Analysis

  • max time kernel
    97s
  • max time network
    51s
  • platform
    windows7_x64
  • resource
    win7-20220414-en
  • submitted
    21-05-2022 02:06

General

  • Target

    Quotation Valves & flanges and fittings.exe

  • Size

    419KB

  • MD5

    bc31e6b8c5414b43748f2a75ffe32724

  • SHA1

    ef1731bc72b671d1cc49447fcd7e9ec2d31d23e9

  • SHA256

    2919867ab52378d55e7d91b3b18c30b79c8527621aa9e2c2fe71d0b89dbc404a

  • SHA512

    9a47106436969d840858b56a7fc94f4fef652947c628f329eaac8035157e051524991fc3447fa7ace0ea7e39c40d61faa25dea80ceb4edf5d01662cb4c67be5e

Malware Config

Extracted

Family

agenttesla

Credentials

  • Protocol:
    smtp
  • Host:
    smtp.yandex.com
  • Port:
    587
  • Username:
    [email protected]
  • Password:
    OGOM12345

Signatures

  • AgentTesla

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

  • CoreEntity .NET Packer 1 IoCs

    A .NET packer called CoreEntity where it has embedded the payload as a BitMap object which is later decrypted.

  • AgentTesla Payload 6 IoCs
  • ReZer0 packer 1 IoCs

    Detects ReZer0, a packer with multiple versions used in various campaigns.

  • 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 3 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 17 IoCs
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Quotation Valves & flanges and fittings.exe
    "C:\Users\Admin\AppData\Local\Temp\Quotation Valves & flanges and fittings.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:856
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\cnQOTJtqD" /XML "C:\Users\Admin\AppData\Local\Temp\tmp3A24.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:1120
    • C:\Users\Admin\AppData\Local\Temp\Quotation Valves & flanges and fittings.exe
      "{path}"
      2⤵
      • Accesses Microsoft Outlook profiles
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      • outlook_office_path
      • outlook_win_path
      PID:2044
      • C:\Windows\SysWOW64\netsh.exe
        "netsh" wlan show profile
        3⤵
          PID:1332

    Network

    MITRE ATT&CK Enterprise v6

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\Users\Admin\AppData\Local\Temp\tmp3A24.tmp

      Filesize

      1KB

      MD5

      ff5ab051fe0dc837d0981616377fc535

      SHA1

      e6bbdab4e6f7c1fcdf4b4ba17655ee6322540e2f

      SHA256

      d5048fce5da47ecc1886529fed29c7338373c4c998c7c723853fd155030e0600

      SHA512

      d706aa0e0cf3f20f33797c61c544a8daf46dcb1e660536c477c5db7daf035b045ccbfb9d737aa0959e89c677dbb98e6bfcce6c9669e00cfe189c548a700bd63d

    • memory/856-55-0x00000000763C1000-0x00000000763C3000-memory.dmp

      Filesize

      8KB

    • memory/856-56-0x00000000002F0000-0x00000000002F8000-memory.dmp

      Filesize

      32KB

    • memory/856-57-0x0000000000D10000-0x0000000000D6A000-memory.dmp

      Filesize

      360KB

    • memory/856-54-0x0000000001370000-0x00000000013E0000-memory.dmp

      Filesize

      448KB

    • memory/1120-58-0x0000000000000000-mapping.dmp

    • memory/1332-72-0x0000000000000000-mapping.dmp

    • memory/2044-60-0x0000000000400000-0x0000000000452000-memory.dmp

      Filesize

      328KB

    • memory/2044-63-0x0000000000400000-0x0000000000452000-memory.dmp

      Filesize

      328KB

    • memory/2044-64-0x0000000000400000-0x0000000000452000-memory.dmp

      Filesize

      328KB

    • memory/2044-65-0x0000000000400000-0x0000000000452000-memory.dmp

      Filesize

      328KB

    • memory/2044-66-0x000000000044D1BE-mapping.dmp

    • memory/2044-68-0x0000000000400000-0x0000000000452000-memory.dmp

      Filesize

      328KB

    • memory/2044-70-0x0000000000400000-0x0000000000452000-memory.dmp

      Filesize

      328KB

    • memory/2044-61-0x0000000000400000-0x0000000000452000-memory.dmp

      Filesize

      328KB