Analysis

  • max time kernel
    121s
  • max time network
    126s
  • platform
    windows7_x64
  • resource
    win7-20230831-en
  • resource tags

    arch:x64arch:x86image:win7-20230831-enlocale:en-usos:windows7-x64system
  • submitted
    05/10/2023, 09:25

General

  • Target

    HTML.exe

  • Size

    581KB

  • MD5

    0c86e968796f80b0e5c091b3270ce88b

  • SHA1

    4b8cac21c67d776a6f1e834191b6091236248e73

  • SHA256

    cef638c80808c085c6ad3382a2c0d1f664a0cba324a178fa2acdd572a193eac5

  • SHA512

    fe13ad7fd9ffec5fead6a5e4b75208f9ed2bf9edf70efbc324d34711f1b60e9feabd34a3f74f00a9b6b4f160e524eff9f4f3e795f9ab5b867d908216ee3e31d4

  • SSDEEP

    12288:8awpemS7q1GV1ysvF5kJEqD1DqbQpkMwuINF9ypvrab3ZTsGD/si:8awpemS7qM6sd6JdpPpHvlabJTe

Malware Config

Extracted

Family

agenttesla

Credentials

Signatures

  • AgentTesla

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

  • 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
  • Looks up external IP address via web service 2 IoCs

    Uses a legitimate IP lookup service to find the infected system's external IP.

  • Suspicious use of SetThreadContext 1 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • 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 WriteProcessMemory 13 IoCs
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\HTML.exe
    "C:\Users\Admin\AppData\Local\Temp\HTML.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2068
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\PaJmBrIB" /XML "C:\Users\Admin\AppData\Local\Temp\tmp3D8D.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:2988
    • C:\Users\Admin\AppData\Local\Temp\HTML.exe
      "{path}"
      2⤵
      • Accesses Microsoft Outlook profiles
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • outlook_office_path
      • outlook_win_path
      PID:2944

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        • C:\Users\Admin\AppData\Local\Temp\tmp3D8D.tmp

          Filesize

          1KB

          MD5

          a3472aad8a5fbf93ea1fb78eba120d28

          SHA1

          a2fe34dd8a1970680d2d94867fa240faeb49d4c1

          SHA256

          bcf12ffd0aad6ac97d2bbacdd1e356d799db31b16f04f555fb249fc9f11df285

          SHA512

          23098b0f1c365710a8a1027297e037dbdb912c7c60fccfe1ecc7468eda330244b9ca903ec0032a94629598b043eeff5dbdda9080f1c630b83acb62ca8ccae134

        • memory/2068-6-0x0000000074030000-0x000000007471E000-memory.dmp

          Filesize

          6.9MB

        • memory/2068-32-0x0000000074030000-0x000000007471E000-memory.dmp

          Filesize

          6.9MB

        • memory/2068-3-0x0000000004BB0000-0x0000000004BF0000-memory.dmp

          Filesize

          256KB

        • memory/2068-4-0x000000007EF40000-0x000000007EF50000-memory.dmp

          Filesize

          64KB

        • memory/2068-5-0x0000000000C50000-0x0000000000C5C000-memory.dmp

          Filesize

          48KB

        • memory/2068-0-0x0000000074030000-0x000000007471E000-memory.dmp

          Filesize

          6.9MB

        • memory/2068-7-0x0000000004BB0000-0x0000000004BF0000-memory.dmp

          Filesize

          256KB

        • memory/2068-8-0x0000000004BB0000-0x0000000004BF0000-memory.dmp

          Filesize

          256KB

        • memory/2068-9-0x000000007EF40000-0x000000007EF50000-memory.dmp

          Filesize

          64KB

        • memory/2068-10-0x0000000007FA0000-0x0000000008020000-memory.dmp

          Filesize

          512KB

        • memory/2068-11-0x0000000004E40000-0x0000000004E82000-memory.dmp

          Filesize

          264KB

        • memory/2068-1-0x0000000000CD0000-0x0000000000D68000-memory.dmp

          Filesize

          608KB

        • memory/2068-2-0x0000000004BB0000-0x0000000004BF0000-memory.dmp

          Filesize

          256KB

        • memory/2944-31-0x0000000004900000-0x0000000004940000-memory.dmp

          Filesize

          256KB

        • memory/2944-15-0x0000000000400000-0x0000000000442000-memory.dmp

          Filesize

          264KB

        • memory/2944-21-0x0000000000400000-0x0000000000442000-memory.dmp

          Filesize

          264KB

        • memory/2944-23-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

          Filesize

          4KB

        • memory/2944-25-0x0000000000400000-0x0000000000442000-memory.dmp

          Filesize

          264KB

        • memory/2944-27-0x0000000000400000-0x0000000000442000-memory.dmp

          Filesize

          264KB

        • memory/2944-29-0x0000000000400000-0x0000000000442000-memory.dmp

          Filesize

          264KB

        • memory/2944-30-0x0000000074030000-0x000000007471E000-memory.dmp

          Filesize

          6.9MB

        • memory/2944-17-0x0000000000400000-0x0000000000442000-memory.dmp

          Filesize

          264KB

        • memory/2944-19-0x0000000000400000-0x0000000000442000-memory.dmp

          Filesize

          264KB

        • memory/2944-33-0x0000000074030000-0x000000007471E000-memory.dmp

          Filesize

          6.9MB

        • memory/2944-34-0x0000000004900000-0x0000000004940000-memory.dmp

          Filesize

          256KB