Analysis

  • max time kernel
    138s
  • max time network
    39s
  • platform
    windows7_x64
  • resource
    win7-20220414-en
  • submitted
    20-05-2022 22:26

General

  • Target

    Norstar Baltic - Q88.exe

  • Size

    720KB

  • MD5

    09e36a44827320de0eb19fc0b1a91f61

  • SHA1

    6c5c259788e531ca18fabcd5c3ed9db3f9ed8600

  • SHA256

    f5a3632e4dc565def5e2a0e015931fd3bca1c19e1045044429bbe3912422e32b

  • SHA512

    7a6c42a9c65cf7d8bfa5540824db07dd6cf125f85afc34833fa39cca63ac6783b06fe1ee26a2ddb0a3768c5a60b979b3719fa70d98906190ca56961c1d8525af

Malware Config

Extracted

Family

agenttesla

Credentials

  • Protocol:
    smtp
  • Host:
    mail.maihyundai.com
  • Port:
    587
  • Username:
    [email protected]
  • Password:
    isla44332211

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
  • Adds Run key to start application 2 TTPs 1 IoCs
  • Suspicious use of SetThreadContext 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 5 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 13 IoCs
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Norstar Baltic - Q88.exe
    "C:\Users\Admin\AppData\Local\Temp\Norstar Baltic - Q88.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1620
    • C:\Users\Admin\AppData\Local\Temp\Norstar Baltic - Q88.exe
      "{path}"
      2⤵
        PID:1720
      • C:\Users\Admin\AppData\Local\Temp\Norstar Baltic - Q88.exe
        "{path}"
        2⤵
        • Accesses Microsoft Outlook profiles
        • Adds Run key to start application
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        • outlook_office_path
        • outlook_win_path
        PID:1736

    Network

    MITRE ATT&CK Enterprise v6

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • memory/1620-54-0x00000000000D0000-0x000000000018A000-memory.dmp

      Filesize

      744KB

    • memory/1620-55-0x0000000000230000-0x000000000023A000-memory.dmp

      Filesize

      40KB

    • memory/1620-56-0x0000000004BD0000-0x0000000004C52000-memory.dmp

      Filesize

      520KB

    • memory/1620-57-0x0000000005520000-0x00000000055A4000-memory.dmp

      Filesize

      528KB

    • memory/1736-58-0x0000000000400000-0x0000000000466000-memory.dmp

      Filesize

      408KB

    • memory/1736-59-0x0000000000400000-0x0000000000466000-memory.dmp

      Filesize

      408KB

    • memory/1736-61-0x0000000000400000-0x0000000000466000-memory.dmp

      Filesize

      408KB

    • memory/1736-62-0x0000000000400000-0x0000000000466000-memory.dmp

      Filesize

      408KB

    • memory/1736-64-0x0000000000460D4E-mapping.dmp

    • memory/1736-63-0x0000000000400000-0x0000000000466000-memory.dmp

      Filesize

      408KB

    • memory/1736-66-0x0000000000400000-0x0000000000466000-memory.dmp

      Filesize

      408KB

    • memory/1736-68-0x0000000000400000-0x0000000000466000-memory.dmp

      Filesize

      408KB

    • memory/1736-69-0x0000000075951000-0x0000000075953000-memory.dmp

      Filesize

      8KB