Analysis

  • max time kernel
    117s
  • max time network
    131s
  • platform
    windows7_x64
  • resource
    win7-20240903-en
  • resource tags

    arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
  • submitted
    14-11-2024 07:02

General

  • Target

    BankSwiftCopy2.rtf

  • Size

    910KB

  • MD5

    71b37aac269badfe278550c567b76db4

  • SHA1

    a7fb35d35eb23fe3b4358e3c843f5982a161534e

  • SHA256

    b7d62d77cace855288bf6b463f8ad783316594f90dad78d97a7ea85be58b8bc3

  • SHA512

    db5999667758c607c1322dcd2652b350098a03f6bcd81c884efa5005920771a909f644a62979e7b4fd85d569a7374f9b980345bda822e1aa493e4c428d1c2b67

  • SSDEEP

    6144:VwAYwAYwAYwAYwAYwAYwAYwAYwAYwAYwAYwAYwAYwAYwAYwAYwAGX3vfwukn15uV:I9

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\BankSwiftCopy2.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:2124
    • C:\Windows\splwow64.exe
      C:\Windows\splwow64.exe 12288
      2⤵
        PID:2736
    • 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:1224
      • C:\Users\Admin\AppData\Roaming\obigfdsdf.exe
        "C:\Users\Admin\AppData\Roaming\obigfdsdf.exe"
        2⤵
        • Executes dropped EXE
        • Suspicious use of SetThreadContext
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:2928
        • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
          "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\obigfdsdf.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:464
        • C:\Users\Admin\AppData\Roaming\obigfdsdf.exe
          "C:\Users\Admin\AppData\Roaming\obigfdsdf.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:1012

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    Downloads

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

      Filesize

      783KB

      MD5

      4f80565082ea4d95d933decf9cd50c61

      SHA1

      2830f9d5f41bbecd2ae105ed0b9a8d49327c8594

      SHA256

      d854f347061d9d7b8a9788ab8633c3f07619e29bd440924507a0147484c217c3

      SHA512

      9dcdae5c7a5b4181ade738884e208508bf317742ca2be0726716aa71236670a50dae2bec947b3fcc12cfc85c756810f18a9f403de4eb428b4a73a4759037f227

    • memory/1012-37-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

      Filesize

      4KB

    • memory/1012-29-0x0000000000400000-0x0000000000448000-memory.dmp

      Filesize

      288KB

    • memory/1012-33-0x0000000000400000-0x0000000000448000-memory.dmp

      Filesize

      288KB

    • memory/1012-35-0x0000000000400000-0x0000000000448000-memory.dmp

      Filesize

      288KB

    • memory/1012-38-0x0000000000400000-0x0000000000448000-memory.dmp

      Filesize

      288KB

    • memory/1012-31-0x0000000000400000-0x0000000000448000-memory.dmp

      Filesize

      288KB

    • memory/1012-41-0x0000000000400000-0x0000000000448000-memory.dmp

      Filesize

      288KB

    • memory/1012-40-0x0000000000400000-0x0000000000448000-memory.dmp

      Filesize

      288KB

    • memory/2124-2-0x0000000070E8D000-0x0000000070E98000-memory.dmp

      Filesize

      44KB

    • memory/2124-1-0x000000005FFF0000-0x0000000060000000-memory.dmp

      Filesize

      64KB

    • memory/2124-0-0x000000002F3C1000-0x000000002F3C2000-memory.dmp

      Filesize

      4KB

    • memory/2124-24-0x0000000070E8D000-0x0000000070E98000-memory.dmp

      Filesize

      44KB

    • memory/2928-17-0x000000006B00E000-0x000000006B00F000-memory.dmp

      Filesize

      4KB

    • memory/2928-28-0x0000000005E60000-0x0000000005EEE000-memory.dmp

      Filesize

      568KB

    • memory/2928-27-0x000000006B00E000-0x000000006B00F000-memory.dmp

      Filesize

      4KB

    • memory/2928-25-0x0000000000290000-0x00000000002A2000-memory.dmp

      Filesize

      72KB

    • memory/2928-19-0x0000000000CF0000-0x0000000000DBA000-memory.dmp

      Filesize

      808KB