Analysis

  • max time kernel
    120s
  • max time network
    124s
  • platform
    windows7_x64
  • resource
    win7-20240221-en
  • resource tags

    arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
  • submitted
    12-05-2024 09:15

General

  • Target

    3509383dbd13a16f6b7414d1488229b6284b47b1f88aa902b75b8b0b2ee21d86.rtf

  • Size

    284KB

  • MD5

    d0af00a58e42fae4b2d58c7021302cca

  • SHA1

    9d3a4e9158393a46bd7581829f1e79015938b8b5

  • SHA256

    3509383dbd13a16f6b7414d1488229b6284b47b1f88aa902b75b8b0b2ee21d86

  • SHA512

    282d027c76541e510ae1c0fb2f54128d8fc5ae40740f369f7d951baa5a76abf7102e541f4f8f3520dd27cd36c45e771be003b7a4444b7e41fbf18441a809a4b0

  • SSDEEP

    6144:lwAYwAYwAYwAYwAYwAYwAYwAYwAYwAhuL8:a

Malware Config

Extracted

Family

agenttesla

Credentials

Signatures

  • AgentTesla

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

  • Blocklisted process makes network request 2 IoCs
  • Downloads MZ/PE file
  • Executes dropped EXE 2 IoCs
  • Loads dropped DLL 1 IoCs
  • Reads WinSCP keys stored on the system 2 TTPs

    Tries to access WinSCP stored sessions.

  • 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
  • Drops file in Windows directory 1 IoCs
  • Office loads VBA resources, possible macro or embedded object present
  • Launches Equation Editor 1 TTPs 1 IoCs

    Equation Editor is an old Office component often targeted by exploits such as CVE-2017-11882.

  • Modifies Internet Explorer settings 1 TTPs 31 IoCs
  • Modifies registry class 64 IoCs
  • Suspicious behavior: AddClipboardFormatListener 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of SetWindowsHookEx 2 IoCs
  • Suspicious use of WriteProcessMemory 17 IoCs

Processes

  • C:\Program Files (x86)\Microsoft Office\Office14\WINWORD.EXE
    "C:\Program Files (x86)\Microsoft Office\Office14\WINWORD.EXE" /n "C:\Users\Admin\AppData\Local\Temp\3509383dbd13a16f6b7414d1488229b6284b47b1f88aa902b75b8b0b2ee21d86.rtf"
    1⤵
    • Drops file in Windows directory
    • Modifies Internet Explorer settings
    • Modifies registry class
    • Suspicious behavior: AddClipboardFormatListener
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:2892
    • C:\Windows\splwow64.exe
      C:\Windows\splwow64.exe 12288
      2⤵
        PID:1656
    • C:\Program Files (x86)\Common Files\Microsoft Shared\EQUATION\EQNEDT32.EXE
      "C:\Program Files (x86)\Common Files\Microsoft Shared\EQUATION\EQNEDT32.EXE" -Embedding
      1⤵
      • Blocklisted process makes network request
      • Loads dropped DLL
      • Launches Equation Editor
      • Suspicious use of WriteProcessMemory
      PID:3024
      • C:\Users\Admin\AppData\Roaming\PLUGM4854.scr
        "C:\Users\Admin\AppData\Roaming\PLUGM4854.scr"
        2⤵
        • Executes dropped EXE
        • Suspicious use of SetThreadContext
        • Suspicious use of WriteProcessMemory
        PID:2716
        • C:\Users\Admin\AppData\Roaming\PLUGM4854.scr
          "C:\Users\Admin\AppData\Roaming\PLUGM4854.scr"
          3⤵
          • Executes dropped EXE
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          PID:1388

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\Users\Admin\AppData\Roaming\Microsoft\Templates\Normal.dotm

      Filesize

      20KB

      MD5

      d7118aa39f5eab24d6eb5c0aecc60894

      SHA1

      da5fdf1683e9b6157dcaefbf20675c876696470c

      SHA256

      8c8d0996df6f63f2caaa1327a7919f65c12a2a3f9617bc476c56556ba1f2a63c

      SHA512

      54b1244e1e9ed3479eb2bbbb11bee3f94ac967f1cdf75c88c35f208d3a8b1e8faa17a40d6f8b49d0fbe822360e90c147ee66fdebe283d17a6f8bb88a2f360cfa

    • C:\Users\Admin\AppData\Roaming\PLUGM4854.scr

      Filesize

      1.1MB

      MD5

      98b68b6a40d3ad9c093efcb2a2a15eb0

      SHA1

      0964a22c4c090521e1cd5ee95f500a81456a7bbd

      SHA256

      ad69e7f10266ceca6bf4a854570ab0c4017bd35ed8d63499f7567b393d2dc410

      SHA512

      504229b4d19051bc02b4cfec9a83eb12888c19ef5804f0de61adf8c0b2ab3f0bbd091cc2584a849141c34da3db8327362b62ec0b76f40a4411d85ec5d82f3b23

    • memory/1388-42-0x0000000000400000-0x0000000000440000-memory.dmp

      Filesize

      256KB

    • memory/1388-38-0x0000000000400000-0x0000000000440000-memory.dmp

      Filesize

      256KB

    • memory/1388-40-0x0000000000400000-0x0000000000440000-memory.dmp

      Filesize

      256KB

    • memory/1388-49-0x0000000000400000-0x0000000000440000-memory.dmp

      Filesize

      256KB

    • memory/1388-44-0x0000000000400000-0x0000000000440000-memory.dmp

      Filesize

      256KB

    • memory/1388-46-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

      Filesize

      4KB

    • memory/1388-50-0x0000000000400000-0x0000000000440000-memory.dmp

      Filesize

      256KB

    • memory/1388-47-0x0000000000400000-0x0000000000440000-memory.dmp

      Filesize

      256KB

    • memory/2716-37-0x0000000000470000-0x0000000000478000-memory.dmp

      Filesize

      32KB

    • memory/2716-32-0x0000000000890000-0x00000000008FE000-memory.dmp

      Filesize

      440KB

    • memory/2716-31-0x00000000002C0000-0x00000000003DE000-memory.dmp

      Filesize

      1.1MB

    • memory/2716-29-0x000000006B0AE000-0x000000006B0AF000-memory.dmp

      Filesize

      4KB

    • memory/2892-0-0x000000002F571000-0x000000002F572000-memory.dmp

      Filesize

      4KB

    • memory/2892-2-0x0000000070F2D000-0x0000000070F38000-memory.dmp

      Filesize

      44KB

    • memory/2892-52-0x0000000070F2D000-0x0000000070F38000-memory.dmp

      Filesize

      44KB

    • memory/2892-1-0x000000005FFF0000-0x0000000060000000-memory.dmp

      Filesize

      64KB

    • memory/2892-73-0x000000005FFF0000-0x0000000060000000-memory.dmp

      Filesize

      64KB