Analysis

  • max time kernel
    55s
  • max time network
    137s
  • platform
    windows7_x64
  • resource
    win7-20241010-en
  • resource tags

    arch:x64arch:x86image:win7-20241010-enlocale:en-usos:windows7-x64system
  • submitted
    01/11/2024, 19:19

General

  • Target

    SWIFT COPY 2.rtf

  • Size

    731KB

  • MD5

    e616a0fab41b046b3fd51b5697ab23dc

  • SHA1

    b371c54ebf39448731647271131e8c65f8c44bfc

  • SHA256

    61d3e5183fd1a0ef9c6d5c3f923fdbb1558c1b3ebcdc7f3e960a7dae1709e592

  • SHA512

    746508833d80a8fdd354f525d884ac3dc8983f1d9c71599ba5aa363eb4697476b02d2f13e4c775f14efb49215a3920307379bfa4fb617937f1ba48f09cc7a1fe

  • SSDEEP

    6144:5wAYwAYwAYwAYwAYwAYwAYwAYwAYwAYwAYwAYwAYwAYwA64Rt24k3VI0PQyntV1E:SC

Malware Config

Extracted

Family

vipkeylogger

Credentials

Signatures

  • VIPKeylogger

    VIPKeylogger is a keylogger and infostealer written in C# and it resembles SnakeKeylogger that was found in 2020.

  • Vipkeylogger family
  • Blocklisted process makes network request 1 IoCs
  • Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs

    Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

  • Downloads MZ/PE file
  • Executes dropped EXE 2 IoCs
  • Loads dropped DLL 2 IoCs
  • 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 3 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 1 IoCs

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

  • Drops file in System32 directory 1 IoCs
  • Suspicious use of SetThreadContext 1 IoCs
  • Drops file in Windows directory 1 IoCs
  • Browser Information Discovery 1 TTPs

    Enumerate browser information.

  • Enumerates physical storage devices 1 TTPs

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

  • System Location Discovery: System Language Discovery 1 TTPs 5 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • 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.

  • Suspicious behavior: AddClipboardFormatListener 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 3 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of SetWindowsHookEx 2 IoCs
  • Suspicious use of WriteProcessMemory 21 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\SWIFT COPY 2.rtf"
    1⤵
    • Drops file in Windows directory
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: AddClipboardFormatListener
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:3016
    • C:\Windows\splwow64.exe
      C:\Windows\splwow64.exe 12288
      2⤵
        PID:2096
    • 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
      • System Location Discovery: System Language Discovery
      • Launches Equation Editor
      • Suspicious use of WriteProcessMemory
      PID:2860
      • C:\Users\Admin\AppData\Roaming\obirfsgjkf.exe
        "C:\Users\Admin\AppData\Roaming\obirfsgjkf.exe"
        2⤵
        • Executes dropped EXE
        • Suspicious use of SetThreadContext
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:2132
        • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
          "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\obirfsgjkf.exe"
          3⤵
          • Command and Scripting Interpreter: PowerShell
          • Drops file in System32 directory
          • System Location Discovery: System Language Discovery
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          PID:2260
        • C:\Users\Admin\AppData\Roaming\obirfsgjkf.exe
          "C:\Users\Admin\AppData\Roaming\obirfsgjkf.exe"
          3⤵
          • Executes dropped EXE
          • Accesses Microsoft Outlook profiles
          • System Location Discovery: System Language Discovery
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          • outlook_office_path
          • outlook_win_path
          PID:2648

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    Downloads

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

      Filesize

      1011KB

      MD5

      f371024886e3e82d04bc6a6d7002e0f8

      SHA1

      0a631505218789c4aa0666916542551c5ed1fbea

      SHA256

      2fb14cfc217c3b520bf9e5654cb9ac8c237e8ca11e50d1b3c2bf9d20e1dee411

      SHA512

      76bd807bec9f477297171ddc87cbc1895962bba56132db726e282396688ce74b5d02fd04aae122b841d13332bcb3576a2d349eca73f95459f2cfddf8bd915cdb

    • memory/2132-17-0x0000000001210000-0x0000000001312000-memory.dmp

      Filesize

      1.0MB

    • memory/2132-24-0x0000000005D50000-0x0000000005DDA000-memory.dmp

      Filesize

      552KB

    • memory/2132-23-0x00000000006C0000-0x00000000006DC000-memory.dmp

      Filesize

      112KB

    • memory/2648-36-0x0000000000400000-0x0000000000448000-memory.dmp

      Filesize

      288KB

    • memory/2648-38-0x0000000000400000-0x0000000000448000-memory.dmp

      Filesize

      288KB

    • memory/2648-34-0x0000000000400000-0x0000000000448000-memory.dmp

      Filesize

      288KB

    • memory/2648-33-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

      Filesize

      4KB

    • memory/2648-31-0x0000000000400000-0x0000000000448000-memory.dmp

      Filesize

      288KB

    • memory/2648-29-0x0000000000400000-0x0000000000448000-memory.dmp

      Filesize

      288KB

    • memory/2648-27-0x0000000000400000-0x0000000000448000-memory.dmp

      Filesize

      288KB

    • memory/2648-25-0x0000000000400000-0x0000000000448000-memory.dmp

      Filesize

      288KB

    • memory/3016-22-0x000000007115D000-0x0000000071168000-memory.dmp

      Filesize

      44KB

    • memory/3016-1-0x000000005FFF0000-0x0000000060000000-memory.dmp

      Filesize

      64KB

    • memory/3016-2-0x000000007115D000-0x0000000071168000-memory.dmp

      Filesize

      44KB

    • memory/3016-0-0x000000002FC81000-0x000000002FC82000-memory.dmp

      Filesize

      4KB