Analysis

  • max time kernel
    121s
  • max time network
    123s
  • platform
    windows7_x64
  • resource
    win7-20241010-en
  • resource tags

    arch:x64arch:x86image:win7-20241010-enlocale:en-usos:windows7-x64system
  • submitted
    19-11-2024 18:55

General

  • Target

    w1svdfWNYHVYMjK.rtf

  • Size

    389KB

  • MD5

    e78429a983cb429973b1227b19a41d36

  • SHA1

    fef2461dd913865e8cf4f7a96ba771afa7a4c24f

  • SHA256

    05112b680930bb43c94cb3b566540e9740e058d8bc6c36fdd1f9e018abec3544

  • SHA512

    48fc172ecc95483e54981989abe259a4892e226caa40b9710a0fc1758f9531fe2788a9275f1537fd3458d6c3624e4c28b7c3e21571961d368609cc76e2908823

  • SSDEEP

    6144:wwAYwAYwAYwAYwAYwAYwAYwAYwAYwAYwAYwAQXE5ZeO:h

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 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\w1svdfWNYHVYMjK.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:1796
    • C:\Windows\splwow64.exe
      C:\Windows\splwow64.exe 12288
      2⤵
        PID:2748
    • 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:2328
      • C:\Users\Admin\AppData\Roaming\agodkelyvnc.exe
        "C:\Users\Admin\AppData\Roaming\agodkelyvnc.exe"
        2⤵
        • Executes dropped EXE
        • Suspicious use of SetThreadContext
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:2152
        • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
          "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\agodkelyvnc.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:1764
        • C:\Users\Admin\AppData\Roaming\agodkelyvnc.exe
          "C:\Users\Admin\AppData\Roaming\agodkelyvnc.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:3044

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    Downloads

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

      Filesize

      815KB

      MD5

      a2cf106de3926f3327383030cd8335f7

      SHA1

      3aecaece061656a79409c55d5292790e2fb818ad

      SHA256

      10f8204d1888d835105f1290b304e60911508d30fc6c4bc454f6e484ebfdb8d6

      SHA512

      e0636337ec531d60a412195192d6ae1882349863ecd5818735ca91168b4f5d869268b6f3c4fd2711b580ffd94d352372188b2e670072e106b58069358f655c3a

    • memory/1796-0-0x000000002F581000-0x000000002F582000-memory.dmp

      Filesize

      4KB

    • memory/1796-1-0x000000005FFF0000-0x0000000060000000-memory.dmp

      Filesize

      64KB

    • memory/1796-2-0x000000007180D000-0x0000000071818000-memory.dmp

      Filesize

      44KB

    • memory/1796-4-0x000000007180D000-0x0000000071818000-memory.dmp

      Filesize

      44KB

    • memory/2152-22-0x000000006B98E000-0x000000006B98F000-memory.dmp

      Filesize

      4KB

    • memory/2152-16-0x0000000001350000-0x0000000001420000-memory.dmp

      Filesize

      832KB

    • memory/2152-21-0x00000000003E0000-0x00000000003F2000-memory.dmp

      Filesize

      72KB

    • memory/2152-14-0x000000006B98E000-0x000000006B98F000-memory.dmp

      Filesize

      4KB

    • memory/2152-23-0x0000000005740000-0x00000000057CE000-memory.dmp

      Filesize

      568KB

    • memory/3044-24-0x0000000000400000-0x0000000000448000-memory.dmp

      Filesize

      288KB

    • memory/3044-36-0x0000000000400000-0x0000000000448000-memory.dmp

      Filesize

      288KB

    • memory/3044-35-0x0000000000400000-0x0000000000448000-memory.dmp

      Filesize

      288KB

    • memory/3044-33-0x0000000000400000-0x0000000000448000-memory.dmp

      Filesize

      288KB

    • memory/3044-32-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

      Filesize

      4KB

    • memory/3044-30-0x0000000000400000-0x0000000000448000-memory.dmp

      Filesize

      288KB

    • memory/3044-28-0x0000000000400000-0x0000000000448000-memory.dmp

      Filesize

      288KB

    • memory/3044-26-0x0000000000400000-0x0000000000448000-memory.dmp

      Filesize

      288KB