Analysis

  • max time kernel
    119s
  • max time network
    126s
  • platform
    windows7_x64
  • resource
    win7-20240221-en
  • resource tags

    arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
  • submitted
    10-03-2024 06:01

General

  • Target

    a9c38bfb583207e1f239d6b0d5ebd88c0e513de0b3191a3384278919c4335d29.rtf

  • Size

    116KB

  • MD5

    db2424da91067723c22e76698958d7e7

  • SHA1

    2b3d5980e287b1e987e88affd62de07adba21327

  • SHA256

    a9c38bfb583207e1f239d6b0d5ebd88c0e513de0b3191a3384278919c4335d29

  • SHA512

    d297677f01f3edb3f1522e66b03a911270f6091ab7d9689a89c5946801175812f2ef58a8e70c2e787038c17aee7de2727eb8f36f758f11cc6067670256ceab5f

  • SSDEEP

    768:/wAbZSibMX9gRWjtwAbZSibMX9gRWjtwAbZSibMX9gRWjcmbffWoQoDRfIxeGeSH:/wAlRkwAlRkwAlRFmbfeoQoDJIee5t

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\a9c38bfb583207e1f239d6b0d5ebd88c0e513de0b3191a3384278919c4335d29.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:2748
    • C:\Windows\splwow64.exe
      C:\Windows\splwow64.exe 12288
      2⤵
        PID:2160
    • 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:2532
      • C:\Users\Admin\AppData\Roaming\wealth72006.scr
        "C:\Users\Admin\AppData\Roaming\wealth72006.scr"
        2⤵
        • Executes dropped EXE
        • Suspicious use of SetThreadContext
        • Suspicious use of WriteProcessMemory
        PID:2364
        • C:\Users\Admin\AppData\Roaming\wealth72006.scr
          "C:\Users\Admin\AppData\Roaming\wealth72006.scr"
          3⤵
          • Executes dropped EXE
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          PID:2628

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    Downloads

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

      Filesize

      20KB

      MD5

      a0736e63b85ac3ca4c17ecbd0c40c4d3

      SHA1

      dca9d303a1523e4394dc9125a4eec0541b4b0491

      SHA256

      fd4be1379250aec3e984df0e672b7b6a9c87af623e65eb23c9602224d775c3a9

      SHA512

      77f5de2e89503d0eb6b52c72b6157237f805b1c89fb89d825adacbc752ba7838c933504aef35d5597dba7543466b6e1a16e33b56396d53226c509c2125573f90

    • \Users\Admin\AppData\Roaming\wealth72006.scr

      Filesize

      665KB

      MD5

      f842c007dd19b2120a76d4a0d8d27a9b

      SHA1

      f08d3b22eed467168c5cf535cbf8cee00a15ce69

      SHA256

      aa99c07203568e2616875fcf1094ffc5225cc72cd31aa52658a3018991525c0f

      SHA512

      867118065b95809645ad884762b880ef2c09900afa9a8def731a7dd1b8aedc3fe7eb17be9ad019a924d45f5bdedf286327257fa8317e314bb309178c1dbfe524

    • memory/2364-39-0x00000000002F0000-0x00000000002F8000-memory.dmp

      Filesize

      32KB

    • memory/2364-50-0x000000006B1E0000-0x000000006B8CE000-memory.dmp

      Filesize

      6.9MB

    • memory/2364-30-0x0000000000F70000-0x000000000101C000-memory.dmp

      Filesize

      688KB

    • memory/2364-31-0x000000006B1E0000-0x000000006B8CE000-memory.dmp

      Filesize

      6.9MB

    • memory/2364-37-0x0000000000CB0000-0x0000000000D1E000-memory.dmp

      Filesize

      440KB

    • memory/2364-36-0x00000000049E0000-0x0000000004A20000-memory.dmp

      Filesize

      256KB

    • memory/2628-43-0x0000000000080000-0x00000000000C0000-memory.dmp

      Filesize

      256KB

    • memory/2628-51-0x0000000000080000-0x00000000000C0000-memory.dmp

      Filesize

      256KB

    • memory/2628-40-0x0000000000080000-0x00000000000C0000-memory.dmp

      Filesize

      256KB

    • memory/2628-42-0x0000000000080000-0x00000000000C0000-memory.dmp

      Filesize

      256KB

    • memory/2628-63-0x0000000000EB0000-0x0000000000EF0000-memory.dmp

      Filesize

      256KB

    • memory/2628-44-0x0000000000080000-0x00000000000C0000-memory.dmp

      Filesize

      256KB

    • memory/2628-45-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

      Filesize

      4KB

    • memory/2628-62-0x0000000000EB0000-0x0000000000EF0000-memory.dmp

      Filesize

      256KB

    • memory/2628-49-0x0000000000080000-0x00000000000C0000-memory.dmp

      Filesize

      256KB

    • memory/2628-61-0x000000006AA50000-0x000000006B13E000-memory.dmp

      Filesize

      6.9MB

    • memory/2628-55-0x0000000000080000-0x00000000000C0000-memory.dmp

      Filesize

      256KB

    • memory/2628-58-0x0000000000080000-0x00000000000C0000-memory.dmp

      Filesize

      256KB

    • memory/2628-59-0x000000006AA50000-0x000000006B13E000-memory.dmp

      Filesize

      6.9MB

    • memory/2748-38-0x000000007106D000-0x0000000071078000-memory.dmp

      Filesize

      44KB

    • memory/2748-2-0x000000007106D000-0x0000000071078000-memory.dmp

      Filesize

      44KB

    • memory/2748-0-0x000000002F8D1000-0x000000002F8D2000-memory.dmp

      Filesize

      4KB

    • memory/2748-1-0x000000005FFF0000-0x0000000060000000-memory.dmp

      Filesize

      64KB

    • memory/2748-84-0x000000005FFF0000-0x0000000060000000-memory.dmp

      Filesize

      64KB

    • memory/2748-85-0x000000007106D000-0x0000000071078000-memory.dmp

      Filesize

      44KB