port

    587

  • Password

    Everest10purch

Extracted

Family
  • agenttesla

Credentials

Signatures

  • AgentTesla

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

  • 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.

  • Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs
  • Suspicious use of SetThreadContext 1 IoCs
  • Program crash 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 8 IoCs
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\TELEX BI 14226INS00075.exe
    "C:\Users\Admin\AppData\Local\Temp\TELEX BI 14226INS00075.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:2136
    • C:\Users\Admin\AppData\Local\Temp\TELEX BI 14226INS00075.exe
      "C:\Users\Admin\AppData\Local\Temp\TELEX BI 14226INS00075.exe"
      2⤵
      • Drops file in Drivers directory
      • Accesses Microsoft Outlook profiles
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • outlook_office_path
      • outlook_win_path
      PID:5028
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -u -p 5028 -s 1932
        3⤵
        • Program crash
        PID:2300
  • C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -pss -s 416 -p 5028 -ip 5028
    1⤵
      PID:3800

    Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

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          Downloads

          memory/2136-130-0x0000000000610000-0x000000000069E000-memory.dmp

          memory/2136-131-0x0000000005770000-0x0000000005D14000-memory.dmp

          memory/2136-132-0x0000000005060000-0x00000000050F2000-memory.dmp

          memory/2136-133-0x00000000051C0000-0x000000000525C000-memory.dmp

          memory/2136-134-0x0000000005040000-0x000000000504A000-memory.dmp

          memory/2136-135-0x00000000077A0000-0x0000000007806000-memory.dmp

          memory/5028-137-0x0000000000400000-0x000000000043C000-memory.dmp

          memory/5028-138-0x00000000064C0000-0x0000000006510000-memory.dmp