Analysis

  • max time kernel
    102s
  • max time network
    120s
  • platform
    windows7_x64
  • resource
    win7-20221111-en
  • resource tags

    arch:x64arch:x86image:win7-20221111-enlocale:en-usos:windows7-x64system
  • submitted
    30/01/2023, 08:41

General

  • Target

    Bank Form.rtf

  • Size

    42KB

  • MD5

    8e890d6b47fa3c1939927d3dd101d1b5

  • SHA1

    e90f334aa67e040dd22af07f463a07386f73f74b

  • SHA256

    b8e97f0e8beb7402eac9b99e4e2c5f747c641d8a1106210c2a27b0931c174927

  • SHA512

    68c601b12f92b9ad194ac7580d3351a212c72490765849381ea6d9cd90790ac1c9ebbb2564a167148c31fd2fd494961594d78c8ea813d3910f958af70d8cbbe0

  • SSDEEP

    768:oFx0XaIsnPRIa4fwJM2f21kE9Kc3bmIem3IP2vy3S9YXb:of0Xvx3EM2fC9KqbVem3IP4yCsb

Malware Config

Signatures

  • Blocklisted process makes network request 1 IoCs
  • Downloads MZ/PE file
  • Executes dropped EXE 2 IoCs
  • Loads dropped DLL 2 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
  • 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
  • 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 2 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\Bank Form.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:1812
    • C:\Windows\splwow64.exe
      C:\Windows\splwow64.exe 12288
      2⤵
        PID:1132
    • 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:580
      • C:\Users\Admin\AppData\Roaming\damianoahfk632.exe
        "C:\Users\Admin\AppData\Roaming\damianoahfk632.exe"
        2⤵
        • Executes dropped EXE
        • Suspicious use of SetThreadContext
        • Suspicious use of WriteProcessMemory
        PID:1672
        • C:\Users\Admin\AppData\Roaming\damianoahfk632.exe
          "C:\Users\Admin\AppData\Roaming\damianoahfk632.exe"
          3⤵
          • Executes dropped EXE
          • Accesses Microsoft Outlook profiles
          • Suspicious use of AdjustPrivilegeToken
          • outlook_office_path
          • outlook_win_path
          PID:2024

    Network

    MITRE ATT&CK Enterprise v6

    Replay Monitor

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    Downloads

    • C:\Users\Admin\AppData\Roaming\damianoahfk632.exe

      Filesize

      716KB

      MD5

      28d7a7385cdafe33d34861bcdabcee81

      SHA1

      0f0a495b38fe627edc624d2baf06dd575bfb6af0

      SHA256

      ff2e4312ff6513d00f4e3959d47e63bff0be7bf3b3faf53d8491ff9129b1f334

      SHA512

      b8cb387514aa65d16e6f3d4818b994f13aadad9772471af161d3a7a653eaa9e778945694af63be58cc5260f207d5166ed912c667b0acd1cd72a7c4c33ae810d9

    • C:\Users\Admin\AppData\Roaming\damianoahfk632.exe

      Filesize

      716KB

      MD5

      28d7a7385cdafe33d34861bcdabcee81

      SHA1

      0f0a495b38fe627edc624d2baf06dd575bfb6af0

      SHA256

      ff2e4312ff6513d00f4e3959d47e63bff0be7bf3b3faf53d8491ff9129b1f334

      SHA512

      b8cb387514aa65d16e6f3d4818b994f13aadad9772471af161d3a7a653eaa9e778945694af63be58cc5260f207d5166ed912c667b0acd1cd72a7c4c33ae810d9

    • C:\Users\Admin\AppData\Roaming\damianoahfk632.exe

      Filesize

      716KB

      MD5

      28d7a7385cdafe33d34861bcdabcee81

      SHA1

      0f0a495b38fe627edc624d2baf06dd575bfb6af0

      SHA256

      ff2e4312ff6513d00f4e3959d47e63bff0be7bf3b3faf53d8491ff9129b1f334

      SHA512

      b8cb387514aa65d16e6f3d4818b994f13aadad9772471af161d3a7a653eaa9e778945694af63be58cc5260f207d5166ed912c667b0acd1cd72a7c4c33ae810d9

