Analysis

  • max time kernel
    103s
  • max time network
    33s
  • platform
    windows7_x64
  • resource
    win7-20230220-en
  • resource tags

    arch:x64arch:x86image:win7-20230220-enlocale:en-usos:windows7-x64system
  • submitted
    26-02-2023 01:30

General

  • Target

    8404d3dc32b0555bc3b076d7fc080d2a341508b4a2c84805a1d5ffc0057e2b39.rtf

  • Size

    26KB

  • MD5

    9438b01f1e855f29eaf97344c263aa5e

  • SHA1

    271427843c271f7d0a0c4e69517bd39df9693b75

  • SHA256

    8404d3dc32b0555bc3b076d7fc080d2a341508b4a2c84805a1d5ffc0057e2b39

  • SHA512

    3222ecb01dfa57ee3901774a5b37fb4634418f2a72bd8447bee882e1594a45331de3669f7d06c9241b6e8293c7717c597fa6e4fe62a5e67e5fd76db13a35d609

  • SSDEEP

    384:FBL0AbZS3qC+L4desyxQbg01MYlCK7EWAHnUtqm3Gwa:FBwAbZS3qC12Qbg0jlCI5tR7a

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 1 IoCs
  • Downloads MZ/PE file
  • Executes dropped EXE 2 IoCs
  • Loads dropped DLL 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
  • 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 use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of SetWindowsHookEx 3 IoCs
  • Suspicious use of WriteProcessMemory 17 IoCs
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 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\8404d3dc32b0555bc3b076d7fc080d2a341508b4a2c84805a1d5ffc0057e2b39.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:852
    • C:\Windows\splwow64.exe
      C:\Windows\splwow64.exe 12288
      2⤵
        PID:988
    • 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:1236
      • C:\Users\Admin\AppData\Roaming\arnolded4874.exe
        "C:\Users\Admin\AppData\Roaming\arnolded4874.exe"
        2⤵
        • Executes dropped EXE
        • Suspicious use of SetThreadContext
        • Suspicious use of WriteProcessMemory
        PID:1396
        • C:\Users\Admin\AppData\Roaming\arnolded4874.exe
          "C:\Users\Admin\AppData\Roaming\arnolded4874.exe"
          3⤵
          • Executes dropped EXE
          • Accesses Microsoft Outlook profiles
          • Suspicious use of AdjustPrivilegeToken
          • Suspicious use of SetWindowsHookEx
          • outlook_office_path
          • outlook_win_path
          PID:2008

    Network

    MITRE ATT&CK Enterprise v6

    Replay Monitor

    Loading Replay Monitor...

    Downloads

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

      Filesize

      20KB

      MD5

      dc10c9f3fe3f313c7668d7e84d0b3dd6

      SHA1

      9b7a540543371217fd200dac53dea6d72c442624

      SHA256

      80942987e5db4fd71a168990eda2aa36491fd54417b8fd43fa1faf625b0e016b

      SHA512

      07f3d7466e856cbb73fc4ad3508fe6f6427b33ff46ca1a99812fa0c090e7f1018705b973e51762ca3578b6c80f322cb41463b8d693336f908e515872c1043a08

    • C:\Users\Admin\AppData\Roaming\arnolded4874.exe

      Filesize

      1008KB

      MD5

      0424f873764efe30214ed7a022abedeb

      SHA1

      23ca7f69595569cf1b862d0b8356af6d76d2b076

      SHA256

      e8e74c50435b7001dd34443af3a942c9b3ca32e7e460bcb0fb08ad965d725024

      SHA512

      c6def2f9b826bfe1e357b0666246ea3d403055bf8eac06bb419ec4df3434e5e8027993dd4545e19b86e3e419bc7e3b9ddcc0bfcf346061638fd50b88bb45afc5

    • C:\Users\Admin\AppData\Roaming\arnolded4874.exe

      Filesize

      1008KB

      MD5

      0424f873764efe30214ed7a022abedeb

      SHA1

      23ca7f69595569cf1b862d0b8356af6d76d2b076

      SHA256

      e8e74c50435b7001dd34443af3a942c9b3ca32e7e460bcb0fb08ad965d725024

      SHA512

      c6def2f9b826bfe1e357b0666246ea3d403055bf8eac06bb419ec4df3434e5e8027993dd4545e19b86e3e419bc7e3b9ddcc0bfcf346061638fd50b88bb45afc5

