Analysis

  • max time kernel
    133s
  • max time network
    156s
  • platform
    windows7_x64
  • resource
    win7-20240903-en
  • resource tags

    arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
  • submitted
    04-10-2024 07:57

General

  • Target

    bnmagodmnb.rtf

  • Size

    674KB

  • MD5

    6f937970f5ba3d9da4b66f1bc7c5e820

  • SHA1

    403a9e727a52c64060b9e02a0aa79c8fd46506d8

  • SHA256

    52ba6d07874484044d15877d81ae2606501881571627174c044f87908d7bdb01

  • SHA512

    458b5283b73d64e739548bbe9eb358a8cdd95a1c5491660855ca7a937d24959cd81827503852b2225a6a12f3e37c7ec57f65ed89f431f161737a148ccc3b86dc

  • SSDEEP

    3072:OwAlawAlawAlwGruaz9ezP6KVcKLB4xJ/9NczzH4InNFM+bsbraTH8:OwAYwAYwATVezP6Kl+xJ/T4nwHbraTH8

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.

  • 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\bnmagodmnb.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:1756
    • C:\Windows\splwow64.exe
      C:\Windows\splwow64.exe 12288
      2⤵
        PID:2776
    • 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:1028
      • C:\Users\Admin\AppData\Roaming\aagobijsfyk.exe
        "C:\Users\Admin\AppData\Roaming\aagobijsfyk.exe"
        2⤵
        • Executes dropped EXE
        • Suspicious use of SetThreadContext
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:2632
        • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
          "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\aagobijsfyk.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:2800
        • C:\Users\Admin\AppData\Roaming\aagobijsfyk.exe
          "C:\Users\Admin\AppData\Roaming\aagobijsfyk.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:3052

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    Downloads

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

      Filesize

      768KB

      MD5

      38f27f2d0381640e7dd4f7ed2a3dee68

      SHA1

      592dc0a7b4328de8b8998f6bf620838d64dee5ab

      SHA256

      44970f5c9f2a85e4e15c59a4a0694cf991b723ffc438c8cbcdbfe9ebccfcf9ef

      SHA512

      c8301f8348922669e956ad548c58ae97c781d7fdee1c3885b34f41df0b5665c76e589c33871ee13402e05bacd938ea67578a5b4b9598d7a2d9608af1f93faa6c

    • memory/1756-0-0x000000002FE91000-0x000000002FE92000-memory.dmp

      Filesize

      4KB

    • memory/1756-1-0x000000005FFF0000-0x0000000060000000-memory.dmp

      Filesize

      64KB

    • memory/1756-2-0x000000007130D000-0x0000000071318000-memory.dmp

      Filesize

      44KB

    • memory/1756-23-0x000000007130D000-0x0000000071318000-memory.dmp

      Filesize

      44KB

    • memory/2632-17-0x0000000000AD0000-0x0000000000B96000-memory.dmp

      Filesize

      792KB

    • memory/2632-22-0x00000000004F0000-0x000000000050A000-memory.dmp

      Filesize

      104KB

    • memory/2632-24-0x0000000005DA0000-0x0000000005E2C000-memory.dmp

      Filesize

      560KB

    • memory/3052-31-0x0000000000400000-0x0000000000448000-memory.dmp

      Filesize

      288KB

    • memory/3052-37-0x0000000000400000-0x0000000000448000-memory.dmp

      Filesize

      288KB

    • memory/3052-36-0x0000000000400000-0x0000000000448000-memory.dmp

      Filesize

      288KB

    • memory/3052-34-0x0000000000400000-0x0000000000448000-memory.dmp

      Filesize

      288KB

    • memory/3052-33-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

      Filesize

      4KB

    • memory/3052-29-0x0000000000400000-0x0000000000448000-memory.dmp

      Filesize

      288KB

    • memory/3052-27-0x0000000000400000-0x0000000000448000-memory.dmp

      Filesize

      288KB

    • memory/3052-25-0x0000000000400000-0x0000000000448000-memory.dmp

      Filesize

      288KB