    • \Users\Admin\AppData\Roaming\damianoahfk632.exe

      Filesize

      716KB

      MD5

      28d7a7385cdafe33d34861bcdabcee81

      SHA1

      0f0a495b38fe627edc624d2baf06dd575bfb6af0

      SHA256

      ff2e4312ff6513d00f4e3959d47e63bff0be7bf3b3faf53d8491ff9129b1f334

      SHA512

      b8cb387514aa65d16e6f3d4818b994f13aadad9772471af161d3a7a653eaa9e778945694af63be58cc5260f207d5166ed912c667b0acd1cd72a7c4c33ae810d9

    • \Users\Admin\AppData\Roaming\damianoahfk632.exe

      Filesize

      716KB

      MD5

      28d7a7385cdafe33d34861bcdabcee81

      SHA1

      0f0a495b38fe627edc624d2baf06dd575bfb6af0

      SHA256

      ff2e4312ff6513d00f4e3959d47e63bff0be7bf3b3faf53d8491ff9129b1f334

      SHA512

      b8cb387514aa65d16e6f3d4818b994f13aadad9772471af161d3a7a653eaa9e778945694af63be58cc5260f207d5166ed912c667b0acd1cd72a7c4c33ae810d9

    • memory/1132-70-0x000007FEFB8A1000-0x000007FEFB8A3000-memory.dmp

      Filesize

      8KB

    • memory/1672-73-0x0000000000480000-0x00000000004B0000-memory.dmp

      Filesize

      192KB

    • memory/1672-72-0x0000000007FE0000-0x000000000804A000-memory.dmp

      Filesize

      424KB

    • memory/1672-65-0x00000000011B0000-0x000000000126A000-memory.dmp

      Filesize

      744KB

    • memory/1672-67-0x0000000000220000-0x0000000000234000-memory.dmp

      Filesize

      80KB

    • memory/1672-71-0x00000000002C0000-0x00000000002CA000-memory.dmp

      Filesize

      40KB

    • memory/1812-57-0x0000000075F21000-0x0000000075F23000-memory.dmp

      Filesize

      8KB

    • memory/1812-56-0x000000005FFF0000-0x0000000060000000-memory.dmp

      Filesize

      64KB

    • memory/1812-68-0x0000000070E1D000-0x0000000070E28000-memory.dmp

      Filesize

      44KB

    • memory/1812-58-0x0000000070E1D000-0x0000000070E28000-memory.dmp

      Filesize

      44KB

    • memory/1812-55-0x000000006FE31000-0x000000006FE33000-memory.dmp

      Filesize

      8KB

    • memory/1812-54-0x00000000723B1000-0x00000000723B4000-memory.dmp

      Filesize

      12KB

    • memory/1812-88-0x0000000070E1D000-0x0000000070E28000-memory.dmp

      Filesize

      44KB

    • memory/1812-87-0x000000005FFF0000-0x0000000060000000-memory.dmp

      Filesize

      64KB

    • memory/2024-74-0x0000000000400000-0x0000000000430000-memory.dmp

      Filesize

      192KB

    • memory/2024-79-0x0000000000400000-0x0000000000430000-memory.dmp

      Filesize

      192KB

    • memory/2024-78-0x0000000000400000-0x0000000000430000-memory.dmp

      Filesize

      192KB

    • memory/2024-83-0x0000000000400000-0x0000000000430000-memory.dmp

      Filesize

      192KB

    • memory/2024-85-0x0000000000400000-0x0000000000430000-memory.dmp

      Filesize

      192KB

    • memory/2024-77-0x0000000000400000-0x0000000000430000-memory.dmp

      Filesize

      192KB

    • memory/2024-75-0x0000000000400000-0x0000000000430000-memory.dmp

      Filesize

      192KB