Analysis

  • max time kernel
    121s
  • max time network
    123s
  • platform
    windows7_x64
  • resource
    win7-20240903-en
  • resource tags

    arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
  • submitted
    02-10-2024 12:59

General

  • Target

    SCANNED COPY.rtf

  • Size

    699KB

  • MD5

    4b6a210109e97c5168659caaac0895f1

  • SHA1

    5edaab62f69f03a0ce76130be6281ed12b8974f2

  • SHA256

    1abbd41ea4c50b4db3acfe9a14f07b93ee52e0ea8515f34cc007f4d314d60746

  • SHA512

    59505a64198a017143c01f58564b14b282e5f502ad23b1f71f4d0c0458d17ece1b96bf2fd0d8f38a8ded2eef0f433c3b1c134cb947a05fc565bf0e9ddf7972e7

  • SSDEEP

    6144:/wAYwAYwAYwAYwASlhaA48Ix9kN25/bQ9/vlT79Gz:cE

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 1 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\SCANNED COPY.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:2132
    • C:\Windows\splwow64.exe
      C:\Windows\splwow64.exe 12288
      2⤵
        PID:2660
    • 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:2360
      • C:\Users\Admin\AppData\Roaming\obiyen4385651.exe
        "C:\Users\Admin\AppData\Roaming\obiyen4385651.exe"
        2⤵
        • Executes dropped EXE
        • Suspicious use of SetThreadContext
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:2872
        • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
          "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\obiyen4385651.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:1472
        • C:\Users\Admin\AppData\Roaming\obiyen4385651.exe
          "C:\Users\Admin\AppData\Roaming\obiyen4385651.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:1676

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • \Users\Admin\AppData\Roaming\obiyen4385651.exe

      Filesize

      861KB

      MD5

      dd429f3dc6b27f618d4aa22ad5391e39

      SHA1

      a951266db9c02ea4c4330e09e3167312ac158f97

      SHA256

      3684bf9a9c63ff32ed0e00dcdbe15ba654a395f2063fd476b50a4d7d1653c9aa

      SHA512

      6ab12ec0dc5ec17330eca4dfd6a4a87ebf32657506f7d5258ea206d9228730e6ab53d070f4962d34c65e5b0ed56ef36892c9a5370712a68284767ee8ee637d65

    • memory/1676-30-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

      Filesize

      4KB

    • memory/1676-31-0x0000000000400000-0x0000000000448000-memory.dmp

      Filesize

      288KB

    • memory/1676-24-0x0000000000400000-0x0000000000448000-memory.dmp

      Filesize

      288KB

    • memory/1676-26-0x0000000000400000-0x0000000000448000-memory.dmp

      Filesize

      288KB

    • memory/1676-28-0x0000000000400000-0x0000000000448000-memory.dmp

      Filesize

      288KB

    • memory/1676-22-0x0000000000400000-0x0000000000448000-memory.dmp

      Filesize

      288KB

    • memory/1676-35-0x0000000000400000-0x0000000000448000-memory.dmp

      Filesize

      288KB

    • memory/1676-33-0x0000000000400000-0x0000000000448000-memory.dmp

      Filesize

      288KB

    • memory/2132-2-0x00000000713FD000-0x0000000071408000-memory.dmp

      Filesize

      44KB

    • memory/2132-20-0x00000000713FD000-0x0000000071408000-memory.dmp

      Filesize

      44KB

    • memory/2132-0-0x000000002FB91000-0x000000002FB92000-memory.dmp

      Filesize

      4KB

    • memory/2132-1-0x000000005FFF0000-0x0000000060000000-memory.dmp

      Filesize

      64KB

    • memory/2872-21-0x0000000000450000-0x00000000004DC000-memory.dmp

      Filesize

      560KB

    • memory/2872-15-0x00000000003B0000-0x00000000003CE000-memory.dmp

      Filesize

      120KB

    • memory/2872-14-0x0000000000C60000-0x0000000000D3E000-memory.dmp

      Filesize

      888KB