    • C:\Users\Admin\AppData\Roaming\arnolded4874.exe

      Filesize

      1008KB

      MD5

      0424f873764efe30214ed7a022abedeb

      SHA1

      23ca7f69595569cf1b862d0b8356af6d76d2b076

      SHA256

      e8e74c50435b7001dd34443af3a942c9b3ca32e7e460bcb0fb08ad965d725024

      SHA512

      c6def2f9b826bfe1e357b0666246ea3d403055bf8eac06bb419ec4df3434e5e8027993dd4545e19b86e3e419bc7e3b9ddcc0bfcf346061638fd50b88bb45afc5

    • C:\Users\Admin\AppData\Roaming\arnolded4874.exe

      Filesize

      1008KB

      MD5

      0424f873764efe30214ed7a022abedeb

      SHA1

      23ca7f69595569cf1b862d0b8356af6d76d2b076

      SHA256

      e8e74c50435b7001dd34443af3a942c9b3ca32e7e460bcb0fb08ad965d725024

      SHA512

      c6def2f9b826bfe1e357b0666246ea3d403055bf8eac06bb419ec4df3434e5e8027993dd4545e19b86e3e419bc7e3b9ddcc0bfcf346061638fd50b88bb45afc5

    • \Users\Admin\AppData\Roaming\arnolded4874.exe

      Filesize

      1008KB

      MD5

      0424f873764efe30214ed7a022abedeb

      SHA1

      23ca7f69595569cf1b862d0b8356af6d76d2b076

      SHA256

      e8e74c50435b7001dd34443af3a942c9b3ca32e7e460bcb0fb08ad965d725024

      SHA512

      c6def2f9b826bfe1e357b0666246ea3d403055bf8eac06bb419ec4df3434e5e8027993dd4545e19b86e3e419bc7e3b9ddcc0bfcf346061638fd50b88bb45afc5

    • memory/852-115-0x000000005FFF0000-0x0000000060000000-memory.dmp

      Filesize

      64KB

    • memory/852-54-0x000000005FFF0000-0x0000000060000000-memory.dmp

      Filesize

      64KB

    • memory/1396-72-0x0000000004990000-0x00000000049D0000-memory.dmp

      Filesize

      256KB

    • memory/1396-76-0x00000000005B0000-0x00000000005BC000-memory.dmp

      Filesize

      48KB

    • memory/1396-77-0x0000000005AC0000-0x0000000005B6C000-memory.dmp

      Filesize

      688KB

    • memory/1396-78-0x0000000002020000-0x0000000002052000-memory.dmp

      Filesize

      200KB

    • memory/1396-67-0x0000000000020000-0x0000000000122000-memory.dmp

      Filesize

      1.0MB

    • memory/1396-73-0x0000000000590000-0x00000000005A6000-memory.dmp

      Filesize

      88KB

    • memory/1396-74-0x0000000004990000-0x00000000049D0000-memory.dmp

      Filesize

      256KB

    • memory/2008-84-0x0000000000400000-0x0000000000430000-memory.dmp

      Filesize

      192KB

    • memory/2008-83-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

      Filesize

      4KB

    • memory/2008-81-0x0000000000400000-0x0000000000430000-memory.dmp

      Filesize

      192KB

    • memory/2008-82-0x0000000000400000-0x0000000000430000-memory.dmp

      Filesize

      192KB

    • memory/2008-87-0x0000000000400000-0x0000000000430000-memory.dmp

      Filesize

      192KB

    • memory/2008-89-0x0000000000400000-0x0000000000430000-memory.dmp

      Filesize

      192KB

    • memory/2008-90-0x0000000004960000-0x00000000049A0000-memory.dmp

      Filesize

      256KB

    • memory/2008-97-0x0000000004960000-0x00000000049A0000-memory.dmp

      Filesize

      256KB

    • memory/2008-80-0x0000000000400000-0x0000000000430000-memory.dmp

      Filesize

      192KB

    • memory/2008-79-0x0000000000400000-0x0000000000430000-memory.dmp

      Filesize

      192KB