Analysis

  • max time kernel
    121s
  • max time network
    140s
  • platform
    windows7_x64
  • resource
    win7-20241010-en
  • resource tags

    arch:x64arch:x86image:win7-20241010-enlocale:en-usos:windows7-x64system
  • submitted
    14-11-2024 19:20

General

  • Target

    xXdquUOrM1vD3An.rtf

  • Size

    799KB

  • MD5

    2087de574fefae441db7ced132da6407

  • SHA1

    6d8b4083d71075be31068808232805ea486f77d8

  • SHA256

    dc8ae41681fdf19abcf62b27b3d8359c32ba6f20bee1e24b7ce9b37d4faebe8b

  • SHA512

    02ead1047af13379ee161c25e1db2c83033daf752629159b9c5836ed0c1d5f6436da73299d920cc10cefe6d4edd3272266d9b4f2088225bc434a53c20ba43ce9

  • SSDEEP

    6144:cwAYwAYwAYwAYwAYwAYwAYwAYwAYwAYwAYwAYwAYwAYwAaZqGYZHtRD5+XHFTqG9:96e

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\xXdquUOrM1vD3An.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:804
    • C:\Windows\splwow64.exe
      C:\Windows\splwow64.exe 12288
      2⤵
        PID:2664
    • 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:2008
      • C:\Users\Admin\AppData\Roaming\obigfdsdfgh.exe
        "C:\Users\Admin\AppData\Roaming\obigfdsdfgh.exe"
        2⤵
        • Executes dropped EXE
        • Suspicious use of SetThreadContext
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:2764
        • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
          "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\obigfdsdfgh.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:340
        • C:\Users\Admin\AppData\Roaming\obigfdsdfgh.exe
          "C:\Users\Admin\AppData\Roaming\obigfdsdfgh.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:2608

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    Downloads

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

      Filesize

      783KB

      MD5

      4f80565082ea4d95d933decf9cd50c61

      SHA1

      2830f9d5f41bbecd2ae105ed0b9a8d49327c8594

      SHA256

      d854f347061d9d7b8a9788ab8633c3f07619e29bd440924507a0147484c217c3

      SHA512

      9dcdae5c7a5b4181ade738884e208508bf317742ca2be0726716aa71236670a50dae2bec947b3fcc12cfc85c756810f18a9f403de4eb428b4a73a4759037f227

    • memory/804-22-0x000000007104D000-0x0000000071058000-memory.dmp

      Filesize

      44KB

    • memory/804-1-0x000000005FFF0000-0x0000000060000000-memory.dmp

      Filesize

      64KB

    • memory/804-2-0x000000007104D000-0x0000000071058000-memory.dmp

      Filesize

      44KB

    • memory/804-0-0x000000002FE41000-0x000000002FE42000-memory.dmp

      Filesize

      4KB

    • memory/2608-34-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

      Filesize

      4KB

    • memory/2608-26-0x0000000000400000-0x0000000000448000-memory.dmp

      Filesize

      288KB

    • memory/2608-38-0x0000000000400000-0x0000000000448000-memory.dmp

      Filesize

      288KB

    • memory/2608-37-0x0000000000400000-0x0000000000448000-memory.dmp

      Filesize

      288KB

    • memory/2608-35-0x0000000000400000-0x0000000000448000-memory.dmp

      Filesize

      288KB

    • memory/2608-32-0x0000000000400000-0x0000000000448000-memory.dmp

      Filesize

      288KB

    • memory/2608-30-0x0000000000400000-0x0000000000448000-memory.dmp

      Filesize

      288KB

    • memory/2608-28-0x0000000000400000-0x0000000000448000-memory.dmp

      Filesize

      288KB

    • memory/2764-24-0x00000000004D0000-0x00000000004E2000-memory.dmp

      Filesize

      72KB

    • memory/2764-25-0x0000000005CD0000-0x0000000005D5E000-memory.dmp

      Filesize

      568KB

    • memory/2764-17-0x00000000002A0000-0x000000000036A000-memory.dmp

      Filesize

      808KB